Query regd Speakers in Parallel

[RaahulT]

Hello friends.
I have presently set up 3.1 speakers on my marantz avr. I have 4 x10w speakers lying idle which I am curiously looking for possibility to install together as overhead speakers ppwered through one channel on AVR. I have enclosed the schematic for the same. Is it possible to safely run it?

 

[jls001]

The effective resistance of four 4 Ohm speakers in parallel is 1 Ohm. This is extremely low resistance for an amplifier to drive. The amplifier needs to be able to drive four times the power it can output to a 4 Ohm load. Not safe to do.

 

[Krishroy2004]

Hello friends.
I have presently set up 3.1 speakers on my marantz avr. I have 4 x10w speakers lying idle which I am curiously looking for possibility to install together as overhead speakers ppwered through one channel on AVR. I have enclosed the schematic for the same. Is it possible to safely run it?View attachment 36316

You didn't mention the speaker impedance,
Why you want to use all speakers in one channel?

 

[Naveenbnc]

you will need 2 channels for overhead right ?
Whats ur speaker impedance ??
You need to try combination of series&parallel to reach required impedance.

 

[RaahulT]

The effective resistance of four 4 Ohm speakers in parallel is 1 Ohm. This is extremely low resistance for an amplifier to drive. The amplifier needs to be able to drive four times the power it can output to a 4 Ohm load. Not safe to do.

Thanks for the reply.
Putting them in series will also be a problem.?

 

[RaahulT]

You didn't mention the speaker impedance,
Why you want to use all speakers in one channel?

Speaker impedance is 4.ohm.
I was planning them in one channel as putting them separately will definitely damage 10w speakers on higher volume as my other speakers are 100w+.

 

[RaahulT]

you will need 2 channels for overhead right ?
Whats ur speaker impedance ??
You need to try combination of series&parallel to reach required impedance.

Speaker impedance is 4ohm.
If I use two channels x 2 (10w) speakers each, them I think I will need to restrict the volume output on those two channels. I dont know how much to set it at.

 

[efernand1]

Hi

I am sure there are many online articles and calculators you can refer to to arrive at a suitable impedance for hooking up these speakers.....here is one such....

Speakers in Parallel Calculator - Geoff the Grey Geek

Calculator to determine the total impedance of 2, 3 or 4 speakers in parallel. Also calculates how the power is shared between the speakers.

geoffthegreygeek.com

How to Connect 2 Speakers to 1 Amplifier - Geoff the Grey Geek

Know how and when to connect 2 speakers in parallel or series. Practical examples are discussed along with an explanation of why and when

geoffthegreygeek.com

 

[efernand1]

Speaker impedance is 4ohm.
If I use two channels x 2 (10w) speakers each, them I think I will need to restrict the volume output on those two channels. I dont know how much to set it at.

Please share a pic of these speakers front and back.....so we can get some idea and suggest accordingly

 

[RaahulT]

Please share a pic of these speakers front and back.....so we can get some idea and suggest accordingly

After going through those articles and as per suggestions by other FMs, I am nearing a conclusion that 2x10w speakers in series on 2 channels should give me reasonable opportunity to see if those speakers can be used with avr.
I will check and update here.
Front/Backside of speakers nothing written. Datasheet attached.
Can you advice what should be starting volume on these speakers.

 

[efernand1]

These seem to be computer type of speakers......these may just burn out during continuous use......audyssey may set them at some conservative levels...you never know....

If i was you....would check OLX for some compatible speaker within budget and use the same....

 

[MaSh]

After going through those articles and as per suggestions by other FMs, I am nearing a conclusion that 2x10w speakers in series on 2 channels should give me reasonable opportunity to see if those speakers can be used with avr.
I will check and update here.
Front/Backside of speakers nothing written. Datasheet attached.
Can you advice what should be starting volume on these speakers.

Connect 2 speakers in series per channel to get an impedance of 8ohms on the channel. That should be well within the receivers capability.

Running in parallel would mean an impedance of 4ohms on the channel for 2 drivers. That's on the high side and could lead to heating.

MaSh

 

[arj]

The effective resistance of four 4 Ohm speakers in parallel is 1 Ohm. This is extremely low resistance for an amplifier to drive. The amplifier needs to be able to drive four times the power it can output to a 4 Ohm load. Not safe to do.

+1 with jls001

After going through those articles and as per suggestions by other FMs, I am nearing a conclusion that 2x10w speakers in series on 2 channels should give me reasonable opportunity to see if those speakers can be used with avr.
I will check and update here.
Front/Backside of speakers nothing written. Datasheet attached.
Can you advice what should be starting volume on these speakers.

May not be worth the effort. these speakers are supposed to be used with a Sub ?

Also not sure what you will achieve with this on only one channel ? technically you can put two in series as one unit and have two if those units in parallel but soundwise you may not achieve anything much.

 

[Krishroy2004]

Speaker impedance is 4ohm.
If I use two channels x 2 (10w) speakers each, them I think I will need to restrict the volume output on those two channels. I dont know how much to set it at.

Connect 2 speakers in series and connect it to one channel of your AVR. Keep the volume very low for the channel from AVR. Play some music and increase the volume 1 db at a time until you get to a desire label. Take caution, this may blow your speakers also.

 

[Krishroy2004]

I was planning them in one channel as putting them separately will definitely damage 10w speakers on higher volume as my other speakers are 100w+.

True, If they are cheap you can experiment.

 

[superczar]

Hello friends.
I have presently set up 3.1 speakers on my marantz avr. I have 4 x10w speakers lying idle which I am curiously looking for possibility to install together as overhead speakers ppwered through one channel on AVR. I have enclosed the schematic for the same. Is it possible to safely run it?View attachment 36316

What AVR is it?
That wiring, as others have pointed out is straight out recipe for trouble
I am sure you'd much rather prefer those speakers burning out than your AVR

A much better (and safer) way for you to use those speakers would be to use 2X2 (In series) as rear surrounds
If the speakers are very small, just set crossover for them to 160 hz or thereabouts
You can always reduce the channel level for the surround by -6-8 db to avoid overloading the speakers