My New TOY!! Dynakit 70 Pics*

[faster100]

Heres the Dynakit ive been talking about.. just picked it up locally.. needs some tubes which Organ may have for me.... heres a few pictures........ This thing looks like new, manual looks new, I'm pretty excited!!!

[faster100]

and

[faster100]

last, for now........

[faster100]

inside, the camera makes it look... not as nice and shiney to the eye that it is... damm macro

the tubes that are in it are original marked Dynaco's....

[Zero]

Looks good, congrats !

[madmax]

Looks great! How does it feel to have your first really good amp? (you'll understand the question after you listen to it. :D) Welcome to the bottle head club...
madmax

[Vr3MxStyler2k3]

Looks like Sean's old tubey! LOL

Lookin good, congrats!

[madmax]

That's real Man Gear there MX...
madmax

[Vr3MxStyler2k3]

real man's gear eh?

LOL, alrighty than...

[Airplay355]

looks more like old mans gear to me :p

[faster100]

Just got in from visiting and playing show and tell with the new amp over at spasticpitbulls (pauls) and demoing the Tosh 3960 as well i brought over... I like it alot... came with mint original manual with matching serial numbers to the amp (not that it matters) and the enclosed pull out break away sheet for the amp... Real real clean....... Thanks Guys

[gidrah]

Congratulations. It looks like it's in awesome shape! You'll love it.

I've gotta ask. How much?

[faster100]

$275.00 in mint shape.... :)

[gidrah]

Frickin' thief. I've seen ones in similar condition go for twice that and more. And yet even if you paid twice the price, it'd be worth it.

What speakers are you planning on using with it?

[Airplay355]

what r the things on it that say left and right?

[faster100]

pre amp inputs...... airplay

well speakers.. i have nothing interesting ... I have Lsi7's and Rti38's or Rt25i's.... which are all nice

[HBombToo]

Originally posted by faster100
i have nothing interesting ... I have Lsi7's and Rti38's or Rt25i's.... which are all nice

its time to buy sda technology:D

twin

[dcarlson]

Good stuff. :)

Now the fun starts. There's much you can do. ;)

[gidrah]

What is it now, like 5 members that own this amp? Not bad considering the wattage. It could be more. Heck, it's the weekend RuSsMaN might be taking pics of his new one right now.

I would think the 7's would go nice, but I can't be certain.

BTW - I claim dibs! I was the first that I know of.:D

[organ]

Looks awesome. Congrats. I'm sure you'll be very impressed with the sound once you get it up and running. There's so much you can do to the amp.

Mine sounded great on the RT5, so try it out with your RTi38. Believe me, this is the only time you'll say the RTi sounds better than LSi. The LSi is too difficult for the amp to drive. The RTi will have A LOT more tube 'magic'.

In the future when you feel like uprading, you might want to consider going high eff and modify the amp to triode(very easy).

You're going to enjoy that amp. Did you get a demo at the seller's home?

Maurice

[faster100]

No demo, but he's a real stand up sounding guy.. we met locally and he showed the amp, explained the whole thing.. removed the covers, showed me how to bios it.. show me the manual and went into details where it came from, how he ran it and the whole nine yards, very extensive sale not just heres your money im outta here.. he sells vintage gear regularly on e-bay with about 500 positive feedbacks... seems knowlegable as well... plus i saved what 30-50 on shipping and a possible damaged amp in transit. I'm excited to try this amp and see what it offers...

Thanks for all the good words..... will certainly give a review after i receive some tubes which will be soon as i have several offers i'm jumping on for tubes..

Later

[madmax]

Just re-read the thread. You got that for $275! What a deal, I would have expected maybe $400 to $600. The 3960 should work very nicely because it has a very sweet midrange, authoritive bass and nice highs which will compliment the amp.
madmax

[spasticpitbull]

Yeah Cliff thanks for bringing over a tube amp with no tubes...freaking tease :) ;) That thing weighs a freaking ton. Cant wait till you get tubes, we can demo the new M 10's on it. Isnt it driving you crazy staring at it and cant hook it up yet :)


Pauly

[faster100]

Yes it is... atop my Rotel.... which will be moved so the dyna can rest on its own little shelf... well by next weekend i should have it running i hope...

[organ]

If you get very desperate, I can send them out express. The shipping will be quite a bit more though. It usually takes about a week from up here to the US using regular shipping.

There are a few things to keep in mind before firing up the amp. Make sure you lower your bias all the way (counter clockwise) before turning on the amp. Then slowly raise it over a period of 1 hour to 1.5V. Keep an eye on the bias for the first few days. I keep mine at 1.5V because it tends to drift slightly. Also, DON'T turn on the amp with no speakers connected.

The amp needs to heat up for about an hour before it sounds really good.

Maurice

[gidrah]

Hey, when's the last time it was fired up? You may want to bring it up on a variac. Some shops will do this for you.

