Help With Wiring Of The SDA CRS That Has The Two MW6510 And One SL2000 Tweeter
Benjisan
Posts: 64
Can anybody provide me with the actual color of the wires and their placement on all three of the the drivers respective polarities + and -
I found the schematic in the picture below but it would really help me out if the wires were color coded respective polarities + and -
My main crossovers wires are Black and White for the SL2000 tweeter and MW6510 regular stereo driver and the dimensional driver crossover has a Blue and White wire.
I just picked these Polk SDA CRS up from Facebook for $75.00 but I had to replace one of the MW6510 drivers and both SL2000 tweeters. The person I got these from had everything all a part and the drivers in one big box.
I found the schematic in the picture below but it would really help me out if the wires were color coded respective polarities + and -
My main crossovers wires are Black and White for the SL2000 tweeter and MW6510 regular stereo driver and the dimensional driver crossover has a Blue and White wire.
I just picked these Polk SDA CRS up from Facebook for $75.00 but I had to replace one of the MW6510 drivers and both SL2000 tweeters. The person I got these from had everything all a part and the drivers in one big box.
Best Answer
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Odd, when I searched eBay this afternoon that didn't show up in my results.
Thanks F1 as I just purchased that cable from that vendor.
Answers
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Black and blue are positive
White negative -
Thank you Pitdogg.
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Hopefully you didn't put back in the SL2000's.Don't take experimental gene therapies from known eugenicists.
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Hi Xschop,
Yes I did. I have all the stock drivers that came in a box with the SDA CRS cabinets.
For the SDA Guru's here I would like to run this by all the experts.
All the drivers that came with these speakers test out just fine with my DMM for proper ohms. Of course I did notice none of the MW6510's have their magnets glued, but that will be taken care of once I sort out a bigger issue that is currently going on with the right speakers crossover network.
I'm not getting any sound from the dimensional driver on the right speaker. I get sound from the rights stereo driver, but nothing from the dimensional driver.
When I turn the balance knob on my Nakamichi CA 5 preamp all the way to the left the right speaker goes silent except for the tweeter. The left speaker has sound from all three drivers.
When I turn the balance knob to the right I get sound from the left speakers dimensional driver and the right channels tweeter and stereo driver only.
I verified all the connections from my Adcom GFA 555 speaker terminals outputs for proper polarity and those from the SDA CRS crossovers. Everything is what it is suppose to be as far as wiring color and polarity.
So the next logical step I did was to swap around the MW6510 dimensional driver for the stereo driver just to have peace of mind that it wasn't something with the MW6510 driver testing fine on the DMM but not producing sound.
The switch of the two drivers did nothing as the the exact same results were observed.
Is there anything that I should be looking for in the right speakers crossover network that I could test and in order to isolate what component has failed.
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Start with the SDA socket. The female receptacle contacts can get spread apart to the point the blade no longer makes contact.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
Which SDA cable, blade/ blade or pin/ blade
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These SDA CRS speakers are blade - blade.
Is there a way to test the IC socket by bypassing the external socket. I would like to test that part of the crossover network from within the cabinet if possible to definitely rule in or out the IC socket. -
These SDA CRS speakers are blade - blade.
Is there a way to test the IC socket by bypassing the external socket. I would like to test that part of the crossover network from within the cabinet if possible to definitely rule in or out the IC socket.
All you have to do is pinch the female contacts closer together to find out if that is the problem. It doesn't get any easier.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
These SDA CRS speakers are blade - blade.
Is there a way to test the IC socket by bypassing the external socket. I would like to test that part of the crossover network from within the cabinet if possible to definitely rule in or out the IC socket.
All you have to do is pinch the female contacts closer together to find out if that is the problem. It doesn't get any easier.
It is not the IC socket.
I'm going to pull the crossovers in that speaker to have a closer look at the components.
I do have another set of crossovers I purchased off of eBay a while back that are SDA CRS + and are pin-blade.
I could just swap everything out, but the only issue is I'm going to need a pair of MW6511 drivers which are hard to find as I've yet to see a single one show up on eBay.
