New build of Aleph P1.7 preamplifier

t3447ml · 15th November 2006, 02:07 PM

For your consideration, my Aleph P1.7. I would like to thank Nelson Pass and everyone else on this forum for making this hobby accessible to me, Kristijan Kljucaric for the main and power supply boards and Mikkel Simonsen (Dantimax) for the 64 step relay attenuator.

t3447ml · 15th November 2006, 02:09 PM

Front Panel

t3447ml · 15th November 2006, 02:10 PM

Rear Panel

hifimaker · 15th November 2006, 02:30 PM

Very nice!

Where did you get the chassis and the attenuator board?

How are you enjoying the sound?

-David

mlloyd1 · 15th November 2006, 02:45 PM

and where did you get the feet?
indeed, very nice looking.
how do you like the sound?

mlloyd1

Quote:

Originally posted by dw8083
Very nice!

Where did you get the chassis and the attenuator board?

How are you enjoying the sound?

-David

folkeb · 15th November 2006, 03:22 PM

Hi!

Very nice job indeed! What value (resistor) did you use for the Relvol3 board? Did you put the relvol3 on the output or input?

Best regards,
Folke

t3447ml · 17th November 2006, 12:28 PM

Chassis and feet came off of a junked amplifier I pulled out of the trash.

RelVol3 is on the output set for 1K resistance.

I'm not ready to comment on the sound yet. The system is totally new, consists of an Aleph-X and back loaded Fostex FE108EZ horns. All of which have there own issues. The Aleph-X runs too hot and the horns are weak on bass.

folkeb · 17th November 2006, 07:51 PM

What capasitors did you use on the main board and PSU board? I was thinking of going with BG Ns if nothing else is recommended...

Best regards,
Folke

t3447ml · 20th November 2006, 12:35 PM

Folkeb, thanks for your question, it causes me to recall the many happy hours I spent looking for the right capacitor. I first looked for a metallzed polyprolpyene cap but could find none that would fit the board I was using, as I recall it has a spacing of 27 mm. What I ended up with are 10uf Panasonic ECQ-E(F) metallized polyester caps.
At the time I has not familiar with the BlackGate N caps. With what I have read here in this forum I would be inclined to use them if starting this project now.

folkeb · 20th November 2006, 03:58 PM

Alas, the everlasting discussion, what cap to use? I have heard some say that the MKP caps are better than the BG N's, but then others say otherwise. This leaves me... not that wise!

Have you compared different caps, or was it only a question of size?

Best regards,
Folke

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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
PCB for Aleph P 1.7 preamplifier	strobo	Pass Labs	65	30th March 2008 09:40 AM
Pass Aleph P 1.7 preamplifier kit for sale	supernet	Swap Meet	11	29th May 2006 12:43 AM
Aleph P 1.0 preamplifier - just finished	zygibajt	Pass Labs	39	8th January 2006 11:17 PM
Help to build a preamplifier	AMR	Solid State	2	2nd June 2004 10:23 AM

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

15th November 2006, 02:30 PM	#4
hifimaker diyAudio Member Join Date: Oct 2003 Location: San Jose	Very nice! Where did you get the chassis and the attenuator board? How are you enjoying the sound? -David

15th November 2006, 03:22 PM	#6
folkeb diyAudio Member Join Date: Jan 2006 Location: Trondheim	Hi! Very nice job indeed! What value (resistor) did you use for the Relvol3 board? Did you put the relvol3 on the output or input? Best regards, Folke

17th November 2006, 12:28 PM	#7
t3447ml diyAudio Member Join Date: Oct 2005	Chassis and feet came off of a junked amplifier I pulled out of the trash. RelVol3 is on the output set for 1K resistance. I'm not ready to comment on the sound yet. The system is totally new, consists of an Aleph-X and back loaded Fostex FE108EZ horns. All of which have there own issues. The Aleph-X runs too hot and the horns are weak on bass.

17th November 2006, 07:51 PM	#8
folkeb diyAudio Member Join Date: Jan 2006 Location: Trondheim	What capasitors did you use on the main board and PSU board? I was thinking of going with BG Ns if nothing else is recommended... Best regards, Folke

20th November 2006, 12:35 PM	#9
t3447ml diyAudio Member Join Date: Oct 2005	Folkeb, thanks for your question, it causes me to recall the many happy hours I spent looking for the right capacitor. I first looked for a metallzed polyprolpyene cap but could find none that would fit the board I was using, as I recall it has a spacing of 27 mm. What I ended up with are 10uf Panasonic ECQ-E(F) metallized polyester caps. At the time I has not familiar with the BlackGate N caps. With what I have read here in this forum I would be inclined to use them if starting this project now.

20th November 2006, 03:58 PM	#10
folkeb diyAudio Member Join Date: Jan 2006 Location: Trondheim	Alas, the everlasting discussion, what cap to use? I have heard some say that the MKP caps are better than the BG N's, but then others say otherwise. This leaves me... not that wise! Have you compared different caps, or was it only a question of size? Best regards, Folke

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