Vintage Monitor and SDA Speaker Deals
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Only 2 posts and trying to get more then the going rate on those.
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2.3's for sale nearby... thinking about jumping in, but he's done a bunch of things to the cabinets that I'm feeling a little leery about. He added 3/4" MDF to the interior sides and baffle, then added more bracing, then lined it with what looks like Noico... all reducing internal volume... Drivers are Dynamatted as well. Terminal cups and interconnect have been modified. Crossovers are stock.
Thoughts?




Current Collection: Monitor 4a (Peerless), Modified Monitor 7b (Peerless), RTA15TL (SL3000), Full mod SDA CRS 4.1TL (198’s), SDA SRS 2.3TL (198’s), R100's, R200’s, R300 🤩 -
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That's pretty out there. For one thing, it seems like the extra 3/4" of MDF on the inside of the baffle would substantially occlude the basket frame windows on the MWs. For a passive radiator system that could have negative effects, not to mention the internal volume being reduced significantly. I sure wouldn't pay that much, at least not without some serious listening tests.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 -
From the Valley of the Sun, no affiliation. https://phoenix.craigslist.org/cph/ele/d/phoenix-polk-audio-sda-srs-12tl-23tl/7321646404.html

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What the what!?!
If this is the new going rate, I’m sitting on a goldmine!
https://www.ebay.com/itm/Vintage-Polk-Monitor-5-Stereo-Speakers-/174765582145?_trksid=p2349624.m46890.l49286
Current Collection: Monitor 4a (Peerless), Modified Monitor 7b (Peerless), RTA15TL (SL3000), Full mod SDA CRS 4.1TL (198’s), SDA SRS 2.3TL (198’s), R100's, R200’s, R300 🤩 -
They may not be going for that price but the way things are these days they should be. Lots of bang for the buck these early Polks !
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LS90's with upgraded drivers for $350, no affiliation.

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Forgot pic for ^

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2.3TL's in SoCal for $750, no affiliation. https://losangeles.craigslist.org/ant/ele/d/palmdale-polk-audio-speakers/7323490554.html

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All the deals are on the left coast....HT/2Channel: Emotiva MMC-1, Adcom GFA-555II, Polk SDA 3.1's, Teac TN-300 TT, Polk Center and Sub.
Bedroom system: Carver CT-24, Parasound HCA-800II, Monitor 10's
Additional projects: RTA 12c's -
I know. Around here, Phenix City about an hour and a half from Atlanta SDA's are hard to find without them being way high in price.
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Pair of decent 11T's near Colorado Springs for $175.
https://cosprings.craigslist.org/ele/d/peyton-vintage-polk-audio-speakers/7325106424.html
KEF Xq5s / Velodyne DD12 / Apollon Purifi 1ET6525SA / SST Thoebe II / Bluesound Node 130 / Oppo BDP-105D / Technics SP-15 w/SAEC WE-308SX & Ortofon AS-309 arms / Audio-Technica ART-1 & Dynavector XX2 Mk II carts -
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Something for folks in the Southeast....upgraded tweets and crossover.
Polk Audio SDA SRS 2 Stereo Speakers - $1,200 (Boca Raton)
https://miami.craigslist.org/mdc/ele/d/boca-raton-polk-audio-sda-srs-stereo/7323471790.html
KEF Xq5s / Velodyne DD12 / Apollon Purifi 1ET6525SA / SST Thoebe II / Bluesound Node 130 / Oppo BDP-105D / Technics SP-15 w/SAEC WE-308SX & Ortofon AS-309 arms / Audio-Technica ART-1 & Dynavector XX2 Mk II carts -
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Good lord..
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I'm pretty sure those are just 2.3's. The photo I'm posting shows the SDA SRS 2's. The ones for sale
don't look like they are altered SDA SRS 2's. The ones for sale are P/B. The SRS SDA 2's did come in both P/B and B/B. They're missing jumper cables on the binding posts. I have the 2.3's (non TL's) I'll have to look at my model labels, they may just say SDA SRS 2 also.
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https://omaha.craigslist.org/ele/d/omaha-polk-audio-speakers/7329781099.html
No Affil.
First time I've seen the fairly rare LF-14 bass module in my area.
With older 5 Jr's with fuses and SL-1000 tweeter.
For only $500.00.
Me thinks I'll pass at this price. Would like the LF-14's for my collection though.



