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Powered subwoofer impedance

Am a rank layperson so please pardon my stupid question!

 

My big old Marantz amp died recently and am looking around for a replacement, so need to be aware of power@impedance factors.  From one set of amp speaker terminals I run via speaker wires an old M@K v-75 mk2 powered subwoofer, which in turn powers a pair of 8 ohm RBH MM-4 satelites.  From the other set of amp speaker terminals I run a pair of 8 ohm old Bose 601s.

 

My question is:  What impedance should I consider my subwoofer to be running at?  Can't find anything about this in my M&K owners manual or anywhere else.

Thanks,  Mark

 

 

wandermark
elliottbnewcombjr
5,376 posts
 

self-powered sub's impedances match their internal amps which are designed together 

erik_squires
16,058 posts
 

So long as we are talking about a powered sub, uou can ignore the subwoofer.  Pretend it isn't there.

There IS an impedance of the input of the subwoofer circuit, but it's usually in the 10s of kiloohms, so immaterial to the overal value. The amp might see a difference of 0.0001 ohms at the end of the day.

 

 

wandermark OP
1 posts
 

Many thanks for your help, Erik!

 

Regards,  Mark

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