Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Class D Switching Power Amplifiers and Power D/A conversion

TA-10.1 vs Modified SI
TA-10.1 vs Modified SI
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 19th March 2007, 07:05 PM   #1
Davet is offline Davet  United States
diyAudio Member
Join Date: Mar 2004
Location: Reston, Virginia (surburb of Wash, DC)
Default TA-10.1 vs Modified SI

I have a modified SI that has the following mods:

1 .Replaced the VR with the RS Alps.
2. Added a a toggle switch for power off/on.
3. Replaced the 330 electrolytic tank capacitor with a 1K MFD Panasonic FC electrolytic.
4. Replaced speaker Jacks with binding post. Kept cap across outputs.
6. Removed resistors r01/r02.
7. Bridged Capacitors C3/C4.
8. Stealthed Auricap 2.2 MFD input caps.
9. Added 1K MFD 25 Volt Nichicon cap at chip power supplies
10. Added 10K MFD 75V (CG) with .01 MFD teflon bypass on power rails (reservior cap).
11. Powered by 3 ampere adjustable 13.2 volt power supply.

This particular amp sounds really good and I have been listening to it off and on over the past 3 months. The last mod I did was the Teflon Cap bypass, which really made drums sound life like. The ambience of the rooms of live recordings is transcendental.

By contrast, I switched in a stock TA-10.1 and the highs sound etched. The TA-10.1 is fatiguing to listen to for any length of time compared to the SI. The Bass for the TA-10.1 is full, but a little flabby. I attribute this to the lack of the extra resevior capacitance. There seems to be a lot less air around cymbals and the drum kit sounds a little muffled. Surprisingly the TA-10.1 has a deeper soundstage.

Could the overall sonic texture be attributable to the Auricaps?
Should I undertake applying a Mardis Ultra Tweak kit it to the TA-10.1?

I plan to switch out the power supplies to see if the linear PS is comparable to the SMPS.

Any recommendations as to where to start on the TA-10.1 would be appreciated.
  Reply With Quote


TA-10.1 vs Modified SIHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
IC: Looking to get my T-Amp modified cmirza Swap Meet 0 29th May 2006 06:19 AM
ME2 modified MJS Multi-Way 7 20th October 2005 03:41 PM
modified mid-fi? amo Multi-Way 0 10th June 2003 01:21 AM
Can This Amp Be Modified??????? OMNIFEX Solid State 4 11th April 2003 02:37 AM
Modified ESP 3A amp. Freddie Solid State 1 26th June 2002 05:04 PM

New To Site? Need Help?

All times are GMT. The time now is 07:28 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio