View Single Post
  #26 (permalink)  
Old December 22nd 15, 06:23 PM posted to uk.rec.audio
Trevor Wilson
external usenet poster
 
Posts: 801
Default MOSFET amp - thump at switch on.

On 22/12/2015 7:25 PM, Eiron wrote:
On 22/12/2015 02:24, Trevor Wilson wrote:
On 22/12/2015 6:06 AM, Woody wrote:



I built one based on the Ambit PCB but then built the JLH regulated
supply which has relay protection for the L/S. One channel on that
decided to sit at about 120mV and there was no way I could get it
down. The supply rails were almost identical so I can only assume that
something has slipped in the amp design.

Without a doubt though the best power amp I have ever heard. Does 112W
into 8R and 224W into 4R - and that takes some doing!



**It's also impossible. No amplifier can exactly double it's power into
lower impedance loads. Your measurements were wrong.



Not even an ME1500?


**Not even the mighty ME1500, with it's 5kVA power transformer and
310,000uF of filter capacitance.

Or any amp with a regulated PSU.


**Nope. Output device saturation is the problem.


--
Trevor Wilson
www.rageaudio.com.au

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus