jlh 80W

foxyb · 24th September 2004, 02:16 PM

Has anyone got any upgrade recommendations on the john linsley hood 80W MOSFET amplifier, currently sold by Williams Hart as their diy model?

I currently own the stereo version with power supply upgraded to a single high power transformer, elna cerafines, fast but soft recovery diodes and pass regulator mosfets upgraded to SJ56, SK176. I have an ALPS black beauty pot, and Mcap feedback capacitors and panasonic hfz caps on the power amp board.

In particular, is there an upgrade path to widen the soundstage? I listened to a friends ageing pioneer, shocked to find it had a wider soundstage.

Also, one channel seems about 10% louder than the other. Is this a fault, or should I just adjust the pot on that channel.

I would appreciate any comments.

Regards to yuse all.

MikeB · 25th September 2004, 11:00 AM

Have you listened to the pioneer instead of jlh, means you took the
pioneer to your home and replaced temporarily the jlh ?
That's the only way to compare amps as roomacoustics and speakers
have a big impact on the sound...

Mike

foxyb · 27th September 2004, 07:13 AM

I plugged in my friend's A400 in the same room, same speakers etc. It is always a little disappointing to have a mass-produced amplifier have a wider soundstage than your own amp!

MikeB · 27th September 2004, 09:24 AM

Yes, that's annyoing...
Maybe the JLH is not able to drive your speakers ?
I am not sure, maybe you should consider an amp with fast BJTs ?

Mike

24th September 2004, 02:16 PM	#1
foxyb diyAudio Member Join Date: Sep 2004 Location: Edinburgh, Scotland	jlh 80W Has anyone got any upgrade recommendations on the john linsley hood 80W MOSFET amplifier, currently sold by Williams Hart as their diy model? I currently own the stereo version with power supply upgraded to a single high power transformer, elna cerafines, fast but soft recovery diodes and pass regulator mosfets upgraded to SJ56, SK176. I have an ALPS black beauty pot, and Mcap feedback capacitors and panasonic hfz caps on the power amp board. In particular, is there an upgrade path to widen the soundstage? I listened to a friends ageing pioneer, shocked to find it had a wider soundstage. Also, one channel seems about 10% louder than the other. Is this a fault, or should I just adjust the pot on that channel. I would appreciate any comments. Regards to yuse all. __________________ Foxyb

27th September 2004, 07:13 AM	#3
foxyb diyAudio Member Join Date: Sep 2004 Location: Edinburgh, Scotland	I plugged in my friend's A400 in the same room, same speakers etc. It is always a little disappointing to have a mass-produced amplifier have a wider soundstage than your own amp! __________________ Foxyb

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

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

25th September 2004, 11:00 AM	#2
MikeB diyAudio Member Join Date: Apr 2004 Location: Gütersloh	Have you listened to the pioneer instead of jlh, means you took the pioneer to your home and replaced temporarily the jlh ? That's the only way to compare amps as roomacoustics and speakers have a big impact on the sound... Mike

27th September 2004, 09:24 AM	#4
MikeB diyAudio Member Join Date: Apr 2004 Location: Gütersloh	Yes, that's annyoing... Maybe the JLH is not able to drive your speakers ? I am not sure, maybe you should consider an amp with fast BJTs ? Mike

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)