Recommendationf for 12h single ended Class A amp with 12V/120A dual Lambda SMPS

muddasirwaheedmalik · 5th February 2012, 11:02 AM

Hi,

I got a pair of 12V-120A, 1300Watts TDK-Lambda SMPS in perfect working condition from flea market for around 100USD each. So i can have +/-12 to +/-15 Volt rail capable of continous 120 A !!!!!

Any suggestions how and can i use to power the constant current drain of Single Ended Class A amp with Mosfets like 2SK1058, or IRFP140 MULTIPLE IN PARALLEL for higher output power and better damping, like ZEN or SON of ZEN (Balanced version for better CMMRR/noise rejection).

The idea is to avoid heavy tranformers over 1KVA for each block , ripple capacitors, huge inductors and huge space.....just two SMPS with 1.3KW capacity continous thus reducing cost, hum, heat and time and ease of construction.

Is it right to do ? can i use mutiple devices in parallel , i intend about 30-40W pure CLass A single ended to run B&W 802.
Any suggestions as i intend to run several output devices in parallel to improve continous power disspiation, reducing output impedance and getting better damping factor . please suggest

Roscoe Primrose · 6th February 2012, 05:13 PM

The only way you're going to get that much power into 8ohms with rail voltages that low is to use an output transformer to step up the output voltage....

Roscoe

AndrewT · 6th February 2012, 06:08 PM

Pass shows a balanced single ended amplifier.

5th February 2012, 11:02 AM	#1
muddasirwaheedmalik diyAudio Member Join Date: Jul 2010	Recommendationf for 12h single ended Class A amp with 12V/120A dual Lambda SMPS Hi, I got a pair of 12V-120A, 1300Watts TDK-Lambda SMPS in perfect working condition from flea market for around 100USD each. So i can have +/-12 to +/-15 Volt rail capable of continous 120 A !!!!! Any suggestions how and can i use to power the constant current drain of Single Ended Class A amp with Mosfets like 2SK1058, or IRFP140 MULTIPLE IN PARALLEL for higher output power and better damping, like ZEN or SON of ZEN (Balanced version for better CMMRR/noise rejection). The idea is to avoid heavy tranformers over 1KVA for each block , ripple capacitors, huge inductors and huge space.....just two SMPS with 1.3KW capacity continous thus reducing cost, hum, heat and time and ease of construction. Is it right to do ? can i use mutiple devices in parallel , i intend about 30-40W pure CLass A single ended to run B&W 802. Any suggestions as i intend to run several output devices in parallel to improve continous power disspiation, reducing output impedance and getting better damping factor . please suggest

6th February 2012, 06:08 PM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Pass shows a balanced single ended amplifier. __________________ regards Andrew T.

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6th February 2012, 05:13 PM	#2
Roscoe Primrose Do you smell smoke? diyAudio Member Join Date: Jan 2004 Location: Virginia, USA	The only way you're going to get that much power into 8ohms with rail voltages that low is to use an output transformer to step up the output voltage.... Roscoe

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