OB 8" Driver - 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 6th December 2007, 11:46 PM   #1
Zeinna is offline Zeinna  Canada
diyAudio Member
 
Join Date: Nov 2007
Default OB 8" Driver

I've got a Neo3 PDR and am looking for a 8" driver for mids.
Is the Peerless 850490 (HDS) or Seas CA21REX (H333)appropriate for OB?
These have been around a while. Maybe someone has worked with them and can comment

I'm planning on not spending too much starting on OB. I can get either of these for ~$45 each. Are there better for the same cost? Both these drivers have high sensitivity and low distorsion.

I'm looking at a 15" on the baffle for bass.

Thanks
  Reply With Quote
Old 7th December 2007, 01:13 AM   #2
holdent is offline holdent  Canada
diyAudio Member
 
Join Date: Nov 2005
Location: Ontario
Both drivers have too low of a Qts value and should be put in an BLH or closed box. Even if they were in massive OBs (for fun I modeled the Seas CA21REX in an OB of 40 x 40 in) they will start rolling off above 100 Hz

You may have to go to a smaller woofer and a closed or vented box to make a two-way system with the Neo3 PDR. I've never used the Neo3 PDR but it looks like it should be crossed over well above 2000 Hz. At this frequency you're starting to get into the breakup area of many 8" woofers. The Peerless woofer in particular has a problem (see http://www.partsexpress.com/pdf/297-646g.pdf). Consequently you'd probably do much better considering the Seas ER18RNX (or CA18RNX or CA18RLY) or the Peerless HDS 830883. They are all 6.5 in drivers. Zaph tested these drivers here: http://www.zaphaudio.com/6.5test/.

In any case the drivers you mention may be difficult to get. The Peerless 850490 is discontinued now and the Seas CA21REX appears to be sold out/discontinued.
  Reply With Quote
Old 7th December 2007, 03:43 AM   #3
diyAudio Member
 
Join Date: Jan 2006
Location: the netherlands
(Alert: newbie advise, only read it, no personal experience)

With the backcup removed and a 12db crossover the Neo3 can be crossed @2000hz.

2000hz for an 8" is pushing it a bit.
Better to use 6.5".
2000hz should be no problem and 30 degrees off axis should be ok aswell.

Asuming that 15" will be crossed around @250-300 a mid with a normal qts of .4 or .5 should be fine.
Afaik Peerless 6.5 nomex or hds would be great choices for ob mids.
I might be very wrong though.

As an alternative you could buy 2 lower priced mids in stead of 1 higher quality 8".
Normally a lower price also means higher qts.

http://www.visaton.de/de/chassis_zub...n/ws17e_8.html

http://www.tymphany.com/datasheet/printview.php?id=20

2x 6.5" have a sd of 300, 1x 8" has 200.
An 8" would reach lower though.
  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
12" "guitar" driver in Audio Speakers jwhit67 Multi-Way 4 11th February 2008 02:47 PM
FS: Silver Iris Coaxial 15" driver pair (sans XO and compression driver) theAnonymous1 Swap Meet 0 24th April 2007 12:09 AM
UK source of inexpensive 3" or 4" driver - high efficiency sreten Full Range 9 23rd November 2005 03:15 PM
Is it worth buying cheapy 15" driver or expensive 12"? VEC7OR Subwoofers 7 26th February 2005 10:09 PM


New To Site? Need Help?

All times are GMT. The time now is 04:18 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