Bi-amp 3 way design selection and calcs - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 8th November 2006, 06:05 AM   #1
diyAudio Member
Join Date: Feb 2004
Location: Australia
Default Bi-amp 3 way design selection and calcs

After following the good advice on this forum some time ago, I ended up with an excellent Shiva-based sub as my first speaker project. Im now up to doing my first speaker. Electronics and woodwork are no issue, so I have decided to built a bi-amped three way since I already have the amps and PSUs.

Not having built anything other than the sub, its hard to select drivers other than based on more experienced folks subjective opinions. And with that Ive started with :

Peerless 850146 woofer
Vifa PH13WH0008 mid
Vifa TDG4506 tweeter

Using Unibox I see the 3db rolloff point for the 850146 is around 50 or 60Hz (as raf as I can see on the graph). I f I dont include the effects of Le (which I presume I dont since the driver is running directly off an amp) I also have a nice flat response. SPL @1m is 87.3dB.

For the PH13 I assume Unibox is of limited use because I am only using the mid-range portion of its response. Unibox's vented box recommendation refers only to base response. I assume this is correct, because my response for a closed box is somewhat less than flat, although tells me my enclosure should be 2.2L. Am I on the right track here ?

I also see the PH13 handles only 40W, producing 88.9dB @ 1m, a contrast to the 850146. But its moving a lot less air, so I guess that is also OK ?

And for the tweeter Im looking at the sensitivity of 90dB @ 1m, Im not sure how else I should be modelling it ?

If someone can provide some guidance on if my selections and assumptions are reasonable, and from here I should pick crossover frequencies and design the mid to tweeter crossovers.

Any guidance would be greatly appreciated.

  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
PR Calcs jwatts Subwoofers 0 30th May 2006 10:04 PM
Design review - comments on driver selection Jennice Multi-Way 11 11th February 2006 03:01 PM
BSC calcs Dave Jones Multi-Way 1 27th March 2005 04:38 AM
my heatsink calcs for Zen v4 faustian bargin Pass Labs 34 14th December 2003 03:21 PM
Need help on speaker design, and component selection BrianGT Multi-Way 5 5th February 2002 03:39 PM

New To Site? Need Help?

All times are GMT. The time now is 12:39 AM.

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