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

Muse M20 EX2 TA2020 amp, relays switching on/off
Muse M20 EX2 TA2020 amp, relays switching on/off
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 1st June 2015, 08:42 PM   #1
Marc G is offline Marc G  Belgium
diyAudio Member
Join Date: Jun 2015
Default Muse M20 EX2 TA2020 amp, relays switching on/off


I have a Muse M20 EX2 amp and love the sound quality ... when it works.
The problem is that the output relays are not always switching on, or sometimes they switch on and a while later (can be an hour later), they switch off. Sometimes they quickly switch on again, but sometimes it takes minutes before they switch on again.
The strange thing is that when the relays are switched off, I can slightly hit the AMP and the relays switch on.

What could be causing this?
The power supply is 12V, 5A right now.

All ideas are welcome.
  Reply With Quote
Old 26th November 2017, 09:10 PM   #2
IRONHAND54 is offline IRONHAND54  United States
diyAudio Member
IRONHAND54's Avatar
Join Date: Dec 2014
Location: FORT WORTH, TX.
Muse M20 EX2 TA2020 amp, relays switching on/off
It's probably the power supply you got with the amp? i bought 2 of these off E-Pay and neither of the power supplies i got with them worked?? Good old Chi-Fi ingenuity! Anyway i got a couple of good quality 12VDC 5A power supplies from from P.E. onsale and they worked fine.
I use mine with a pair AP850 Outdoor 8" 2-Way High Definition Patio Speakers, and they sounded a little too shrill/forward with my IPhone listening to Pandora. I remembered a had a pair of in-line RCA 6DB attenuators in the drawer, so I went and got them, and installed them on the Y-Adapter cable plugged in to the AMP. WALLA, the combo sounded like a million bucks for my outdoor "Blues" rig!! The SMSL SA-36 PRO went into reserve for my grandkids in case one of their T-Amps goes toes up. Best sounding little T-Amp out there in my "Guesstimation!" Hope you get yours up and running.


Old thread, but could be useful to current owners

Last edited by IRONHAND54; 26th November 2017 at 09:13 PM. Reason: add-on
  Reply With Quote


Muse M20 EX2 TA2020 amp, relays switching on/offHide 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
Muse M20 has become garbled marshaul Class D 1 18th September 2014 10:03 PM
Muse M20 EX2 TA2020 amp pictures and some info Trileru Class D 26 13th May 2013 10:06 PM
Muse M20 ex dinanthardeman Class D 12 3rd April 2012 12:56 PM
MUSE M20 EX2 TA2020 (Modified) wushuliu Swap Meet 0 17th February 2012 06:21 PM
Power supply for muse m20 yakuza76 Class D 2 12th September 2010 03:07 AM

New To Site? Need Help?

All times are GMT. The time now is 05:51 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio