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

Multi-Way Conventional loudspeakers with crossovers

3.5 Way .5 Additional Volume
3.5 Way .5 Additional Volume
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 29th October 2011, 05:38 PM   #1
Einric is offline Einric  United States
diyAudio Member
Einric's Avatar
Join Date: Feb 2011
Location: Bozeman, MT
Default 3.5 Way .5 Additional Volume

I am looking into adapting my two way DC28f + RS100-8 into a 3.5 way.
I will be looking to add a pair of Aura NS6-255-8A for the 3 & .5
My question is how much extra box volume is needed for the .5?
I would be looking at a .8 cuft sealed enclosure with the Aura crossed in at baffle step.
The second Aura will be added at 80hz to boost the low end.
How much extra volume should be included to account for the second driver?
Wouldn't the second driver totally destroy the response of the first driver when it kicks in at 80hz?
Should I model sealed with two and with one then take a midpoint on the smaller side of half?

  Reply With Quote
Old 29th October 2011, 07:03 PM   #2
Tytte71 is offline Tytte71  Norway
diyAudio Member
Join Date: Oct 2010
The normal way of dealing with .5 systems are to use the second driver to compensate for the baffle step diffraction loss and then let both drivers run in parallel downwards. Ideally both drivers would have equal volumes.

Easiest solution IMO would be to make it as a 3-way with both drivers running in parallel over its working range.

If you choose to make a 3.5 way, each of the woofers should preferably have about 6dB higher sensitivity than the RS100-8. Using the two added drivers in a 3-way, each of the drivers should preferably have equal sensitivity to RS100-8. Avoid selecting added drivers that in sum have higher sensitivity than the RS100-8. The Aurasound NS6-255-8A have some 7,5dB higher sensitivity than the RS100-8.
I don't know much about the Aurasound driver, but I would rather select one or two woofers that in sum have similar or lower sensitivity compared to the RS100-8 and that are made to play bass (lower fs, higher xmax, etc).

The 3,5 way idea could work but care should be put into tuning the cabinets (Q) and high-pass filtering the .5 driver (fill-in driver).
  Reply With Quote


3.5 Way .5 Additional VolumeHide 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
Additional help for those struggling to use their oscilloscope Perry Babin Car Audio 14 16th July 2011 08:26 AM
Additional info for the Beyma 15XA38Nd eeyore Multi-Way 0 17th April 2011 12:20 AM
SPL from additional drivers 454Casull Multi-Way 0 8th April 2009 02:36 AM
Using a 2-Way System w/ Additional Woofer TubeHead Johnny Multi-Way 5 13th December 2007 05:25 PM
Suggestions On Additional Circuits jaramke Solid State 0 6th February 2004 10:33 AM

New To Site? Need Help?

All times are GMT. The time now is 01:52 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio