PLH vs ???

MikeW · 4th September 2005, 01:08 AM

Now that you have been listening to the PLH for a couple of weeks, how does it compare to some of the other Pass and First Watt amps? Did you send the twins back to school? Did you try it with the 515 Watt MOSFETs?

Nelson Pass · 6th September 2005, 09:14 PM

I'm finishing up the piece, and will be posting it this week.

stappvargen · 10th September 2005, 09:09 AM

Not that many days left in "this week"!

/Niclas

Nelson Pass · 11th September 2005, 01:49 AM

From where I sit, it's done with 5 hours to spare.

MikeW · 22nd September 2005, 02:42 AM

I got back one of my JLH amps back from the loaner department. I started to do some listening tests comparing it to the PLH. Do they sound the same? Not really. Both sound good, but different. There will be more to add in a week or so after I crank that pot to some more positions.

PLH has 37 volt rail with 68000 uf.,.15ohm, 68000 uf. Bias @ 1.8 amps.

MikeW · 29th September 2005, 12:48 AM

I lisrened to the JLH for an hour or so tonight while putting on the front panel and top of the PLH. It is a very good sounding amp. Good highs and lows and good balance in between.
The difference between the JLh and PLH is the midrange. As the current gain is turned down the PLH midrange gets better. Then you get to a point when the highs and lows drop down. For Mr. Pass this is at the 9 O'clock position. For me it is anywhere between the 6 and 10 O'clock position depending on what I am listening to. Ten for Disturbed (Down with the sickness), Jam are you going to send that disc back soon? Six for Goldfrapp (Are you human).

jam · 29th September 2005, 01:02 AM

Mike,

You just have too much time on your hands......................

MikeW · 29th September 2005, 11:33 AM

Jam, when are you going to send me a schematic of that new amp so I can post it?

jam · 29th September 2005, 08:38 PM

Mike,

I am still working on the bugs on that amp. .............how about a Mosfet A40 v2............that is if that is ok with Mr.Pass?

Jam

Brian Donaldson · 30th September 2005, 02:53 AM

I'm starting to work on the A40 mosfet, but you know me....I'm thinking more output fets and higher rails.

4th September 2005, 01:08 AM	#1
MikeW diyAudio Member Join Date: Sep 2002 Location: North of Boston	PLH vs ??? Now that you have been listening to the PLH for a couple of weeks, how does it compare to some of the other Pass and First Watt amps? Did you send the twins back to school? Did you try it with the 515 Watt MOSFETs? __________________ MikeW

29th September 2005, 12:48 AM	#6
MikeW diyAudio Member Join Date: Sep 2002 Location: North of Boston	I lisrened to the JLH for an hour or so tonight while putting on the front panel and top of the PLH. It is a very good sounding amp. Good highs and lows and good balance in between. The difference between the JLh and PLH is the midrange. As the current gain is turned down the PLH midrange gets better. Then you get to a point when the highs and lows drop down. For Mr. Pass this is at the 9 O'clock position. For me it is anywhere between the 6 and 10 O'clock position depending on what I am listening to. Ten for Disturbed (Down with the sickness), Jam are you going to send that disc back soon? Six for Goldfrapp (Are you human). __________________ MikeW

29th September 2005, 11:33 AM	#8
MikeW diyAudio Member Join Date: Sep 2002 Location: North of Boston	New schematic Jam, when are you going to send me a schematic of that new amp so I can post it? __________________ MikeW

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6th September 2005, 09:14 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	I'm finishing up the piece, and will be posting it this week.

10th September 2005, 09:09 AM	#3
stappvargen diyAudio Member Join Date: Sep 2002 Location: Göteborg	Not that many days left in "this week"! /Niclas

11th September 2005, 01:49 AM	#4
Nelson Pass The one and only Join Date: Mar 2001	From where I sit, it's done with 5 hours to spare.

29th September 2005, 08:38 PM	#9
jam diyAudio Member Join Date: May 2001 Location: Charlotte,NC,USA	Mike, I am still working on the bugs on that amp. .............how about a Mosfet A40 v2............that is if that is ok with Mr.Pass? Jam

30th September 2005, 02:53 AM	#10
Brian Donaldson diyAudio Member Join Date: Jan 2003 Location: Texas, Love it or leave it	I'm starting to work on the A40 mosfet, but you know me....I'm thinking more output fets and higher rails.