RM20 Speaker Set - Subwoofer Connections ???
Denny
Posts: 1
I just received the RM20 surround speaker set and I have a question about the connections to the subwoofer.
In the manual that comes with the set, it shows two ways to connect from the amplifier (Yamaha 5890) to the subwoofer. The recommended way is to connect the Left and Right Front Speaker outputs from the amp directly to the subwoofer's "Speaker Level Inputs" and then the Speakers themselves connect to the subwoofer's "Speaker Level Outputs"
Other RCA jacks are on the rear of the subwoofer but not explained in the manual. They are:
LFE
Line in (Filtered) Left
Line in (Filtered) Right
What are these for?
By the way, the Yamaha 5890 does have a "Subwoofer Out" RCA jack on it.
Thanks,
Denny
In the manual that comes with the set, it shows two ways to connect from the amplifier (Yamaha 5890) to the subwoofer. The recommended way is to connect the Left and Right Front Speaker outputs from the amp directly to the subwoofer's "Speaker Level Inputs" and then the Speakers themselves connect to the subwoofer's "Speaker Level Outputs"
Other RCA jacks are on the rear of the subwoofer but not explained in the manual. They are:
LFE
Line in (Filtered) Left
Line in (Filtered) Right
What are these for?
By the way, the Yamaha 5890 does have a "Subwoofer Out" RCA jack on it.
Thanks,
Denny
Post edited by Denny on
Comments
-
Denny, welcome. The RM20 system is apparently intended to be used pretty much in a plug and play type of operation with little adjustment made by the user, so the manual has very little detailed information. On the the other hand, your 5890 is a fine receiver with plenty of adjustments available. Rather than either of the suggested hookup methods shown in the manual, you might want to at least try a third possibility: instead of speaker wire to the sub use a coaxial cable with an RCA plug on each end to connect the sub output on the 5890 with the LFE input on the back of the sub. The LFE input is unfiltered and completely bypasses the internal sub crossover(and its setting), so you would let the 5890 handle the crossover duties by setting all speakers "small" with sub on and an appropriate crossover frequency selected. From the numbers in the Polk manual it appears that the speakers have little output below 100Hz, so 100Hz would be the most likely choice for the setting on the 5890(you might also run YPAO to see where it sets the crossover). The speakers would of course be directly connected to the 5890's speaker terminals with regular speaker wire, rather than going through the sub.
-
For many and most sub/sat systems you are best to use the line in (speaker cable) method and set mains to large.
