JohnA

My Heresy IVs are not bright at all in my room. They even tend to be dark. I contend they do not *need* a subwoofer as only the low E and F of the bass is down from the rest, but not so much that you would think it was a deficiency instead of being recorded that way. You will miss the lowest notes of of a 5-string, but those are rare outside Jazz. I recommend you look at any of the Reference Premier Subs.

Hey Gil! Good to see you posting again. Musta worked out the computer issues. Do you like tablets? Sometimes they are easier, but typing is slower, one or 2 fingers. But I love the pinch/zoom.

I had that amp and, I think, a KT-5300 tuner in college. It was a nice piece of kit.

Use a high quality Film and foil cap. Some of the best are made with copper foil. I am partial to the long out of production Hovland Musicaps.

Connect them to a source like a preamp or disc player. If they still buzz, return them.

"K" means 1972. We would have to see the label on the back or the insides to say more. "WO" means Walnut Oil and "12" means a 12-inch woofer, but almost all Heresy have that. They may well have all AlNiCo drivers. Some people think that makes them sound better. Take 'em home wipe them off with a a barely damp cloth and later rub them down with a little lemon oil and enjoy! You amp should produce between 10 and 75 watts, RMS. They won't need much.

The woofer is not AlNiCo, but is likely original. Unless they sound recessed, polite, or dull and all the drivers work they need no restoration. You might rub a little lemon oil on the veneer.

Until just now, the were using the pre 1980 version of the K-55-V.

Nope. Crites is reselling John Allen's A-55G. Mr. Allen spent a small fortune improving, slightly, the 2-piece phase plug PD-5VH. Apparently, Mr. Allen did sell his T-35 to Klipsch as a K-77-F.

Yes, Mr. Allen is a friend to Klipsch and each has helped the other. I met THE John Allen at a pilgrimage. Nice bloke, indeed.

There is no such thing as "underpowering" speakers. Once the sound quality and distortion of the amp is good enough, it is only a matter of, "Is it loud enough?" If you can achieve the loudness of the live music you like (say 105 dB for an orchestra), you're good.

There will probably be a driver or software setting that will make it so. I doubt every/any digital stream running through the computer is supplied to any usb port all the time.

Call Cory at Paducah Home Theater. Something of a drive from CAT country, but doable.

OK, the best I can find about the Pyle LW1540 looks like they would make a horn woofer. That should not be a surprise to you who knew Gil built speakers. Brand Model X Vas Qts Fs Sens Pmax Xmax Production MMS Qes Pyle LW1540 41 306.4 0.6516 29 92 150 7.6 Discontinued .10084 .7 0

Every pro audio shop can get and install one.