Wanted: efficient sub 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 26th February 2003, 07:40 AM   #1
diyAudio Member
 
mikee12345's Avatar
 
Join Date: Nov 2002
Location: NZ
Unhappy Wanted: efficient sub driver

hi im having trouble finding a driver like this:

help me theres no decent speakers in newzealand!!

i have a 100watt 4ohm sub amp.

efficiency -----

94db/1watt approx (the hardest one to find)
Fs=30hz or so
Q<0.35 (max, i dont want peaky response)
4ohm

100-140litre sized ported box ok
Excursion 7mm
12inch


(im in new zealand also making US drivers expensive to ship generaly euro ones are cheaper)
  Reply With Quote
Old 26th February 2003, 02:22 PM   #2
SY is offline SY  United States
diyAudio Moderator
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 1
Why not just parallel a couple of 8 ohm drivers with a 90-91 dB sensitivity? A pair of 12 inchers (30 cm) will give you plenty of output.
__________________
The more you pay for it, the less inclined you are to doubt it.- George Smiley
  Reply With Quote
Old 26th February 2003, 06:46 PM   #3
diyAudio Member
 
Nappylady's Avatar
 
Join Date: Feb 2003
Location: Salt Lake City
Send a message via ICQ to Nappylady Send a message via AIM to Nappylady Send a message via MSN to Nappylady Send a message via Yahoo to Nappylady
Default 12" 96 dB

Yes, it seems to be really efficient to 96 dB.

http://www.speakerhole.com/product.cfm?ProductID=1167

T/S parameters?

www.madisonspeakers.com

(skip the intro, it's dumb) products -> woofers (at the bottom) -> Warrior 12

All the parameters are in a difficult-to-read chart, but they're all there.

Will this do what you need?
  Reply With Quote
Old 27th February 2003, 12:37 AM   #4
diyAudio Member
 
mikee12345's Avatar
 
Join Date: Nov 2002
Location: NZ
Default thanks..

IF i could find 2 decent 12s that would work yes i could wire them in parallel

but that just leaves me probs
in Oz i can get a 12inch peerless XLS for 300$ ea
so 2 of those is 600$ + i cant tune low less i have PRs

(ports get toooo long for 25hz)

i can get a shiva for 330$

thats about it

my only other choice is

cerwin vega 12
93db(probably more like 91db)
19mmexcursion
Q=0.33
Fs=23hz
Vas=85litre

i wud buy this but its car audio and 100watts is hardly enuf
  Reply With Quote
Old 27th February 2003, 01:16 AM   #5
JBL is offline JBL  Canada
diyAudio Member
 
JBL's Avatar
 
Join Date: Aug 2001
Location: Canada, N.-B.
Send a message via ICQ to JBL
Focal was claiming that one of their sub was having a 101db/w efficiency.

It'S in the polykevlar series I think and wasn't given for free!!!
__________________
Jonathan Blanchard (J.Bl.)
---Nothing is impossible---
  Reply With Quote
Old 27th February 2003, 08:33 AM   #6
diyAudio Member
 
Join Date: Jan 2002
Location: Wellington, New Zealand
you could try http://www.jaycar.co.nz for an NZ based distributor. Although they have drivers - they are "no name" and limited specs published (eg. I couldn't find an Xmax for any one of them).

Their most expensive 12" is NZD$300. You are better off getting that Shiva or Peerless for the money.

Jaycar also do have plate amps if you need one (I bought a Redgum amp instead - before their prices went up 33%!!!!)

I got my Shiva from John Woodhead @ Acoustic Concepts http://www.acousticconcepts.com.au . Very good and efficient service. They only support a T/T (telegrapghic transfer) though for payment (no credit card) for convenience. total cost was about NZD$360. Remember you need to pay shipping (about $45 from Aus) and your bank (mine is BNZ) will charge about $25 for the T/T.

Dave.
  Reply With Quote
Old 27th February 2003, 06:05 PM   #7
diyAudio Member
 
Join Date: Feb 2001
Location: Mars
Default Re: Wanted: efficient sub driver

Quote:
Originally posted by mikee12345
hi im having trouble finding a driver like this:

help me theres no decent speakers in newzealand!!

i have a 100watt 4ohm sub amp.

efficiency -----

94db/1watt approx (the hardest one to find)
Fs=30hz or so
Q&lt;0.35 (max, i dont want peaky response)
4ohm

100-140litre sized ported box ok
Excursion 7mm
12inch


(im in new zealand also making US drivers expensive to ship generaly euro ones are cheaper)

http://www.lambdacoustics.com


Any TD12 variant would be nice, except TD12M.

ie, TD12X

4 ohm model = 97db sens.
fs = 34hz
Qts = .27
Le = 0.3 mH
Linear xmax = 10mm
mech xmax = 18mm

http://www.lambdacoustics.com/drivers/TD12X.html

TD series is awesome. These are wide band drivers!
...Able to play full range if need be, if not, they also
work great as a sub as long as you don't exceed
mechanical limits.

My application is low pass 300hz - 500hz and I chose
TD15H for my project.
  Reply With Quote
Old 27th February 2003, 09:36 PM   #8
diyAudio Member
 
mikee12345's Avatar
 
Join Date: Nov 2002
Location: NZ
Default efficent subs

re: the jaycar stuff yeh i noticed the speaker i want (200$) has no xmax figures,, so ive emailed them :P

shiva is ok but again, 88db or so

that td12 from lambda isnt bad! quite suited to what i want!


thanks ppl i may go for a jaycar response if it has enuf excursion
if not.. il go for somthing else :P

id rather buy 1 jaycar 12 than 2 warehouse subs

i heard they arent that bad,the 12inch reactor subs but i wudnt use it in the house.

thanks!
  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
Efficient Single Driver Bookshelf Speakers pjanda1 Swap Meet 2 7th July 2009 10:43 PM
WANTED: input on efficient party speakers. xstephanx Multi-Way 26 15th February 2005 09:48 PM
Key to VERY efficient Ribbon driver! dhenryp Planars & Exotics 2 3rd February 2005 04:49 PM
high efficient low midrange driver maik Multi-Way 3 27th May 2003 03:27 PM


New To Site? Need Help?

All times are GMT. The time now is 05:46 PM.


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