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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Modern Tube Amps - Reliable? posted by larrymach@hotmail.com on February 2, 2006 at 09:21:56:
You could choose an amp with cathode biasing but then you would have to match tubes if it's push pull. The best bet is SET (single ended triode operating class A) with high efficient speakers (>96db/watt/meter). I've been listening to tube amps now for 40 years with very little trouble but then I have all the test equipment necessary to bias them and test the tubes. It's really not very difficult. It's cetainly not rocket science. All you need is a good pro grade VOM like a Wavetek meterman (they even make one now that measures capacitance and inductance)and a transconductance tube tester like the weston 981III. I'd never go back to a solid state amp for mids and highs. I own eight mono block solid state amps all driving woofers. I wouldn't send anything much higher than 500hz to a sand amp. Many solid state amp don't have much uncompensated open loop bandwidth pass that. But then I'd like anyone to show me any solid state amp that will operate open loop with any compensation. The output devices in most solid state amps are not matched well and they are slow as molasses in January especially with opamp topology feedback, brute force backdoor filters, brute force input filters and all the lead and lag compensation just to make transistors stable and not oscillate. Power mosfets still have too much interelectrode capacitance. They have good damping factor for good bass. That's about all I can say good for them. Yes, tube amps are some times a pain that you have to bias up about every 5000 hours but they pay back in enjoyment. Just my two cents! Ray
"I take you as you are
And make of you what I will,
Skunk-bear, carcajou, bloodthirsty
Non-survivor.
Lord, let me die but not die out." THE LAST WOLVERINE by James Dickey
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Follow Ups
- Depends... - grhughes 10:27:59 02/02/06 (0)
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