Stupid question

[OzNath 10+ year member]

I got a Kenwood KAC9105D mono amp, powering a single 12 Pioneer W3002D2 1000 rms sub. My question is my low pass filter on the amp starts at 50 hz does that mean it won't play notes below 50 hz. Also it has no subsonic filter. My ported box is 2 cubic feet tuned to 35 hz. Slams hard, but im thinking of upgrading my amp to a Pioneer one that puts out 1200 rms at 1 ohm and the lpf starts at 40 hz.

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[phemps 10+ year member]

I got a Kenwood KAC9105D mono amp, powering a single 12 Pioneer W3002D2 1000 rms sub. My question is my low pass filter on the amp starts at 50 hz does that mean it won't play notes below 50 hz. Also it has no subsonic filter. My ported box is 2 cubic feet tuned to 35 hz. Slams hard, but im thinking of upgrading my amp to a Pioneer one that puts out 1200 rms at 1 ohm and the lpf starts at 40 hz.

the low pass filter filters whats above your set point, not whats below it

 

[phemps 10+ year member]

Also it looks like that amp does have an infrasonic filter fixed at 15 or 25 hz possibly as a selector switch?

 

[OzNath 10+ year member]

Yea it does, never even noticed it. It's currently off should i turn it on to 15 hz or 25hz?

 

[Da64u 10+ year member]

Yea it does, never even noticed it. It's currently off should i turn it on to 15 hz or 25hz?

To 25hz. Off if you switch to a sealed box.

 

[OzNath 10+ year member]

Yea im running a custom ported box made for the sub, if i set it at 25 hz does that mean it won't play notes below 25 hz?

 

[phemps 10+ year member]

Yea im running a custom ported box made for the sub, if i set it at 25 hz does that mean it won't play notes below 25 hz?

that's were you want to have it set to protect your sub. below the tuning frequency of your box the sub has little cone control and you risk mechanical damage

 

[Da64u 10+ year member]

Yea im running a custom ported box made for the sub, if i set it at 25 hz does that mean it won't play notes below 25 hz?

That's correct. Because if you play notes below 25hz you'll ruin the sub. Unless the box was tuned lower for example.

 

[OzNath 10+ year member]

Cheers mate i will set it at that =)