Help .. tube amplifier .. 1st !

darkm4n · 2nd September 2004, 06:09 PM

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 !!!!

Kent Smith · 2nd September 2004, 06:52 PM

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!

Sch3mat1c · 2nd September 2004, 08:14 PM

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

darkm4n · 2nd September 2004, 08:27 PM

Give an example .. a schematic please

fdegrove · 2nd September 2004, 08:31 PM

Hi,

Quote:

Give an example .. a schematic please

Only one?

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

CLAUDIO BONAVOLTA

Cheers,

darkm4n · 2nd September 2004, 08:46 PM

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 !

kmj · 7th September 2004, 07:08 PM

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???

Sch3mat1c · 7th September 2004, 09:20 PM

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

arnoldc · 7th September 2004, 11:51 PM

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

kmj · 8th September 2004, 06:45 AM

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/

2nd September 2004, 06:09 PM	#1
darkm4n diyAudio Member Join Date: Aug 2003 Location: Bucharest	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 !!!!

2nd September 2004, 08:14 PM	#3
Sch3mat1c diyAudio Member Join Date: Jan 2003 Location: Milwaukee, WI	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 __________________ Seven Transistor Labs Projects and Resources

2nd September 2004, 08:27 PM	#4
darkm4n diyAudio Member Join Date: Aug 2003 Location: Bucharest	OK Give an example .. a schematic please

2nd September 2004, 08:46 PM	#6
darkm4n diyAudio Member Join Date: Aug 2003 Location: Bucharest	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 !

7th September 2004, 09:20 PM	#8
Sch3mat1c diyAudio Member Join Date: Jan 2003 Location: Milwaukee, WI	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 __________________ Seven Transistor Labs Projects and Resources


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2nd September 2004, 06:52 PM	#2
Kent Smith diyAudio Member Join Date: Jun 2004 Location: Wylie, Texas	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!

7th September 2004, 07:08 PM	#7
kmj diyAudio Member Join Date: Feb 2004 Location: Falkenberg	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???

7th September 2004, 11:51 PM	#9
arnoldc diyAudio Member Join Date: Apr 2003 Location: Makati	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

8th September 2004, 06:45 AM	#10
kmj diyAudio Member Join Date: Feb 2004 Location: Falkenberg	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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