Sonic Impact Output Filtering Mods??? - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 31st August 2005, 10:44 PM   #1
Account Disabled
 
Join Date: Jun 2004
Location: Indiana
Default Sonic Impact Output Filtering Mods???

I know of all the famous mods done to these little wonder amp, but I can't seem to find any information on the values of the output filter caps. Is there a schemetic available? Has anyone done any mods to the output filtering by removing uneccessary caps or upgrading the caps? Thanks so much for your time in this matter, Kevin.
  Reply With Quote
Old 1st September 2005, 02:24 AM   #2
BWRX is offline BWRX  United States
diyAudio Moderator Emeritus
 
Join Date: Jan 2005
Location: Pennsylvania
I haven't seen anyone remove unnecessary caps other than the differential output cap. What I thought was interesting about that is that the Tripath datasheets say to use a 0.01uF cap but the stock SI's use a 0.15uF cap. I've tried it with both and thought it sounded a little brighter with the 0.01uF cap. I couldn't really tell a difference between the 0.01uF and no output cap.

Other than that, the Tripath datasheet for the TA2024 and TA2021B tell you what values to make the output capacitors for 4 and 8 ohm loads. They say to use 0.47uF for 4 ohms and 0.22uF for 8 ohms. You could also change the output inductors to change the cutoff frequency and the filter Q according to the equations in the datasheet (just the regular ones for a 12dB/oct lowpass filter).

I haven't felt the need to experiment because I like how the AMP3 sounds stock and I haven't experimented further on the SI because the AMP3 sounds better
  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
Sonic Impact Gen 2 mods (for a newb) chuyler1 Class D 18 7th July 2013 08:55 AM
Sonic Impact Tio mods? irishpatrick33 Class D 0 12th March 2009 03:54 AM
Sonic impact t-amp cutting out after mods markysoft Class D 1 10th November 2005 12:24 AM
Sonic Impact Opened for mods--Help! drjlo Class D 14 16th July 2005 04:32 AM


New To Site? Need Help?

All times are GMT. The time now is 01:17 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