markw Posted February 24, 2003 Share Posted February 24, 2003 Does anybody know about these amps? I just got it off E-bay Stromberg - Carlson Tube Amplifier 1958-1959 Stereo or Monaural tube amplifier Model #ASR-333 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=14973&item=3008713458&rd=1 Quote Link to comment Share on other sites More sharing options...
jt1stcav Posted February 24, 2003 Share Posted February 24, 2003 I did not know Stromberg-Carlson built hi-fi equipment as well...I knew of the company for building beautiful vacuum tube AM radios from the late 20's to the 50's. Learn somethin' new everyday! Quote Link to comment Share on other sites More sharing options...
NOSValves Posted February 24, 2003 Share Posted February 24, 2003 Oh yea I bet you just scored !! I bought one a few weeks ago for $95 and I'm still astounded by the sound it produced for such a small investment. In fact I'm selling my HF-81 and putting this little baby in its place in my Living room. Mine is not the exact model as yours but I bet there similar. Mine uses 7189 outputs so it has a little more headroom then what you bought. But for $57 how could you possibly go wrong !! I'm going to completely rebuild mine to rid it of the noises and stale parts but it sounds pretty good as it is. Here's the one I bought http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=3280&item=3003853446&rd=1 Quote Link to comment Share on other sites More sharing options...
markw Posted February 24, 2003 Author Share Posted February 24, 2003 That's cool! I'll bet you'll be very happy. Get this --- The seller lives less than 2 miles from my work. I just picked it up. This guy's dad is an audio nut and electronics repairman. I saw NOS tubes EVERYWHERE (Of course, none that I needed) He had a set of "High - Fidelity" S-C monoblocks he just sold. On top of all this... he may have some old K-horns for sale (he's not sure what kind of speakers they were but "they were a funny shape and had horns". He's calling me tomorrow... About this amp. It's integrated preamp/amp I was told that 3 of the tubes tested at just under 100% and the fourth at around 80%.....what does that mean? I just popped the hood... I can put 6BQ5's in the output or EL84 Right now it has 8BQ5(RCA) and 6BQ5(japan) on channel A and EL8?(unknown) and a 6BQ5(RCA) on channel B Will any of this matter? The pre amp section uses 6AV6 (2) and 6U8 (2) 1 per channel It has bass/treble/gain separate for each channel, master loudness, Phono AB and BA, Tuner and Aux selections, and can bet set to run stereo or mono. Looks like it can support 4/8/16 ohm speakers. Also there are 2 hum adjustment reostats you set w/a screwdriver (forgot the tech term) Now I just wish I could go home and enjoy it. Oh well back to the grindstone. I'll post after I give it a good listen. I'll also be asking if there are any quick mods I can make to help. BTW How long should I let it warm up? Quote Link to comment Share on other sites More sharing options...
NOSValves Posted February 24, 2003 Share Posted February 24, 2003 Well let me know I have nice matched quads of EL84/6BQ5s for $28 a set. NOS russian miliary from the 70's. I think you should get those mix matched tubes out of there for sure since it has no bias adjustment. It only has 8 total tubes ?? Must be SS rectified Oh and EL84 and 6BQ5 are the same tube one is US name (6BQ5) and one is the Euro name (EL84) Craig Quote Link to comment Share on other sites More sharing options...
dougdrake Posted February 25, 2003 Share Posted February 25, 2003 FWIW, Stromberg-Carlson also made telephone switching equipment used by the phone companies in their switching offices. It was mechanical, and responded to the pulses from your rotary phone to "step" up and down a frame, one step per pulse (9 steps for the number 9). You can only imagine the racket in that place!! Ahh, the peace of solid state and the Electronic Switching System was a welcome replacement. DD Quote Link to comment Share on other sites More sharing options...
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