Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

Passive pre
Passive pre
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 9th October 2003, 05:55 AM   #1
adharvey is offline adharvey  Australia
diyAudio Member
 
Join Date: May 2003
Location: Thursday Island, Torres Strait (still Queensland), Australia
Default Passive pre

How many db of attenuation do i actually need with a preamp (passive).
If I want to use a transformer, tx-102, sowter (any others I should look at ??)

Is there a formula to work it out.

My amp is .5 volt input sensitivity and I run it directly from a cd player with a pot between now.

Thanks,

Adam
  Reply With Quote
Old 9th October 2003, 06:19 AM   #2
jan.didden is offline jan.didden  Europe
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: The great city of Turnhout, BE
Set the pot to "normal" listening level. Disconnect the player & amp. Measure resistance on both sides of the wiper, calculate their ratio, convert to dB.

Jan Didden
  Reply With Quote

Reply


Passive preHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Passive Crossover for Passive Subwoofer? Toast_Master Subwoofers 23 30th April 2006 12:14 AM
passive pre amp mschwilson Solid State 10 27th July 2005 01:43 PM
dB loss by using passive crossovers? Active vs Passive and 1st vs 4th order Hybrid fourdoor Multi-Way 3 11th July 2004 09:16 PM
Help with passive pre sejarzo Everything Else 9 27th April 2004 06:11 PM
Passive EQ? Johan_Ch Everything Else 1 4th September 2003 04:11 AM


New To Site? Need Help?

All times are GMT. The time now is 07:12 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki