What is That?
PolkieMan
Posts: 2,446
I opened up my left 2.3 tl last night to put in the new crossover and their is a plastic ring just lying in the bottom. Boy talk about poor quality control there speakers were not cheap it's like planting a bush in your yard and digging up beer bottles:rolleyes:
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
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
Post edited by PolkieMan on
Comments
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Are you really b!tching about a gasket laying in the bottom of a cabinet? Or just kidding? I would hardly call that poor quality control. Now if you opened that cab and found Jimmy Hoffa's bones. Then I might have to agree with you.--Gary--
Onkyo Integra M504, Bottlehead Foreplay III, Denon SACD, Thiel CS2.3, NHT VT-2, VT-3 and Evolution T6, Infinity RSIIIa, SDA1C and a few dozen other speakers around the house I change in and out. -
I'll see your gasket and raise you one. When my 1.2s arrived in 1988, I noticed there was zero DA output only on the right speaker. Found one of the series inductors on the XO had vibrated in shipment and the wire came unsoldered on the XO board. Also discovered the speaker input terminal polarity was mis-labeled on both speakers so no working SDA effect for 20 years.
What's 20 years without the SDA worth? Priceless!
Greg'65 427 Shelby Cobra
'72 Triumph TR-6
__________________
'88 Polk SDA SRS 1.2, with upgraded XO caps and Erse SDA inductors
'86 Polk SDA CRS+
'84 Polk Monitor 10A (Peerless tweeters)
'05 HSU VTF-3 Sub (Original OEM)
'20 HSU VTF-3 Sub (three more, 100% cloned)
'93 Carver TFM-35
'88 Carver M-1.0t
'88 Adcom GFT-555
'88 Adcom GFP-555
'88 Adcom GFA-555 (upgraded/restored)
'88 Adcom GFA-555 (a second one upgraded/restored)
'05 Onkyo DV-555 media
'89 Fosgate 360 Digital Space Matrix
'89 Fosgate 360 Digital Space Matrix, internal surround amp bridged to drive only a center channel
'91 Kenwood Basic M1D Amp
'89 Pioneer Laser Disc media
'89 Sony SuperBeta HiFi media
One PGA2310 based custom built remote volume control
Four Polk T-15's
Four Polk TSi-200's
Four Polk TSi-100's
Two Polk CS-10's -
I'm surprised you didn't run the suggested tests to determine if the SDA's were working when you bought them in '88, but I guess that might be a bit of hindsight talking. Thats sucks for 20 years. How did you finally figure it out Oldman?
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I opened up my left 2.3 tl last night to put in the new crossover and their is a plastic ring just lying in the bottom. Boy talk about poor quality control there speakers were not cheap it's like planting a bush in your yard and digging up beer bottles:rolleyes:
PM, did you buy them new?"Science is suppose to explain observations not dismiss them as impossible" - Norm on AA; 2.3TL's w/sonicaps/mills/jantzen inductors, Gimpod's boards, Lg Solen SDA inductors, RD-0198's, MW's dynamatted, Armaflex speaker gaskets, H-nuts, brass spikes, Cardas CCGR BP's, upgraded IC Cable, Black Hole Damping Sheet strips, interior of cabinets sealed with Loctite Power Grab, AI-1 interface with 1000VA A-L transformer -
That's not a gasket. It's most likely a piece of dampening material that was glued to the back of the basket of the passive radiator.“The two most important days in your life are the day you are born and the day you find out why.” ~ Mark Twain
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I'm surprised you didn't run the suggested tests to determine if the SDA's were working when you bought them in '88, but I guess that might be a bit of hindsight talking. Thats sucks for 20 years. How did you finally figure it out Oldman?
I listened to a set of original SRS's in 1987 and ordered my set in 1988. They were drop shipped to my home via truck as 1.2's. I noticed they did not sound as wide as in the store but I had them in small rooms in several homes over the years. I just grew used to the sound and they sounded great for non SDA speakers but in hindsight lacked some of the lower midrange and spatial nuances.
A few years ago I was rewiring for HT, and I set them up accidentally reversing the speaker wire polarity at both speakers and the SDA came alive for the first time. I was blown away. I opened them up and traced the wiring and sure enough, the internal wires to the connection plate did not match the markings or the red/black post on the rear.
Keep in mind in 1988 there was no Internet and no forum. In the '90's the 1.2's and I lived in Saudi, again no Internet there. About the time I discovered the mis-marked terminals I also discovered this forum and someone had recently posted about this problem.
BTW, I wrote Mathew Polk in 1988 about the broken inductor wire on the XO and he was very kind to send a spare SL2000, a one each of the MW's, one PR, and one front grill - for FREE. This was in response to my pending assignment to Arabia where I feared something would get damaged in shipment and customs.'65 427 Shelby Cobra
'72 Triumph TR-6
__________________
'88 Polk SDA SRS 1.2, with upgraded XO caps and Erse SDA inductors
'86 Polk SDA CRS+
'84 Polk Monitor 10A (Peerless tweeters)
'05 HSU VTF-3 Sub (Original OEM)
'20 HSU VTF-3 Sub (three more, 100% cloned)
'93 Carver TFM-35
'88 Carver M-1.0t
'88 Adcom GFT-555
'88 Adcom GFP-555
'88 Adcom GFA-555 (upgraded/restored)
'88 Adcom GFA-555 (a second one upgraded/restored)
'05 Onkyo DV-555 media
'89 Fosgate 360 Digital Space Matrix
'89 Fosgate 360 Digital Space Matrix, internal surround amp bridged to drive only a center channel
'91 Kenwood Basic M1D Amp
'89 Pioneer Laser Disc media
'89 Sony SuperBeta HiFi media
One PGA2310 based custom built remote volume control
Four Polk T-15's
Four Polk TSi-200's
Four Polk TSi-100's
Two Polk CS-10's -
I too had listened to them for a time as I inherited from my girlfriend. I didn't even know about the interconnect cable at first and thought the speakers sounded pretty good as they were. Then I blew 3 of the SDA drivers because I didn't have a common ground amp.(guess I should have read the back of the speakers). I agree this site has been very helpful in trying to put things together, lots of great info.
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Yep that's what it is.
It wasn't stuck on good and fell off.
You could see where only about 20% was stuck down good because of discoloration of the glue.
A kinda poor man's Dynamat.
And this one must have been assembled on a Friday as one of the four nylon standoffs for the big inductor was not in the circuit board hole but was just bent over.
The 0.3 inductor looks like the wires were touching.
I guess I should have opened them before now (22 yrs) but I had thought that paying that much for them $2750 new that hey they were QA'ed good. The only reason I did open them was to upgrade the Xover. Per OldmanSRS I may reopen and check everything once over now.That's not a gasket. It's most likely a piece of dampening material that was glued to the back of the basket of the passive radiator.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 -
When I bought this house new I found a box in the attic for the dining room light fixture so not liking the fixture I was going to use the box to store it, till I opened it ....seems they did not know how to #2 in the bathroom....they like using boxes. So I carried it down to the home builder put it on his desk and showed him, and he said it's hard to get good people these days :eek:Are you really b!tching about a gasket laying in the bottom of a cabinet? Or just kidding? I would hardly call that poor quality control. Now if you opened that cab and found Jimmy Hoffa's bones. Then I might have to agree with you.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 -
dang!
"Attic ****
(n) - A **** that has been brewing in the body for more than 5 days. These types of **** are so rank, they can result in the closing of a bathroom for days.
Phil: Jesus man, did you see that HAZMAT crew in the neighborhood?
Steve: Yeah, we had to call them in to take care of that attic **** Michelle dropped this morning."--Gary--
Onkyo Integra M504, Bottlehead Foreplay III, Denon SACD, Thiel CS2.3, NHT VT-2, VT-3 and Evolution T6, Infinity RSIIIa, SDA1C and a few dozen other speakers around the house I change in and out.