P1 preamplifier - diyAudio
Go Back   Home > Forums > Commercial Sector > Group Buys

Group Buys Members group buys

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 11th March 2014, 04:57 PM   #1
diyAudio Member
 
Join Date: Oct 2011
Default P1 preamplifier

I guess its time that the P1 pre-amplifier got an offering. At this point in time no costs are associated with the boards. This is a fishing for interests in this project.

Click the image to open in full size.

kind regards,

Harrison.
__________________
www.harrisonaudiolabs.com
  Reply With Quote
Old 21st March 2014, 12:06 AM   #2
diyAudio Member
 
Join Date: Dec 2004
Location: Bakersfield, CA
I'm interested.
__________________
Best Regards,
Carl Huff
  Reply With Quote
Old 21st March 2014, 01:44 AM   #3
bimo is offline bimo  Indonesia
diyAudio Member
 
bimo's Avatar
 
Join Date: Sep 2010
Location: Depok, West of Java
Quote:
Originally Posted by OnAudio View Post
I guess its time that the P1 pre-amplifier got an offering. At this point in time no costs are associated with the boards. This is a fishing for interests in this project.

kind regards,

Harrison.
Douglas Self use 1K pot on his tone control to achieve high S/N ratio. But 1K pot is hard to find and then I design a tone control using 10K pot.
  Reply With Quote
Old 21st March 2014, 11:53 AM   #4
gabbar is offline gabbar  United States
diyAudio Member
 
Join Date: Jun 2013
Location: Virginia
Will there be any significant difference if I use asingle OPA4134, which is a quad version of OPA134.
  Reply With Quote
Old 6th May 2014, 10:58 PM   #5
diyAudio Member
 
mrsavage's Avatar
 
Join Date: Nov 2011
Location: Columbus, Ohio
Default I'm interested!

I am very interested.
  Reply With Quote
Old 9th May 2014, 10:36 AM   #6
Vostro is offline Vostro  South Africa
diyAudio Member
 
Vostro's Avatar
 
Join Date: May 2012
Location: Other side of the fence
Harrison, will this be a mono board, or a stereo.
I've been looking for a preamp, so I'm Interested.

My ideal would be Stereo with pre subwoofer out, but Thats a different project.
  Reply With Quote
Old 11th May 2014, 11:05 PM   #7
diyAudio Member
 
Join Date: Feb 2014
Location: skien
I`m interested..

Gisle
  Reply With Quote
Old 17th May 2014, 11:32 AM   #8
diyAudio Member
 
Join Date: Oct 2011
Quote:
Originally Posted by bimo View Post
Douglas Self use 1K pot on his tone control to achieve high S/N ratio. But 1K pot is hard to find and then I design a tone control using 10K pot.
The term low noise really has meaning when you are working with really low signals from lets say outer space that you need to amplify by a factor of say 1000 or more, thats where the noise becomes a headache because you amplify it also.

Or for recording chains.... well.... hope the growth isn't exponential.....

However for line level signals for playback, theoretically depending on knowledge base in use it should be no big deal.

The signal should be run at a level such that it swamps the noise generated by the resistor resulting in good signal to noise ratio, also depends on the ears sensitivity to signal to noise ratios above a certain threshold.

Assumption here is that amplifier is doing 30dB
__________________
www.harrisonaudiolabs.com
  Reply With Quote
Old 17th May 2014, 11:37 AM   #9
diyAudio Member
 
Join Date: Oct 2011
Quote:
Originally Posted by gabbar View Post
Will there be any significant difference if I use asingle OPA4134, which is a quad version of OPA134.
Try it out with the quad amp and depending on its structure let us know if there is any audible or measurable crosstalk . However it should be pretty low really considering the R&D put in
__________________
www.harrisonaudiolabs.com
  Reply With Quote
Old 17th May 2014, 11:43 AM   #10
diyAudio Member
 
Join Date: Oct 2011
Quote:
Originally Posted by Carl_Huff View Post
I'm interested.
Noted

Quote:
Originally Posted by mrsavage View Post
I am very interested.
Noted
Quote:
Originally Posted by Vostro View Post
Harrison, will this be a mono board, or a stereo.
I've been looking for a preamp, so I'm Interested.
My ideal would be Stereo with pre subwoofer out, but Thats a different project.
Noted
Its gonna be modular really so any number of channels
The pre sub would have to be its own module and if you do want that, you sure want much more
Quote:
Originally Posted by gwrskien View Post
I`m interested..

Gisle
Noted
__________________
www.harrisonaudiolabs.com
  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
P1 preamplifier OnAudio Analog Line Level 52 22nd December 2014 04:35 PM
questions preamplifier aleph P1.7 vivanco Pass Labs 21 11th March 2011 08:58 PM
Aleph P1.7 Dual Mono Block Preamplifier Bengali Swap Meet 0 27th December 2008 01:47 AM
New build of Aleph P1.7 preamplifier t3447ml Pass Labs 21 27th March 2008 12:32 PM
Another use for a P1.7 analog_sa Pass Labs 1 27th June 2007 09:15 AM


New To Site? Need Help?

All times are GMT. The time now is 03:45 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