The Hundred-Buck Amp Challenge - Page 105 - diyAudio
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Old 13th September 2011, 01:41 PM   #1041
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Originally Posted by Printer2 View Post
Meant tongue in cheek.
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Old 14th September 2011, 04:15 PM   #1042
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I guess I joined late in this. I found that a chassis can be very inexpensive if you use baking pan or loaf pan from the kitchen. Like this:

Amazon.com: Chicago Metallic Non Stick Mini Loaf Pans, Set of 4: Kitchen & Dining

Well, that's my contribution now.
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Old 15th September 2011, 11:30 AM   #1043
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Does the non-stick coating help the sound any?

Nice idea.
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Old 15th September 2011, 02:36 PM   #1044
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Here is a 2 watt guitar amp I built for my son about 2 years ago using series string AA5 type radio tubes. I used an isolation transformer and a real small audio transformer as you can see. Tubes used are 2 12AT6's, 50DC4 and 50C5. I did not design this amp, a fellow radio collector did. Its as simple as you can get.

Sal

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Old 15th September 2011, 03:48 PM   #1045
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PS: I should have wired the fuse differently. From the fuse I should have went to the on/off switch then to the power transformer.. I'll have to rewire it one day.

Sal
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Old 15th September 2011, 11:48 PM   #1046
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Quote:
Originally Posted by Sal Brisindi View Post
Here is a 2 watt guitar amp I built for my son about 2 years ago using series string AA5 type radio tubes. I used an isolation transformer and a real small audio transformer as you can see. Tubes used are 2 12AT6's, 50DC4 and 50C5. I did not design this amp, a fellow radio collector did. Its as simple as you can get.

Sal

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How's the hum?
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Old 16th September 2011, 02:51 AM   #1047
TheGimp is offline TheGimp  United States
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Nice simple looking amp.

Mine has taken on a life of it's own since I posted the design and sample files.

It now has Tremelo and Rev added.

I finally have the front panel and speaker fitted in the cab.
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Old 18th September 2011, 02:07 AM   #1048
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Ive been reading most of this thread with great interest, and I love the spirit of the competition. unfortunately being a child of the late 70s I have little experience of valve/tube amps besides my dean markley signature 120 head. If i were to try and make a simple amp with SS, im sure i could do a rough and ready class A, but despite their similarities, and simple designs, I could not do the same with tubes.

So respect is due. I have a little Kustom practice amp with a 6-8" speaker thats crying out for a simple tube amp conversion. This is one competition I would love to have been able to enter, but im happy building one of the designs, or maybe the winning one if its simple enough for my poor brain!
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Old 18th September 2011, 11:59 AM   #1049
gauze is offline gauze  United States
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Originally Posted by tubelab.com View Post
Many guitar amps use the venerable 12AX7. The 12AU7 and the 12AT7 are also common. The only common output tubes that will fit this price and power ranges are the 6AQ5, the 6BQ5 / EL84, the 6CW5, and maybe a Chinese EL34 or 6L6GC.
sorry for the off topic but I am a n00b re: this stuff, I happen to have a dozen 12A?7s and 4 EL84s (and a couple EL34s) where can I find schematics for guitar amps using these?
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Old 18th September 2011, 12:57 PM   #1050
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sorry for the off topic but I am a n00b re: this stuff, I happen to have a dozen 12A?7s and 4 EL84s (and a couple EL34s) where can I find schematics for guitar amps using these?
Google ax84 they have a simple SE amplifier that uses those tubes
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