Holy SonoSub!

[ben62670]

I have decided to build a sonosub. I am using a Dayton Titanic 15" woofer Fs at 19.96, and 800watts nom. The amp I will be using is a bridged GFA-555 putting out 850 watts clean at 4 ohms. I will be using 18" sonotube, and I am using sonosub.exe for the design. The program already has the driver loaded into it. The subs overall height will be over 83 inches with end caps included. I am starting this project tonight. I should be done Thursday. :D

[GV#27]

Cool, be sure you take lots of pics of the build and post them.I bet you are going to like the results.

[engtaz]

Lets know how it goes and if it scares the neighbors. LOL

engtaz

[dorokusai]

Awesome!

[ben62670]

I just finished making the circle pieces for the top, and the bases. I am making a top kinda like a chimney top so the whole thing will be symmetrical. I want to veneer the thing, but I would need 2 sheets to do it. It will have almost a 64 inch circumference.

[dorokusai]

You should paint it flesh colored, with a purple stained top....see if anyone gets it.

[dudeinaroom]

You should paint it flesh colored, with a purple stained top....see if anyone gets it.


roflpmp NICE,very nice

[ben62670]

Well just finished gluing the inner baffles together. Woofer will be here Thursday. I'm working on the tube tonight, and the caps, and the port.

[Bill Ayotte]

You should paint it flesh colored, with a purple stained top....see if anyone gets it.

They would all think it came from Jenna Jameson's house...:eek: :D

[ben62670]

Maybe I should put a 1.5x8" port in the side about 36" from the floor? Can anyone recommend good port lube? :o

[Bill Ayotte]

Maybe I should put a 1.5x8" port in the side about 36" from the floor? Can anyone recommend good port lube? :o

That would be awesome, but your junk might get ripped off in the process if that massive mofo is running......:eek:

[ben62670]

I was thinking leave it on and do a sine sweep:D

[dudeinaroom]

ky no need for a sweep, just set it at 10 hz and it will be hummering very well

[dorokusai]

I think a 10hz test tone would provide a happy ending to that movie.

[Ricardo]

We want pics!!!!! (of the building process....)

[engtaz]

pics pics pics

engtaz

[jakelm]

So I see you decided not to go with Pr's....

Way to go Ben

[ben62670]

I messed up and didn't have my memory card in my camera, and I can't find the usb cable, but here is a pic of the half finished construction.
http://www.polkaudio.com/forums/attachment.php?attachmentid=24128&stc=1&d=1176350246

Gross volume 10.17 cu ft
Estimated weight over 100 lbs
Total height85 inches
Port 6" 30 long
Driver 28 lbs
15 Hz tune

[ben62670]

Well I have the girls today. Ashley, and JJ. 3 1/2, and 1 1/2. I gotta see if i can get away with doing some sanding, and painting. My woofer is on the truck for shipping. I have to make the legs, and finish the bottom plate. I'm thinking about using undercoating for the finish on the tube after I paint it.

[engtaz]

Put in a movie on the Projector and you will have about an hour and a half.

engtaz

[ben62670]

Put in a movie on the Projector and you will have about an hour and a half.

engtaz

That is my plan :)

[jakelm]

Where did you find a tube like that Ben? What sizes and how much?

Jake

[ben62670]

Local hardware store. 18"x12' $35. If you want you can come over and have the other half. That is if I don't make a second!
It's still a little wet. Got it in just before the rain storm!

[jakelm]

Project is looking great. No hardware store around here carries that (I dont think)

I'm trying to find one that about 14" x 4'. For an SVS 12.1. I'm trying to figure how to mount my Rythmik Audio plate amp to it. I will prpbably have to buid a seperate housing for the amp.

But yours looks great. I cant wait to hear from you about sound quality.

Jake

P.S. Looks like my kind of shop too...;)

[ben62670]

Pics

[tryrrthg]

Project is looking great. No hardware store around here carries that (I dont think)
check with concrete supply places. That's where I got my tube when I built my sonosub. Mine was even priced by the foot.

[ben62670]

Also use sonosub.exe for calculations. I will be able to do some test tonight to see how flat it is with a sweep.

[engtaz]

ben,
where did you get the sub?

engtaz

[jakelm]

ben,
where did you get the sub?

engtaz

Thats a PE Dayton sub right?

