Setup 4 speakers on a stereo, impedance ? - AVS Forum | Home Theater Discussions And Reviews
Baselworld is only a few weeks away. Getting the latest news is easy, Click Here for info on how to join the Watchuseek.com newsletter list. Follow our team for updates featuring event coverage, new product unveilings, watch industry news & more!


Forum Jump: 
 
Thread Tools
post #1 of 7 Old 09-18-2013, 01:21 PM - Thread Starter
Newbie
 
victorml's Avatar
 
Join Date: Sep 2013
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hi everyone,

Victor, 24 from France.

I have a quick question that has probably been asked thousands of times, and i've looked online but I still can't quite figure out if I can do what I wanna do.

I have a stereo that came with 2 speakers.

On the back of the stereo, impedance is, i quote : 4-16ohm.

I have two 3 ohm Speakers and 2 8ohm speakers.

Question : is there a way I can have all those speakers plugged in the stereo ?

Thanks in advance,

Victor

Edit : no idea why I said I was 24, I'm 26.
victorml is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 09-18-2013, 02:56 PM
FMW
AVS Special Member
 
FMW's Avatar
 
Join Date: Jun 2007
Posts: 6,464
Mentioned: 5 Post(s)
Tagged: 1 Thread(s)
Quoted: 1067 Post(s)
Liked: 1240
It's alright. I'm nearly 70 and I try to forget my age all the time. Putting two speakers on the same output will halve the impedance. So you would end up with a 4 ohm speaker and a 1 1/2 ohm speaker. Will that work? Maybe. Try it. Don't apply much power and see if the amplifier overheats. If it doesn't you will probably be OK.
FMW is online now  
post #3 of 7 Old 09-18-2013, 03:42 PM - Thread Starter
Newbie
 
victorml's Avatar
 
Join Date: Sep 2013
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Thanks for the reply.

So :

On the left output, I plug in 2 speakers, one 8ohm and one 3 ohm, so impedance on the left is 4+1 1/2 = 5.5, which is in the range of my stereo (4 to 16 ohm).

So it should work. Unless calculations should be made per speaker instead of what I jus did, per output......

I'll try tomorrow, speaker by speaker...slowly, gently...
victorml is offline  
post #4 of 7 Old 09-18-2013, 03:47 PM
 
SAM64's Avatar
 
Join Date: Apr 2011
Posts: 1,592
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Liked: 74
Two 8 Ohm speakers in parallel will result in a 4 Ohm load.
Two 3 Ohm speakers in parallel results in a 1.5 Ohm load.
An 8 and a 3 in parallel results in a 2.2 Ohm load.
Safest bet is to put an 8 and a 3 in series for an 11 Ohm load.
SAM64 is offline  
post #5 of 7 Old 09-18-2013, 03:50 PM - Thread Starter
Newbie
 
victorml's Avatar
 
Join Date: Sep 2013
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Alright thanks !

Just to be sure, in series = plug 2 reds in the red socket, and 2 blacks in the black socket. And same on the right output. Correct ?
victorml is offline  
post #6 of 7 Old 09-18-2013, 03:54 PM
 
SAM64's Avatar
 
Join Date: Apr 2011
Posts: 1,592
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Liked: 74
No.
In series, plug the red from one 8 Ohm speaker into the red socket, plug the black from one 3 Ohm speaker into the black socket, connect the black form the 8 Ohm speaker to the red on the 3 Ohm speaker.
SAM64 is offline  
post #7 of 7 Old 09-22-2013, 03:45 PM - Thread Starter
Newbie
 
victorml's Avatar
 
Join Date: Sep 2013
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Just did that, works fine. Good power, no overheating after 5-6 hours a mid volume. Thanks thanks guys
victorml is offline  
Sponsored Links
Advertisement
 
Reply Audio Theory, Setup, and Chat

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

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