Does anyone know of what drivers I could use as a suitable substitute. -
delete
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These SDA CRS speakers are blade - blade.
Is there a way to test the IC socket by bypassing the external socket. I would like to test that part of the crossover network from within the cabinet if possible to definitely rule in or out the IC socket.
All you have to do is pinch the female contacts closer together to find out if that is the problem. It doesn't get any easier.
It is not the IC socket.
I'm going to pull the crossovers in that speaker to have a closer look at the components.
I do have another set of crossovers I purchased off of eBay a while back that are SDA CRS + and are pin-blade.
I could just swap everything out, but the only issue is I'm going to need a pair of MW6511 drivers which are hard to find as I've yet to see a single one show up on eBay.
Does anyone know of what drivers I could use as a suitable substitute.
MW6502's... Have them in my current SDA's and previous ones.Don't take experimental gene therapies from known eugenicists. -
Why so quick to dismiss the socket?
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These SDA CRS speakers are blade - blade.
Is there a way to test the IC socket by bypassing the external socket. I would like to test that part of the crossover network from within the cabinet if possible to definitely rule in or out the IC socket.
All you have to do is pinch the female contacts closer together to find out if that is the problem. It doesn't get any easier.
It is not the IC socket.
I'm going to pull the crossovers in that speaker to have a closer look at the components.
I do have another set of crossovers I purchased off of eBay a while back that are SDA CRS + and are pin-blade.
I could just swap everything out, but the only issue is I'm going to need a pair of MW6511 drivers which are hard to find as I've yet to see a single one show up on eBay.
Does anyone know of what drivers I could use as a suitable substitute.
MW6502's... Have them in my current SDA's and previous ones.
Thanks I will see if I could source a pair of them. -
Why so quick to dismiss the socket?
I was able to check the female prongs with a DMM and compare them to the left speaker. The right speaker value in ohms is all over the place and finally reads over limit.
The left speaker reads a consistent ohms value that is stable. I don’t recall the exact value, but the right speaker is inconsistent and finally reads over limit.
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Why so quick to dismiss the socket?
I was able to check the female prongs with a DMM and compare them to the left speaker. The right speaker value in ohms is all over the place and finally reads over limit.
The left speaker reads a consistent ohms value that is stable. I don’t recall the exact value, but the right speaker is inconsistent and finally reads over limit.
You should get INF reading on both speakers according to this from the SDA Handbook:
George / NJ
Polk 7B main speakers, std. mods+ (1979, orig owner)
Martin Logan Dynamo sub w/6ft 14awg Power Cord
Onkyo A-8017 integrated
Logitech Squeezebox Touch Streamer w/EDO applet
iFi nano iDSD DAC
iPurifier3
iDefender w/ iPower PS
Custom Steve Wilson 1m UPOCC Interconnect
iFi Mercury 0.5m OFHC continuous cast copper USB cable
Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
Custom Vibration Isolation Speaker Stands and Sub Platform -
Gardenstater wrote: »Why so quick to dismiss the socket?
I was able to check the female prongs with a DMM and compare them to the left speaker. The right speaker value in ohms is all over the place and finally reads over limit.
The left speaker reads a consistent ohms value that is stable. I don’t recall the exact value, but the right speaker is inconsistent and finally reads over limit.
You should get INF reading on both speakers according to this from the SDA Handbook:
I don’t have the SDA CRS + crossovers in these units.
I have the SDA CRS crossovers with the two MW 6510 drivers and the single SL 2000 tweeter per cabinet.
I do have the testing chart like the one above for the crossovers
in my units to compare values. I’m not home at the moment but when I return I will take very specific readings and post them here. -
Gardenstater wrote: »Why so quick to dismiss the socket?
I was able to check the female prongs with a DMM and compare them to the left speaker. The right speaker value in ohms is all over the place and finally reads over limit.
The left speaker reads a consistent ohms value that is stable. I don’t recall the exact value, but the right speaker is inconsistent and finally reads over limit.
You should get INF reading on both speakers according to this from the SDA Handbook:
I don’t have the SDA CRS + crossovers in these units.
I have the SDA CRS crossovers with the two MW 6510 drivers and the single SL 2000 tweeter per cabinet.
I do have the testing chart like the one above for the crossovers
in my units to compare values. I’m not home at the moment but when I return I will take very specific readings and post them here.
Hmm, well the CRS had 2 MW6503 and 2 SL2000 tweeters. That schematic you posted above says it is for the CRS+ and it is for the Blade/Blade version.
George / NJ
Polk 7B main speakers, std. mods+ (1979, orig owner)
Martin Logan Dynamo sub w/6ft 14awg Power Cord
Onkyo A-8017 integrated
Logitech Squeezebox Touch Streamer w/EDO applet
iFi nano iDSD DAC
iPurifier3
iDefender w/ iPower PS
Custom Steve Wilson 1m UPOCC Interconnect
iFi Mercury 0.5m OFHC continuous cast copper USB cable
Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
Custom Vibration Isolation Speaker Stands and Sub Platform -
These SDA CRS speakers are blade - blade.
Is there a way to test the IC socket by bypassing the external socket. I would like to test that part of the crossover network from within the cabinet if possible to definitely rule in or out the IC socket.
All you have to do is pinch the female contacts closer together to find out if that is the problem. It doesn't get any easier.
It is not the IC socket.
I'm going to pull the crossovers in that speaker to have a closer look at the components.
I do have another set of crossovers I purchased off of eBay a while back that are SDA CRS + and are pin-blade.
I could just swap everything out, but the only issue is I'm going to need a pair of MW6511 drivers which are hard to find as I've yet to see a single one show up on eBay.
Does anyone know of what drivers I could use as a suitable substitute.
There is no proper mid-driver substitute for the MW6511. Not to mention, the PR's between the CRS+ blade/blade and pin/blade are different.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
Gardenstater wrote: »Gardenstater wrote: »Why so quick to dismiss the socket?
I was able to check the female prongs with a DMM and compare them to the left speaker. The right speaker value in ohms is all over the place and finally reads over limit.
The left speaker reads a consistent ohms value that is stable. I don’t recall the exact value, but the right speaker is inconsistent and finally reads over limit.
You should get INF reading on both speakers according to this from the SDA Handbook:
I don’t have the SDA CRS + crossovers in these units.
I have the SDA CRS crossovers with the two MW 6510 drivers and the single SL 2000 tweeter per cabinet.
I do have the testing chart like the one above for the crossovers
in my units to compare values. I’m not home at the moment but when I return I will take very specific readings and post them here.
Hmm, well the CRS had 2 MW6503 and 2 SL2000 tweeters. That schematic you posted above says it is for the CRS+ and it is for the Blade/Blade version.
I understand, but that's the only schematic that matches and is showing two MW6510 drivers and one SL2000 tweeter like the SDA CRS speakers I'm working on.
I've attached some pictures below to further illustrate that. Maybe my SDA CRS speakers are some minor variation that is not well documented in the SDA handbook.
And I just remeasured the IC socket in ohms for both speakers with a different DMM and here are the numbers:
Left Speaker IC socket reads 4.09 M-ohms
Right Speaker IC socket reads 25.19 M-ohms
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Gardenstater wrote: »Gardenstater wrote: »Why so quick to dismiss the socket?
I was able to check the female prongs with a DMM and compare them to the left speaker. The right speaker value in ohms is all over the place and finally reads over limit.
The left speaker reads a consistent ohms value that is stable. I don’t recall the exact value, but the right speaker is inconsistent and finally reads over limit.
You should get INF reading on both speakers according to this from the SDA Handbook:
I don’t have the SDA CRS + crossovers in these units.
I have the SDA CRS crossovers with the two MW 6510 drivers and the single SL 2000 tweeter per cabinet.
I do have the testing chart like the one above for the crossovers
in my units to compare values. I’m not home at the moment but when I return I will take very specific readings and post them here.
Hmm, well the CRS had 2 MW6503 and 2 SL2000 tweeters. That schematic you posted above says it is for the CRS+ and it is for the Blade/Blade version.
I understand, but that's the only schematic that comes close to my SDA CRS speakers that has two MW6510 drivers and one SL2000 tweeter.
Perhaps mine are some iteration of the SDA CRS and CRS+ that is not very well documented in the SDA Handbook.
I'm attaching some pictures to illustrate what SDA CRS speakers I have below.
Also I have retested the IC sockets with a different DMM for ohms and here is what the readings are.
Left speaker = 4.09 M-ohms
Right speaker 25.19 M-ohms
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These SDA CRS speakers are blade - blade.
Is there a way to test the IC socket by bypassing the external socket. I would like to test that part of the crossover network from within the cabinet if possible to definitely rule in or out the IC socket.
All you have to do is pinch the female contacts closer together to find out if that is the problem. It doesn't get any easier.
It is not the IC socket.
I'm going to pull the crossovers in that speaker to have a closer look at the components.
I do have another set of crossovers I purchased off of eBay a while back that are SDA CRS + and are pin-blade.
I could just swap everything out, but the only issue is I'm going to need a pair of MW6511 drivers which are hard to find as I've yet to see a single one show up on eBay.
Does anyone know of what drivers I could use as a suitable substitute.
There is no proper mid-driver substitute for the MW6511. Not to mention, the PR's between the CRS+ blade/blade and pin/blade are different.
Well maybe the MW6502 is the closest match that just might work well enough in this situation where the proper replacement driver is unobtainable.
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To me it's pretty clear you have the dual mw6510 CRS+ blade/Blade model. I'd further guess you have dual XO boards.
The CRS+ with the mw6510/mw6511 drivers have a single board XO and Pin/blade socket. -
Gardenstater wrote: »Gardenstater wrote: »Why so quick to dismiss the socket?
I was able to check the female prongs with a DMM and compare them to the left speaker. The right speaker value in ohms is all over the place and finally reads over limit.
The left speaker reads a consistent ohms value that is stable. I don’t recall the exact value, but the right speaker is inconsistent and finally reads over limit.
You should get INF reading on both speakers according to this from the SDA Handbook:
I don’t have the SDA CRS + crossovers in these units.
I have the SDA CRS crossovers with the two MW 6510 drivers and the single SL 2000 tweeter per cabinet.
I do have the testing chart like the one above for the crossovers
in my units to compare values. I’m not home at the moment but when I return I will take very specific readings and post them here.
Hmm, well the CRS had 2 MW6503 and 2 SL2000 tweeters. That schematic you posted above says it is for the CRS+ and it is for the Blade/Blade version.
I understand, but that's the only schematic that comes close to my SDA CRS speakers that has two MW6510 drivers and one SL2000 tweeter.
Perhaps mine are some iteration of the SDA CRS and CRS+ that is not very well documented in the SDA Handbook.
I'm attaching some pictures to illustrate what SDA CRS speakers I have below.
Also I have retested the IC sockets with a different DMM for ohms and here is what the readings are.
Left speaker = 4.09 M-ohms
Right speaker 25.19 M-ohms
You should treat those MOhm resistances (millions of ohms) as INF. As the capacitor charges up from the current from the ohmmeter, the value will go up. I tried a 12uF mylar capacitor and it started out at 3 MOhms and rose from there the longer I kept the probes in place.
When you read ohms across the Large Blade and Small Blade sockets you are effectively charging up those two paralleled capacitors shown in the schematic you posted.
Maybe if you discharged the capacitors in both speakers before doing the test they would be closer in value.George / NJ
Polk 7B main speakers, std. mods+ (1979, orig owner)
Martin Logan Dynamo sub w/6ft 14awg Power Cord
Onkyo A-8017 integrated
Logitech Squeezebox Touch Streamer w/EDO applet
iFi nano iDSD DAC
iPurifier3
iDefender w/ iPower PS
Custom Steve Wilson 1m UPOCC Interconnect
iFi Mercury 0.5m OFHC continuous cast copper USB cable
Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
Custom Vibration Isolation Speaker Stands and Sub Platform -
I would be willing to Trade you two 6511's for your 6510's.
