Speaker A & B in AVR.... Same Power/Output ?

[rana_kirti]

Hi frens,

hope everyone's had a great start to 2011....

I have Yamaha RX V450. It is a 6.1 AVR rated at 85 w. Got 2 small buttons on front which says Speaker A & Speaker B.

Speaker A is linked at the back as the Main Front Left & Right. Speaker B has two speaker inputs behind the AVR besides Speaker A.

I tried going through the manual but couldn't figure this out.

If i use this as a stereo amp with an intention to test/compare 2 different pairs of speakers. So i got Speaker Pair 1 connected to speaker A and Speaker Pair 2 connected to Speaker B. ( and nothing is connected to other channels )

Now if i play music through the AVR will it give same power/output to both the Speaker A ( Main left & Right ) and to Speaker B. Or will there be a difference in power/output.

In summary..... i'm trying to figure out if i can use this AVR to compare 2 different pair of speakers which my friends want to bring to my house to do a comparison.

Thanks.

 

[audiowhat]

Good questions here - i have an avr and have similar questions around that. I hope others here will respond.

Thanks.

 

[mpw]

just to give an example..

My HK AVR 255 is rated at 65W for 2 channel and for 5.1 channel or 7.1 channel it is rated at 50W ALL CHANNELS DRIVEN.

The HK AVR 255 also has a Zone 2 capability.

Case 1 : If we connect a 5.1 channel system to the AVR Zone 1 and also the Zone 2, then the output would be 50W per channel - ALL CHANNELS DRIVEN

case 2 : If we connect 2 front speakers in Zone 1 ( Speaker A ) and 2 other speakers in Speaker B ( Zone 2 ), then the power output 65W. This is if you drive these speakers ALTERNATELY.

From your remote control you will have to select weather only Zone A or Zone B speakers are to play Or both zones.

Case 3 : Similar to Case 2 but BOTH sets of speakers ( 2 in Zone A and 2 in Zone B ), then the power output 50W per channel playing simultaneously

hope this helps..

Basically the AVR transformer gives greater current for only 2 speakers and anything more than 2 speakers the current driving ability reduces.

This means that if we drive 2 speakers then 65W and if we drive 4 speakers simultaneously 50W.

There also would be circuitry inside the AVR to detect how many speakers are connected and the AVR program would adjust power accordingly.

Alternately.. you may go in for a speaker selector switch if you wish to compare different speakers just like you see in demo showrooms.

mpw