[ben62670]

Yes it a PE 15" Titanic Mark III. Moves 3 litters of air bla bla bla...

[ben62670]

My ears hurt.

[jakelm]

Well???????????????????????/

How does it sound????????????????????/ Or feel I must say?????

[ben62670]

Well it's over 6 feet tall, and when I send 300+ watts to it it starts jumping around, and I do mean laterally bouncing off the floor teetering back and forth. I was trying to cover the port with my hands, and when I let them off my buddy who was about 40' away said it felt like his ears were going to pop. Kinda like when you are coming down in a jet. I only ran a sine wave to it(TrueRta) so I don't know how its going to hit. Also it was in a 40*100 foot warehouse with 14 foot ceilings. The owner told me to turn it off cause it was hurting his head. My buddy suggested bolting it to the floor. As for SQ I have no Idea. The sub might as well been outside.

[jakelm]

......

[jakelm]

Well it's over 6 feet tall, and when I send 300+ watts to it it starts jumping around, and I do mean laterally bouncing off the floor teetering back and forth. I was trying to cover the port with my hands, and when I let them off my buddy who was about 40' away said it felt like his ears were going to pop. Kinda like when you are coming down in a jet. I only ran a sine wave to it(TrueRta) so I don't know how its going to hit. Also it was in a 40*100 foot warehouse with 14 foot ceilings. The owner told me to turn it off cause it was hurting his head. My buddy suggested bolting it to the floor. As for SQ I have no Idea. The sub might as well been outside.




THATS WHAT I'M TALKING ABOUT......MY KIND OF SUB!!!!!


I read you tuned it to 19hz. I bet you could tune it much lower.

[ben62670]

THATS WHAT I'M TALKING ABOUT......MY KIND OF SUB!!!!!


I read you tuned it to 19hz. I bet you could tune it much lower.

I tuned it to 15. The subs Fs is 19
Its in the house now.

[jakelm]

Very cool Ben. Are you going to run some TrueRTA testings on it? I'd like to see those readings..

[ben62670]

Very cool Ben. Are you going to run some TrueRTA testings on it? I'd like to see those readings..

I have the kids, and don't have a safe place to put them. I don't know where my ear protection is either. Probably tomorrow night. Watching Ice age now. There is a lot of low level stuff I never heard or felt before. It digs real deep.

[jakelm]

Kids nore Ice Age should NEVER stand in the way of scientific research...:p

I would run TrueRTA while Ice Age is on.....





But watch the cartoon you big kid.....:eek: :p :D

[ben62670]

Well I got it in the house today, and some friends came over to see me. Of coarse they wanted to hear it. So my friends wife took the kids for a walk, and we proceeded to play one of those bass head Cd's. The guy tells me I assume no responsibility for any damage to your amp or sub woofer if you play this. So I play it. The thing was jumping around like a Mexican jumping bean. So one guy about 210 lbs goes over to try to hold it down so I can crank it. Doesn't work. So the bigger guy (250 lbs) goes over to to help him. Well both of them managed to hold it down by putting almost all of their weight on the thing. It sounded like a jack hammer when it was jumping during certain bass tracks. This sucker digs deep!

[Face]

I really would love to build one of these. But the problem comes afterwords, where to put it?!

[ben62670]

I really would love to build one of these. But the problem comes afterwords, where to put it?!

It only takes up a little floor space. Less than a standard box. :)

[ben62670]

Any idaes on how to keep this thing on the floor other than bolting it to the floor, or not turning it up? I was thinking of pouring a 3" thick concrete round slab the diameter of the sub, and the sub to the slab with a rubber pad under the whole thing.

[Deadof_knight]

Parts Express I believe........Ben you have to post what the hz are Im getting ready for my rockford 18's I was thinnking of doing a push push Isobaric , or simply 2 of them side be side I already have the speakers .I just need the time to make the boxes and cut the wall under the satirs to put them in .....


The Isobaric should be nice and controlled plus go an octave lower ..... from what I understand but that means its down -3db or too have two seperate 18's haha shhhaaazaaam Instant earthquake

[ben62670]

Parts Express I believe........Ben you have to post what the hz are Im getting ready for my rockford 18's I was thinnking of doing a push push Isobaric , or simply 2 of them side be side I already have the speakers .I just need the time to make the boxes and cut the wall under the satirs to put them in .....