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aprazer402 wrote: »https://omaha.craigslist.org/ele/d/omaha-polk-audio-speakers/7329781099.html
No Affil.
First time I've seen the fairly rare LF-14 bass module in my area.
With older 5 Jr's with fuses and SL-1000 tweeter.
For only $500.00.
Me thinks I'll pass at this price. Would like the LF-14's for my collection though.



That is a killer sub. Will go very low. Even for HT use. Very hard to find. Someone please jump on that. -
Monitor 10 series 2 for $150 at Danville, CA
https://www.facebook.com/marketplace/item/845742476032585/
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Sure looks like a bastardized SRS2 to me (I have those) ... those added mid woofers look awfully strange, and a third SL2000 under the two where they are normally.aprazer402 wrote: »I'm pretty sure those are just 2.3's. The photo I'm posting shows the SDA SRS 2's. The ones for sale
don't look like they are altered SDA SRS 2's. The ones for sale are P/B. The SRS SDA 2's did come in both P/B and B/B. They're missing jumper cables on the binding posts. I have the 2.3's (non TL's) I'll have to look at my model labels, they may just say SDA SRS 2 also.
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They’re 1st Gen 2.3’s

2-channel Yaqin B2-T Pre, Emotiva XPA-2 Gen 2, Marantz SA8005, Pro-Ject RPM-10 Turntable, Denon DP-59L Pro-Ject Phono Box DS3B, Polk Audio Legend L800's, AudioQuest Cable throughout. -
I did find that in Gimpod’s ID compilation ... indeed proper designation is SDA SRS 2.3 (w/ 3@SL2000’s ... the TL uses 3@SL3000) and those two add’l drivers are MW6513 ‘sub-bass drivers’ ... learn something new everyday ... I’m good for the rest of the day now 😁
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Vintage Polk Sets in Salem, OR - Someone Here?
https://salem.craigslist.org/emd/d/salem-polk-audio-speakers/7339346168.htmlExpect that there will be bumps in the road. Choose to not let them rattle you.
Polk - Monitor 10As, SDA 2Bs, LSi9s, White RTi4s, S4s, M3s, various centers.
Boston - CR7, CR6s, CR4s.
Subs - M&K V4, M&K VX-7B, JBL SUB150P, Jamo Sub 250, and others.
Thompson Adventures, Inc. -
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RTA-15TL for $550 in Nashville:

https://www.facebook.com/marketplace/item/893321631518393?ref=search&referral_code=marketplace_search&referral_story_type=post&tracking=browse_serp:f6293e18-cac6-49e4-97c4-ee2ab0381543
Sounds a little steep to me, but might depend on how bad someone wants them."This may not matter to you, but it does to me for various reasons, many of them illogical or irrational, but the vinyl hobby is not really logical or rational..." - member on Vinyl Engine
"Sometimes I do what I want to do. The rest of the time, I do what I have to." - Cicero, in Gladiator
Regarding collectibles: "It's not who gets it. It's who gets stuck with it." - Jimmy Fallon -
Monitor 10 (Series II ?) in Philadelphia, PA. $200 mint condition with factory stands. Facebook Marketplace. Didn't check Craigslist. May be posted there too.
https://www.facebook.com/marketplace/item/428223558375619/?ref=search&referral_code=marketplace_search&referral_story_type=post&tracking=browse_serp:3750d945-0e6e-43fa-a89d-03034ed78e6c
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 -
SDA CRS with orig. interconnect cable, Milford CT, $270
https://www.facebook.com/marketplace/item/358595462291653/?ref=search&referral_code=marketplace_search&referral_story_type=post&tracking=browse_serp:3750d945-0e6e-43fa-a89d-03034ed78e6c
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










