4-8 ohm Speakers same receiver/amp
Ricardo
Posts: 10,636
I made a search on the subject and the closest I got is this:
http://www.polkaudio.com/forums/showthread.php?t=2667&highlight=mix+ohm
which talks about a receiver with an impedance switch.
How about receivers/amps that do not have this switch? Specifically, is there any risk to the speakers or amp in doing this for:
1.-HK 3480
2.-Adcom 535
Both have two speakers outputs; thinking in connecting 4 ohm in one and 8 ohm in the other. Only one output would be used. (There is always a possibility though of mistakenly keeping both..)
Thanks.
http://www.polkaudio.com/forums/showthread.php?t=2667&highlight=mix+ohm
which talks about a receiver with an impedance switch.
How about receivers/amps that do not have this switch? Specifically, is there any risk to the speakers or amp in doing this for:
1.-HK 3480
2.-Adcom 535
Both have two speakers outputs; thinking in connecting 4 ohm in one and 8 ohm in the other. Only one output would be used. (There is always a possibility though of mistakenly keeping both..)
Thanks.
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***\\\\\........................... My Audio Journey ............................./////***
2008 & 2010 Football Pool WINNER
SOPA
Thank God for different opinions. Imagine the world if we all wanted the same woman
Post edited by Ricardo on
Comments
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So you have two sets of speakers, one 4 and one 8 ohm, and you want to put them on the A and B channels of your receiver?
Well I definitely wouldn't run them at the same time given that scenario, but I don't see any reason why you couldn't do what you're saying and just listen to one set of speakers at a time. I suppose if you had A and B both accidentally selected you wouldn't blow anything up - but I wouldn't try listening like that for any real amount of time.
P.S. - I don't know why you can't run both simultaneously, just doesn't sound right to me and it's not something I'd want to do. -
Thanks; one of the speakers set would be in the deck; the other one inside. I plan to use the adcom, though might experiment with the HK..have heard good things about that receiver._________________________________________________
***\\\\\........................... My Audio Journey ............................./////***
2008 & 2010 Football Pool WINNER
SOPAThank God for different opinions. Imagine the world if we all wanted the same woman -
HTrookie wrote:Thanks; one of the speakers set would be in the deck; the other one inside. I plan to use the adcom, though might experiment with the HK..have heard good things about that receiver.
The Adcom would have no trouble running both at once at moderate levels. I not 100% sure but almost all units with speaker switching capabilities have the swtich wired in series so it doesn't halve the impedence like running them in parallel would. So I wouldn't worry.
Not sure about the impedence switch...never owned any equipment with that function. Adcom's have no trouble running 4 or even 2 ohm loads. I'm sure the HK would work well also.
Fwiw
H9"Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul! -
While H9 is right:almost all units with speaker switching capabilities have the swtich wired in series
Labrat -
heiney9 wrote:Not sure about the impedance switch...never owned any equipment with that function. Adcom's have no trouble running 4 or even 2 ohm loads. I'm sure the HK would work well also.
I was told to never use the impedance switch on a receiver. It's a requirement from UL that enables manufacturers to say a lower line (lower cost) amp can handle 4ohm speaks. Basically it cuts down the amp so it doesn't overheat...
Most HKs can handle 4ohm speaks but they can't advertise it because of the above mentioned electric standards set by UL for home use. (this is what an HK rep told me).Receiver: harmankardon AVR235
Mains: polk R30
Center: polk CSi3
Rear Surrounds: polk R20
Subwoofer: polk PSW404
DVD: Panasonic DVD-S29