Electronic cross-over help - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 30th December 2003, 03:47 PM   #1
diyAudio Member
 
Join Date: Apr 2003
Location: New York
Question Electronic cross-over help

This is my first post to this forum. I'm relatively new to desiging electronics. I'm building an analog cross-over using
BB opa2134 chips.

The buffer stage is powered by my own power supply: Toroidal transformer 2 x 18 V windngs -> +/- 28 V. The voltage measures ok. Then I use a 7815-7915 Voltage regulators to get +/- 15 V. This meaure +/- 15.1 V. I use 2 x 3300 uF (35 V) before the regulator and 2 x 33uF (50V) after the regulator. All legs of the regulators have in addition 2.2uF Tantalums.

I get amplification but when there's a
signal there's a distortion sound on the
signal. It sounds like dust on a vinyl
record and is only present when there's a signal. It is caused when I connect the power ground to source ground. But if I float the source ground there's a loud hum. If I substitute 2 x 9 V batteries the crackling goes away.

My question is what am I doing wrong? Any suggestions on how to troubleshoot and or fix? Pleaase be patient with me as I'm relatively new to this part of the game.

Thanks in advance

Harry Andree

  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
Need a cross ref # clayton Car Audio 2 27th November 2007 02:00 PM
A cross between A5 and A3 Stabist Pass Labs 47 21st December 2004 06:27 AM
No Cross Over! chris ma Multi-Way 27 3rd January 2003 02:53 AM
What do you get when you cross... nobody special Pass Labs 13 12th October 2002 06:47 PM


New To Site? Need Help?

All times are GMT. The time now is 11:57 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