NEVER EVER fire it up without speakers connected.

P.S. Give plenty of ventilation. This sucker will heat a small room in the dead of winter. It will also suffer if you don't ventilate it well.

[madmax]

Don't ever turn on and try to play loud before it has warmed up. Things will happen. Also check the fuses to make sure they are the correct value before powering up the first time. All of mine blow the fuse periodicly so I keep a few on hand. Now would be a good time to check radio shack for some and if they dont have any you can order from partsexpress.com
madmax

[faster100]

The seller had it running a week ago, and who he got it from brought it up on variac before he got it.. I'm told... so should be good to go... Thanks for the tips on fireing this thing up.. :)

[faster100]

with the top off, polished it up today but you cant tell from the picture

[organ]

Sexy. One thing you can do is check the coupling capacitors on the driver board (6). My amp almost blew up a few sets of tubes because the old solder had soften up. While waiting for the tubes, you can replace them with new caps or re-solder the connections. It will kill output tubes easily if the solder joints are bad. If your EL34 tubes start to glow red or orange on the plates, the coupling caps is most likely the problem. Go easy when de-soldering so you don't screw up the tracing on the board.

Maurice

[faster100]

I dont have a solder sucker, can i just reheat and touch up the solder? Ive been cleaning and getting ready the amp.. turned down the bios controls so when i get the new tubes... I got a rectifier tube today new locally... because i didnt think i would have yours in time. so I'll have a spare also anyways.. Madmax's tubes should be here tomorrow (well today wed.) and should be able to bios it up and fire it up....

[organ]

Not sure about re-heating the solder joints. Take a look at them and gently wiggle the caps around. See if the joints move. Which tubes are you getting from Madmax? What brand rectifier tube did you buy?

Maurice

[faster100]

he has a set of el34's from his Jolida, similiar to Shuguang just not branded i believe... The rec tube was supposed to be china made Shuguang by luck.... it just said made in china i think though... It was new however. I want a NOS eventually

[organ]

DON'T USE THE SHUGUANG RECTIFIER TUBE. The Shugs got the name "Fire cracker in bottle" from Dynaco owners. For some reason, they like to blow up on Dyna amps and take out some components at the same time.

Read the info here: http://www.thetubestore.com/5ar4.html

I think you'll really enjoy a NOS Mullard. BIG difference when I installed mine. Everything improved especially the bass.

Maurice

[faster100]

SHIT!! sure enough thats the tube i have.. think they will take it back.. it was actually a store in another city... they shipped it here... but was only a day away

[organ]

Which online store did you purchase it from? Contact them and let them know your situation. I'm sure they'll take it back and give you a refund. They'll probably make you pay shipping though. Or you could trade for a different one. The one I'm sending you is a Sovtek. A copy of my Mullard with ribbed plates but it's a smaller tube. The Mullard sounds much better though.

Maurice

[faster100]

Ah nothing like that tube glow...

[organ]

Awesome. The warm sound and glow of vacuum tubes is what men call 'romantic'. Screw candles, roses and fancy dinners.

Maurice

[faster100]

Im digging it, love it so far...... glad this thing works ok. seems stable and clean sounding

[organ]

Just wait until you start to play around with different output tubes. It gets even better. If you want a really warm sound with good bass, try the SED. For a powerful sound, the EH 6CA7 is a great tube.

Maurice

[faster100]

Eh as in electro harmonix?

[madmax]

Keep in mind that new tubes need maybe 100 hours on them before they sound like they are supposed to. The ones I sent you probably only have a few hours on them but I'm not sure. The guy I bought them from said he upgraded them immediatly and I only had them in to test.

[faster100]

Oh ok, didnt even think about that... well they been being used all this morning, all afternoon yesterday and few hours last night.. gotta love that heat from the tubes in Florida... lol

[dcarlson]

Not just in FLA, it's been too hot up here for the last few days for me to use mine. It's great when it's cold out though. ;)

[organ]

Yeah, Electro Harmonix. Even though the EL34 I'm sending you is Svetlana, they're made by the makers of EH (Reflektor). They purchased the Svetlana name. Now the REAL Svetlana is called SED.

Your Svetlana sounds very similar to the EH EL34. I prefer the EH but you might like this one more.

LOL we let ourselves suffer in the heat for good sound. However, I get a special feeling watching that glow in the cold winter months:).

Maurice

[faster100]

well i guess over a weeks worth of play time and the amp is still running perfectly, This thing stays right at bios voltage.. 1.56, 1.55 what ever i set it at, cant wait to get the other tubes to try out. Thanks again for all the help from everyone...

[organ]

Sounds cool. Looks like your ST-70 can hold a steady bias better than mine. Mine usually drifts +/-0.1V through out the day.

Let me know how the new tubes sound when you get them. They should arrive very soon. Don't forget to lower the bias before installing them.

Maurice