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4 ohm, A./ 8 ohm,B.

Boozehound

Boozehound

AK Subscriber
Subscriber
Hello, question for the experts.

I am on the road and need advice please.

Need to run 4 ohm. Forte speakers on the( A )output.
And a Velodyne CT80 sub, on the ( B )output.
I am guessing 8 ohm.

Am I way off on the powered sub.
Will it mater.speaker level input only hookup!

Will this stress my amp?

Receiver is a pioneer SX-1050
 
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The sub does not present the load of its speaker to your SX-1050....the 1050 is not driving the subwoofer, it is just providing the signal to the sub's amplifier. The impedance of the sub's amp is so high that its effect on the 1050 is negligible.

The 1050 is rated to handle a 4 ohm load, so it will accommodate your Fortes.
 
I would suggest using the tape outs as a pre out.

If you use the speakers outputs, any bass/tone control that you do will be applied to the signal you are sending to the sub - you will not be able to control the bass independently. Also, you would not be able to high pass the speakers being driven by the reciever
 
Using tape outs is a PITA because the level of the sub isn't controlled by the volume. In this case using the speaker level inputs makes more sense.

If the receiver has pre out / main in one could put the sub there, using the low level inputs. However, if the sub does not offer a high pass filter for line outs there is no practical benefit to that path over using speaker level connections.
 
gr33nhorn said:
I would suggest using the tape outs as a pre out.

If you use the speakers outputs, any bass/tone control that you do will be applied to the signal you are sending to the sub - you will not be able to control the bass independently. Also, you would not be able to high pass the speakers being driven by the reciever
Click to expand...



I would hope that the OP does not need to boost his bass output if using a sub, and any boost in treble will not affect the sub. The downside of using the tape outs is that he must change the volume on the sub each time he changes the volume on the 1050.

If he wants to use the crossover built into the Velodyne to offload low bass from the mains, he can connect the speaker outputs of the 1050 to the Velodyne speaker-level inputs, and then connect the Velodyne speaker-level outputs to his mains. In this arrangement, the crossover in the Velodyne will restrict frequencies below 80Hz (approximately) from passing to the Fortes.

Alternatively, he can use the preamp outs from the 1050 to connect it to the Velodyne, and then feed the 1050's power amp ins from the Velodyne. The Fortes would be connected to the 1050. This arrangement, as the one above, uses the crossover built into the Velodyne to restrict the lowest frequencies from being delivered to the Fortes.

And the Velodyne has an "on/off" switch for the crossover....so the OP, using either of these two wiring arrangements, can experiment to determine whether he prefers having the Fortes operating as full-range speakers or as "mid-bass and higher" speakers.
 
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