The Isobaric should be nice and controlled plus go an octave lower ..... from what I understand but that means its down -3db or too have two seperate 18's haha shhhaaazaaam Instant earthquake

If I knew this was going to happen I may have built a box to mount the sub in the side, and run the sonotube from the box. I have never seen anything like this. My 68 Bronco had two old Orion's in an Isobaric band pass that put out a ton of bass. the kind that makes your vision blurry, and your voice warble. This sonotube does the same. But your Idea of the ISO box sounds good. I have never felt bass this low in my life!

[dudeinaroom]

Try putting a bottom plate on. Attach it to the feet.

[Deadof_knight]

You need weight alot of weight !!!!!!!! and spike it to the floor ....Lead ballast !!

That is awesome to hear it gets my blood going .....ahhh sorry honey no I didnt fix your car I had to build my insane 18" inch sub enclosure ...... So I could rattle your fillings loose during the movies .... muhahhahaha

[Deadof_knight]

It looks good just HUGE !!! but that whats wonderful about it !!!!

[ben62670]

You need weight alot of weight !!!!!!!! and spike it to the floor ....Lead ballast !!

That is awesome to hear it gets my blood going .....ahhh sorry honey no I didnt fix your car I had to build my insane 18" inch sub enclosure ...... So I could rattle your fillings loose during the movies .... muhahhahaha

I would need to spend more on the lead than I did on the speaker:eek: Total cost was under $250. 35 for tube (used half), $166 for the driver plus shipping(sale), and I had the amp (850 watts clean at 4 ohms), wood, glue, and paint.
I will video tape this soon. how do I post a video?

[Early B.]

OK, but how does it sound????

[ben62670]

I haven't had time to run music through it yet. Just some HT tracks, and those base disk that kids have. I guessing but I don't think that it will be as tight as I want for music, but then again I am very picky. My GF thinks I'm like Monk on TV:confused:

Edit BTW I ws hitting 120dbl at 15hz
Full scan when I figure out how to keep it on the floor.

[tryrrthg]

Try putting a bottom plate on. Attach it to the feet.
Yep, this will help keep it from jumping, but it will likely still "walk". rubber feet might keep it in place.

[ben62670]

I am going to have to bolt the plates together. I had that in the plans, and a top plate(I already have them cut). I was in now hurry to put them on because I didn't expect it to jump like that.:eek: I am more than thriller with this thing for movies. I'm not sure about music yet. I will test that tonight.

[madmax]

Can't really tell by the pics, is the driver on the bottom? If so you could probably raise it higher off the ground to help with the bouncing.
madmax

[ben62670]

Can't really tell by the pics, is the driver on the bottom? If so you could probably raise it higher off the ground to help with the bouncing.
madmax

The plans call for 3" legs, and the driver is on the bottom. If i raise it would it have any adverse effects on the sound? Originally I was thinking of building 2 of these, but no way! It feels like you are in a plane and dropped a 1000' in a second to my ears:eek:
Thanks Ben

[ben62670]

OK I got the bottom plate on it now, and some foam tape. I know its kinda ghetto but I had some tape that you use when you mount a cap on a pickup. I covered about 70% of the plates surface. It stopped the jack hammer noise, and tightened things up a bit. now I need to get some time to hear some music.

[Early B.]

Please let us know. I'm real curious to hear how it sounds with music.

[ben62670]

Good. The only problem I am having is I am using an HK AVR-235 for a Pre Pro. I can not set the crossover manually for the sub. I have the front speakers set to 60hz (SDA-SRS). My mains put out good bass, but I wanted to take some stress off of them for HT. I am having a problem with resonance with the sub. The program I used didn't call for any foam, or poly fill. So I don't know if its the fault of the sub or if its do to a possible 12db crossover in the HK. This is looking like a good excuse for getting an Outlaw 990 with better bass management, and a 24db crossover:D. Now I just need to come up with $1150 for the Pre Pro.:( I had the woofer going so low today that pieces were falling from my drop ceiling. Also one of the problems is paneling in the room:mad: I can't do anything about the paneling because I don't own the place. Well back to the music. Fleetwood Mac

[ben62670]

