![]() ![]() The amplifier also comes with brand new set of Tung Sol 7591A output tubes, and should provide many hours of trouble free operation. The now hard-to-find 7199 tubes have been replaced with the more common 6GH8A tubes, using high quality ceramic adapters (the audible difference between the two tube types is negligible). Connec a CC 5 from Pin 2, D5A ( ) to Pin 4, D5A BM8-6. Connect the other end to Pin 5, D5A BM8-5. C nnect a CM 47 from Pin 4, D5A to Pin 2, Connect the black band end of a CPIM. The aging (and now dangerous) selenium rectifier has been replaced with a modern (and much more reliable) silicon rectifier. Connect a 1M resistor (brown, black, green) from Pin 3, D5A (St) to Pin 2, V3. All electrolytic capacitors have been replaced. ![]() All ceramic capacitors have been replaced. A thermistor has been added to drop today’s higher line voltage, so that it is more in line with what was the standard at the time of the original design. All the potentiometers have been cleaned with Deoxit. This particular example has undergone a complete overhaul, and should provide many years of trouble-free service to its next owner.īackground noise is minimal this is a very quiet amplifier (for a tube amp).ĭetails of the service including the following:. The LK-72 is the kit version of the 299C model. This is a nice example of a vintage Scott LK-72 Tube amplifier. #HH SCOTT STEREO MASTER LK 72 B FULL#First is obviously the amp, second is the full view of my second system and third is an old pic of my main set-up.Any thoughts on the build quality and restoration of this Scott integrated amp? and also, how will it pair with my cornwall 1's His concern for making sure you are satisfied is unmatched. He's also the best seller I've ever dealt with buy gear and such. Plus, moving the current McIntosh amp is a two-person job.Īgain, I'd like to offer my thanks to Adam for all his advise and patience. The current speaker wire with the big B&Ws won't hook up to the Scott's terminals. It would be a 3 hour project most likely. Now, before you ask "Sam, hook that Scott up to the big B&Ws", realize I've considered it a dozen times. To put it simply, I'm overwhelming satisfied with my foray into tubes. Helmet is better with the solid state McIntosh My main system does somethings better with a lot of solid state power. Very hi-fi.Īm I gonna go tubes in the 'big' system? I dunno. It does sound like: clean, images like crazy, non-fatiguing, with wonderful decay and lovely mids that "float". Well, this thing absolutely sings! First let me tell you what it does not sound like: warm, tubby, thick, bloated, furry. ![]() ![]() Adam settled my fears and suggested I try the 299C he offered a few months back. Maybe it was just a bad speaker/amp combo, but I was ready to throw in the towel right then. Well, it's not what I was expecting! I previously had another tube amp I bought off audiogon, that did not meet my expectations for sound or vintage gear. This was critical, because my NHTs are only 86dB efficient, so Adam knew we couldn't just throw any old tube amp at 'em. This Scott 299-C is powered by four JJ 7951's. Since my main system is 'maxed-out' in several ways, I thought I could try to improve my second system without dropping a ton of cash. It previously consisted of a Yamaha solid state stereo receiver, NHT SuperOne bookshelf speakers, and a 15-year old Pioneer CD player. I've had a second system based in my office/computer room for a couple of years. Adam's friendly help and patience made this whole adventure (I'll leave out the gory details!) worthwhile when lesser folks woulda thrown in the towel in this vintage audio game. Adam is a tube expert that coached me over several months to put together a tube-based system for my second system. First let me start off by saying that this thread was only made possible by the kind help of forum friend audio/Adam. ![]()
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