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Looking for pcb-based DIY guitar amp project
Old 2nd December 2005
  #1
Gear Nut
 

Looking for pcb-based DIY guitar amp project

Hi!

Been looking around for a nice, simple, well documented DIY tube guitar amp project. It will be strictly for studio use, so preferably a low power one, like 1 watt or so.

There´s obviously a lot of amp projects out there, but pretty much all of them seems to be based on point-to-point wiring, which just seems like a real PITA. Is anyone aware of a DIY amp project complete with PCB layout?

I got the equipment to make my own PCB´s, but at this moment not the software or know-how to design the layouts.

cheers /Arka
Old 2nd December 2005
  #2
Lives for gear
 
Geoff_T's Avatar
 

Quote:
Originally Posted by Arka
Hi!

Been looking around for a nice, simple, well documented DIY tube guitar amp project. It will be strictly for studio use, so preferably a low power one, like 1 watt or so.

There´s obviously a lot of amp projects out there, but pretty much all of them seems to be based on point-to-point wiring, which just seems like a real PITA. Is anyone aware of a DIY amp project complete with PCB layout?

I got the equipment to make my own PCB´s, but at this moment not the software or know-how to design the layouts.

cheers /Arka
Hi

Shucks, I was just going to recommend you bought one of these and modified it with a 1/4" jack and a couple of small internal mods.

Three tubes, 60dB of gain, nice tone, and very portable. Pushes out a couple of watts and can drive an external speaker. You even get a magic eye!

http://cgi.ebay.com/Heathkit-Signal-...QQcmdZViewItem

I really don't know of a tube kit but this is a DIY project.

Old 2nd December 2005
  #3
Gear Nut
 

very interesting!

What internal mods would that have to be? I´m pretty much a novice when it comes to electronics theory, but I´m trying to pick up along the way.

thanks /Arka
Old 2nd December 2005
  #4
Lives for gear
 
Geoff_T's Avatar
 

Quote:
Originally Posted by Arka
very interesting!

What internal mods would that have to be? I´m pretty much a novice when it comes to electronics theory, but I´m trying to pick up along the way.

thanks /Arka
Hi

Nothing too hard but essential to prevent 250v dc shocks!

1. Replace the probe with a 1/4" mono jack.

2. Remove the pair of wires from the noise switch, keeping them together, and insulate them.

3. Remove the wires from the lower binding posts, keeping any pairs soldered together, and insulate them.

4. Not essential but a good idea is to replace the 2 core ac flex with a 3 core flex and plug, to ground the chassis.

Old 2nd December 2005
  #5
Gear Nut
 

wow, thats certainly not a lot of work...

checked ebay, there´s a bunch of different Heathkit models out there such as T4 and T2, would those be candidates for such a mod? Any other brands to look out for?

thanks, I greatly appreciate the help!

/Arka
Old 2nd December 2005
  #6
Lives for gear
 
Geoff_T's Avatar
 

Quote:
Originally Posted by Arka
wow, thats certainly not a lot of work...

checked ebay, there´s a bunch of different Heathkit models out there such as T4 and T2, would those be candidates for such a mod? Any other brands to look out for?

thanks, I greatly appreciate the help!

/Arka
Hi

The same basic rules apply to the earlier ones and they have a second input that you can fit a jack to and get an "alternative" sound.

Old 2nd December 2005
  #7
Build a real guitar amp. Mojo Music supply has all the stuff to make a tweed champ, a black face Deluxe Reverb and even a Marshall Blues Breaker.

Have fun!

Jim Williams
Audio Upgrades
Old 2nd December 2005
  #8
Lives for gear
 
Geoff_T's Avatar
 

Quote:
Originally Posted by Jim Williams
Build a real guitar amp. Mojo Music supply has all the stuff to make a tweed champ, a black face Deluxe Reverb and even a Marshall Blues Breaker.

Have fun!

Jim Williams
Audio Upgrades
Hi

Low powered and 1 watt?

The kits look pretty darn pricey... $500 - $1000+

Here's the link, anyway.... http://www.mojotone.com/

Old 26th December 2008
  #9
Here for the gear
 

you can use protel to design.

you can use protel to design. we will provide free dowloard one our website China tube Guitar amplifier, china guitar amplifier manufacturer, musical instrument chinese manufacturer now, you can send email to me [email protected] I send it to you.

Quote:
Originally Posted by Arka View Post
Hi!

Been looking around for a nice, simple, well documented DIY tube guitar amp project. It will be strictly for studio use, so preferably a low power one, like 1 watt or so.

There´s obviously a lot of amp projects out there, but pretty much all of them seems to be based on point-to-point wiring, which just seems like a real PITA. Is anyone aware of a DIY amp project complete with PCB layout?

I got the equipment to make my own PCB´s, but at this moment not the software or know-how to design the layouts.

cheers /Arka
Old 26th December 2008
  #10
Gear Maniac
 
Radioman's Avatar
 

You can look at Velleman DIY kits or, leaving in Europe, also at Nuova Elettronica and Elektor kits.
Old 26th December 2008
  #11
Gear Addict
 
Minion's Avatar
 

I recently built a PAIA Tube guitar pre-amp kit, I threw a 15 band eq after it and a TDA7293 Mosfet 100w power amp stage , sounds freaking awesome ...Maybe cost me $300 to build and sounds better than my guitarists Mesa dual rec and marshall , and is super freaking loud , it also has an active DI for recording and effects loop and speaker simulators....



PAiA - 9210KP Stack-In-A-Box Kit (International version - ships without 110V power supply), Vacuum Tube Preamplifiers, 9210KP


Cheers
Old 16th January 2009
  #12
Here for the gear
 

The Amp Garage :: View topic - 2w Sub Miniature Express

2 watt, sub-mini trainwreck express

heh
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