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 12th June 2008, 11:24 PM   #1
diyAudio Member
 
Join Date: May 2004
Location: Cranbrook BC
Default Don't have software, will you run some #s for me?

I don't have the software and if I did I wouldn't know what to do with it!
I'm wondering if I could use these for subs in a regular cab pick-up in 1.0 c.f. each or less and get good bass from them...

Power handling: 90 watts RMS/130 watts max
Voice coil diameter: 2"
Impedance: 8 ohms
Frequency response: 26-6,000 Hz
SPL: 90 dB 1W/1m
Vas: 4.77 cu. ft.
Xmax: 3.0mm
Qms: 4.17 * Qes: .36
Qts: .34
Fs: 26 Hz

I appreciate any and all help greatly!
Brian
  Reply With Quote
Old 13th June 2008, 12:48 AM   #2
Ron E is offline Ron E  United States
diyAudio Member
 
Ron E's Avatar
 
Join Date: Jun 2002
Location: USA, MN
Just download WinISD or some other freeware.

3mm of Xmax is not a lot of excursion. These aren't really subs. They will make noise in your pickup, can't tell you how much without knowing diameter and other parameters...

Without running numbers in a calculator I can give you this estimate: in 1 cubic foot you will have a halfspace F3 ~60z or so, and Qts in the range of 0.8 or so. Your pickup's small cab will bring up the low end considerably, though - so the actual F3 will be lower..
__________________
Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. --Carl Sagan
Armaments, universal debt, and planned obsolescence--those are the three pillars of Western prosperity. Aldous Huxley
  Reply With Quote
Old 13th June 2008, 12:53 AM   #3
diyAudio Member
 
Join Date: May 2004
Location: Cranbrook BC
I run a Mac...
  Reply With Quote
Old 13th June 2008, 12:58 AM   #4
diyAudio Member
 
Join Date: May 2004
Location: Cranbrook BC
This is all I know...
http://www.partsexpress.com/pe/showd...number=290-088

Can you work with it?
Brian
  Reply With Quote
Old 13th June 2008, 01:20 AM   #5
Ron E is offline Ron E  United States
diyAudio Member
 
Ron E's Avatar
 
Join Date: Jun 2002
Location: USA, MN
a dump from my uber spreadsheet....

Anything you see about ports on the front page does not apply - this is a sealed box design of 1 cubic foot
F3 62.5 Hz and damped Qts of 0.74

First graph is SPL at 2.83 volts and Max SPL (90W)
second graph is power handling about 10-12 watts at low frequencies - due to low excursion
third graph is input impedance showing typical closed box impedance peak - no surprises here
fourth graph is excursion modeled at 75Watts/8 ohms input - note that it is beyond spec below about 100Hz - see the power handling graph.
5th graph is phase and group delay - nothing of note here.
Attached Files
File Type: pdf bass1.pdf (46.7 KB, 12 views)
__________________
Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. --Carl Sagan
Armaments, universal debt, and planned obsolescence--those are the three pillars of Western prosperity. Aldous Huxley
  Reply With Quote
Old 13th June 2008, 01:52 AM   #6
diyAudio Member
 
Join Date: May 2004
Location: Cranbrook BC
...not a suitable driver then?
  Reply With Quote
Old 13th June 2008, 01:59 AM   #7
Ron E is offline Ron E  United States
diyAudio Member
 
Ron E's Avatar
 
Join Date: Jun 2002
Location: USA, MN
...depends on what you want. I can imagine $40-80 more well spent somewhere else. Look at a DVC12 or DVC15 at the same website, or a "Quattro", as they call them.
__________________
Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. --Carl Sagan
Armaments, universal debt, and planned obsolescence--those are the three pillars of Western prosperity. Aldous Huxley
  Reply With Quote
Old 13th June 2008, 02:04 AM   #8
diyAudio Member
 
Join Date: May 2004
Location: Cranbrook BC
I'd like to thank you for taking the time to help me out. Thank you
Do you have any suggestions with paper cone and rubber surround?
I have 50 to 75 watts available per woofer if that matters.
Brian
  Reply With Quote
Old 13th June 2008, 10:59 AM   #9
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

It is a decent speaker 10" bass unit with good efficiency 90dB / 8 ohm.

It will work fine in a well stuffed 1cuft internal sealed box but it is not really a subwoofer.

Presumably a 4 ohm driver would be better for an in-car amplifier ?

Why paper cone ? for a subwoofer ?

/sreten.
  Reply With Quote
Old 13th June 2008, 04:07 PM   #10
diyAudio Member
 
Join Date: May 2004
Location: Cranbrook BC
Thanks sreten
I find that a paper coned drivers sound just sounds better to me...
Do have any diver suggestions?
Brian
  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
pc software rkreim Digital Source 8 10th December 2007 08:01 PM
Free software including DazyWeb Lab software ashok Everything Else 2 6th November 2005 11:31 AM
Software? ManUtd Tubes / Valves 3 29th October 2003 08:15 PM
software junglejuice Everything Else 6 1st December 2002 03:23 PM


New To Site? Need Help?

All times are GMT. The time now is 07:14 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