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Two main speakers, 8 ohms each for the stage, two smaller speakers for back of hall, of 6 ohms each. One rheastat available. How do I connect these to the amplifier, please?

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  • Nicholas Lemarr
    Nicholas Lemarr Mar 24, 2011

    Make/model for all devices?

  • Keith Brown
    Keith Brown Mar 24, 2011

    are these speakers part of a "house" system. or are these your speakers?

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  • Master
  • 3,018 Answers

You don't need to use the rheostat. If your receiver is 8 Ohms you can run all the speakers to the amp one speaker per channel just fine. Just leave the amplifier on 8 Ohms. It will be fine. Use the reviver gain and volume as you normally would.
Regards, Tony

Posted on Mar 24, 2011

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1 Answer

Speaker Imedance Matching - Sony STR DE 997 receiver with 120Watts - 8 ohms output with Benz 6 ohms..Tower Speakers


hi pawanh75,

thanks in advance for a very informative setup that you have.

Here are some of possible mods , only if you like and can DIY

( or have someone to help you )


• Using a 6 ohms impedance for an 8 ohm impedance amp clearly

denotes that it heats up the output stages.

(please forgive my very technical words)


• One way to lessen the heat is to install a blower .

Use a 220V blower on top of the receiver.

( air should be in going up direction ).


• Before I proceed further please indicate if having the speaker

connected and having a zero volume , and just letting the receiver

in an "On" state deliverately produce heat on the receiver, or just

when the volume is at medium to high level.


If it s running hot at zero level with speaker , please post.

If it is running hot even without speaker, post also


• It may also helps , if you have a powered subwoofer ( for the low's),

and set settings on your receiver to "small"


Let me know what you find to help you further.





Sep 11, 2012 | Sony STR-DE997 7.1 Channels Receiver

1 Answer

I'm using the Peavey XR 8600 with two EV Force i 25 speakers. My question is this, what is the difference between the two outputs on the Peavey? I naturally assumed one was left and one was right....


DO NOT parallel more than two 8 ohm speakers on either output and you will be OK. You could also use one speaker on each output. That would be easier on the equipment as it would be an 8 ohm load on each instead of a 4 ohm load on one of the internal amps. If you want to drive stage minitors, then you existing setup is fine and you will connect the monitors to the second speaker output and set the Mon switch as MAIN/MON.

Aug 23, 2011 | Peavey Xr 8600 8 Channel Powered Mixer

1 Answer

Pioneer vsx 515 overload and shuts down what can i do to fix this problem.


hi,
First of all remove all the speaker connections from the amplifier. After that power the amplifier and check the overload (protect) show or not . if not, then any of the speaker is damaged or you have to check the impedence of your receiver and speakers. It will be written on the rear side of both receiver and speakers in ohms. PIONEER recommend to connect 8 ohms speakers in to this AV receiver. If you are using 6 ohms speakers you have to do some setting in the AV receiver.For that do the following

1. With the receiver in standby, press STANDBY/ON while holding down the SPEAKER IMPEDANCE button.( Each time you do this, you switch between the impedance settings: )


SP 6 OHM - Use this setting if your speakers are rated at 6 Ohms

SP 8 OHM - Use this setting if your speakers are rated at 8 Ohms or more


You are not able to connect speakers with impedence bellow 6 Ohms with this receiver. Becuse the AV receivers impedence range is 6 - 16 Ohms.
If then also it shows protect you have to check the amplifiers hardware.

AV receivers shows protect mode , when there is a hardware fault in side it. Its a warning that some thing is wrong.
Normally AV receivers show this when any of the output amplifier get some problem. there are six amplifiers in this AV receiver. May occur when the output diver transistors of any of the amplifier become shorted. if the output transistor get shorted this will lead to flow of current through the speakers. To prevent this there is a protection circuit for each channels. One combined output of this protection circuit is connected to the system control. when the any of the output amplifier fails, the protection circuit detects it and switch of the speaker and sent data to the system control. when the system control get this data it will give a warning to the customer through display that PROTECT.
You have to check the amplifier.
for that you need digital multimeter,soledring iron screwdrivers etc
open the amplifier , then power it on. connect the negative terminal of the multimeter any where in the chase( metal body of the amplifer). then connect the positive terminal to all the output transistors emitter pin one by one . the voltage should be bellow 0.5V. If any of the emitter of the transistor shows voltage more than 0.5V., then that amplifier stage is faulty. Remove the transistors and check it. if it is shot then replace with a new one.
after replacing the transistors do not power up the amplifier directly from the main. You have to put a bulb of 60 watts in serial.
You can do this easily remove the mains fuse. put the bulb in a holder. now you have to wire from the holder. connect one of it to the one end of the fuse holder and the other wire to the other end of the fuse holder. Why using a bulb is, if there is any further problem in the amplifier stage on which the transistors replaced, there is a possibility of the new transistor get damage. if we use a bulb in serial with its mains supply ,when any overload in the amplifier occur the bulb will drop the current, by lighting itself.
After connecting the bulb in serious power on the amplifier. watch the bulb. It should light for one or two second and go dim . if so check the display, is there is protect mode is on or not . if not and come back to normal operation ,then remove the power , remove the bulb insert fuse and check
connect the power and check.
If the bulb shows bright light then there is some component also faulty in the same amplifier. after removing the power you have to check again the amplifier stage of which the transistor is replaced, for any other faulty components.
ok

