http://music-electronics-forum.com/ en Thu, 09 Sep 2010 07:29:53 GMT vBulletin 60 http://music-electronics-forum.com/images/misc/rss.png http://music-electronics-forum.com/ http://music-electronics-forum.com/t21420/ Tue, 07 Sep 2010 18:27:24 GMT I saw an application in which the output of a small audio amp, e.g., amplified computer speakers is further treated with a 8 Ohm/1K Ohm transformer... I saw an application in which the output of a small audio amp, e.g., amplified computer speakers is further treated with a 8 Ohm/1K Ohm transformer on each side to increase the voltage of the output. Is it possible to use any solid state device, e.g. a stereo amp on a chip, e.g. LM386 to replace the transformers? Is there a solid state replacement for a transformer?
Thanks ]]> Other Amps ak08820 http://music-electronics-forum.com/t21420/ http://music-electronics-forum.com/t21411/ Mon, 06 Sep 2010 23:50:19 GMT One of the lead wires going into the power transformer on my AO-47 power/reverb amp broke right where it comes out of the transformer. Is there any... One of the lead wires going into the power transformer on my AO-47 power/reverb amp broke right where it comes out of the transformer. Is there any fixes for this issue or will I be forced to buy a new transformer? If I do have to buy a new power trany, any suggestions?

Thanks,
Jasynte ]]> Other Amps Jasynte00 http://music-electronics-forum.com/t21411/ http://music-electronics-forum.com/t21325/ Tue, 31 Aug 2010 14:43:25 GMT My rca jack is bad and I would like to know how hard it will be to replace. Any help?. Jim New My rca jack is bad and I would like to know how hard it will be to replace. Any help?.
Jim New ]]> Other Amps JimNew http://music-electronics-forum.com/t21325/ http://music-electronics-forum.com/t21283/ Fri, 27 Aug 2010 21:16:20 GMT Hello Everyone, I am working on a friends CS 200X and only channel B is working. I have requested a schematic from Peavey. While I am waiting for... Hello Everyone,
I am working on a friends CS 200X and only channel B is working. I have requested a schematic from Peavey. While I am waiting for it, I thought I would post what I have found to see if anyone has any ideas. Channel A has no DC on output, it is not tripping the circuit breaker, and it is getting power to the board. When I hook up a sig gen and speaker to it and turn it on, I get a pop through the speaker like it is trying to work, but then no sound. When I shut it off, after about 1 second, I can hear the sig gens input fading out through the speaker. I don't think this is an output problem because I can hear some sound when turning it on and off. Its almost like it is going into protection mode or something. The DDT light on the front panel is not lit up. Does anyone have any ideas? Hopefully I will get the schematic today from Peavey so I can see what is what. Any help would be appreciated!! Thanks!! ]]> Other Amps tonecat http://music-electronics-forum.com/t21283/ http://music-electronics-forum.com/t21271/ Fri, 27 Aug 2010 13:45:57 GMT Just in time for 5.1+ type sound to be all the rage, my recent foray into a guitar amp for a friend has reignited my desire for a tube amp for my... Just in time for 5.1+ type sound to be all the rage, my recent foray into a guitar amp for a friend has reignited my desire for a tube amp for my "stereo" (how old fashion does that sound?). I've loved every McIntosh amp I've heard.

But I also figure, schematics alone don't make the McIntosh amp so appealing. Or am I wrong? Is a McIntosh just ("just", ha!) a more carefully laid out and circuited guitar amp? Or am I about to find out why those amps cost in the thousands of dollars, such as the cost of higher grade transformers, more chokes, etc?

What would I be getting myself into that is different or more intense from a guitar amp?

Thanks,
Joe ]]> Other Amps jfutral http://music-electronics-forum.com/t21271/ http://music-electronics-forum.com/t21244/ Tue, 24 Aug 2010 23:45:33 GMT Just got back from Goodwill where I saw an old phono tube amp with huge speaker cabs. Asking $20. After prying it apart I saw huge Iron. The largest... Just got back from Goodwill where I saw an old phono tube amp with huge speaker cabs. Asking $20. After prying it apart I saw huge Iron. The largest tube was 5v5. 6 or more tubes altogether. Very clean condition. The speaker cloth screamed vintage vibe. The cabinets looked like a handyman project with the phono player and hidden amp. I plugged it in and all the filaments lit up but it was'nt connected to the speakers. I don't know about converting phono input into a guitar amp. Is it doable? Anybody know anything about a single 5v5 amp. What kind of power might it produce? The chassis looked manufactured. No names on anything other than a Mallory can. Boy them Irons looked big. Looked like a ton of trouble though. (: ]]> Other Amps twiggybush http://music-electronics-forum.com/t21244/ http://music-electronics-forum.com/t21188/ Fri, 20 Aug 2010 16:46:21 GMT crossover for a 2N7301 & 2N7247 for a Dynaco SCA-80Q? ]]> Other Amps donegone http://music-electronics-forum.com/t21188/