New Polk SDA 1C owner
Comments
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I have been tearing my hair out because when I tried to check the dimensional drivers per the SDA handbook the left side was not working properly. The dimensional sound and the regular sound was both coming out of the 6511 speakers. The 6510 ones were silent. The right side seemed to be working properly. I rechecked the wiring in all of the speakers, but I can not figure it out. Any ideas would greatly be appreciated.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
No, it was the right one.Polk SDA 1C, Monitor 10A, Monitor 5jr+, RTI A3, CSI A6, TSi100, PSW505
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No, it was the right one.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
With just the positive and the ic leads hooked up there is no sound when I unhook one of the black leads from the big coil to the crossover board on the left side. When I unhook one of the black leads from the big coil on the right side there is still sound.Polk SDA 1C, Monitor 10A, Monitor 5jr+, RTI A3, CSI A6, TSi100, PSW505
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With just the positive and the ic leads hooked up there is no sound when I unhook one of the black leads from the big coil to the crossover board on the left side. When I unhook one of the black leads from the big coil on the right side there is still sound.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
I did the battery/phase test and when I did the left speakers only the stereo drivers moved. When I did the right side all four moved. I swapped the crossover boards, then got the reverse. Only the two stereo drivers on the right side moved. Do I have a bad crossover board?Polk SDA 1C, Monitor 10A, Monitor 5jr+, RTI A3, CSI A6, TSi100, PSW505
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I did the battery/phase test and when I did the left speakers only the stereo drivers moved. When I did the right side all four moved. I swapped the crossover boards, then got the reverse. Only the two stereo drivers on the right side moved. Do I have a bad crossover board?Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
I really appreciate all of the help westmassguy. You must be an early bird like I am. When I got the speakers they were in pieces including the boards so they were already off of the inductor base. Hooking up the battery was a stretch for my skills with speakers, but I am learning. I would think that something on the board is bad because when I switched them they behaved the same in both speakers. Which way should it be, all four drivers moving or just two? I have ordered new caps and resisters. Maybe when I install them it will be fixed. Unfortunately I have to go to work now. ( I know, where are my priorities.)Polk SDA 1C, Monitor 10A, Monitor 5jr+, RTI A3, CSI A6, TSi100, PSW505
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With the external speaker/amp wires removed, the IC cable removed, and all internal harnesses connected, attach the jumper wire to the external speaker terminals/binding posts, and BRIEFLY touch the wires to a battery. All four woofers should move, and move in the same direction.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
One other thing, double check that the driver and tweeter harnesses are connected to the proper connector on the board. The connectors are identical, they're inverted on the board, but could be inserted into the wrong connector.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
Here are some pictures of the board that is suspect. Does anyone see anything obviously wrong with it?
Polk SDA 1C, Monitor 10A, Monitor 5jr+, RTI A3, CSI A6, TSi100, PSW505 -
aldine, while my SDA's are not 1C's (my previous pair were) I recently finished a pair of SDA CRS+'s, with just about every mod that we know of around here. I put a thread together documenting what I did, if you want to have a look, here is the link:
http://www.polkaudio.com/forums/showthread.php?137026-My-new-4.1TL-s-are-complete!Good music, a good source, and good power can make SDA's sing. Tubes make them dance. -
Here are some pictures of the board that is suspect. Does anyone see anything obviously wrong with it?Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
Yes I did. It has to be something with that board because with the battery test only the stereo speakers moved when it was installed in both speakers. All four speakers moved on both sides with the other board in it.Polk SDA 1C, Monitor 10A, Monitor 5jr+, RTI A3, CSI A6, TSi100, PSW505
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Yes I did. It has to be something with that board because with the battery test only the stereo speakers moved when it was installed in both speakers. All four speakers moved on both sides with the other board in it.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
Take a closer look at solder connection with the arrow pointing at it. It's hard to tell anything much from a photo but it looks suspect to me. Check the lead going into it on the other side of the board as well.
