Aleph 1.7 Equipment - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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
Reply
 
Thread Tools Search this Thread
Old 2nd October 2007, 11:13 PM   #1
Pocoyo is offline Pocoyo  Indonesia
diyAudio Member
 
Pocoyo's Avatar
 
Join Date: Jan 2007
Location: Indonesia
Lightbulb Aleph 1.7 Equipment

Hii Mr Pass ... im a newbee

After i hear from anybody that aleph 1.7 having a good sound
so i decided to buy it from DIYAudio group buys. I buy it from
Veteran and the boards come to me with nice condition

Now my first question is about pot

I look that this preamp have 2 channel and each channel have
+ and -. For drive this channel can we use "stereo" attenuator
like dact ct 2-2K(X) or must we use "balance stereo" attenuator
like dact ct 2-4K(X)

sorry for talking about brand here
is we must use "balance stereo" so it was prize US$ 343
is there any attenuator cheaper than this ?

If we can use "stereo" attenuator what me must do to make
it this thing works?

what is the different result between this "stereo" attenuator
and "balance stereo" attenuator in your preamp

thank you, regards jeffry
  Reply With Quote
Old 2nd October 2007, 11:29 PM   #2
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
You can drive the inputs with a single-ended (RCA) input and
it works fine, but remember to place the shorting jumpers between
pins 1 and 3 of the unused XLR input connectors, otherwise it
will not sound good.

Balanced inputs are slightly preferred, and they do sound a little
different. You will expect more 2nd harmonic character with
the single-ended input, and you may or may not prefer it.



Later--- It occurs to me that you are talking about the balanced
output attenuator. In this case, balanced attenuation if necessary
if you want balanced outputs, but if you only need single-ended
output you can use a single attenuator and just short the
unused output to ground.
  Reply With Quote
Old 2nd October 2007, 11:47 PM   #3
Pocoyo is offline Pocoyo  Indonesia
diyAudio Member
 
Pocoyo's Avatar
 
Join Date: Jan 2007
Location: Indonesia
Default for balance output

thank you for reply Mr Pass

If i want balance output what attenuator ( type is important )
i must use it for this aleph 1.7
  Reply With Quote
Old 3rd October 2007, 05:08 AM   #4
Pocoyo is offline Pocoyo  Indonesia
diyAudio Member
 
Pocoyo's Avatar
 
Join Date: Jan 2007
Location: Indonesia
I buy 2 boards from Damian

1 set i will use Microcontroller with display

another set i will build in other ways
i will try in unbalance version like mr pass said
( thanks) but i prefer build in balance version

if anybody can give me direction to build this in
balance version (cheaper way), please help me

regards, jeffry
  Reply With Quote
Old 4th October 2007, 04:13 AM   #5
Ipanema is offline Ipanema  Malaysia
diyAudio Member
 
Ipanema's Avatar
 
Join Date: Jun 2004
Location: KL
Hi Jeffry,

You might want to try using one stereo carbon pot for each channel of Aleph1.7. It works in mono, so you need to adjust two knob instead of one for stereo. As a bonus, you will also have a balance adjustment for free.

Regards.
  Reply With Quote
Old 4th October 2007, 07:44 AM   #6
Pocoyo is offline Pocoyo  Indonesia
diyAudio Member
 
Pocoyo's Avatar
 
Join Date: Jan 2007
Location: Indonesia
Default Hii Ipanema

This is a good idea too
but grrrrrr !!!

what i mean ... is there a cheaper pot ?
with good quality and just use one pot
for one preamp

So i got a cool preamp with a best quality
This is the hard part for cool appearance
For this maybe i will buy it from percy i thing

by the way thanks a lot ipanema
  Reply With Quote
Old 4th October 2007, 08:12 AM   #7
diyAudio Member
 
analog_sa's Avatar
 
Join Date: Aug 2002
Location: Sofia
Quote:
Originally posted by Ipanema
Hi Jeffry,

You might want to try using one stereo carbon pot for each channel of Aleph1.7. It works in mono, so you need to adjust two knob instead of one for stereo. As a bonus, you will also have a balance adjustment for free.

Regards.


Not a good idea. Channel imbalance will lead to distortion.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
HP Equipment Ham Swap Meet 15 18th March 2012 12:42 PM
DIY Equipment - What do you use ? iCebReakEr409 Solid State 15 4th September 2011 01:58 AM
Your Equipment ! EdT Parts 3 27th December 2006 01:16 AM
Does anyone saw this equipment before? Sunsun22 Parts 8 14th October 2004 07:41 AM
FS: Various Lab. Equipment Bakmeel Swap Meet 1 14th July 2004 10:58 AM


New To Site? Need Help?

All times are GMT. The time now is 07:14 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2