As I thought. Lame pre for sub control. The HK would work nice with powered sub amps that have built in crossovers, but not for straight amps. Curve was very disappointing. I think my port is way to short!
10-68
15-80
20-84
20-84
25-86
30-93
35-95
40-95
45-96
50-90
55-92
60-91
65-93
70-91
75-89
80-90
100-83
110-81
120-80
140-77
160-72
180-69
200-71
220-72
240-68
260-64
300-70
Given that this is in room, in a corner I do realize that there are acoustics involved, but the low dip sucks. 10-25hz

[Face]

Given that this is in room, in a corner I do realize that there are acoustics involved, but the low dip sucks. 10-25hz
Can the human ear even detect noises below 20?

[ben62670]

Can the human ear even detect noises below 20?

I can't hear 25, but you can feel it!

[engtaz]

no but other senses can

[Face]

OK, I don't feel bad buying a sub that only goes down to 20. :D

Best of luck tuning that beast!

[ben62670]

My port is too long I checked with a couple programs, and I need to shorten it to 15 inches. I will be flat to 20, and then roll off real quick.

[engtaz]

When you finish you adjustments let us know the does and don't for making a SonoSub. Good work!

[jakelm]

My port is too long I checked with a couple programs, and I need to shorten it to 15 inches. I will be flat to 20, and then roll off real quick.

So your going to limit that monster to 20hz?...AAWWWWWW:(

[nebborjk]

What did you use the measure the SPL? If you used the Radio Shack SPL Meter did you correct the values? If those are uncorrected values then you're more linear than you realize.

[Sherardp]

Man I wish I could build one, the excitement from all the tuning alone would be worth it.

[ben62670]

corrected SPL's
10-88
15-92
20-91
25-91
30-96
35-98
40-97
45-98
50-92
55-93
60-92
65-94
70-92
75-90
80-92
This is in a 24*24 room with 8' ceilings, with the sub in a corner. I have not yet played with the port. The reason I would play with the port is to mainly get rid of that huge bump from 30-45. I realize that I would lose some max dbl, but I would prefer a flatter response. I also realize that I would lose quit a bit at 15, and a bunch at 10. The speaker over travels at I am guessing 30-45 any way.
What do you guys think?
Thanks Ben

[jakelm]

I think you need to increase the length of the port. Can you use WINisd? The bump between 30 and 45 could be corrected with a longer port. If you dont have Win ISD . Then shoot me over the size of your tube and size and length of your port. I can get the Theil specs from PE. I can put the info in my WINisd and see what it comes out to.

[ben62670]

I was messing with WINisd, and the sononosub.exe programs. The sono sub program came up with shortening the tube to 15". I also feel that is rather drastic, so I was thinking 20" tube.

[jakelm]

Putting the specs in WinISD accounting for a 10cuft incloser. This is what I got.

[jakelm]

That was tuning it to 18.5hz You might just have a bad null in your room.

[ben62670]

gross 10.07 cubic feet
effective volume 9.42
30*6 port

[jakelm]

gross 10.07 cubic feet
effective volume 9.42
30*6 port

So you have it tuned way below 18hz. Did you try a port length of 20" or 18"? It just seems the port is kind of long. Or reverse the polarity of the speaker.

[ben62670]

I just checked out your calcs, and my port is six inside, and is 30 long. What you had is what I was thinking of modifying it to. ;)

[ben62670]

So you have it tuned way below 18hz. Did you try a port length of 20" or 18"? It just seems the port is kind of long. Or reverse the polarity of the speaker.

I just tuned it for 15hz

[jakelm]

This is a read/out of a 9.45cuft with a 5.5" port 30" long. Port is way too long. I would think you need to cut about 7-10" off the length.

[ben62670]

I was thinking of whacking 10" of the port, and if need be I can always add a coupling to increase it again. The Specs you are showing in the second thumb are way different than sonosub's, and the room measurements. I think what the are giving you is if the sub was out in an open field. I have to run to the hospital now. My 1 1/2 yo girl just jumped out of her crib at her mom's house, and landed on her head.
I'll be back!
Ben

[jakelm]

OHH>..I hope everything is ok Ben...

[ben62670]

OHH>..I hope everything is ok Ben...
The only problem with JJ is her mother:D

[jakelm]

So she is ok...good

[engtaz]

Let us know if she's OK. Prayers sent out.

