x soz

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Peter Daniel said:
After playing with GC for some time, it would be hard for me to find a better sounding SS amp (in some aspects of sonic satisfaction of course). Do you have a link to JLH?

As to batteries being better, it probably depends on your mains condition and will vary greatly with location. I'm using baterries with my DAT recorder and comparing to a regular PS, it is slightly better (highs are smoother) but not that much.


...right, not that much, but much enough for him to fire his amp with batteries. Often the last pieces of better sound cost the most money.

here the link:
http://www.tcaas.btinternet.co.uk/
look for "JLH update"

...but i believe you, that your gainclone is one of the best sounding amps....if i have the time i would test..perhaps later...

Ralf

ps if you plan to build: only use Mj15003 of ON, availlable at Farnell.
All transistors are matched.

Dc offset is a bit tricky to adjust.

i use jensen copperfoil in oil cap as couppling capacitor. you can hear each capacitor and resistor you change.
 
my x-soz

i've been staring at Henrik's schematic of the x-soz for so long that
i finally had to give it a try. These are two mono blocks putting out
5 watts each.

first listen tonight and all i can say is amazing soundstaging
and crystal clear... and that was before warming up for an hour.
Thanks Mr. Pass and Henrik!
 

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Re: my x-soz

moe29 said:
.

first listen tonight and all i can say is amazing soundstaging
and crystal clear...




-That sounds about right! (Until you try to make it deliver more than 5W...) -Extremely clear and transparent; resolution in the mids and top is scary!
I am in the progress of making a pair of 15-20W monoblocks of the XSOZ monster. As I have buildt a few SOZ's my expectations are quite high to this new X-version. If X-ing the SOZ is anywhere near Xing the BZLS......:bigeyes: ;)


PS -Congrats moe! When will they get a decent chassi?
 
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Nice job Moe.
Any particular reason for the placement of your chokes?
Was this the best position to avoid hum?
Personally I would ply the caps further away from the mosfets on the heatsink.
Again we will have to push you a bit to make a decent enclosure :devily: but then again I'm sometimes as hopeless as you to finish a project ;)

/Hugo
 
I should say that this was a "proof of concept" project for me. I
wanted to see if i could build and x-soz and have it work. Thus,
the layout, the parts, etc. I am truly a neophite in building amps -
so please take my construction with a grain of salt! :)
(see Mads_K's P to P work for inspiration!)

As to the layout of the inductors - i've read on the Forum that when
placing two inductors close to each other, it's best to have them at
90 degrees. I have no hum problem at all. The amp is dead quiet,
with an unmodified BOSOZ as the pre.

I was trying to keep my point to point wiring short, thus the placement
of the 220uF caps near the FETs. I guess i was influenced by those
building GainClones and their point to point work. They have
power supply caps sitting right on top of their chips!

A lot could be done to make these amps "better" i suppose all the
same type resistors to start (!) and maybe a Black Gate cap for
the 220uF, some bypass caps in the power supply, etc. Maybe if
i can stop listening long enough i'll do that ;)

btw, i have no WAF problems, nor pets, thus i can get away with
having an amp like this sitting in my living room!

m.
 
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Joined 2001
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From my online dictionary:
monstrous: Shockingly hideous or frightful.
Exceptionally large; enormous: a monstrous tidal wave.
Deviating greatly from the norm in appearance or structure; abnormal. Of or resembling a fabulous monster.

seems to cover it............About the way my SOZ is shaping up
I dunno if the Pass amps want to be known this way!
 
diyAudio Editor
Joined 2001
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Hey Moe 29,

Maybe you should do what I was considering for the SOZ- mount everything onto a piece of plywood and hang it on your wall.
Maybe monoblocks, hang one by each speaker.

"It's scupture/It's an amp!/It's a drain cleaner"

Wait ! Wait!!

Mount each amp channel on a larger piece of ply, but not in the middle. Then cut a hole in the middle and put in a full range driver.

Add braces to support it on the ground and:

Viola! Self powered open baffle speakers/sculptures

Mark
 
After a couple of weeks of listening to my Aleph 2's i went back to
my X-SOZ tonight... what a beautiful sounding amp. At 5 watts it's
not as visceral as the Aleph 2's, but it's crystal clear and dead
quiet... just beautiful to listen to. Now i know why Mad_K is
building a 20 watt version - i was thinking the same thing tonight,
a little more power and look out! I would love to compare a
20 watt X-SOZ to a 25 watt or so Aleph-X. Because simply put, the
X-SOZ is the sweetest amp i've ever heard.
 
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