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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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I have a Yamaha amplifier (SS of course), around 1980, in a very impressive cabinet... and that's the only good point of it. It sounds like a 14" TV (I mean it: a 21" TV sounds much better!). Transformer and heatsink seem like borrowed from a clock radio. Amp schematic is: Single NPN differential - Driver - 2-stage Complementary bipolar follower.I need to convert it into something decent for a kitchen system, 15Wpc will do. Here are three paths:
- all-new simple SS power amp, 50Wpc something, with input switch/volume. Even this will require new transformer, heatsinks, etc.
- a small EL84 or 6V6 power amp, add OPTs to the bill. Anything larger than EL84 or 6V6 won't fit into cabinet profile and I'm afraid can melt it too.
- Retain original PCB, power transistors and heatsinks as is. Replace-upgrade all power supply, remove tone controls and preamp, and tweak the existing amp schematic until ... until what?
Costs and time are an issue. I have suitable power transformers for both SS and tube options, a few chokes, tubes, sockets, most of the small parts necessary, test instruments. Which leaves out: OPT or power transformers, PS capacitors.
Which way would you go? I know many folks hate the very word 'transistor' but it's for background only, and setup time is important.
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Topic - Fate of a mid-fi amp - What a nice cabinet ... - klaus 04:32:36 06/28/01 (14)
- How about "gainclone"ing it?.... (NT) - Thorsten 08:29:53 06/28/01 (10)
- seconded! - chiggy 09:27:20 06/28/01 (9)
- cfrasers page..... - McCracken 09:49:32 06/28/01 (8)
- here ya go - chiggy 10:00:32 06/28/01 (7)
- There is also a sort of Gainclone discussion Board.... - Thorsten 10:09:16 06/28/01 (6)
- Thanks for the links!_(nt) - McCracken 13:18:31 06/28/01 (0)
- very cool T. thanks! nt - chiggy 11:52:51 06/28/01 (0)
- While we are at it here a possible "Phonoclone"..... - Thorsten 11:51:51 06/28/01 (3)
- Re: While we are at it here a possible "Phonoclone"..... - chiggy 13:38:29 06/28/01 (2)
- Re: While we are at it here a possible "Phonoclone"..... - Thorsten 05:32:26 06/29/01 (1)
- thanks! - chiggy 09:55:15 06/29/01 (0)
- Re: Fate of a mid-fi amp - What a nice cabinet ... - GFIANDY 07:13:10 06/28/01 (0)
- Re: Fate of a mid-fi amp - What a nice cabinet ... - Benoit 06:31:35 06/28/01 (1)
- 2 ways - E 10:08:56 06/28/01 (0)
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