[ben62670]

I have been running some test, and I am now getting a completely flat response at all frequencies. 0-DBL oops

[engtaz]

Congrats

[jakelm]

I have been running some test, and I am now getting a completely flat response at all frequencies. 0-DBL oops

What did you change?

[jakelm]

Ben, I have been playing around with sonosub.exe. Is it supposed to give a Fr graph like winisd? All I do is put in my demisions and port size, etc. But it doesnt do anything

[ben62670]

Yeah I had a little over heat problem, everything is back to norn :)

[engtaz]

What's your latest thoughts on your sonosub? Any newer pics?

[ben62670]

It works better than expected. I was worried that with such a large enclosure that it would be boomy, but it is actually deep, and tight.

[engtaz]

Nice, Glad your enjoying it. What about the kids? Do they like it? My kids love the 15" Velo and the 10/12" Velo.

[ben62670]

Nice, Glad your enjoying it. What about the kids? Do they like it? My kids love the 15" Velo and the 10/12" Velo.

They sure do. I had Ashley put her hands on the wall while playing on of those bass disk, and she says "why is the wall moving?". No it wasn't excessively loud. I do care about those little ears.

[engtaz]

I know you take care of your kids just not your ears LOL

[jakelm]

What did you adjust your ports to?

[ben62670]

Actually I haven't modified the port yet. Most Music, and movies are set up not to go super deep, and I can't really hear below 30hz anyways. I should whack 10 inches off the port to flatten the hump a little, but I do run the SDA-SRS's which I set at 40-60 anyways. It just sounds to good to mess with. Also a concern is if I shorten it will there be more turbulence in the pipe?
Thanks Ben

[engtaz]

Lowest bass is felt more then heard. Just drive next to a car with bass driving loud. You probably hear the car rattles better then low bass. LOL

[jakelm]

Actually I haven't modified the port yet. Most Music, and movies are set up not to go super deep, and I can't really hear below 30hz anyways. I should whack 10 inches off the port to flatten the hump a little, but I do run the SDA-SRS's which I set at 40-60 anyways. It just sounds to good to mess with. Also a concern is if I shorten it will there be more turbulence in the pipe?
Thanks Ben

Actually.. the longer the port the more turbulance you have. If it sounds good dont mess with it.

[ben62670]

All I know is it sounds good, and stuff falls from the ceiling when I hit it full blast! I don't know how much I trust my Rat Shack meter below 80hz either.

[ben62670]

Catastrophe. The cone had separated from the voice coil. SonoSub had recommended a volume of 10 cubic feet. Parts express said 6. Now they are talking about charging me for the replacement of the woofer. To me it looks like the glue failed that holds the cone to the voice coil. I don't know I'll see what they say.
Ben

[jakelm]

Damn..sorry dude. Hopefully its a manufactures defect, they should replace it.

[ben62670]

Damn..sorry dude. Hopefully its a manufactures defect, they should replace it.

They are trying to blame it on a large volume cabinet. I have never seen the paper cone separate from th voice coil in such a manner. It has left a bad taste in my mouth. We'll see.

[jakelm]

Free air is free air, it shouldnt matter what cuft you have. A ported system has little to no resistance on the driver. Its not like a sealed incloser that has preasure to stop the driver. The spider coils do that. From what I understand.

[ben62670]

Well parts express contacted me today to tell me that they would not be warrantying my sub woofer. They stated that the box was to big. I had had this for only about 30 days, and the cone had separated during WOTW. It is rated at 800 watts RMS 1200 peak. I was putting 350 to it with Adcom power. the distortion lights barely flickered, and the sub stopped working.

[engtaz]

Is parts express the manufacturer or can you go the the manufacturer? That reaks.

[jakelm]

Is parts express the manufacturer or can you go the the manufacturer? That reaks.

Dayton audio is PE, as far as I know.

[engtaz]

that's what I was scared of. Dang where does it say limites on enclosure size. All I saw we recommended enclosure.

[ben62670]

They want 124.30 to replace the woofer they will eat the shipping.
I have had better service from the flea market.

[jakelm]

They want 124.30 to replace the woofer they will eat the shipping.
I have had better service from the flea market.

How did the subject of enclosure get brought up?

