Hot rodding my SDA 2.3s Questions

hogsfly

Ok been living with my 2.3s for a little while now.Have done some dyi like polyswitchs gone,drivers and PR's damping ,Improved IC. Now my problem do I go for the TL upgrade or just or do caps and go with new RDO's? Also I'm currently driving them with a older Technics amp SU-85A with 120 a channel dont listen at high levels just moderate levels;) Any amp advice and what about biamping? I listen to a wide range of muisic.I'm very pleased with the SDA's now.Thanks for any advice that u feel is important!!!!

NJPOLKER

Do everything

If you use the search function on this forum and do a lot of reading it will benefit you greatly.

Upgrading will cost a few bucks and will be well worth it to say the least. RDO's are a simple/easy upgrade and at $50.00 each a wise move.

After they burn-in and you get the benefit of the better tweeters I'd move on to the x-overs. This is when you need to study a little and ask questions. Its not that difficult if you prepare and take your time. You could always send them (x-overs) to our resident doctor (Ben) for the upgrade.

Mye sound spikes are a easy upgrade and a good one too! https://myesound.com/Home_Page.html

Good luck

hogsfly

I have the spikes that came with them and they are in use.Sounds like I need to do some more reading around here!!!!!!!!! You guys are awsome I think thats part of what makes the older polks the best even if they are 20 something!!!!!!!!!!!!!!!!!!!!!

george daniel

I think trying to turn them into tl's might be quite an undertaking,, when I had my 2.3's,, I upgraded the crossovers with sonicaps amd mills resistors,popped in the rdo 194's,,and i could have lived with those for years,,alas,, too much speaker for my room size..nothing wrong with a pair of upgraded 2,3's,,good luck,and enjoy.

Bubinga99

hogsfly, modifying 2.3's to 2.3TL (2.3SD really; SD=Silk Dome) is fairly costly, compared to upgrading the crossover and tweeters on an existing pair of 2.3TL's. All the inductors except one are different, all the R's except one are different, all the C's except 1 are different, and the crossover topology is slightly different so you have to change/add the different connections. 4 of the midbass drivers are different (or maybe it's 2; I forget), and I think there's also some cabinet structural differences.

There've been a couple threads about this. I'll see if I can find them later.

Bottom line, it can be done, but it's more work and more costly than a resto-mod of an existing pair of 2.3TL's.

edit: here's a link to one of the threads (and additional links within this thread)
http://www.polkaudio.com/forums/showthread.php?t=84257

dorokusai

I'd do the xovers and stick with the RD-0194.

schwarcw

dorokusai wrote: »

I'd do the xovers and stick with the RD-0194.

ditto that. I did exactly what Mark is suggesting. I did use the Mortite around the woofers and tweeters and put on some nice spikes. The modest, inexpensive changes tightened the base and seemed to focus the image. Don't forget to upgrade your interconnect cable. You can also get some better cable terminals and jumpers. Some folks will wire the terminals together to eliminate the need for a jumper. This is a very cheap mod if you don't intend to biwire or bi-amp. Plus if you use ring terminals the mod is completely reversible.

Good luck! The SRS-SDA 2.3's are awesome sounding speakers!

nooshinjohn

+1 to what Doro said. Someone will correct me if I am wrong here, but I believe there to be a few differences in the internal cabinet bracing as well.

F1nut

hogsfly, modifying 2.3's to 2.3TL (2.3SD really; SD=Silk Dome) is fairly costly, compared to upgrading the crossover and tweeters on an existing pair of 2.3TL's. All the inductors except one are different, all the R's except one are different, all the C's except 1 are different, and the crossover topology is slightly different so you have to change/add the different connections. 4 of the midbass drivers are different (or maybe it's 2; I forget), and I think there's also some cabinet structural differences.

Not to mention that the right speaker would have to become the left speaker and vice versa.

If you really want 2.3TL's, buy a pair.

Bubinga99

F1nut wrote: »

Not to mention that the right speaker would have to become the left speaker and vice versa.

Interesting...I did not know that part of the story.

So a regular 2.3 is oriented like this? (just guessing) :

left speaker
S
DTs
DTs
ST

right speaker
S
sTD
sTD
TS

where T is for tweeter, D is for dimensional driver, and S and s are the stereo drivers (and I'm just guessing, they are set to have slightly different response)

F1nut

Yeah, basically except the top and bottom outside edge drivers are sub-bass (SB) drivers.

left speaker
SB
D T S
D T S
SB T


right speaker
......SB
S T D
S T D
...T.SB


Damn thing won't let me post the letters where I want, but you get the idea. Let's try adding some dots.

hogsfly

Well First of all THANKS to everyone for some good info!I have descided to do the Xovers first and then RDO's after caps burn in well be moriting drivers after its all done. Have it already just did use it cuz I knew I'd be opening them up again.Felt kinda bad opening them up bein the orginal owner hadn't but after upgrade we will seal them up and not look back!!!!!!!!!Will let you all know when its done .THANK YOU ALL