6 ohm speakers on an amp?

[walmat]

I have a harman kardon 254 avr and I want to update my 5 speakers with front and rear imageb25 psb's and the center psb c40 but I'm not sure if these 6ohm speakers will work safely with my amp. The amp specs only mention 8 ohm speakers.
Can someone shed some light on this please?
Thank you

[rded]

Originally Posted by walmat

I have a harman kardon 254 avr and I want to update my 5 speakers with front and rear imageb25 psb's and the center psb c40 but I'm not sure if these 6ohm speakers will work safely with my amp. The amp specs only mention 8 ohm speakers.
Can someone shed some light on this please?
Thank you

My answer is no. You might blow out your speakers and receiver especially at loud volumes. You have 3 options 1) Get a separate amplifier since your receiver has pre-outs anyway 2) Get an new receiver that can handle 4-6 ohm loads 3) get a new receiver/pre-pro and an amplifier

[Big Daddy]

PSB speakers are excellent and I recommend them highly.

As a general rule, you should not use a receiver on low impedance speakers. However, if you do not turn the volume to a very high level, you should be ok. Check the receiver periodically to make sure it is not becoming too hot. Eventually, you should upgrade your receiver to one that can handle low impedance speakers or even better, you should use an external amplifier to run your speakers and use your receiver as a pre-amp. A few members use this option. You need pre-outs for all the channels on your receiver to be able to use an external amp.

Read Impedance and Sensitivity of a Speaker. This question was discussed in the thread. There are other threads where this same topic was discussed.

https://forum.blu-ray.com/showthread.php?t=85273
https://forum.blu-ray.com/showthread.php?t=84651

[rded]

Originally Posted by Big Daddy

As a general rule, you should not use a receiver on low impedance speakers.

Big Daddy, I use a receiver to drive low impedance speakers

[Big Daddy]

Originally Posted by rded

Big Daddy, I use a receiver to drive low impedance speakers

Your receiver doesn't count. It costs too much money.

[rded]

Originally Posted by Big Daddy

Your receiver doesn't count. It costs too much money.

Just kidding!!!

[Opips2]

I know how to trick, a home theatre receiver has 6 impedance all channel 60 watts at 6 ohm
Panasonic SC-HT900. don't use a loudspeaker from setup home theatre receiver.

Other a loudspeaker 100 watts at 8 ohm normal to 4ohm min. u can high volume. Awesome sound and crisp sound!

it's secret!

[daronk]

Originally Posted by Big Daddy

PSB speakers are excellent and I recommend them highly.

As a general rule, you should not use a receiver on low impedance speakers. However, if you do not turn the volume to a very high level, you should be ok. Check the receiver periodically to make sure it is not becoming too hot. Eventually, you should upgrade your receiver to one that can handle low impedance speakers or even better, you should use an external amplifier to run your speakers and use your receiver as a pre-amp. A few members use this option. You need pre-outs for all the channels on your receiver to be able to use an external amp.

Read Impedance and Sensitivity of a Speaker. This question was discussed in the thread. There are other threads where this same topic was discussed.

https://forum.blu-ray.com/showthread.php?t=85273
https://forum.blu-ray.com/showthread.php?t=84651

Well, maybe. On the other hand, apparently lots of "8 ohm" speakers aren't really 8 ohm. Check out this link if you read any German.

http://www.nubert.de/downloads/verstaerker-impedanz.pdf

If your receiver or amp is a recent model, you shouldn't worry about it.

[Squozen]

I have run 4- and 6-ohm speakers on all of my amps without ever having issues, but you should definitely spend thousands of dollars to fix this important problem.

[Blu-Dog]

Originally Posted by Squozen

I have run 4- and 6-ohm speakers on all of my amps without ever having issues, but you should definitely spend thousands of dollars to fix this important problem.

I have run 4 and 6 ohm speakers on all of my amps, and have had multiple issues.

Plan before spending a dime. What you're doing is not only advising this fellow not to be careful with his current investment; you're advising people who haven't spent "thousands of dollars to fix this important problem" because they don't have anything, to go out and put their money at risk.

There are plenty of receiver manufacturers who clearly advise that low ohm speakers can damage either the receiver, or the speaker. It is a warranty-voiding situation. It also introduces a higher level of distortion to the sound on most units.

[Johnny Vinyl]

Originally Posted by Blu-Dog

I have run 4 and 6 ohm speakers on all of my amps, and have had multiple issues.

Plan before spending a dime. What you're doing is not only advising this fellow not to be careful with his current investment; you're advising people who haven't spent "thousands of dollars to fix this important problem" because they don't have anything, to go out and put their money at risk.

There are plenty of receiver manufacturers who clearly advise that low ohm speakers can damage either the receiver, or the speaker. It is a warranty-voiding situation. It also introduces a higher level of distortion to the sound on most units.

Ditto! If a receiver doesn't specifically indicate it can handle 4-ohm and/or 6-ohm loads, then DONT mess with it.

John

[rded]

A lot of receiver manufactures especially the japanese ones sugar coat their specs and make people belive that their recivers are really poweful. A lot of times when they put 100w they mean 100 w to 1 or 2 channels at peak power and when you run low impedence speakers on them, you could literally blow the receiver and/or speaker up! Ohms and impedence were not really in my book until I started looking at quality speakers and found out about the harsh truth. It really requires good current, not just power to make your speakers sing.

[walmat]

Thanks for all the responses but it sounds like I should just contact h/k directly and ask them about it.

[Johnny Vinyl]

Originally Posted by walmat

Thanks for all the responses but it sounds like I should just contact h/k directly and ask them about it.

That is always a good idea....the know the whole horse's mouth issue!

John

[Big Daddy]

Originally Posted by daronk

Well, maybe. On the other hand, apparently lots of "8 ohm" speakers aren't really 8 ohm. Check out this link if you read any German.

http://www.nubert.de/downloads/verstaerker-impedanz.pdf

If your receiver or amp is a recent model, you shouldn't worry about it.

I believe you should have read my link on Impedance and Sensitivity of a Speaker. You would have realized that it is not that lots of speakers are not really 8 Ohm. That is true about all speakers. The 8 Ohm figure is just a nominal (average) figure. All speaker impedances vary with frequency. A typical 8 Ohm speaker's impedance may go up to 50 Ohm and drop to 2 Ohm, depending on the frequency.