tube amp schematic

[Sampei]

I found a sylavania 6AQ5A tube and i want to build a tube guitar amp
with this electronic tube.Anyone has a link or a schematic?
Thanks in advance

 

[Don Lancaster]

Sampei wrote:

I found a sylavania 6AQ5A tube and i want to build a tube guitar amp
with this electronic tube.Anyone has a link or a schematic?
Thanks in advance

Use any old DSP and a 6AQ5A distortion algorithm.

--
Many thanks,

Don Lancaster
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
voice: (928)428-4073 email: don@tinaja.com

Please visit my GURU's LAIR web site at http://www.tinaja.com

 

[Pooh Bear]

Sampei wrote:

I found a sylavania 6AQ5A tube and i want to build a tube guitar amp
with this electronic tube.Anyone has a link or a schematic?
Thanks in advance

Does the 6AQ5A have ' magic sound ' ?

Graham

 

[Rich Grise]

On Sat, 21 May 2005 15:50:29 +0000, Sampei wrote:

I found a sylavania 6AQ5A tube and i want to build a tube guitar amp
with this electronic tube.Anyone has a link or a schematic?
Thanks in advance

An amp? With _one_ _6AQ5A_?

Might as well plug high-impedance phones right into the guitar jack.

Good Luck!
Rich

 

[DaveM]

"Sampei" <diego.logrillo@tin.it> wrote in message
news:9NIje.925735$b5.40516388@news3.tin.it...

I found a sylavania 6AQ5A tube and i want to build a tube guitar amp with
this electronic tube.Anyone has a link or a schematic?
Thanks in advance

Here are a few web sites that should get you going.. More info than you can
consume in a day, for sure.
Knock yerself out!!!

http://www.schematicheaven.com/
http://russ.valve.amps.20m.com/
http://blueguitar.org/
http://www.diyguitaramp.com/
http://schforfree.seedhost.com/archive/?path=Audio%2FMusical%2FCircuits
http://keelynet.com/sources/schema1.htm
http://members.aol.com/sbench101
http://www.the-planet.org/links.html
http://www.triodeel.com/tlinks.htm#guitaramp
http://members.aol.com/ecc81/links.html


If none of those sites give you what you want, just Google for "guitar amp
schematics" and see how many you come up with.

--
Dave M
MasonDG44 at comcast dot net (Just subsitute the appropriate characters in
the address)

Never take a laxative and a sleeping pill at the same time!!

 

[Joerg]

Hello Don,

Use any old DSP and a 6AQ5A distortion algorithm.

Can also be done with a CD4007. But then again, a 6AQ5 gloweth so
nicely. A DSP lacks that retro feel.

Regards, Joerg

http://www.analogconsultants.com

 

[Joerg]

Hello Sampei,

If you can't find much on the web there are still several options:

a. Obtain a really old ARRL Handbook, at least 30 years old. Lots of
tube amp schematics in those.

b. Look at the schematics of the Drake TR-4 ham radio transceiver. It
used to be very widespread in the 70's and used a 6AQ5 for the receiver
audio.

c. I believe the Gibson Skylark tube guitar amps also used it.

d. If you find a large public library somewhere that doesn't throw out
older books they might have something, too. Probably only in big cities.

Regards, Joerg

http://www.analogconsultants.com

 

[Bob Eldred]

"Sampei" <diego.logrillo@tin.it> wrote in message
news:9NIje.925735$b5.40516388@news3.tin.it...

I found a sylavania 6AQ5A tube and i want to build a tube guitar amp
with this electronic tube.Anyone has a link or a schematic?
Thanks in advance

A single 6AQ5 is not a suitible choice for a guitar amp. Two 6AQ5's in push
pull can be used to make a class AB1 amp of about 10 Watts power output.
This is quite feeble for a guitar amp. Of course you will need an
appropriate output transformer and a power supply giving 250 Volts at 70mA.
Furthermore you'll have to get the tubes and parts for the front end and
phase splitter, 12AX7 and 12AU7 or something similar.

If you are serious about it, consider two EL34' tubes for the output stage
and don't screw around with 6AQ5's. The amount of work is nearly the same
and when you are through you'll have a much better amp.
Bob

 

[Joerg]

Hello Bob,

If you are serious about it, consider two EL34' tubes for the output stage
and don't screw around with 6AQ5's. The amount of work is nearly the same
and when you are through you'll have a much better amp.

Or if you are really serious about it, take even bigger tubes. One amp I
built had an array of PL519, probably the equivalents to the 6KD6. That
amp produces a lot of oomph. One twang on the guitar and the rafters shook.

Regards, Joerg

http://www.analogconsultants.com

 

[Rich Grise]

On Sat, 21 May 2005 14:49:55 -0700, BobG wrote:

Maybe just make a preamp. How much plate voltage to get the thing to
work? 100V?

You can get transconductance at amazingly low plate voltages. I saw an
article in QST or something, 30 or 40 years ago, that had a QRP receiver
with 12 V. on the plates. 12AX7, I think.

But was the guy's question, "How do I build a TOOB amp" or "I found this
TOOB - how can I use it?"

I say, mount it on a minibox, and drive the filament with a 6V lantern
battery in series with the speaker output from a real amp. Set it on
top of your stack - It'll look KEWL! %-}

Cheers!
Rich

 

[Ken Smith]

In article <WXMje.19469$J12.15589@newssvr14.news.prodigy.com>,
Joerg <notthisjoergsch@removethispacbell.net> wrote:

Hello Don,

Use any old DSP and a 6AQ5A distortion algorithm.

Can also be done with a CD4007. But then again, a 6AQ5 gloweth so
nicely. A DSP lacks that retro feel.

Drinking glasses + red LEDs + DSP

--
--
kensmith@rahul.net forging knowledge

 

[Robert Baer]

Pooh Bear wrote:

Sampei wrote:


I found a sylavania 6AQ5A tube and i want to build a tube guitar amp
with this electronic tube.Anyone has a link or a schematic?
Thanks in advance


Does the 6AQ5A have ' magic sound ' ?

Graham


Near 3W or more, it does...