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

[VR3]

Link was added on how to remove Hot glue 06/14/12

[nooshinjohn]

Congrats on becoming a STICKY!

And thanks for the link... This is a brilliant idea that was long overdue imho.

[Toolfan66]

Yes a great Idea!!


Thanks!!

[VR3]

Updated 6/15

[nap]

Posted this in the other thread but I didn't want it to get glossed over. Some info 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


Cheers.

[VR3]

Thanks Nap

Updated page for information on common ground amplifiers and Dreadnou

[vstarkwell]

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

I have a SDA II owners manual if you're interested in adding it to your link?

[VR3]

Sure!

Can you email it to me?

Vr3Mods@GMail.com

thanks!

[vstarkwell]

Sure!

Can you email it to me?

Vr3Mods@GMail.com



thanks!

Sorry I missed this earlier, email has been sent.

[VR3]

Added SDA 2 manual!

Thanks!

[JMSSDA2B88]

When I bought my SDA 2B Studios back in 1988, the salesman gave me a pamphlet that detailed how the salespeople were supposed to demonstrate the SDA's. A lot of it was positioning of the speakers and is covered under the owner's manual. It also included 3 pages of songs to demonstrate the abilities of the SDA's. The guy said they normally didn't give out this pamphlet. I'll send it to you tonight/tomorrow and you can look it over and see if you want to post it under other information.

[VR3]

Fixed some broken links, all links now point to an external source

Added sales brochure/general setup information

[VR3]

Added link to 40 page pdf to help ID vintage Polk models

[VR3]

Updated 7/20 to include crossover design and progressive point source info

Thanks!

[PolkieMan]

You know I see all these SDA ads and reviews selling on Ebay for like $10
I wish we had a place to put every old ad and review in one place.

[VR3]

find them and I will add it!

[PolkieMan]

I will go digging

find them and I will add it!

[PolkieMan]

I can do a better scan but the larger file size will not post

I will go digging

[VR3]

Updated 8/29/12

Refined the organization, added a few more links, updated some info

Thanks

[VR3]

Added Link on how to convert a SDA1 to a SDA 1A

[headrott]

Trey, can you add the "bass brace" mod that Raife did for his 1.2TL's and/or SRS's please? I didn't see it on your page, and others may like to read up on how Raife did it. Thanks Trey.

[VR3]

I actually searched for this when I first did the page... no such luck finding the link...

Do you by chance have it?

Thanks

[EndersShadow]

I actually searched for this when I first did the page... no such luck finding the link...

Do you by chance have it?

Thanks

Trey, look at post 32 here: http://www.polkaudio.com/forums/show...=1#post1640225

[VR3]

ADDED and done :-D

Thanks

[EndersShadow]

ADDED and done :-D

Thanks

No problem! That site is a great reference I am glad to help get built so when my SDA time comes, bam no work to find all this crap, just head to your site and start printing

[VR3]

Yup yup....

I try to keep an eye on new stuff and obviously as I do mods I learn more and More, like the 1A information...

Fun stuff either way :)

[headrott]

Wow, you guys are too quick! Anyway, thanks Ender and VR3.

[EndersShadow]

Wow, you guys are too quick! Anyway, thanks Ender and VR3.

Its what happens when you have insomnia, you stare at the computer most of the night ....

That and I love you guys enough to google search and track it down

[VR3]

Jimmy Johns fast... FREAKY