I did the same modification, my CRS+ were just like yours Blade/Blade twin MW6510's, rebuilt the crossovers, and all.
Jesse sold me a pair of SW102's, the SW100's would be just fine till you found a pair of 102's.. -
Not sure this matters. But I have passives from CRS+ pin/blade. FREE u pay shipping. PM if needed..
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To me it's pretty clear you have the dual mw6510 CRS+ blade/Blade model. I'd further guess you have dual XO boards.
The CRS+ with the mw6510/mw6511 drivers have a single board XO and Pin/blade socket.
Yes Pittdog.
I actually have the dual crossover boards and what a pain in the **** it is to get the SDA board out. Had to take sister board off in order to access the nut hidden underneath it in order to do the removal
I snapped a few pics I will attach below.
I also took a few of the SDA 2 - CRS+ crossovers that i purchased awhile ago.
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Gardenstater wrote: »Gardenstater wrote: »Gardenstater wrote: »Why so quick to dismiss the socket?
I was able to check the female prongs with a DMM and compare them to the left speaker. The right speaker value in ohms is all over the place and finally reads over limit.
The left speaker reads a consistent ohms value that is stable. I don’t recall the exact value, but the right speaker is inconsistent and finally reads over limit.
You should get INF reading on both speakers according to this from the SDA Handbook:
I don’t have the SDA CRS + crossovers in these units.
I have the SDA CRS crossovers with the two MW 6510 drivers and the single SL 2000 tweeter per cabinet.
I do have the testing chart like the one above for the crossovers
in my units to compare values. I’m not home at the moment but when I return I will take very specific readings and post them here.
Hmm, well the CRS had 2 MW6503 and 2 SL2000 tweeters. That schematic you posted above says it is for the CRS+ and it is for the Blade/Blade version.
I understand, but that's the only schematic that comes close to my SDA CRS speakers that has two MW6510 drivers and one SL2000 tweeter.
Perhaps mine are some iteration of the SDA CRS and CRS+ that is not very well documented in the SDA Handbook.
I'm attaching some pictures to illustrate what SDA CRS speakers I have below.
Also I have retested the IC sockets with a different DMM for ohms and here is what the readings are.
Left speaker = 4.09 M-ohms
Right speaker 25.19 M-ohmsYou should treat those MOhm resistances (millions of ohms) as INF. As the capacitor charges up from the current from the ohmmeter, the value will go up. I tried a 12uF mylar capacitor and it started out at 3 MOhms and rose from there the longer I kept the probes in place.
When you read ohms across the Large Blade and Small Blade sockets you are effectively charging up those two paralleled capacitors shown in the schematic you posted.
Maybe if you discharged the capacitors in both speakers before doing the test they would be closer in value.
I just discharged the speakers by jumping a resistor across the the + and - speaker terminals and placed a paperclip in the IC socket and let it stand for 5 minutes. I rested and came up with almost the same exact results. -
I would be willing to Trade you two 6511's for your 6510's.
I did the same modification, my CRS+ were just like yours Blade/Blade twin MW6510's, rebuilt the crossovers, and all.
Jesse sold me a pair of SW102's, the SW100's would be just fine till you found a pair of 102's..
Hi Toolfan
(By the way I love their newest album "Fear Inoculum"
I would definitely be interested in doing a trade for the pair of MW6511 as long as they test good.
How do you want to work this out?
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I would be willing to Trade you two 6511's for your 6510's.
I did the same modification, my CRS+ were just like yours Blade/Blade twin MW6510's, rebuilt the crossovers, and all.
Jesse sold me a pair of SW102's, the SW100's would be just fine till you found a pair of 102's..
Hi Toolfan
(By the way I love their newest album "Fear Inoculum"
I would definitely be interested in doing a trade for the pair of MW6511 as long as they test good.
How do you want to work this out?
They are good, I will take pictures when I get back home.
Ship me the 6510’s I ship you the 6511’s, simple.😎 I have a few of them..
I have plenty of good feedback on the forum here.. Let alone eBay if needed..
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Legit!
