KLH R3100 what is speaker impedance for this unit?

Without knowing what they're hooked up too.. SOUNDS like your uder powering them, OR over powering them. Look at the back of the speakers the wattage is what your looking for, look at your amp, example: 1000w speaker running on 50w amp = not good.

The correct way would be to hook only one speaker to the powered outputs and use PRE-OUT outputs to connect separate amplifier (or active speakers).

For 2 speakers to work connected to the same powered output of receiver, their impedance would need to be high enough. Yamaha receivers officially support impedance >= 4 ohm for front speakers. If you would connect 2 different 8 ohm speakers, the combined impedance could be theoreticcaly 4 ohm, but that depends on many parameters. On low volumes it should work, but could overload the receiver if used for louder volumes.

Also note that the impedance is a function of frequency (specific to every speaker), so for different frequencies the power from receiver would be devided differently between the speakers and the sound would not be good.

Hello
Output impedence of 95% of Herman Kardon sets are desighed for 6 Ohms speaker. There is an output speaker sensor circutary it it which sense the impedence of the connected speaker. it is a built in feedback circuit and is ment for protection for both speakers and power amplifier section of the amp. If you connect a 4 Ohms speaker, the set will sense it and there is a chance to get it tripped as you increase the volume. Just connect and check. Advance the volume of the set very gently. If tripping occurs or it just cut off as soon as switch ON, never connect it again. OK.

check your speaker impedance by multimeter normally speaker ohms range from 8,6 or 4 ohms see your speaker spec. possibility speaker short, so impedance become too low when driving with strong bass become over current and cut out. if this is the problem the only solution is change the speaker only.

What speakers you have connected? This receiver supports only 6 and 8 ohm speakers (not 4 ohm). Also check if the ohm settings are correctly set in Advanced Setup (in standby press on the front panel STANDBY while holding STRAIGHT button). In this menu check the setting SP IMP. (speaker impedance) if it maches your speakers (6 or 8 ohm).
Disconnect all inputs and also all speakers. With nothing connected, try to increase the volume. If it still will power off, the unit is probably faulty and should be repaired.
If it does turn off only with speakers connected, check the speaker wires and the speakers, the problem will be there.

Powering off usually points to issues with speaker setup. You should read pages 42 and 96 of the 606 manual.

Page 42 covers impedence settings. Check your impedence settings for your speakers. The 606 handles speakers from 4 to 16 ohms. There are two impedence settings on the 606 - 4 ohms and 6 ohms. Set to 4 ohms if your speakers are 4 ohms or more but less than 6 ohms. Set to 6 ohms if your speakers sit between 6 and 16 ohms. Incorrect settings can result in the 606 going into power protection after prolonged use or at higher volume.

Page 96 covers testing for unexpected power protection. You should switch off your AV at source and leave for an hour. Disconnect all cables to speakers and other peripherals (TV, DVD et al). After an hour turn on AV and turn volume to MAX, If the AV remains on, turn down volume to min, switch off AV and reconnect all devices. Make sure the speaker cables are properly connected and that no bare wiring is exposed.

Once you have done this switch on the AV and turn to volume to MAX. If the AV stays on then problem solved. If the AV switches off then you should contact your supplier.

you may be using an equalizer? try to pop-up the volume with all tone controls in flat mode. see if it still cuts off. if this is the first time youencounter this then something must be wroing with either your speakers or your amp. unless your ventilation is not good enoughg, you can also try placing a blower on top of your unit to cool it down

You may have speakers of an incorrect impedance attached to the unit since the problem occurs when audio signal level is increased and the current goes up.The unit is shutting down to prevent damage. I would check the speaker connections and make sure that the speakers impedance are matched for the unit you are using.

Try pushing the speaker button under the power button on the front.

Return the unit to where you purchased it and get a new one.