All the Polk SDA upgrades located in one place!

[VR3]

I figured this would help some folks find all the tweaks!

If I missed any, please let me know! Please let me know if there is a better link than the one I used as well!

Thanks!

http://vr3mods.com/LCSDAUpgrade.html

[F1nut]

After twenty years capacitors start to fail and it is time to update them!

While that is true, electrolytic caps are inferior to begin with.

[headrott]

Good collection of SDA upgrades Trey. Thanks. For those looking to do the upgrades, true and a good point what Jesse (F1nut) said.

[drumminman]

That'll be very helpful to SDA owners. Nice to have most "how to's" in one place.

[TNHNDYMAN]

Great idea Trey- thanks for the effort.

[heiney9]

Very nice idea Trey! If I could make a suggestion to include links to the various links to building the AI-1 interphase.

H9

[VR3]

Please post the links here and I will add them!

I don't want to flat out say Electrolytic caps suck as I do not want to trash the stock product...

And for the reference of the future - this is under the "Learning Center" part of the site.

Thanks!

[heiney9]

Please post the links here and I will add them!

Thanks!

I'll try, when I find them. That's why I suggested it because the links aren't easy to find :smile:

H9

[Drenis]

Good stuff Trey.

[cnh]

Many thanks.

If I hang out here long enough maybe I'll develop the "courage" to revisit my rather dismal experience in Shop Classes and learn to DIY again (actually I didn't learn it the first time).

I marvel at how adept many of our members are at this DIY stuff. I bought my first soldering iron "ever" about a year ago, because a member of AK I had bought some speakers from had sold me a set that had loose wires on the mid-range, with no clips (bare wires) they had to be soldered on. After a call to a friend and a youtube video and an increase in blood pressure during the actual procedure, I managed to reattach the wires (with absolutely NO soldering experience whatsoever, none, I barely knew what I was doing). After that I kinda figured I would retire because I was told I'd need a soldering station for finer repairs. And I said, "What?" "Really?".

I just don't enjoy messing with things that I could F-up! It's nerve wracking, whereas for most of you it's "relaxing", and enjoyable hobby, kind of like Astronomy was for me in elementary school--but all I had to do back then was set up a telescope (no soldering, lol).

cnh

[VR3]

Also, anyone who has other information about the bass brace, removing top and bottom plates - etc.... let me know and I will them!

[Oldfatdogs]

Thanks Trey,This well be helpful to alot of people.Dan

[VR3]

Added a link to brochures, manuals, a site that has a lot of different models documented, how to construct an AI-1 cable

Does anyone have a more extensive list of how to identify different models?

[GlennDog]

Very helpfull (especially for us Newbies) . . . Thanks, Trey!

[chandler9a]

Thanks VR! extremely helpful.

[VR3]

Glad I could provide some help!

Please post here or PM any other info you guys would like to see make the list!

[vcwatkins]

Excellent. Thanks, Trey!

[VR3]

Ladies and Gents - spent a few more hours digging..

I added 20-30 more links!

Enjoy!

[evhudsons]

Wow! Awesome links! Mucho thanks

[Phasewolf]

http://polksda.com/ they have some nice info that you could link to.

[EndersShadow]

http://polksda.com/ they have some nice info that you could link to.

He's already linked to their site :smile:. He's got a buttload of info on his site now. Quite awesome!

[VR3]

Be on the look out for pages involving the LSi series, RT series, etc etc in the next few weeks! :)

I also plan on doing tutorials on how to trace circuits, how to solder, etc etc etc!

[VR3]

This is also a stick now at the top of the vintage section! :) Thanks Nap!

[EndersShadow]

Be on the look out for pages involving the LSi series, RT series, etc etc in the next few weeks! :)

I also plan on doing tutorials on how to trace circuits, how to solder, etc etc etc!

You gonna do video's too :wink:

[VR3]

I have contemplated silent films! :)

My southern draw does not equate to educational films ;)

[drumminman]

I have contemplated silent films! :)

My southern drawl does not equate to educational films ;)

Fixed it for ya'! :smile:

[cnh]

I know for a fact that we have some "broadcast quality voices" on this site who would be only too glad to do the narration!

Many of them are even better than GB! lol

cnh

[EndersShadow]

I know for a fact that we have some "broadcast quality voices" on this site who would be only too glad to do the narration!

Many of them are even better than GB! lol

cnh

Lets get Ted Williams to do the voiceovers :biggrin:.

[audio_alan]

Great idea, thanks for the effort!

[DarqueKnight]

Thanks Trey!

[kidglove13]

Awesome!
Saves so much time from searching
Thanks!

[gimpod]

I figured this would help some folks find all the tweaks!

If I missed any, please let me know! Please let me know if there is a better link than the one I used as well!

Thanks!

http://vr3mods.com/LCSDAUpgrade.html

You may want to put this link in there too.

http://www.polkaudio.com/forums/showthread.php?118471-Current-Production-Vintage-Support (http://www.polkaudio.com/forums/showthread.php?118471-Current-Production-Vintage-Support)

as of 04/14/2011

[nap]

This is also a stick now at the top of the vintage section! :) Thanks Nap!

You're welcome. Re: The Bass Brace - a while back there was some question about it. I e-mailed Matthew Polk and he responded with some nice background info. I'll see if I can dig up that e-mail. Cheers. :cool:

[nap]

Back Again. Found it.

What follows is from Matthew Polk regarding the Bass Brace:

Tony –

The “Bass-Brace” was introduced as a recommended modification for the SRS 1.2 and was available free for the asking. The kit was composed of nothing more than a piece of all-thread, ?” I think, with a t-nut for the back of the cabinet and an selection of wall anchors. All late production SRS models came with the t-nut already installed in the back of the cabinet plugged with a bolt to seal the hole. (Note: when the all-thread is screwed into the cabinet it will often wind Dacron around it like cotton candy jamming in place and requiring removal of a driver to free-up.)



The “Bass-Brace” did make a noticeable difference in bass performance. Slam and speed were noticeably improved. If you anchored to a masonry wall the difference was really quite dramatic, more than you’d get from improving your speaker cables and even better than spikes.



However, the real reason for the Bass-Brace was not initially to improve performance. Around that time new industry safety guidelines were issued for loudspeakers which included a “tip test”. The tip test specified that with the speaker placed on an inclined plane at 10 deg. (as best I recall) it would not tip over in any orientation. Needless to say, the SRS products did not pass. That was a real problem and with an inventory of product already in the warehouse we needed a solution. The solution was the Bass-Brace which when installed prevents the speaker from tipping over. But, when trying it out we realized it also made a significant performance improvement. So, it became both a performance modification and a safety feature. However, it was very difficult to install and I doubt many SRS owners ever enjoyed the benefits. Over Amy’s objections I did install mine and anchored them to an 18” thick brick and masonry wall. It was very impressive.



Hope that helps



-msp

Hope this helps. :cool:

[quickr1]

anything for the ls 90? also in for the rt series.

[Drenis]

I wonder if there would be any benefits to doing this mod to a 3.1TL series SRS speaker... I may experiment sometime down the road.