[ben62670]

How did the subject of enclosure get brought up?

They asked for my box parameters, and I didn't think that running at 350 watts would kill a 800watt RMS woofer!
Is there anyway you could pull up a max SPL reading on my sub with win ISD. I can't seem to find how to do it. They are recommending that I use a 5.8 ft box with a 4 inch port at 14 inches to get a fairly flat curve from 25, and up.

Thanks Ben

[jakelm]

Here with 5.8cuft enclosure... 25hz -3dbs

[Deadof_knight]

Well I would have to say Dayton blows then , you know if you did this a second time I could see them not warrantying it . But first time whether its a 5 cube ported or a 10 cube ported driver doesnt know much difference theres no real resistance only mechanical q from the driver.

[ben62670]

I am just stuck at do I want to invest in a woofer that I can only power at half throttle (which is plenty for movies) and cough up the $125 clams, or pay double to triple to really put out what I want. My SDA-SRSs go down to 40 pretty darn good.
Grrrrrrrrrrrrrrrrrrrr

[jakelm]

Check out TCsound. I believe the subs there are not much more. The TC-9 driver comes in 15" and is $215. Looks like one hell of a driver.

[Deadof_knight]

refurbished 18 inch Fosgate ........they will handle the power

[engtaz]

good luck

[heiney9]

I am just stuck at do I want to invest in a woofer that I can only power at half throttle (which is plenty for movies) and cough up the $125 clams, or pay double to triple to really put out what I want. My SDA-SRSs go down to 40 pretty darn good.
Grrrrrrrrrrrrrrrrrrrr

I wouldn't satnd for this from PE. I'd go as far up the ladder as you have to. It's completely bogus and you need to be the squeaky wheel. I don't do alot with PE, but they have been my prefered choice so far. Let them know you are involved in on-line communities that do alot of DIY and that you now can't rec. PE. I certainly wouldn't mention any names of specific sites like CP or DIYAUDIO, etc. But let them know you very unhappy with their service and you have no choice but to let others know of possible problems getting things taken care of at PE. Don't threaten, kust politely mention it ina concerning way.

H9

[engtaz]

well put H9

[Deadof_knight]

Yes keep it professional and you will get far.... when you get a no answer just ask for their supervisor..and go on....

[ben62670]

I already put out the $125 to get the replacement. I did spend quit a bit of time with them. Sales manager, and techs. The thing that gets me is the cone broke at the base near the voice coil. The paper tore. So when the paper tore it obviously scarped the insulation on the voice coil, and burnt part of it. I have never seen a driver come apart this way. I got the new driver today. I hope I have better luck with it. I have fried speakers over the years, but this one was definitely defective.

[Mazeroth]

I already put out the $125 to get the replacement. I did spend quit a bit of time with them. Sales manager, and techs. The thing that gets me is the cone broke at the base near the voice coil. The paper tore. So when the paper tore it obviously scarped the insulation on the voice coil, and burnt part of it. I have never seen a driver come apart this way. I got the new driver today. I hope I have better luck with it. I have fried speakers over the years, but this one was definitely defective.

I've been an active member on the PE forums for years and I've seen them do insane things to make customers happy. I can't believe they wouldn't help you out. I would DEFINATELY post about this over on their forums (you don't have to register to post, which is nice).

http://www.pesupport.com/cgi-bin/config.pl

[ben62670]

I've been an active member on the PE forums for years and I've seen them do insane things to make customers happy. I can't believe they wouldn't help you out. I would DEFINATELY post about this over on their forums (you don't have to register to post, which is nice).

http://www.pesupport.com/cgi-bin/config.pl

Thanks for the heads up.I will do that.
Ben

[engtaz]

Go for it Ben.

[engtaz]

What is the latest on the SonoSub?

[ben62670]

What is the latest on the SonoSub?

Got the new woofer installed, shortend the port to 15"s, 20hz. Don't like it any more. I am going to shrink it to a little less than 6' cubed from 10 cubed.

