SDA SRS question, help please :)

SpeedyFE

Hi all!

On my SDA SRS speakers, hooked up properly with the inteconnect cable, the left speaker, all 4 tweeters are not working. I replaced one of the 4 with a working tweeter and still no dice. Any suggestions? Is there a fuse inside, or a x-over issue? Thanks! Also, everything on the right speaker is working perfect. Thanks

Paul

ben62670

Las got it.

SpeedyFE

so there is one poly switch for all 4 tweeters?

Is the polyswitch on the crossover?

Thanks guys...

ben62670

yep. yep.

SpeedyFE

awesome, let me take it apart and let you guys know how it ends up! Thanks!

SpeedyFE

this may be a first, check it out....

Toolfan66

Is it just me or does the E-0012-1 cap look disconected?

SpeedyFE

the leg is just broken off at the joint...it was just bouncing around when i took the x-over out!

SpeedyFE

i know it may be obvious, but would this make all 4 tweeters not work

like i said though, all woofers work along with the radiator...

Toolfan66

Well i think you found your problem? I woulder if this happened bringing them home.

Toolfan66

SpeedyFE wrote: »

i know it may be obvious, but would this make all 4 tweeters not work

like i said though, all woofers work along with the radiator...

Well the radiator works from the air preasure that the drivers produce.

SpeedyFE

thats a good point, maybe from a bump or something....well now the is posed:

do i use this as an excuse to completly redo the x-overs

does anyone know where to find just that replacement cap if I decide to just do that one...

thanks

gdb

Just solder a piece of wire in between, to join the two ends of the broken run. Quick and dirty fix for now and until you go for the complete upgrade.:)

SpeedyFE

thanks Las!! I may do that... I have to see how much it will cost though! You have done it?

gdb, i may do that just until i get enough for the complete upgrade, good idea.

ben62670

They are not TL. I will have the TL conversion up soon with detailed directions.

Lasareath wrote: »

Time to upgrade those crossovers.

Since you have them out!

Sal,



Call Sonic Craft http://www.soniccraft.com/ ; 501-620-4444, you will be speaking to Elliot.

Sonic Craft Generation 1 http://www.soniccraft.com/sonicaps.htm

"Sonic Capacitors Generation 1”

Ask for Custom Matched & as close to 1% tolerance as possible:

Qty Rating

(6) 12uf (he was able to get the 1% tolerance for me)
(2) 0.25uf (he is going to have problems matching this and will probably get within 8% tolerance which is okay. On mine I bought Mundorfs for these two. they were much closer than the Sonicaps.

(2) 13.5uf (he could get 3% tolerance here for me)
(2) 27uf (2% tolerance for me on this one)

Mills Wirewound Resistors – non-inductive http://www.soniccraft.com/mills_resistors.htm <http://www.soniccraft.com/mills_resistors.htm&gt;

All should be rated 12 watt

Qty Rating

(2) 2.7 Ώ
(2) 7.5 Ώ
(2) 11.5 Ώ (you may have to settle for 11 ohms here)
(2) 15 Ώ
(2) 22.5 Ώ (if you can only get 22 ohms that is okay)

To summarize, you will be ordering 12 capacitors & 10 resistors

Mention that you were sent to their site by the Polk Forum and maybe you'll get a little discount!

Toolfan66

Better yet talk to Ben.

Toolfan66

Nevermind he just posted. He is the guy to talk to SP.

SpeedyFE

yea, they are just SDA SRS

F1nut

Those are not SDA SRS crossover boards. What tweeter model do you have?

ben62670

Those speakers are the 1.2's with the SL2000's. The easy give away is the smaller caps, and the 20/40 shunts on the lows.

SpeedyFE

as far as i know the speakers are all original....the serial tag says SDA SRS

pics:

F1nut

Yep, those are 1.2's.

SpeedyFE

but how can they be 1.2s when the back serial pad says just SDA SRS??

ben62670

SRS just means signature reference series. The original srs's had the Blade blade IC and were 4ohms. These are Pin Blade 6ohms.

BTW I have a pair of those XO's on my desk getting the 1.2TL upgrade;)

SpeedyFE

nice!

Ok so the original SRS and SRS 1.2 are visually the same? Except for the blade blade over blade post which i have...

Is one better to have over the other??

thanks

Toolfan66

But the cover plate looks like the srs version. Guess the plates could have been extras or just swaped out.

ben62670

SpeedyFE wrote: »

nice!

Ok so the original SRS and SRS 1.2 are visually the same? Except for the blade blade over blade post which i have...

Is one better to have over the other??

thanks

The 1.2, and 1.2TL use a simpler cancellation setup for the SDA part of the XO. The SRS used big caps to prevent canceling the lower bass frequencies where the 1.2's bled of the bass cancellation signal via a large inductor. If you have a Blade blade socket on that speaker it is setup like the pin blade socket. no difference but appearances there.
Ben

Edit: can you pull one of the outer and inner drivers, and see what models they are?

Toolfan66

SpeedyFE wrote: »

nice!

Ok so the original SRS and SRS 1.2 are visually the same? Except for the blade blade over blade post which i have...

Is one better to have over the other??

thanks

Yes.

SpeedyFE

yes, I have the blade pin socket...

ben62670

SpeedyFE wrote: »

yes, I have the blade pin socket...

Thats a good thing. It is easier to make an upgraded IC cable for them:)

SpeedyFE

sounds good then, I guess a TL x-over upgrade and some tweets are in order once my wallet fattens up some time soon