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Old 2nd September 2004, 07:09 PM   #1
darkm4n is offline darkm4n  Romania
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Default Help .. tube amplifier .. 1st !

Hi ,

I really need your help in building my first amplifier ...
I want a 2 x 100 W 8 Ohm Tube amplifier .. or less .. i don't know ...
Please .. please .. help me with the schematic and all the info ... transformers in special ... i need help in makeing them ...
This is my first tube project ...

THANKS !!!!
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Old 2nd September 2004, 07:52 PM   #2
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100 watts... WOW! You must have really inefficient speakers.... or is this for a big Professional installation? My first amp is 4 watts SET, and with 93 dB speakers, I'm pretty happy with it. I can't imagine needing more than 10 or 20 watts!
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Old 2nd September 2004, 09:14 PM   #3
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Meh. I could go for 50-100W. Too bad it'd blow these speakers. -->>>

So yeah, 100W ain't easy, tube or solid state. You might be able to find a kit for like $500 or more but if you're commited to building it yourself, you WILL be starting smaller.

Tim
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Old 2nd September 2004, 09:27 PM   #4
darkm4n is offline darkm4n  Romania
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Default OK

Give an example .. a schematic please
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Old 2nd September 2004, 09:31 PM   #5
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Hi,

Quote:
Give an example .. a schematic please
Only one?

Have a look under KT88, 6550, EL34/6CA7, etc. :

CLAUDIO BONAVOLTA

Cheers,
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Old 2nd September 2004, 09:46 PM   #6
darkm4n is offline darkm4n  Romania
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Default Hmm ...

How i can make my output transformer ?? Wind it myself ...
Hmm .. maybe a simple 10 W design i don't have the knoleage to build a 100 W one ..

A simple and good low power schematic ??

Thanks !
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Old 7th September 2004, 08:08 PM   #7
kmj is offline kmj  Sweden
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here's one for up to 70W depending on setup. but it can be expensive depending on wich parts you use.

http://www3.sympatico.ca/r.godmaire/VDV3070.htm

but as the other guys told you, do you really need 100W???
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Old 7th September 2004, 10:20 PM   #8
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Ah, that's better. You can start with a 6V6 SE or PP amp, such as Revision 3 or Frankenhouse, detailed on my website.

Tim
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Old 8th September 2004, 12:51 AM   #9
arnoldc is offline arnoldc  Philippines
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do you really need 100 watts?

probably, if you're going to drive Magnepan or B&W Nautilus. i have two friends who uses those speakers. the B&W is driven by a 100wpc Jadis and the Magnepan is driven by a 150wpc Audio Research.

another friend has Sonus Faber Electa Amator II and is driven by a Conrad Johnson 75wpc.

then i have this friend who drives his Sonus Faber Guarneri with a 300B
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Old 8th September 2004, 07:45 AM   #10
kmj is offline kmj  Sweden
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try this one. only about 3.5W but accoring to most people that should be enough depending on your speakers. AND it's quite a good manual for a first-timer
(still havn't built my first....waiting on paycheck)

http://www.boozhoundlabs.com/howto/
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