[mmurali]

Hi,


I just bought a Pioneer VSXD711; manual says "use speakers with a

nominal impedance of 8ohm to 16ohm" - the continuous power output

is 100W per channel (5 X 100).


I already have the old Bose AM6 cube speakers; the manual says

"compatible with A/V receivers rated from 10 to 100Watt per channel;

rated from 4 to 8 ohms". I would like to keep these speakers

for a little while (and just add a active subwoofer).


My question is, what does the range on impedance mean (do the speaker

and receiver need to have same range?). Since they both meet at 8 ohms

is it going to be fine? OR will it create problems?

I usually play music at moderate volume (not too low and not too high).


Thanks.

Murali.

 

[lespurgeon]

You will be fine at normal volume.


The Pioneer can't drive a difficult load very loud, but the Bose can't be played too loud without sounding really bad - so go for it, just don't turn the volume dial too high.

 

[mmurali]

Thanks for the response. I am going to go for it.


Murali.

 

[hometheaterguy]

I second his opinion that you will be fine. The receiver says speakers with an impedance of 4-8 OHMS can be used without problems, and your speakers fall into that safe range.

 

[mmurali]

Hi,


I hooked it up and took it for a test ride. I don't usually play loud music, but i wanted to push it and see what happens.


Setup:

FL, FR, SL & SR set to Large Speakers at +8db.

Center set to Small Speaker at +8db

Subwoofer: Off (since i have the passive subwoofer which takes

all 5 speaker wires)

Cutoff frequency at 200Hz


At approximately -18dB of volume (i think it has a relative scale??), the

first blast in "Italian Job" (where they blow the safe down into water)

shut-off the receiver for "OVERPLAY".


Then i reduced all five speakers to +4db and repeated the same without

a problem.


Now, i have another question, just out of curiousity.


If i add an "Active Subwoofer" and connect it to "subwoofer pre-out", will

it reduce the load on receiver?

I am assuming that the low frequencies drive the speaker at lower

impedance?? and if i re-direct atleast the LFE to an active subwoofer, the

other speakers will be drive at little higher impedance???


Thanks.

Murali.

 

[dsmith901]

Use of preouts does not affect the receiver's amps. In fact, if your receiver has preouts on all channels I recommend you look for a good used multichannel amp rated @ 4 ohms. The H/K PA5800 can still be found for about $300 and it is a very fine amp that will drive difficult loads. Check out audiogon for a good place to find used gear.


Dsmith