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PostPosted: Thu Jun 02, 2016 6:12 am 
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In an AV receiver, what output signal do we get from a subwoofer out under the pure direct mode? Is it the full frequency range? Thanks.


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PostPosted: Thu Jun 02, 2016 6:26 am 
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That pretty much depends on the individual model of your AVR and the manufacturer's philosophy of the subwoofer implementation. Most models should be only outputting an LFE signal from that subwoofer output, but other, more sophisticated models may output a full range signal that must be controlled from the crossover in your subwoofer when hooked up to its non-LFE input ((usually meaning the subwoofer line level inputs)


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PostPosted: Thu Jun 02, 2016 6:58 am 
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Thanks, OBI. My AV receiver is just a cheap Sony one (but its tonal quality for music is superb). I guess it outputs only the LFE signal.


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PostPosted: Thu Jun 02, 2016 7:14 am 
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Try plugging in a full range speaker and see what happens (keep the volume low)
OBI is right, every receiver is different.

Many subs DO have a knob to adjust the crossover (or a switch to defeat). Depending on the result you'll either need to leave it off or turn on the crossover and set it to taste (within reason)


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PostPosted: Thu Jun 02, 2016 8:01 am 
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FoxFoxFox wrote:
Try plugging in a full range speaker and see what happens (keep the volume low)
OBI is right, every receiver is different.

Many subs DO have a knob to adjust the crossover (or a switch to defeat). Depending on the result you'll either need to leave it off or turn on the crossover and set it to taste (within reason)


OK, thanks.


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PostPosted: Thu Jun 02, 2016 8:39 am 
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Pure Direct often bypasses any processing the receiver does including rerouting LFE signals to the sub. You might be getting full range of frequencies to the main channels only.

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PostPosted: Thu Jun 02, 2016 8:49 am 
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angust63 wrote:
Pure Direct often bypasses any processing the receiver does including rerouting LFE signals to the sub. You might be getting full range of frequencies to the main channels only.

That has been my experiance with the Yamaha and Marantz AV receivers I've owned.

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PostPosted: Thu Jun 02, 2016 8:52 am 
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angust63 wrote:
Pure Direct often bypasses any processing the receiver does including rerouting LFE signals to the sub. You might be getting full range of frequencies to the main channels only.


Thanks. But I checked it. I can hear sound from the subwoofer (connected to the sub out on the receiver). By the way, I'm using the receiver only for listening to Spotify. In fact, I bought it because it has Spotify Connect, which makes it easy for a technology illiterate like me to use.


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PostPosted: Mon Jan 23, 2017 9:42 am 
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KJT1 wrote:
angust63 wrote:
Pure Direct often bypasses any processing the receiver does including rerouting LFE signals to the sub. You might be getting full range of frequencies to the main channels only.

That has been my experiance with the Yamaha and Marantz AV receivers I've owned.


I've recently replaced a Denon 7.1 receiver that offered bass/subwoofer management option with the Pure Direct setting with a new Yamaha receiver that doesn't have the option. Maybe Yahama believes what most audiophiles think: That if you're using Pure Direct with the right Fronts, there is no need for bass management from subwoofers.


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