jpc2001

No affiliation. "Speaker Factory." The price is right -- if these are close to the real thing on performance. https://boston.craigslist.org/gbs/ele/6072592674.html

Price drop, $200.

I recently picked up a Sony STR-GX9ES. It drives Fortes very nicely! The sound is so much livelier than with the other amp I was using, I'm thinking that one was running up against its current limts (??) trying to drive the Fortes which are 4 ohms. It's a really neutral, clean sound. Lyrics are particularly easy to understand on this amp.

PS. I'm not interested in shipping, sorry. Too much risk of damage and/or fraud for me.

as you wish

Pioneer SX-850 stereo receiver. Good condition. Pretty face, minor knicks on the cab. I replaced transistors on the protection board, which fixed a problem with the protection relay opening sporadically. Also I changed out the bias pots and the power amps' input transistor pairs, and set the bias. I replaced tantalum coupling caps on the preamp with oversized electrolytics. (Tantalums sound bad.) This one is all running like it should now. It's clean inside, with no evidence of a major repair or rebuild. One of the output transistors is not original but it is a correct replacement. Built to last ten lifetimes. Has two pairs of output transistors per channel, which allows it to supply more current than its 65-wpc-into-8-ohms rating suggests. Asking $250.

I bought this one last night. I will be selling a Pioneer SX-850 or a Rotel RB-970BX to make room for it. The Sony sounds NICE, holy heck it does! It's maybe better than my homebrew amps, to my chagrin. I've built several amps derived from the "Honey Badger" and "Wolverine" designs from diyaudio.com. These are very accurate amps, they simulate at 10ppm of distortion or less. This Sony gives them a real run for their money. I was A/Bing the Sony against the homebrews on a pair of Forte's. These are the first generation Forte's labeled 4 ohms impedance. The Sony sounds super clean and clear, muffled lyrics become easily audible. It's like a lyrics translator. This is the first factory-stock amp I've heard that could maybe beat the homebrews. A Pioneer SA-9500ii doesn't, the SX-850 doesn't, a Sanyo JCX-2600K didn't until it got turned into one of them, and the Rotel RB-970BX doesn't. Admittedly I haven't heard Macs or Krells or any tubes except a '60s Maggotbox console. I'm a cheapskate and fear bankruptcy if I dip my toe in those expensive waters. It's amazing how different two amps can sound, even when they both allegedly make very low distortion. Maybe tone differences are in play, with tone controls not centering perfectly. I sort of suspect the Sony is cheating and overemphasizing the bass a bit. The bass is maybe a little too solid. It would be interesting to measure.

No affil. https://boston.craigslist.org/gbs/ele/5977394053.html 130wpc @ 70ppm THD. Featuring "Spontaneous Twin Drive"!

N/a Don't know JBL well enough to recognize exact models but it looks like real hardware. At least one altec driver visible too. Maybe it's not trash? http://boston.craigslist.org/gbs/ele/5779564844.html

Yep, that's the link. My bad I'd be so tempted. But I have no time to get out that way in the next 2 weeks and they surely won't last.

Some cosmetic blemishes but it looks like an easy redo. N/a

I do repairs in the Boston area, specializing in vintage solid state amps and preamps. I can also modify electronics to reduce noise and distortion in many cases. It can be made to work better than new. Usually I buy broken items and sell working items, but this model has led me to accumulate too much stuff that I don't want to sell. So I'm considering a fee-for-repair-service model. This isn't my real job, it's just a hobby; time scales involved may reflect that.

That's my thinking. I would definitely let the seller name a price first. As the NY lotto ads say: hey, you never know! I'm in Boston, it's far enough from Albany that Google maps directions offers me quotes on flights. Otherwise I'd be in touch with the seller. They look nice.

Classified as furniture on CL: http://albany.craigslist.org/fuo/5671494408.html They may not really know what they have. No affiliation.

needing some repair. N/A. http://boston.craigslist.org/gbs/ele/5642150716.html These must be real nice when fixed up, I've only heard 4.2s which sound lovely.

Sorry, I didn't mean to imply that there's anything wrong with a Speakerlab K. I actually own a pair of homebrew khorn clones, they get daily play time and are not for sale. There's a certain kind of CL ad, describing any moldy old homebrew speaker that happens to have a triangular cross-section as a "Klipschorn". If these are Speakerlabs built under license from Klipsch, this ad would be the mildest example of the form.

pysch What are they really? N/A. Even if those are Speakerlab K's (??) this is still possibly a good deal. http://providence.craigslist.org/ele/5609423993.html

Fascinating theory, and totally believable! If a Klipsch speaker and the amp don't sound right, it's usually the amp making distortion or noise. I like DIY "Wolverine" amps designed by ostripper at diyaudio.com. It's a modern class AB design, making part-per-million THD, you can build one to hit 0.001% THD at any signal level and any audio frequency. The component count is low, you can build it small enough to retrofit it into vintage receivers and integrateds. They sound absolutely transparent on Klipschorns and KG 5.5's.

Yes, when biamping, you might clip only one amplifier. There are two types of clipping. The amp can run out of volts (output driven all the way to the rail) or it can run out of amps (current limiting protection circuit kicks in). My understanding is that current limiting is worse: the amp output goes to high impedance from the speaker's point of view. If a reactive speaker has stored energy and the amp can't accept that energy back, it's gotta go somewhere, the speaker may produce big voltage excursions and big mechanical excursions. Sent from my GT-I9300 using Tapatalk

http://worcester.craigslist.org/ele/4770450932.html They ask $350, plus it has a channel out so you'd have to get that fixed. No affiliation. I'm tempted, it's my back yard and I have brought some dead amps back.

I bought a pair of KM-6s in summer 2013 for $100 in 8/10 condition. Those are the military PX version of the KG 5.5's, they're identical. THAT was a score. I got down there fast! My Khorn clones dig deeper but the KM-6s are very, very nice, detailed and uncolored all through the mids and highs. I don't really have a preference for one pair or the other. They are both special. I recapped the KM-6s with polypropylenes. They needed it, the old electrolytics were 15 or 20% off the nominal values.

My guess is it was legit. Someone wanted to sell it quickly, not list and relist and wait to meet people that don't show.

Degreed electrical engineer, I can fix and tune up amps and preamps. I could estimate repairs for you, or trade working gear for your non-working gear. I have some repaired units for sale: - Onkyo TX-4500 mkII receiver, 65wpc. Clean in and out. I replaced the protection relay and cleaned all pots and switches with DeOxit. It looks factory fresh inside. $100. - Kenwood KR-5030, 65wpc. Coming soon, it's awaiting a relay. This one has the "triac" mod, this is a permanent fix for the unreliable OEM power switch. The front face is quite clean; the inside is clean; the top cover has some corrosion at the rear edge. $90. It's also possible to reduce noise and distortion to better-than-new levels on some older gear, ask about that. Cheers

$150 for the receiver and a turntable. I'm tempted. Buy it before I do. http://worcester.craigslist.org/ele/4690956368.html

I'm one of those kids that only listens to digital sources, the exception being terrestrial radio. That's always been the case, even before really getting into music, even before really getting into the audio hobby. I'm 34.