[engtaz]

Let us know how it goes and what your final measurements are.
Thanks

[ben62670]

I was happy with the sub with the 30" long port. I still have the other 8 feet of tube. If I am not happy with the shrunken sub. With the big tube, and short fat port it just lost a lot of umph, and sounds boomy. Also the smaller sub may look funny next to my new speakers. The old sub, and the new speaks are a little over 7 feet tall, and match well. :)

[ben62670]

Well I shrunk my SonoSub to 6 cubic feet, and changed the port back to 30"s. I sounds pretty good. Not as good as before, but handles more power. No more woofer slap at 30hz. Little tighter, but not quite as deep. I think the titanic woofer looks good on paper, but I am not overly impressed with it. No matter what you do to get good power, and a flat response you have to sacrifice 15hz, and below. I realize that you can only hear to 20 (me 25), but a big explosion at 20hz isn't just 20hz. Maybe I am just crazy? and I want too much. I don't know. I will run some test later.

[jakelm]

Ben, I agree, the Titanic woofer does look and sound better on paper. 6 cuft, is a rather small inclosure if you aiming for lower than 20hz. Actually, your encloser (5~6 cuft) and port length would be ideal for a 12" SVS woofer. Reading the specs of the Titanic seems to put the enclosure @ around 8cuft to reach down to 15hz. I agree with you on explosions. I prefer to feel (<25hz) rather than hear (>25hz) an explosion.

[ben62670]

Well I was messing with the settings. I turned the crossover point up to 60hz, bridged the amp back to 850 watts. I am liking it more and more. War of the worlds puts one hell of a strain on a sub. Chapter 13 goes way deep. As for typical home theater it is better than I thought. Music is much much better. It is hitting harder, and tighter. The more I listen to it the more I am liking it. It was louder, and deeper, but the SQ is there a lot more now. I also moved it a little. That made a big difference. The walls here are crap paneling (yuck). I got the hammer out, and a box of nails. I went around banging on the walls. Located a bunch of rattles. I am thinking of drilling some small holes in the walls, and spraying some foam in there to bond the walls together. It sounds less like a ghetto rig with the trunk rattling, license plate twanging on its mount. I also have to keep in mind that I am trying to keep up with SDA-SRS's. When I finish my other project I may have to build another sub to keep up. I don't know. We shall see. I am in my office right now about 60 feet from the sub, and while typing I have been enjoying the tightness of the bass.

Edit
BTW
gross volume = 5.8
Effective = 5
tuned to 21hz
port 6X30
4 feet tall without end cap

[jakelm]

Try not to blow the cone off of this one too Ben...lol

[ben62670]

Try not to blow the cone off of this one too Ben...lol

I was running it at 325watts the first time because I was scared of lack of self control. It handles the power very well, and tightened up the bass quite a bit. I am not messing with this one at all. The only thing that scares me is movies with surprise bass highly prevalent, flat at 15, and below hz. I could have gone with a 4" port. I have one here that I tried. It was a flared model that fit over the 6, and it just sucked the life out of the poor thing. I might have well put my hands over the port. My buddy stopped in, and he was trying to block the port with his hands. It was very funny watching his fingers flopping in the wind! We have an upholstery guy who rents from us who happens to keep in stock a ton of poly matting material. I doubled up on this stuff. It is about an 1 1/4 thick which helped take out the resonating boom. One thing about SonoSub is that a lot of people are under the impression that you don't need acoustic control in a round tube. BS. egg crate sucked, the poly batting in sheets worked very well. I tried a various amounts, and types before sealing the lid. My friend, and I took turns holding the top in place while the other did the listening. :)

PS
The thing gets jumping around at certain frequencies, and rocks back and forth a couple inches.

[ben62670]

OK I have been running the thing for a while in its small form(less than 5 feet tall), and it sounds very good. It has no more peak at the 35hz45hz level that I had before. It is much flatter now. It goes from 20 on up very smoothly. The Adcom is bridged again, and running at 850 watts. Nice tight, powerful, and clean. The walls had a problem with resonating(cheap paneling), so I went around with a hammer, and nails while playing some bass heavy music looking for loose spots. I found a couple where the paneling had popped off the nails. They are fixed now. Things are good. WOTW used to reek havoc on my sub before. I had a big problem with over excursion at 15, and 35-40hz.:)

Conclusion (keep in mind I am extremely critical)

For $250 materials including sub(no amp) I don't see it being beat by much out there. I have my mains set at 0db gain, and the sub at -7 for music, and -5 for movies. Other wise it is way over bearing:) There are better subs out there for sure, but at this price I am very happy with the overall performance of the sub. For DIY on a budget this is a good sub. Don't use this thing sealed. It rolls off way to early. I had an infinity ILS120 sub with a 12 running at 500 watts bash. The list was over a $1000. This thing absolutely blows that thing out of the water. Not even close. You can't tell if the infinity is on while the sono is running. BTW The infinity is not regarded as a high end sub. The ratings from the mags said when it was tuned properly it was good, not great.

[engtaz]

pics of the new sub design change. and design how to's

Thank you and congrats

[ben62670]

pics of the new sub design change. and design how to's

Thank you and congrats

I don't want to show pics:mad: It's kinda like lobbing off 2 inches from your unit, and saying look what I did:eek:

[jakelm]

Congrats Ben. Thats just how I feel about both my DIY subs. For the price I paid to build them...they cant be beat.

[engtaz]

I don't want to show pics:mad: It's kinda like lobbing off 2 inches from your unit, and saying look what I did:eek:

Too funny.

[ben62670]

I will not complain about anything with my sub anymore. It kicks butt. I had company over, and they were watching WOTW. I was in a utility closet that is open to the ceiling above the ceiling tiles. When the sub kicked in I swear I could hear the corrugated steel rattling:eek: . There is 3 inches of concrete poured over the steel, and the bass was just tremendous, and tight. I would love to do a side by side with a nice SVS. I have read many post on SVS about being able to do structural damage, and after hearing mine I believe it!:)

[McLoki]

Congrats ben. For those of us interested, but not really keeping up - what did you end up with? What size (i.e. 20" tube 4.5' tall and stuffed with batting) making it how many liters (or cubic feet)?

What port did you end up with? (i.e. 30" long by 4" pvc pipe as the port tuning the whole thing for 18hz..)

It sounds like you are pretty happy with it. Are you getting alot of output below the tuning point of the sub? I was thinking of taking on a project like this and still trying to come to grips with what it looks like on paper compared to the real world....

Thanks,

Michael

[ben62670]

Congrats ben. For those of us interested, but not really keeping up - what did you end up with? What size (i.e. 20" tube 4.5' tall and stuffed with batting) making it how many liters (or cubic feet)?

What port did you end up with? (i.e. 30" long by 4" pvc pipe as the port tuning the whole thing for 18hz..)

It sounds like you are pretty happy with it. Are you getting alot of output below the tuning point of the sub? I was thinking of taking on a project like this and still trying to come to grips with what it looks like on paper compared to the real world....

Thanks,

Michael

Just a quick run down. I'm pretty tired here. It does roll off pretty quickly after 18HZ, but I think most subs do.
As for on paper... Well I could do an in room response, but they are usually pretty far off. The computer simulation shows it extremely flat from 20-100 +-2 db. It dug a bit deeper when I had it super sized, but had a huge peak between 35-45hz, power handling, and over excursion problems. I am feeding it 850 watts clean now, and would recommend a 500 watts amp. I have this thing turned way down so it does not over power the movies, and I turn it down even more with music. For all parts minus the amp it can be built for less than $300. I bought the sub for $166 on sale, and it is normally $200.
Keep in mind my room is 24'*24'
Everyone who has heard it has said Hly Sh!t:D It has made quite a few people jump when a bass scence comes up!

15" Dayton Titanic MIII driver 800 watts RMS
Total hieght with top End Cap = 55"
Gross volume=6 ft
effective= 5.1
SonoTube=18"*42"
port=6*30 20hz
Estamated weight=80lbs
2'" thick woven poly batting material aplied to cylender walls

Please anyone feel free to contact me with any questions if you are seriously contemplating this build.

Ben

[Deadof_knight]

Hey Ben where did you get that tube you bought a packing company ?

[ben62670]

Hey Ben where did you get that tube you bought a packing company ?

Local lumber supply yard, and I got the 6" PVC at Lowe's.

[Deadof_knight]

Hey Ben , do you know what sizes those tubes come in you bought ? i havent been yet or i would know

[ben62670]

Hey Ben , do you know what sizes those tubes come in you bought ? i havent been yet or i would know

I saw a whole bunch of different sizes at the local lumber yard. They went up to 24" where I went. From 6 to 24's by 2 inch increments.

[Deadof_knight]

thanks