SDA SRS 1.2TL just acquired

vmaxer

This is a continuance from the looking for SDA's thread.

You can see the first few posts here:
http://www.polkaudio.com/forums/showthread.php?t=29951&page=22

It seems that the speakers are in fact the 1.2TL verson.:D

Now for some concerns...I am using a Sunfire Signature Grand 405 X 5 to power the speakers. At the moment I do not have them bi-amped. The drivers would "pop" :eek:when I started pushing them and I have learned through Lasareath that the amp I am using isn't common ground and that I need a AL-1 cable...anybody have one for sale??

Can I unhook the cable that connects the speakers together and listen to them like that until I have a AL-1 cable?? I know they won't sound as good...


I also have 2 bad tweeters....anyone have any SL3000 tweets?? I am going the check on the RDO 198-1 on Monday but I really need to slow down on spending until I can sell some stuff and recover..

Thanks for all the help!!

zarrdoss

Don't know about the other stuff but sl 3000 are hard to come by RDO 198's are your best bet and replace all of them.

gdb

If you're good at searching... I think Darqueknight made his own interface to perform like the AI-1 cable. I seem to recall that it was named "dreadnaught". Maybe you can put one together for yourself a lot easier than locating the Polk item?? I found it (unbelievable!) for you,link below.:)

http://www.polkaudio.com/forums/showthread.php?t=74472&highlight=dreadnaught

Marty913

Yes, you can unhook the interconnect cable and listen to them that way, and yes they won't sound anywhere close to as good (but better than nothing).

An A-1 cable is even more rare than SL3000's. You can make one. Start reading here:

http://www.polkaudio.com/forums/showthread.php?t=74472

nooshinjohn

Lasareath is incorrect. The Cinema Grands are in fact common ground designs. I have my tl's biamped with one right now, running the sda cable between the speakers and They perform flawlessly. It is more likely, unfortunately, that there is a driver or two that got damaged in getting them home.

george daniel

If you follow DK's thread the "dreadnaught" is pretty easy to build,,I've made two,, if you do not feel up to the task,,Ben will build you one,,just shoot him a pm,,good luck with you speakers,,I have 6 sl-3000's,,check your inbox.

nooshinjohn

george daniel wrote: »

If you follow DK's thread the "dreadnaught" is pretty easy to build,,I've made two,, if you do not feel up to the task,,Ben will build you one,,just shoot him a pm,,good luck with you speakers,,I have 6 sl-3000's,,check your inbox.

A dreadnaught is not needed as it will do nothing to solve the troubles he is having. The Sunfire amps are all common ground designs and cannot be causing the popping sound he is hearing unless there is an amp problem. I suggest trying another amp such as the two channel Sunfire that you have, and see if the trouble is still there. If it is, then you have a driver issue.

vmaxer

nooshinjohn wrote: »

A dreadnaught is not needed as it will do nothing to solve the troubles he is having. The Sunfire amps are all common ground designs and cannot be causing the popping sound he is hearing unless there is an amp problem. I suggest trying another amp such as the two channel Sunfire that you have, and see if the trouble is still there. If it is, then you have a driver issue.

Thanks, But I don't have a 2 channel Sunfire. I have 2 5 channel Sunfires, a 200 X 5 and a 405 X 5...

Everything was working great when I was driving the LSi 15's??? Is there a way to check the drivers??

zarrdoss

I just had a problem with one of my MW on my 2.3tl's where the terminal on one of the speakers was loose ( the rivet) and shorting out on the basket. you might check it out.

hearingimpared

Are the popping sounds coming from the tweeters or the mids?

nooshinjohn

I would gently press on them with fingers as near the centers as possible, and ear as close to the driver as you can get it and listen for any scratchiness. That is only partially effective. you can also eliminate the sda drivers by listening to the speakers without the cable connected and run up the volume slowly again. If you hear the popping without the cable in place then you know you have a stereo driver going out. Others that have more experience with the big dogs may want to speak up here as well..

george daniel

nooshinjohn wrote: »

I would gently press on them with fingers as near the centers as possible, and ear as close to the driver as you can get it and listen for any scratchiness. That is only partially effective. you can also eliminate the sda drivers by listening to the speakers without the cable connected and run up the volume slowly again. If you hear the popping without the cable in place then you know you have a stereo driver going out. Others that have more experience with the big dogs may want to speak up here as well..

Heck,, if he does not need a AI-1,why are we talking about it? If he is trying to rule out his drivers,,just pull em' out,,connect speaker cable,, turn up volume slooowly,, let us know what you find.

vmaxer

zarrdoss wrote: »

I just had a problem with one of my MW on my 2.3tl's where the terminal on one of the speakers was loose ( the rivet) and shorting out on the basket. you might check it out.

