AMP40 mosfet PA with driver stage, VAS is LME49830

monkey29 · 13th June 2011, 06:53 AM

Hello,

This is the latest work.

LME49830+K2381/J407+K1529/J200 x2Pairs, ALL MOSFET PA.
Symmetrical left and right channels.
Hope you like this design.

poler · 12th January 2012, 05:15 AM

hello whats the power output and distortion figures on this amp? thank you

AndrewT · 12th January 2012, 11:22 AM

Where is the schematic?
Where are the build instructions?

monkey29 · 12th January 2012, 01:42 PM

REFERENCE DATA

- VAS Operating Voltage: DC ±45 ~ 85V
- OS Operating Voltage: DC ±35 ~ 55V
- Output Power: 55 ~ 140W @ 8Ω
- Load Impedance: 4/8Ω
- Frequency response: 10Hz ~ 100KHz (-0.3dB)
- Voltage Gain: 31dB

monkey29 · 12th January 2012, 01:43 PM

monkey29 · 12th January 2012, 01:46 PM

thor61 · 27th February 2013, 04:32 AM

Looks GOOD ! How does it sound ?

Can it be built using IRFP240/9240 x2 Pairs ?

borys · 22nd March 2013, 08:38 PM

According to lme guide design yes you can use irfp240/9240 pair

13th June 2011, 06:53 AM	#1
monkey29 diyAudio Member Join Date: May 2005 Location: Beijing	AMP40 mosfet PA with driver stage, VAS is LME49830 Hello, This is the latest work. LME49830+K2381/J407+K1529/J200 x2Pairs, ALL MOSFET PA. Symmetrical left and right channels. Hope you like this design.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
LME49830 with 2SK1058/2SJ162 output stage	sam xt	Chip Amps	11	1st September 2010 06:41 AM
LME49810, LME49830 or LM4702? BiPolar or Mosfet output?	sendler	Chip Amps	27	6th March 2009 02:42 AM
MOSFET IRFP240 Output using LME49830 driver chip	lineup	Chip Amps	5	31st July 2008 09:43 AM
Mosfet drive in Vas stage and use Bipolar output	YUTK	Solid State	0	26th May 2005 05:50 AM
Allowable impedance of mosfet driver stage	Circlotron	Solid State	2	30th August 2002 03:16 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	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

12th January 2012, 05:15 AM	#2
poler diyAudio Member Join Date: Jul 2009 Location: Los Angeles	hello whats the power output and distortion figures on this amp? thank you

12th January 2012, 11:22 AM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Where is the schematic? Where are the build instructions?

12th January 2012, 01:42 PM	#4
monkey29 diyAudio Member Join Date: May 2005 Location: Beijing	REFERENCE DATA - VAS Operating Voltage: DC ±45 ~ 85V - OS Operating Voltage: DC ±35 ~ 55V - Output Power: 55 ~ 140W @ 8Ω - Load Impedance: 4/8Ω - Frequency response: 10Hz ~ 100KHz (-0.3dB) - Voltage Gain: 31dB

12th January 2012, 01:43 PM	#5
monkey29 diyAudio Member Join Date: May 2005 Location: Beijing

12th January 2012, 01:46 PM	#6
monkey29 diyAudio Member Join Date: May 2005 Location: Beijing

27th February 2013, 04:32 AM	#7
thor61 diyAudio Member Join Date: Feb 2010	Looks GOOD ! How does it sound ? Can it be built using IRFP240/9240 x2 Pairs ?

22nd March 2013, 08:38 PM	#8
borys diyAudio Member Join Date: Feb 2005 Location: Krakow	According to lme guide design yes you can use irfp240/9240 pair