Pictures of your diy Pass amplifier

[ijscobar]

Originally Posted by TC Goh

Hi


I am not sure what to do with P3 though. Just left it untouched, for now. Ideas?


TC

A quote from The F5T article:

One thing that many will appreciate is the addition of P3, which due to inattention on my part was not public until recently. It allows the adjustment of the distortion character between complete nulling of the second harmonic distortion to an arbitrary ratio of second to third harmonic. It definitely alters the sound, and reaffirms that things going on below 0.1% are audible. In any case, you can adjust it to taste.

Did you try that?

[RAMON43]

HI ,Les escribo desde chile , les muestro mi primer ampli zen del sr Nelson.pass
esta en una etapa primaria

[tinitus]

english please


moderation

[TC Goh]

Norb

What a build. The case looks very solid.

I noticed after a few days of listening that the F5T sounds a little bright with my Thiels. Despite the hum from the pre amp, it does sound very good. As I have replaced all the coupling caps with Jensens, it has that characteristic mellow sound, which I like.

I read that the B1 is very neutral so I am not sure whether it would fit my gear and listening taste.

Thanks for the suggestion and sharing. Really great work in routing all the wires.

TC

Originally Posted by norb

Dear TC Goh, maybe something like this:

An integrated B1 / PearlPhono Preamp. Add a switch, some power supplies, turn-on delay and you get a perfect preamp in no time .... or thereabouts.

Thanks very much, Mr. Pass and Mr. Colburn.
Norb

..... and yes, the case was the hardest part.

[TC Goh]

I read this in the Pass manual too :-). However, I haven't tried adjusting yet. From my recollection, even harmonics are 'good' and should improve the listening pleasure. However, I am not sure if my ears are as sensitive as Nelson's.

Anyway, the amps sounds so good currently .... why mess around with something that is already perfect, right !!!

Bridge mode is the way to go. The sound really opens up and bass extension is ... well .... out of this world.

Hey, is speaker protection using the upc1237 realiable? Any one using these successfully? How do the relays affect the sound?

Oh ... I need to rush as I am F5T'ing.... ha ha... even harmonics and all ....

TC
Pass'ian

Originally Posted by ijscobar

A quote from The F5T article:

One thing that many will appreciate is the addition of P3, which due to inattention on my part was not public until recently. It allows the adjustment of the distortion character between complete nulling of the second harmonic distortion to an arbitrary ratio of second to third harmonic. It definitely alters the sound, and reaffirms that things going on below 0.1% are audible. In any case, you can adjust it to taste.

Did you try that?

[TC Goh]

Thanks.... I think....

TC

Originally Posted by R-K Rønningstad

It is nice to see the power switch located on the front panel for a change!

[RAMON43]

Originally Posted by RAMON43

HI ,Les escribo desde chile , les muestro mi primer ampli zen del sr Nelson.pass
esta en una etapa primaria

SORRY

HI, I'm writing from Chile, I show you my first Zen amp sr Nelson.pass
is at an early stage

[norb]

Dear TC,

maybe the A75 would be an option for you, as you can alter the sonic characteristic of this amp in a large range.

I tried different values for some components as suggested in the A75 article (feed-back amount and folded cascode operation) and the amp could be made very mellow and softly sounding (Speakers are Isophon Europa).

Since i´m more the rocking kind, i set up the amp in the opposite soundwise, but the difference in sound characteristic was amazing, espacially voices and classical music could be made like honey: sweet, soft and golden.

Norb

[regiregi22]

Originally Posted by Zen Mod

too thick

for signal inside the chassis use 0.1mm dia

May I ask why?

[Zen Mod]

Allen Wright was talking about Time Smear