Indefinite Pitch » Amplifiers http://xonedesign.ro/ip over the top Mon, 22 Aug 2011 05:08:32 +0000 en hourly 1 http://wordpress.org/?v=3.3.2 Amber http://xonedesign.ro/ip/2009/12/amber/ http://xonedesign.ro/ip/2009/12/amber/#comments Wed, 16 Dec 2009 20:48:13 +0000 FiveseveN http://xonedesign.ro/ip/?p=55 Amber is basically a Little Gem/Ruby without gain control but with switchable “channels”. It came about after I salvaged a nice and nasal speaker and found the time to build it one day. I kind of doubt I’ll ever use it but it’s a cute thing to have around, with its retro look and sound.

Specs:

  • LM386 amplifier (about 0.5W)
  • clean and overdrive channel
  • integrated supply and power cord
amber1 amber2 amber3 ]]> http://xonedesign.ro/ip/2009/12/amber/feed/ 2 Black Jack http://xonedesign.ro/ip/2009/10/black-jack/ http://xonedesign.ro/ip/2009/10/black-jack/#comments Wed, 14 Oct 2009 15:24:58 +0000 FiveseveN http://xonedesign.ro/ip/?p=43 I would call this a “utility amplifier” because it’s not voiced for a particular sound or configuration; instead my goal was to develop a transparent amp that could be used with guitar, bass, stompboxes and even ampsims and other line-level sources. It’s pretty simple as heads go but it does pack quite a few features for its size:

  • 12AX7 preamp section
  • 20W solid state power section
  • FX loop (preamp out, poweramp in), plus the preamp and power amp can be powered off independently, to be used as needed
  • 2 channels: second channel removes preamp negative feedback
  • switch-mode power supply for light weight and high efficiency
  • controls: gain, master volume, channel, preamp on/off, poweramp on/off
blackjack1 blackjack2 blackjack3 blackjack4 ]]> http://xonedesign.ro/ip/2009/10/black-jack/feed/ 0