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

operation below fs
operation below fs
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 21st October 2006, 11:40 PM   #61
REK is offline REK  United States
diyAudio Member
Join Date: Jul 2006
Originally posted by ChocoHolic
...back from holidays...

BTW: Why is the low cut of the power amp relevant?
As long as it is much lower than the room modes it should not affect the booming. (I think..)
In my case the power section will be a DC coupled class D amp.

Depending on the application, I plan to have a 6th order 1db ripple tschebbychef around 8 or 9 Hz - cutting off the subsonics. And additional may be a 'party power filter', = 2nd order butterworth below 40Hz, in order to allow high SPL without exceeding Xmax of the speakers.
I recommend having flexibility in setting the low frequency cutoff. From my experience, setting the control at a higher frequency than 9Hz removed some of the rumblings and thuds of door slams in CD's and DVD's that I played. There is one DVD movie that I saw that had the woofer cones moving below 4 Hz. If your going to strive for reproducing all that is on the disc, I recommend not limiting yourself to 8 or 9 Hz. There is plenty down there to experience.
  Reply With Quote


operation below fsHide 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
CFB and A2 operation hemgjord Tubes / Valves 2 9th September 2008 10:42 PM
dcc salvage operation jaudio Digital Source 1 27th October 2006 12:24 PM
Balanced Operation gchrist Pass Labs 1 21st July 2003 01:23 PM
Class B operation ding Solid State 17 8th October 2001 05:37 AM

New To Site? Need Help?

All times are GMT. The time now is 06:40 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio