Aleph-X Official PCB rev Beta & 1.0 - Page 30

up4 · 13th April 2003, 07:35 AM

thanks a lot !!!

Quote:

Originally posted by joke
They are under Pass Labs forum ... you will see The Aleph-X tread or you can use search and tipe , something like "Aleph-X high power " I think that will do...

Josip

skaara · 13th April 2003, 01:11 PM

With +-50V you Would get around 500W in 8 ohms, and few kW of heat so i wouldnt play with that high voltage.
With +-15V u get around 50W isnt that enough?

grataku · 13th April 2003, 01:48 PM

up4
Nelson himself uses 30-0-30 and 32 mosfet/chn (I think) for the XA200 and get 200W burning off 480W in the process, I would definitely stay below that.
15-0-15 gets you ~20 clean watts (clipping at ~30W).

ralf · 13th April 2003, 06:35 PM

Hi all,

where can i buy aleph x pcb`s?
I live in europe...

greets,
Ralf

up4 · 14th April 2003, 01:40 AM

I see ! thanks

I thought + - 50V DC only gives roughly 100WATT for poweramp...
it seems SuperSymmetric is different...
it doesn't waste much energy

so according to HiFiZen's design (4 MOSFET output per channel), I can get 20 ~ 30 Watt output? or as skaara said, I can get 50W ???
cuz my speaker only has 89db

Quote:

Originally posted by grataku
up4
Nelson himself uses 30-0-30 and 32 mosfet/chn (I think) for the XA200 and get 200W burning off 480W in the process, I would definitely stay below that.
15-0-15 gets you ~20 clean watts (clipping at ~30W).

nowater · 14th April 2003, 02:42 AM

up4 said: I thought + - 50V DC only gives roughly 100WATT for poweramp...
it seems SuperSymmetric is different...
it doesn't waste much energy

It is not more efficient, but it is a bridged amp, which requires lesser voltage rails for the same output power.

up4 · 14th April 2003, 03:42 AM

no kidding !!!

now I see why 15VDC can boost up to 30W or MORE.
please bear with my stupidness.

Quote:

Originally posted by nowater
up4 said: I thought + - 50V DC only gives roughly 100WATT for poweramp...
it seems SuperSymmetric is different...
it doesn't waste much energy

It is not more efficient, but it is a bridged amp, which requires lesser voltage rails for the same output power.

grataku · 14th April 2003, 05:31 AM

Quote:

Originally posted by up4
no kidding !!!
now I see why 15VDC can boost up to 30W or MORE.

It's LESS than 30W, trust me. I measured it. That is at clipping.
If you are familiar with distortion curves as a function of power, it should tell you that you can probaly listen to 20 decent watts during peaks of musical program.

yasalam · 15th April 2003, 03:48 PM

Chad, I have received the board. Totally owesome.
Thanks alot for your time and effort.

Yamin

jarek · 15th April 2003, 07:35 PM

Grataku:
What was output resistance during testing?

13th April 2003, 06:35 PM	#294
ralf diyAudio Member Join Date: Dec 2001 Location: Germany	Aleph x pcb`s Hi all, where can i buy aleph x pcb`s? I live in europe... greets, Ralf

15th April 2003, 03:48 PM	#299
yasalam diyAudio Member Join Date: Mar 2002 Location: Indonesia	Rev1.0 boards! Chad, I have received the board. Totally owesome. Thanks alot for your time and effort. Yamin

15th April 2003, 07:35 PM	#300
jarek diyAudio Member Join Date: Dec 2002 Location: Poland	Grataku: What was output resistance during testing? __________________ Jarek

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13th April 2003, 01:11 PM	#292
skaara diyAudio Member Join Date: Jun 2002 Location: Europe, Slovenia	With +-50V you Would get around 500W in 8 ohms, and few kW of heat so i wouldnt play with that high voltage. With +-15V u get around 50W isnt that enough?

13th April 2003, 01:48 PM	#293
grataku diyAudio Member Join Date: Dec 2000 Location: -	up4 Nelson himself uses 30-0-30 and 32 mosfet/chn (I think) for the XA200 and get 200W burning off 480W in the process, I would definitely stay below that. 15-0-15 gets you ~20 clean watts (clipping at ~30W).

14th April 2003, 02:42 AM	#296
nowater diyAudio Member Join Date: Sep 2002 Location: south	up4 said: I thought + - 50V DC only gives roughly 100WATT for poweramp... it seems SuperSymmetric is different... it doesn't waste much energy It is not more efficient, but it is a bridged amp, which requires lesser voltage rails for the same output power.

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