It lives! - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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
Reply
 
Thread Tools Search this Thread
Old 20th May 2005, 02:51 PM   #1
pjanda1 is offline pjanda1  United States
diyAudio Member
 
pjanda1's Avatar
 
Join Date: Jan 2005
Location: Boulder, CO
Default It lives!

After many months and $$, my BrianGT 3875 is alive and sounding great nude on my living room floor. I'll put up some pics when I get the chassis closed up. I have some issues to work on first. I'm getting 0mv offset out of one channel (probably a soft number, my meter may not be the best) and 97mv out of the other! I will go through the PS solder joints first. It may have a slight channel imbalance, but its probably the pot tracking. I can hear a faint FM station when the pot is either completely open or closed. When I move it a few degrees, it shuts off as if on a switch. Also, when I turn on a couple of lamps the trafo buzzes (you can only hear it nude and with your ear within a foot or so. Is this normal? It's dead quiet when nothing else is on. Finally, there is a decent amount of bleadthrough from input to input (when I have a source on and turn to another input, you can hear it faintly). Is this normal for the Grayhill switch (just switching +'s)? I'm not really bothered by any of these 'problems' except the offset.

It sounds far better than anything else I've heard in my system already. I know, I probably shouldn't be running it with this DC, but I was too excited and these aren't really expensive drivers.

Thanks everybody for all the help, especially BrianGT for the boards! I wouldn't even know about Gainclones, let alone have on running on my floor were it not for this board.

Paul
  Reply With Quote
Old 21st May 2005, 12:24 AM   #2
G4ME is offline G4ME  United States
diyAudio Member
 
Join Date: Jun 2003
Location: Location: Location
Send a message via AIM to G4ME
sounds good, i can't wait to see pics. What are you doing for a chassis

tell me more about your selector, where did you get it?
__________________
Two little mice fell in a bucket of cream. The first mouse quickly gave up and drowned. The second mouse, wouldn't quit. He struggled so hard that eventually he churned that cream into butter and crawled out.
  Reply With Quote

Reply


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
She lives! Psychobiker Tubes / Valves 2 19th July 2008 11:49 PM
Jam lives MikeW Solid State 6 17th November 2007 05:34 PM
YAY - another LM3875 lives!!! quickshift Chip Amps 9 7th February 2006 08:10 PM
Gumby Lives !!! Andy G Multi-Way 15 15th April 2005 09:18 AM
A New Le Monstre Lives Panelhead Solid State 17 7th April 2005 09:07 AM


New To Site? Need Help?

All times are GMT. The time now is 10:20 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2