- SDA 2BTL · Sonicaps · Mills resistors · RDO-198s · New gaskets · H-nuts · Erse inductors · BH5 · Dynamat
- Crossover upgrades by westmassguy
- Marantz 1504 AVR (front speaker pre-outs to Adcom 555)
- Adcom GFA-555 amp · Upgrades & speaker protection added by OldmanSRS
- Pioneer DV-610AV DVD/CD player
- SDA CRS+ · Hidden away in the closet
- SDA 2BTL · Sonicaps · Mills resistors · RDO-198s · New gaskets · H-nuts · Erse inductors · BH5 · Dynamat
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Take a closer look at solder connection with the arrow pointing at it. It's hard to tell anything much from a photo but it looks suspect to me. Check the lead going into it on the other side of the board as well.
Yeah it does, and I believe that's the 1.25 mh inductor I believeHome Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
Take a closer look at solder connection with the arrow pointing at it. It's hard to tell anything much from a photo but it looks suspect to me. Check the lead going into it on the other side of the board as well.
I would agree with this completely. That solder joint looks to be a cold joint where solder did not stick to component lead very well. It's probably hard to check from the component side as it looks like it's one of the leads from the 1.25mh inductor which is very close in to the 2.5mh inductor you may need to cut the cable tie holding it to the board. i would solder that joint very well and check it first. I would be willing to bet it solves your problems. Good luck.
I almost forgot to mention you may need to check the inductor lead to be sure the insulating coating is cleaned back from this area good to be sure the solder can stick to the copper good. I only mention this because the boards have all stock components and don't appear to have been tampered with so there's no reason this one joint should have been touched either. This would mean that either it was just a bad joint that became looser over time or it was a good joint with not much to stick to in the first place.If con is the opposite of pro, is Congress the opposite of Progress?!
Monitor 5Jr, Monitor 5, RTA12, RTA 15TL, SDA 2A, 1c, SRS 2, 1.2TL, CRS, Atrium. -
Mr. Bubbles wrote: »I would agree with this completely. That solder joint looks to be a cold joint where solder did not stick to component lead very well. It's probably hard to check from the component side as it looks like it's one of the leads from the 1.25mh inductor which is very close in to the 2.5mh inductor you may need to cut the cable tie holding it to the board. i would solder that joint very well and check it first. I would be willing to bet it solves your problems. Good luck.
I almost forgot to mention you may need to check the inductor lead to be sure the insulating coating is cleaned back from this area good to be sure the solder can stick to the copper good. I only mention this because the boards have all stock components and don't appear to have been tampered with so there's no reason this one joint should have been touched either. This would mean that either it was just a bad joint that became looser over time or it was a good joint with not much to stick to in the first place.
Might not be a bad idea to re-flow all the joints in the dimesional section of the board.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
You guys are amazing. That was it. The inductor lead had broken off. I soldered it back on, did the battery test and all four woofers moved. I did not have a lot of wire on the inductor lead to work with so I am not sure if it will hold up. Thank you very much for your help. I am now listening to my "new" SDA speakers the way they are supposed to sound for the first time.Polk SDA 1C, Monitor 10A, Monitor 5jr+, RTI A3, CSI A6, TSi100, PSW505
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You guys are amazing. That was it. The inductor lead had broken off. I soldered it back on, did the battery test and all four woofers moved. I did not have a lot of wire on the inductor lead to work with so I am not sure if it will hold up. Thank you very much for your help. I am now listening to my "new" SDA speakers the way they are supposed to sound for the first time.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
Yes be sure that they are labeled before you unplug them when you do any work as westmassguy said they will plug into either one.westmassguy wrote: »One other thing, double check that the driver and tweeter harnesses are connected to the proper connector on the board. The connectors are identical, they're inverted on the board, but could be inserted into the wrong connector.POLK SDA 2.3 TLS BOUGHT NEW IN 1990, Gimpod/Sonic Caps/Mills RDO-198
POLK CSI-A6 POLK MONITOR 70'S ONKYO TX NR-808 SONY CDP-333ES
PIONEER PL-510A SONY BDP S5100
POLK SDA 1C BOUGHT USED 2011,Gimpod/Sonic Caps/Mills RDO-194
ONKYO HT RC-360 SONY BDP S590 TECHNICS SL BD-1 -
congrats. Enjoy.If con is the opposite of pro, is Congress the opposite of Progress?!