Jul 27, 2011 | Pioneer VSX-515 Receiver

1 Answer

I just purchased a yamaha RX-V767 receiver. I have a polk surround sound speaker system 5.1 that have an impededance of 8 ohms. The receiver has an impedece adjustment knob on it. would it be safe to...


No, you don't want to do that. The Ohm output on the amplifier must match the speakers. Run 8 Ohm speakers on 8 Ohm and run all your speakers on the same impedance (Ohms). Your gonna burn your amplifier up if you run different impedances.

Mar 24, 2011 | Yamaha NS-A60X Main / Stereo Speaker

1 Answer

Pioneer sx-255r can i connect 6 - 8 ohms


Yes, you can use them but be careful. These are not necessarily robust speakers. If they sound strained, back off.

Mar 07, 2011 | Pioneer SX-255R Receiver

2 Answers

6 ohn wharfedale speakers on an 8 ohm TEAC amp (both old) - will that work


Yes. Most if not all speakers have impedances which vary with frequency and are rated at a nominal or average impedance. So a manufacturer who rates their speakers at 6 ohms may be more honest or chooses to quote it at a specific frequency. So a nominal 8 ohm speaker may actually measure 4 ohms at 100Hz and 12 ohms at 500Hz but averages somewhere nearer 8 ohms. It is normal for most speaker manufacturers to simplify their ratings so speakers which average at say 6 ohms would be categorised as 8 ohm, and 4.9 ohm averaged speakers as 4 ohms.

As a point of interest - some amplifiers are specified as providing their maximum power at impedances of 6 ohms, and there fore some speaker makers (including those made by same manufacurer as amplifier) will rate their speakers at 6 ohms so they appear more compatible.

Mar 05, 2010 | Audio Players & Recorders

1 Answer

Can I use 6 ohm speakers with 8 ohm system?


Probably OK, depends on the amplifier design. You have to be careful, especially at higher volume, the lower impedance will allow too much current to flow and burn up the amplifier.

Feb 06, 2010 | Yamaha NS-A60X Main / Stereo Speaker

2 Answers

I have just been given a pair of aiwa speakers sx-fz1800,there is two cables comming out of the back,which one do i use.


One pair goes to bigger speaker (woofer) and other pair for smaller speakers in box, to get full frequency response, you need to hook both cables.

Sep 10, 2009 | Audio Players & Recorders

1 Answer

Bose speaker 151


Hi

I checked in the specs of the manual here. page 6. They quote it as being suitable for 4-8 ohm AMPLIFIERS. but do not mention the actual impedance. I would expect from that that the speakers must be close to 8 ohms, as you they would not advise you to connect a 4 ohm speaker to an 8 ohm output stage, as likely damage could result. If you had a multi meter, you could do a DC resistance check of the speaker, this is generally very close to the impedance. happy to talk to you more about it.

regards
robotek

Nov 04, 2008 | Bose Lifestyle SA-2 2-Channel Amplifier

1 Answer

Need help


Have you connected an extra pair of speakers?. (Thereby loading the amp stage beyond it's capacity)
Are the speakers connected to the unit the original ones the system came with or different? ( Speaker impedance, usually displayed at the back of the speaker cabinet must not be less than amp's specifications....6 ohms, 8 ohms)
If you're driving the unit excessively you're lucky this piece is equipped with protect mode, else your speakers and amp would have been fried by now.
One last possibility comes to mind: High volume causes vibration causing loosely fitted mains plug to rattle in wall socket calling "protect" due to improper feed voltage. Move the unit to another wall socket and ensure a tight fit into mains receptacle.

May 20, 2008 | Sony STR-DE197 Receiver

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