Shopping & Learning: starting DIY on guitar amps

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technicolor
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Re: Shopping & Learning: starting DIY on guitar amps

Post by technicolor » Fri Jan 23, 2009 10:58 am

øøøøøøø wrote: You did a nice job!  Congrats!!

You are right about it being addictive.  How does it sound?
Thank you. I'm relatively pleased with how it all turned out. I made a few little mistakes, but learned a lot. I know if I were to do another one I'd be better prepared.

It sounds great. Highly recommended. Who knew 30 watts could be so loud?!

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Re: Shopping & Learning: starting DIY on guitar amps

Post by tribi9 » Fri Jan 23, 2009 11:13 am

Nice build Technicolor. How long did it take you to build the amp?
Any guitar i may be selling now or in the future will have the right amount of wear, and will not have ever been gigged with.

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Re: Shopping & Learning: starting DIY on guitar amps

Post by technicolor » Fri Jan 23, 2009 11:59 am

tribi9 wrote: Nice build Technicolor. How long did it take you to build the amp?
Thanks. I completed it in about 4 days. It went quicker than I thought. Once you get into it, you can't stop! Just...one....more....solder....joint.  :D

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Re: Shopping & Learning: starting DIY on guitar amps

Post by Jay » Fri Jan 23, 2009 12:25 pm

Those Metro amp kits are really cool and your build looks awesome.  I'd love to have one myself but its a bit too much amp for me these days I think.

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Re: Shopping & Learning: starting DIY on guitar amps

Post by rugby style » Mon Mar 30, 2009 10:31 am

Newbie question:  I've read the stickied threads here and understand why shorting a preamp tube's  plate to ground through the plate resistor discharges the filter caps.  Practically speaking though, how does one accomplish this?  Isn't sticking a pin into the plate socket a bit dangerous if that's where all the pent up current is?  Do you just wear rubber gloves? 

Sorry if this is a stupid question.  I'd rather not die.

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Re: Shopping & Learning: starting DIY on guitar amps

Post by rugby style » Mon Mar 30, 2009 10:35 am

Just answered my own question, or more correctly, øøøøøøø did:
as long as the standby switch is in the "off" position, the biggest, deadliest caps (the B+ supply) are NOT connected to the others.  When you throw the switch, however, they are free to bleed the power out through the preamp tube's plate load resistor.  Neat, huh?
So I can stick my greasy fingers all pin 1 when my amp is off and I won't get shocked.  I don't have a standby on my amp, so I'm assuming having it switched off (unplugged of course) will have the same effect, yeah?

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Re: Shopping & Learning: starting DIY on guitar amps

Post by øøøøøøø » Mon Mar 30, 2009 7:43 pm

You get at the tube socket pin 1 from INSIDE the amp's chassis--- the back side of it where the wire solders to.  Clip your test lead to that and also to the chassis, and with the amp unplugged, flip the switch to 'on.'

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Re: Shopping & Learning: starting DIY on guitar amps

Post by nitro cellulite » Wed Apr 01, 2009 12:19 pm

Nice Build technicolor! about a week or so ago I was looking at that site for those kits,,,torres and the mojotone site for 5f1 kits...then I came to offset becuase I really have only re-wired strats & pawls etc...but seeing your complete build I am thinking it is worth taking a shot at...how did the -biasing go? I have read the (march PDF instructions?) and that step at the end seems like it is the hardest...what do you do when you fire it up and things arent to spec on the multimeter? just curios! that seemed to be the biggest challenge...

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Re: Shopping & Learning: starting DIY on guitar amps

Post by Slow-Pop » Tue Apr 21, 2009 1:22 pm

This ones for the nerds  :P

Here is a link to out of print tube circuit books in downloadable pdf formats.  I found this because I was interested in the book 'Inside The Vacuum Tube' which they have.

http://www.pmillett.com/tecnical_books_online.htm

Enjoy!  :)
Before bringing up drugs with your kids, hook your turntables up to a wah-wah pedal.

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Re: Shopping & Learning: starting DIY on guitar amps

Post by tribi9 » Tue Apr 21, 2009 2:01 pm

Slow-Pop wrote: This ones for the nerds  :P

Here is a link to out of print tube circuit books in downloadable pdf formats.  I found this because I was interested in the book 'Inside The Vacuum Tube' which they have.

http://www.pmillett.com/tecnical_books_online.htm

Enjoy!  :)

That's an awesome link. Thx Slow-pop.
Any guitar i may be selling now or in the future will have the right amount of wear, and will not have ever been gigged with.

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Re: Shopping & Learning: starting DIY on guitar amps

Post by Slow-Pop » Tue Apr 21, 2009 2:04 pm

Sure...I like to share!  :)
Before bringing up drugs with your kids, hook your turntables up to a wah-wah pedal.

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Re: Shopping & Learning: starting DIY on guitar amps

Post by billaftermath » Fri May 08, 2009 7:20 pm

I apologize for bumping an old thread, but thanks for that link!

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Re: Shopping & Learning: starting DIY on guitar amps

Post by aen » Thu Jun 18, 2009 6:09 am

Dudes, I want to build a bassman.  The best part would be that it's tax deductable. mwuhahahahahahha!
I prefer their older stuff.

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Re: Shopping & Learning: starting DIY on guitar amps

Post by øøøøøøø » Thu Jun 18, 2009 6:53 am

aen wrote: Dudes, I want to build a bassman.  The best part would be that it's tax deductable. mwuhahahahahahha!
do it!

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Re: Shopping & Learning: starting DIY on guitar amps

Post by ymjon » Tue Mar 30, 2010 8:17 pm

What is a good place to get amp kits? Mojotone looks good but don't know the quality of the kits, Weber looked good but I've read that the parts quality isn't great...
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