Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Need 4ohm load
Need 4ohm load
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 31st May 2004, 03:20 PM   #1
clayton is offline clayton  United States
diyAudio Member
 
Join Date: Apr 2004
Location: LA.
Question Need 4ohm load

I have 2 Fosgate HE12's 8ohms each. I want to add 2 more 12's. I want to keep amp bridged mono. I am running a punch 500.2 amp. If I got 1 that is 4ohm & 1 that is 8ohm would running them in series parralel. give me a 4ohm load. Any help would be great.
  Reply With Quote
Old 31st May 2004, 04:20 PM   #2
Bill Fitzpatrick is offline Bill Fitzpatrick  United States
diyAudio Member
 
Bill Fitzpatrick's Avatar
 
Join Date: Jun 2001
Location: Eugene, OR
You have no choice but to get 8 ohm woofers and wire the 4 in series-parallel for a total load of 8 ohms. Any other arrangement will not equally divide the power between all 4 woofers.
  Reply With Quote
Old 31st May 2004, 04:39 PM   #3
clayton is offline clayton  United States
diyAudio Member
 
Join Date: Apr 2004
Location: LA.
Thanks for the input. I geuss I will just have to sell the 2 that I have & buy 4 4ohm woofers. I want to get the most out of this amp as possible. If you know of any other way to get more please let me know
  Reply With Quote
Old 31st May 2004, 06:50 PM   #4
sreten is offline sreten  United Kingdom
R.I.P.
 
Join Date: Nov 2003
Location: Brighton UK
8 ohm is very unusual for a car subwoofer.

If they are dual 4 ohm you can simply use one voice coil of
each driver without significantly affecting power handling.

sreten.
  Reply With Quote
Old 31st May 2004, 07:41 PM   #5
clayton is offline clayton  United States
diyAudio Member
 
Join Date: Apr 2004
Location: LA.
They are single voice coil. I had orignally planned on using just the 2. But decided I wanted more. 8ohm is used in car audio alot.
Especially when using just 2 subs bridgeing a stereo amp mono.
  Reply With Quote
Old 31st May 2004, 10:58 PM   #6
sreten is offline sreten  United Kingdom
R.I.P.
 
Join Date: Nov 2003
Location: Brighton UK
Well are they sealed or vented ?

Vented will need the same volume for 2 drivers as 4 sealed drivers
but 2 drivers vented will manage more low bass than 4 sealed, and
~ double the amount of low bass juice the drivers can take.

sreten.
  Reply With Quote
Old 31st May 2004, 11:25 PM   #7
clayton is offline clayton  United States
diyAudio Member
 
Join Date: Apr 2004
Location: LA.
They are sealed. I have not had any luck building vented enclosures. If you have diagrahm of a vented enclosure that would work with these subs that would be great.
  Reply With Quote

Reply


Need 4ohm loadHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Power load, dummy load (pic) luka Power Supplies 43 9th February 2012 02:50 PM
Dynamic load line analysis using music and speaker load Michael Koster Tubes / Valves 0 7th March 2008 08:47 PM
1 sub - DVC 4ohm each. What amp? big_kahunah Subwoofers 0 27th December 2006 12:22 AM
4ohm or 2 ohm sub on a JL 500/1? lukemc11 Car Audio 3 25th October 2004 12:25 AM
2 lm3886 for 120w in 4ohm load audioloud Chip Amps 10 29th June 2004 07:40 PM


New To Site? Need Help?

All times are GMT. The time now is 11:16 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki