4 or 8 ohm wiring - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range

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 29th January 2006, 03:20 AM   #1
diyAudio Member
 
Join Date: Sep 2004
Location: Brisbane, Australia
Default 4 or 8 ohm wiring

Ive finally got around to trying different wiring layouts on my dual Tang Band W4-1052sas (http://www.greenie512.net/greenie512/html/wip.html ). Ive used bi-wires speaker sockets with each speaker connected separately to each pair (of the 4).

This allows parallel 4 ohms with the supplied jumpers or serial 8 ohm if I go positive to positive lower lower negative to upper positive upper negative negative out.

Have I got that correct? I have no measurement gear and the only advantage I can hear is the 4 ohm set up seems more dynamic at the same amp setting. But if I turn the cog up for 8 ohm all remains the same.

Im using Musical Fidelity amps so 4 or 8 ohm is no bother. Are there other advantages I am missing?? Im tempted to leave them as 4 ohm.
  Reply With Quote
Old 29th January 2006, 04:35 AM   #2
diyAudio Member
 
neutron7's Avatar
 
Join Date: Dec 2003
Location: Toronto Canada
it depends on your amplifier. in most cases it would be best to put them in series to get 8 ohms. if you put them in parallel the imedance is nomonal 2 ohms. maybe it will go as low as 1 ohm..maybe even less you need a VERY good amp and power supply to work with that.
  Reply With Quote
Old 29th January 2006, 05:19 AM   #3
westend is offline westend  United States
diyAudio Member
 
Join Date: Jul 2005
Location: shorewood
Greenie, I've been following your work as you have documented on your website and I'm vey impressed. Your cabinet building skills are par excellence. I would think that a guy who knows his tools would spring for a digital multimeter, though.
FYI, if you're paralleling two 4 ohm speakers the amp will see a 2 ohm load. If you wire them in series the amp will see an 8 ohm load. I don't know the specs on your amp but if both wiring configs give you the same sound I would leave them in the series configuration, just to be safe.
Keep up the good work. You raise the bar for my limited carpentry skills.
  Reply With Quote
Old 29th January 2006, 05:32 AM   #4
diyAudio Member
 
Join Date: Sep 2004
Location: Brisbane, Australia
Quote:
Originally posted by westend
Greenie, I've been following your work as you have documented on your website and I'm vey impressed. Your cabinet building skills are par excellence. I would think that a guy who knows his tools would spring for a digital multimeter, though.
FYI, if you're paralleling two 4 ohm speakers the amp will see a 2 ohm load. If you wire them in series the amp will see an 8 ohm load. I don't know the specs on your amp but if both wiring configs give you the same sound I would leave them in the series configuration, just to be safe.
Keep up the good work. You raise the bar for my limited carpentry skills.
Thanks for the rap - but picture can lie and you never see them of my many (many ...) botchs. But I must say I'm now getting to grips seriously with box making, especially with the more bits of kit I buy to help my relatively unskilled hands.

I stuggle quite a lot when I'm doing my own designs as my electrical knowledge is very limited and I have been avoiding the technical theory stuff out of laziness.

Will run speakers as 8 ohm units. This will be best as once veneered they'll end up on eBay at cost price to fund next project.
  Reply With Quote
Old 29th January 2006, 05:44 AM   #5
soongsc is offline soongsc  Taiwan
diyAudio Member
 
soongsc's Avatar
 
Join Date: Mar 2005
Location: Taiwan
Paralle configuration may sound a bit louder because taken the voltage gain being the same, the current is probably four times of that serial configuration, thus the power is four times the power. thus 6db difference. If your power amp is not build to support good 2ohm loading, then the first thing you will notice is lack of bass.
__________________
Hear the real thing!
  Reply With Quote
Old 29th January 2006, 07:13 PM   #6
diyAudio Member
 
Join Date: Jan 2006
Location: Mid-West
Howdy,

@2ohms the drivers will play at a higher SPL, however, this will also limit the "headroom" of your amplifier. It is much easier to drive an 8ohm load then a 2ohm load. Soncially there is no benifit other then the SPL output of a given driver (thus the design principle). But remember, as you change the load to the x-over (your speakers vrs. their wiring) so goes the responce curve of any given x-over, and hence the need for a DVOM that can test both capacitence (C) and mili-henery's (MH).
__________________
"Faith based engineering......now that's a new one."
  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
Wiring HT2 MTM ZoZat Multi-Way 4 15th May 2009 09:17 PM
Focusing on wiring cable for gainclone!!!Share ur experience in wiring cable.... thomgun_lc Chip Amps 38 31st August 2005 02:46 PM
I'm wiring my 4 channel 8 parallel LM4780 boards... check my wiring :) Audiophilenoob Chip Amps 9 16th August 2005 04:37 AM


New To Site? Need Help?

All times are GMT. The time now is 07:20 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