Did that make them pop?? I have found a couple loose so far, don't know if they are shorting or not...How did you correct it??

jerryj12

Billy I have a couple of 2 channel carver amps here if you need one to test with. Let me know and I will ship you one out.

Jerry

F1nut

I think the problem is that you have something called the SAD SIRS 1.TL and not the SDA SRS 1.2TL.

leroyjr1

f1nut wrote: »

i think the problem is that you have something called the sad sirs 1.tl and not the sda srs 1.2tl.

Ding ding we have a winner...

vmaxer

QUOTE=F1nut;1100596]I think the problem is that you have something called the SAD SIRS 1.TL and not the SDA SRS 1.2TL.[/QUOTE]

:oSounds about right...but it's what I have to work with and with some time and help I think they will be great.:p

How the hell did I do that??:eek:

I think I remember reading on here that you are the expert in wood repair...one of these has a spot from a flowerpot or something...see photo.

[

vmaxer

can anyone edit that and correct it??

zarrdoss

Now this will forever be the SAD SIRS 1.TL thread

F1nut

I think I remember reading on here that you are the expert in wood repair...one of these has a spot from a flowerpot or something...see photo.

There's only one way to get that out, strip the finish, clean with mineral spirts, let dry for a few days, lightly sand with 150 grit in the direction of the grain to open the pores and then apply generous amounts of Oxalic acid. Follow the directions and do not breath the dried crystals. I would do both tops to keep everything the same. Repeat the application if needed. When you're satisfied that the black mark is gone, let dry for a few days, lightly sand again with 150 grit serrated in the direction of the grain until smooth. You are now ready to stain and finish.

vmaxer

Does anyone here have a wiring diagram for the tweeters and all drivers?? I want to be sure they are wired correctly.

Face

http://www.polkaudio.com/forums/showpost.php?p=677959&postcount=5

WastelandWand'r

F1, it seems like you are a stickler for procedure when it comes to wood. Sounds like a lot of work to me for a water ring. Krylon makes a multitude of colors and you can be done in about 5 minutes. Fluorescent is even an option for that 80's retro look.
Even a decorative place mat would fix it quick, and then you can set what ever you want on them without worries. Gotta stop watching HGTV.

Vmax, have you run them in mono, (meaning with only one side hooked up) to see if it is problematic to only one speaker? Here is to hoping that it is a simple fix and you enjoy those elegant monsters.

Nathan

vmaxer

WastelandWand'r wrote: »

F1, it seems like you are a stickler for procedure when it comes to wood. Sounds like a lot of work to me for a water ring. Krylon makes a multitude of colors and you can be done in about 5 minutes. Fluorescent is even an option for that 80's retro look.
Even a decorative place mat would fix it quick, and then you can set what ever you want on them without worries. Gotta stop watching HGTV.

Vmax, have you run them in mono, (meaning with only one side hooked up) to see if it is problematic to only one speaker? Here is to hoping that it is a simple fix and you enjoy those elegant monsters.

Nathan

I currently have all of the drivers out of the left side. I am going to check them out the beat I can and then ensure thay are wired correctly.

If I run the other side to check, should I connect the cable from the other speaker??

Thanks for the help..

vmaxer

WOW...It seems that Dorokusai corrected my thread title...Many thanks!!:D

Now, can you fix the speakers that easy??:eek:

F1nut

Black or blue is positive. White or green is negative.

Reasons for your popping drivers:

1. The drivers are bad, although it's unlikely that they are all bad.
2. The amp doesn't have the balls to control the drivers. Yeah, that's a possibility.
3. Something is wired out of phase.

F1, it seems like you are a stickler for procedure when it comes to wood. Sounds like a lot of work to me for a water ring.

Either do it right or don't do it at all.

WastelandWand'r

I was pulling your chain about the 'stickler'. I would hope no one would be wanting to spray Krylon on these.
Sorry Vmax for the derailing.
Nathan

nooshinjohn

F1nut wrote: »

Black or blue is positive. White or green is negative.

Reasons for your popping drivers:

1. The drivers are bad, although it's unlikely that they are all bad.
2. The amp doesn't have the balls to control the drivers. Yeah, that's a possibility.
3. Something is wired out of phase.

There is no possibility that a Sunfire Cinema Grand with 400+ wpc is not enough amp to control the 1.2tl's, as I run the same amp with no issues whatsoever. Phase issues and bad drivers are the only two possibilities here that make sense.

F1nut

Sure it is. Damping and current play a bigger role than rated wpc. However, since you have no problems, then other issues are the more likely cause. Another possibility would be he's cranking the volume too high.

hearingimpared

vmaxer, didn't you say you had two bad tweeters when you got the speakers home?

nooshinjohn

see below...