Receivers / Amps that use 6L6 tubes?

There's an old Scott receiver with tubes that I *Believe* uses 6L6's, but I've got to take it apart and look underneath the tube sleeves. Most units I've junked for parts use 12AU7 or 12AX7.

Gary, how crafty are you with a soldering iron? There are TONS of great tube schems using 6L6s, and they're fairly simple. Truthfully, DIY might be the only cheap solution.

http://www.pmillett.addr.com/push-pull_kt88_class_a_amp_with_universal_driver_pcb.htm

As it stands, most 2 channel amps at ALL, sold used (eBay) on the cheap, are tube units that need work. Trying to find a decent SS around 80w, monoblock or stereo, is higher priced.

 

The EICO HF-22 uses 6l6 output tubes. Don't know how the sound compares to what you already have though.

http://users.rcn.com/fiddler.interport/eico.htm

That page Sckott posted really interests me because its says you can use 2A3's and 300B triode's, but here's another page with a schematic that doesn't use an input transformer to do the phase splitting:

http://www.geocities.com/MyDesign_99/Pp6l6eng.htm


It's only 17.5 watts but its all Class A.

 

Hey Gary,

Why not use the 240 only for a 2 channel rig and score a new cheapo A/V receiver for your surround endeavors?

-Jeffrey

 

Hi,

Geez.... there is just no changin' a tube head. Once a tube head, always a tube head.

-Jeffrey

 

Just picked up, as junk, a Sherwood S-8000-III tube receiver with 7868 power tubes. Bad caps, the tubes might be bad too... Going to Mouser today to pick up a couple of 120mfd-250vdc caps. The fuse was missing from the unit, and upon replacing it, I figured out why.... bad power supply caps...

Here's a picture of the Mk IV, it's twin. Looks very much the same. Notice the plywood cover, as normal on many older Scotts.......

Got it from a client who've I built PCs for long ago. He saw this at the junkyard looking fairly "perfect".

A little Murphy's oil soap, and it looks like new.

The trick is, the 7868 tubes are a pain in the ass to get a hold of, unless you're lucky or have $100+ burning a hole in your pocket.

S/B 35wpc. I'll keep you all informed. Might be a nice museum piece!

 

They're 7868's, and I need a clean quad. The side-getters gave the sides of the tubes halo-burns. Might be normal, since they're GE OEM originals (as is most every tube in the unit, and there are MANY) but the power tubes in the rear end are suspicious. I'll bet my 4 X 7868's are bad....

The cap, I have in my hand, looks like it spewed mashed potatoes. Yep! No capacity on the oHm check! Dead!

7868's aren't always easy tubes. I'd use equivs if I could, but they won't fit without glasstouchingglass

 

Thanks Steve. We'll see, eh?

I'll throw some pictures up, because the wiring in this beast is a little on the frightening side. Truthfully though, there's some high quality caps in the unit. It doesn't look like a bogus 1958 Bogen, it looks like some serious engineering work went into it.

I'm impressed with the condition, as both electronically and asthetically, it's looks like it's in wonderful shape. I have to wait for the caps to come in, and then see if I've got bad tubes. Hopefully, at least one channel will work so I have a prime example before I start thinking of spending a lot of money into it.

Not bad! Heck...it was a wonderful gesture from a guy who didn't owe me nothin'. The transformers make it VERY heavy, so I concider that in his gesture.

So, he's on my Cristmas Card list

 

Geez Gary..... your spoze to put the tube in the socket NOT your head!

-Jeffrey