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4 ohm amp connected to 8ohm speakers

I have a 4hm mini 2 channel home theatre; can I connect 8ohm speakers?

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Yes, that should be fine

Posted on Jun 05, 2008

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On my AVR 130 the output is switching off now and then. By pressing the small output channel button it is switched on again. Can someone tell me why it is switching off by itself ? Display says nothing...


Dear every channel in the pvr must have exact ohme so if your speakers are 8ohn you must change settings on the pvr to be 8ohm it's by stander 4 ohm so you can plug 2 speakers 8 parallel way

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How to connect microphone to Yamaha RX-V365 as a PA system.


Home-theatre receivers don't have microphone inputs. If you want to use the receiver as an amplifier in PA system, you need to use some kind of mic pre-amp or a mixer with mic inputs.
For PA mixer is needed anyway almost every time and all mixers have at least one mic input (with a pre-amp). Mixers have line-level output(s), which you can connect to the analog input of receiver.
Using receiver as an amp in PA has advantage that you have 5 channel amp. When using high sensitive PA speakers (as oposed to less sensitive Hi-fi home speakers), you can get good performance with the power rating of receiver. You could even use 2 separate channels for subwoofers and 2 channels for satelite speakers - but for that you would need a receiver with 5.1 analog inputs and special device called crossover which would divide the output from mixer into low-frequency signal and high-frequency signal which you would then connect to the front and rear analog inputs. But with RX-V365 you can use only 2 channels with analog input

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How do i connect 4ohm speakers to my 8ohm jvc receiver


You must connect two sets of speakers to do this.
You must connect them in series.
Meaning, you connect the positive of one to the positive (red) on that reciever. Then you connect the negetive of that speaker to the positive of another four ohm speaker, then run the negetive of that speaker to the negetive on the reciever. Just like if you were connecting batteries together.

Remember never to connect multiple speakers in paralell. (positive to positive and negetive to negetive) as this would make four ohm speakers into a two ohm configuration.

You can use speakers with higher ohm ratings in this setup. For instance, if you connect an eight ohm speaker in series with a four ohm this would give you 12 ohms. Which is also acceptable.

Feb 06, 2010 | JVC Audio Players & Recorders

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Overloads with volume a third od the way up,i have 2 12 inch cerwin vegas hooked to it


fan_of_tony,
There is not much info in your question to properly answer it but here are a few things.

1) The VSX-D307 is a home receiver that is rated for no less than a 4 ohm load. If you have two 12" 4 ohm CV subs on the same channel and they are in parallel, that would create a 1.7 ohm load which would easily cause the problem.

2) If you have one on each channel connected along with speakers that are for you mids and highs, the way they are connected could be reducing the resistance load the amp will see which would easily cause the problem.

3) If you have one on each channel and no other speakers the problem would be simply that your speakers can use more power than the amp can produce. Thus you are able to raise the volume of the amp passed it's maximum output which would cause the amp to clip and the amp will go into overload protection.

4) Your receiver has an 8 ohm rated amp. Which means it can run at 4 ohms but the amp will produce more power at lower volumes on the knob setting and will max out at lower levels than if you were using a 8 ohm speakers.

In short, CV's can use a lot of power and your receiver, regardless of advertised power levels, cannot give the speakers what you are looking for in sound levels. Buy a larger dedicated amp for the CV's as the clipping from your Pioneer receiver is doing damage to your CV's. Your speaker's can hear the clipping before your ears can so damage will start to occur before your ears can hear the clipping.

-Chris

Jan 20, 2010 | Pioneer VSX-D307 Receiver

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I have a Fisher RS-717 stereo receiver, amplifier. The speaker connections are channel A left & right and channel B left & right. The question is, can you connect speakers to just one channel...


Yes you can use either A or B without a problem. The restriction is when you have both A & B connected. In that case, the speakers MUST be a minimum of 8 Ohm impedence. Using either A or B, you can use speakers of 4 Ohms impedence.

Dan

Nov 24, 2009 | Fisher Audio Players & Recorders

1 Answer

Looking to connect 4 speakers to the surround back


Series the speakers, they may not get as much power as you would like, but your receiver will last longer.

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I have a Bose Accumass 6 system connected to an Onkyo amp running as a entertainment system on our boat. The quality is sufficient for what we need. The amp (a TX-DX575) has A&B speaker switches for a...


two 8 ohm speakers in parallel is 4 ohms.
if series 16 ohms.a high resistance will just produce less power.
too low a number can activate the speaker protect,or blow the amp.
radio shack sell wall mounted speaker controls,but 5 watt max.
the best thing is to run 2 amplifiers.one for in ,2 for out
speaker a and b on the amp parallel the speakers.
if you run 2 sets of 4ohm speakers,the amplifier load will be 2 ohms,and overheat the amp.4 8 ohm speakers,gives a 4 ohm load

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Denon AVR 883 Audio glitch


More than likely the protector circuit is getting activated... You can't go below 6 ohms on the surround back which means you need 12 ohm or higher speakers for outside (since the two outputs for surround back/zone2 are in parallel). As a simple diagnostic test, disconnect one speaker and see if the sound survives longer than 2 seconds.

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AVR 110 Harmon Kaedon


Looking in the manual (link below) I see that this receiver uses 8ohm speakers, check that your speakers are 8 ohms or more. I think that connecting 2 sets of speakers to the same output is the problem as when you connect speakers in parallel (i.e. just twisting both pairs of wires together) you effectively half the impedance. So if 2 sets of speakers of 8ohms are connected this way the result will be 4ohms which is too low and will cause the unit to go into standby. Try removing the additional front speakers & see if the fault persists. If it does then it is likely a fault in the wiring. http://www.harmankardon.com/product_support/support_detail.aspx?Region=USA&Country=US&Language=ENG&cat=&prod=AVR%20110&sjump=om&#active

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