Sensitivity match in a 3-way system? all of equal sensitivity? or bass is 6db more? - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 4th November 2007, 03:35 PM   #1
diyAudio Member
 
Join Date: Dec 2006
Default Sensitivity match in a 3-way system? all of equal sensitivity? or bass is 6db more?

Dear friends,
I ve been fiddling over the net for knowing the right sensitivity of the drivers as its said that sensitivity of the woofer driver in a 3 way system will be 6 db more than that of the mids and highs....where mids and highs will be having the same sensitivity. Its said that the room absorbs that 6db. How far this is true?

please guide me.

thanks,
Ken
  Reply With Quote
Old 4th November 2007, 05:30 PM   #2
diyAudio Member
 
myhrrhleine's Avatar
 
Join Date: Jan 2006
Location: Avalon Island
Default Re: Sensitivity match in a 3-way system? all of equal sensitivity? or bass is 6db mor



No, the room may add sound level.
Depending on speaker placement.
Go for equal SPL ratings.
__________________
Just because you can't hear it doesn't mean no one can.
  Reply With Quote
Old 5th November 2007, 10:17 AM   #3
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

In a 3 way the nominal sensitity of the bass units should be ~ 4dB
higher than the midrange unit, giving some flexibilty to pad the
mid a dB or so back. The tweeter should be few dB above the mid
so this can also be attenuated back to match the midrange.

Buying them all the same sensitivity is wrong .......
If you do you will need to attenuate both mid and treble ~ 4 to 5 dB.

/sreten.
  Reply With Quote
Old 5th November 2007, 10:24 AM   #4
DeonC is offline DeonC  South Africa
diyAudio Member
 
DeonC's Avatar
 
Join Date: May 2002
Location: Kimberley, South-Africa
Hi Ken

It will be good for the bass to be 6dB more efficient if your XO point is at or higher than the baffle step frequency (just do a search to find out more). Other guys can comment more (and more competantly) on this.

Deon
__________________
I don't suffer from insanity. I enjoy every minute of it.
Have a look at my favorite thread: Interesting YouTube video clips
  Reply With Quote
Old 5th November 2007, 11:25 AM   #5
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

6dB is generally too much as you may not be able to lift the mid and
treble above your nominal bass level, attenuating bass is not good.

/sreten.
  Reply With Quote
Old 5th November 2007, 11:33 AM   #6
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
If you use 18" woofers you probably wont need any BSC
  Reply With Quote

Reply


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
What is input sensitivity? boxedin Solid State 17 28th January 2013 09:58 AM
driver sensitivity vs system sensitivity bvan Full Range 12 5th November 2007 07:57 PM
Dayton Reference 12HF, 15HF users? Building new bass system to match hornloaded tops. jlharden Subwoofers 8 30th November 2006 10:02 PM
Math to calc optimal voltage of tube dac to match amp input sensitivity? riotubes Tubes / Valves 7 9th November 2006 11:08 PM
Sensitivity and efficiency? sachi Multi-Way 16 7th February 2005 03:22 PM


New To Site? Need Help?

All times are GMT. The time now is 03:22 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2