DIY subsonic filter anyone? - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

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
Thread Tools Search this Thread
Old 25th August 2003, 02:41 PM   #1
BobM is offline BobM  United States
diyAudio Member
Join Date: Apr 2003
Location: Long Island, New York
Default DIY subsonic filter anyone?

Anyone construct a DIY subsonic filter to get rid of the woofer pumping action when playing vinyl? A few questionsI have on a project like this:

(1) I assume it might go between the preamp and the amp, and would therefore need fairly high grade components to be inaudible (but could it go in the phono preamp??? - a far better location for me)

(2) It would need a switch to be active or bypassed

(3) I don't have a clue on the components needed or a schematic for this

  Reply With Quote
Old 25th August 2003, 03:23 PM   #2
Keld is offline Keld  Sweden
diyAudio Member
Keld's Avatar
Join Date: Jan 2002
Location: BorŚs, Sweden, Tellus
  Reply With Quote
Old 25th August 2003, 04:36 PM   #3
sam9 is offline sam9  United States
diyAudio Member
sam9's Avatar
Join Date: Jun 2002
Location: Left Coast
How about a 1 or 2uF film cap in series on the preamp or amp input. I recall some 70's gear that touted a "rumble filter" that was no more than that. You probably want to switch it out when paying CD's. If you can modify your preamp you could put only on the pono input, then you wouldn't need to switch it (unless your LP include some old Telarc's or Vigil Fox D2D's.)
  Reply With Quote
Old 25th August 2003, 05:17 PM   #4
diyAudio Member
jackinnj's Avatar
Join Date: Apr 2002
Location: Llanddewi Brefi, NJ
Default link to ADI

here's the Analog Devices online filter design software -- just choose an F3 of 16Hz or so:
  Reply With Quote
Old 25th August 2003, 05:21 PM   #5
diyAudio Member
jackinnj's Avatar
Join Date: Apr 2002
Location: Llanddewi Brefi, NJ
and you get a nice magnitude/phase plot
  Reply With Quote


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
48db/oct Subsonic filter IvŠn Francisco Solid State 4 28th December 2007 04:57 PM
subsonic filter from 25hz - 0hz djronbxs Solid State 0 27th November 2007 06:43 AM
Subsonic filter bybass? jakelm3075 Subwoofers 14 16th March 2006 01:55 PM
Is it possible: passive subsonic filter? Geez Subwoofers 7 9th August 2005 05:50 AM
Subsonic filter for a SubWoofer guylemar Subwoofers 10 28th March 2003 01:38 AM

New To Site? Need Help?

All times are GMT. The time now is 01:34 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2