Monitor 5Jr, Monitor 5, RTA12, RTA 15TL, SDA 2A, 1c, SRS 2, 1.2TL, CRS, Atrium. -
I'm glad to hear that little white arrow was helpful to you. Enjoy your speakers! Let us know what you hear when you get the new parts in the crossovers.
- SDA 2BTL · Sonicaps · Mills resistors · RDO-198s · New gaskets · H-nuts · Erse inductors · BH5 · Dynamat
- Crossover upgrades by westmassguy
- Marantz 1504 AVR (front speaker pre-outs to Adcom 555)
- Adcom GFA-555 amp · Upgrades & speaker protection added by OldmanSRS
- Pioneer DV-610AV DVD/CD player
- SDA CRS+ · Hidden away in the closet
- SDA 2BTL · Sonicaps · Mills resistors · RDO-198s · New gaskets · H-nuts · Erse inductors · BH5 · Dynamat
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I have upgraded the crossovers just as westmassguy did. I am listing to music I have been playing for 40 years and hearing overtones and subtleties I have never heard before. I am very pleased. Saturday the new tweeters are supposed to arrive. How long will it take for all of these components to break in? Also how much batting material should be in the speakers? Do I need to seal anything up?
Thanks for all of the help.Polk SDA 1C, Monitor 10A, Monitor 5jr+, RTI A3, CSI A6, TSi100, PSW505 -
I have upgraded the crossovers just as westmassguy did. I am listing to music I have been playing for 40 years and hearing overtones and subtleties I have never heard before. I am very pleased. Saturday the new tweeters are supposed to arrive. How long will it take for all of these components to break in? Also how much batting material should be in the speakers? Do I need to seal anything up?
Thanks for all of the help.
The Dacron batting should be tucked and tacked in place if neccesary, in the top section only. The bottom portion of the cabinet behind the PR should be clear of any batting.
Check all the internal seams. I usually run a bead of clear acrylic caulk around the interior seams, smoothed out with my finger tip, just to make sure everything is sealed tight. Make sure all your gaskets are good. Think about installing hurricane nuts and machine screws, Dynamatting the drivers and prs, and don't forget to glue the magnet assemblies while you have everything out of the cabinet.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
Thanks for the reply westmassguy. Since I bought these speakers in pieces I am not sure what parts are supposed to be there. I have gaskets for the tweeters, but not for any of the other speakers. What do you mean by "glue the magnet assemblies"?Polk SDA 1C, Monitor 10A, Monitor 5jr+, RTI A3, CSI A6, TSi100, PSW505
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Thanks for the reply westmassguy. Since I bought these speakers in pieces I am not sure what parts are supposed to be there. I have gaskets for the tweeters, but not for any of the other speakers. What do you mean by "glue the magnet assemblies"?
The magnets on vintage Polk woofers have a habit of shifting if they are dropped, or if the speaker itself is handled roughly. The glue that was originally used, deteriorated. I attached a photo showing a Polk driver that has had the magnet epoxied in place, and has been Dynamatted. The epoxy is applied to the joint where the back plate and magnet meet.
Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
Don't forget to apply epoxy on both sides of magnet where it meets the top plate and the back plate. The front plate is firmly attached to the frame and then the magnet glued to both the top plate and bottom plate so it can shift at either point or both.If con is the opposite of pro, is Congress the opposite of Progress?!
Monitor 5Jr, Monitor 5, RTA12, RTA 15TL, SDA 2A, 1c, SRS 2, 1.2TL, CRS, Atrium. -
Mr. Bubbles wrote: »Don't forget to apply epoxy on both sides of magnet where it meets the top plate and the back plate. The front plate is firmly attached to the frame and then the magnet glued to both the top plate and bottom plate so it can shift at either point or both.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/