small practice amp with master volume - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 26th November 2006, 12:05 AM   #1
pjpoes is offline pjpoes  United States
diyAudio Member
Join Date: Jan 2005
Location: New York
Send a message via AIM to pjpoes
Default small practice amp with master volume

Hey guys, I'm looking for a backup practice amp of some sort. I'm debating what direction I want to go right now. In one sense, I would like a nice small 8"-10" guitar amp with less than 5 watts as possible, if not like 1 watt clean and maybe 2 or 3 at say 10-20% distortion. Another Idea that I had was simply to build a 5 watt amp with a mast volume control to get the distortion I want, as many even half watt amps through a big enough cab is too loud. However, then I have my other need. This is gonna make my main amp sound useless, but its heavy, over 100lbs, and a pain to move around. I get this little impromptu gigs, if you want to call them that, where I just show up and set up for a small group and play. Things like maybe a small bar scene, a friends party, a club, whatever. In this scenereo, my main amp can be perfect to a little large, but made to work, its just too heavy. So for that I thought a single 12" practice amp with 5 watts might work, especially the smaller ones. Maybe even a 10 or 15 watt amp would be better.

Anyone have a recomendation. I have considered a modifed 5e3 amp design, I thought I saw some places that showed how to impliment a master volume control. I also considered the Vox AC15 and then I believe I read about an AC5 somewhere once. There is the Marshell 18 watt combo cuircit.

My playing style ranges from jazz, blues, and classic rock on up to some heavier rock styles and even occassionally some classic punk. For the heavier stuff I probably can use a pedal, but I do like the sound of overdriven tubes, and a fender with the output tubes stressed just sound better to me than a distortion pedal or even a Marshell at lower volumes. Any recomendations? Any complete kits worth looking at? I'm not afraid to diy without a kit, but its always easier, especially because I would like to finish this before Christmas. Thanks.
  Reply With Quote
Old 26th November 2006, 12:29 AM   #2
Sherman is offline Sherman  United States
diyAudio Member
Join Date: Feb 2004
Location: Chicago area
I built a slight modification of the P1 that I like a lot. It is a SE EL84 that gives about 4-5 watts in pentode mode.

The 'slight' modification I made was to use the preamp/tone stack section from the P1 Extreme with the EL84 output section of the P1. I wanted the tone stack, clean/dirty switch and master volume control that the Extreme offered. It worked out well.

I've used it with everything from a 4x12 cab to a single 8" driver. Nice tone and with the drive above about 50% good 'crunch'. With the drive cranked and the switch on dirty it has great distortion and grunge.

Check out the 'Legacy Projects' section of for details. They also have a kit with everything for $215. I don't know anything about the kit. I bought my trafos from Triode Electronics. A nice little 5W 5K SE output, a 4 Hy 90mA choke and a power trafo good for about 80mA, more than enough for the P1.
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Favorite Practice/small group amp N9VOC Instruments and Amps 12 26th January 2009 02:26 PM
Favorite Practice/small group guitar amp N9VOC Chip Amps 5 1st February 2008 02:42 AM
dbx & preamp master volume Al.M Multi-Way 0 4th January 2007 03:33 PM
Master Volume pot on Ballanced Line. RaphTube Parts 4 15th September 2006 09:42 AM
Adding a 2nd input to small practice amp nfway Chip Amps 4 20th October 2004 07:53 PM

New To Site? Need Help?

All times are GMT. The time now is 10:25 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2