How to reduce bass output??? - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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 15th October 2005, 07:01 PM   #1
diyAudio Member
Join Date: Feb 2001
Default How to reduce bass output???

OK, I know this seems like an obvious one at first but not so.

I have a Toyota Solara with the JBL audio system which uses a ~9" sub for the bass. When I have the bass setting on the radio at "0", sometimes the bass can be just ridiculously loud, even at low volumes. I think they have separated the sub and the other woofers from the bass setting, as increasing or decreasing the bass setting has little effect.

The woofer is a dual voice coil JBL 86160-AA310 4.6ohm (likely meaning less w/o TS numbers...) in a .24 cu ft ported box which is plastic with a molded in port 2"x15" and 3" long. The bass appears to be most loud at upper bas frequencies, and the box size seems to indicate tuning for higher bass frequencies.

So to my question, how can I drop the bass volume without messing with the amp or x-over? I was thinking to mass load it and try to lower the fs, but I know this changes other parameters too. Maybe block off part of the port? I do not want to change boxes either, as it fits in a tight space.

Any ideas? Suprisingly, some songs that are less bass intensive sound really nice on the low end... for a factory 17W woofer, that is.

  Reply With Quote
Old 15th October 2005, 07:37 PM   #2
ruerose is offline ruerose  Canada
diyAudio Member
Join Date: Aug 2005
stuff the ports with some socks, thats the easiest and cheapest way to remove some output. If the ports are tuned to the annoying freq. you will notice a dramatic improvement.
  Reply With Quote
Old 18th October 2005, 04:36 AM   #3
sasav is offline sasav  United States
diyAudio Member
Join Date: Oct 2005
Originally posted by ruerose
stuff the ports with some socks, thats the easiest and cheapest way to remove some output. If the ports are tuned to the annoying freq. you will notice a dramatic improvement.
Even better stuff the ports with rotten tomatoes and dump it at a nearest garbage collection point or nearest Toyota dealer.
Then buy or build a proper subwoofer.
There are no miracles and you have to find a place for a proper subwoofer.
  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
Dummy load to reduce output of 300w/ch amp? steve71 Solid State 18 1st January 2008 11:07 PM
Reduce the booming bass hpolkerman Multi-Way 22 13th October 2007 11:48 AM
Reduce DAC output current ? Bernhard Digital Source 1 10th January 2006 10:46 PM
high output sub bass mart34 Subwoofers 1 13th July 2004 04:06 PM
Help:How To Reduce Transformer Output Voltage? phill77 Solid State 0 21st April 2003 12:04 PM

New To Site? Need Help?

All times are GMT. The time now is 02:11 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