High pass/Low pass filter settings

[Mike Rojas 0]

I just put an MTX 704 in my truck for the speakers and a Kicker ZX300.1 for the 2 8" subs. My question is, the 704 has buttons to turn the high pass and low pass filters on/off, which should be on and which should be off? I tink I currently have the high pass on and the low pass off.

Thanks in advance,

Mike

[Big E 4]

For the 704 you're going to want the LPF off, and the HPF right around 60hz (this is around where the LPF on the 300.1 should be set).

Basically, it's in the name. High pass filter allow the high's to pass, and a low pass filter allows the low's to pass.

[frankyp00 0]

For the 704 you're going to want the LPF off, and the HPF right around 60hz (this is around where the LPF on the 300.1 should be set).

Basically, it's in the name. High pass filter allow the high's to pass, and a low pass filter allows the low's to pass.

I'm curious, because I dont know.

If the High pass is cutting off the frequency at 60 hz ( i assume this is sloped and affects the frequencies nearby aka 59, 61 etc.)

And the Low pass is cutting off the frequency at 60 hz

Who's covering 60 Hz?

[KU40 173]

They both are. A filter is not a direct and complete cutoff like a wall. Rather, it's a slope and just attenuates the level above or below the crossover point.

[helotaxi 46]

And the actual filter point is also called the half power or -3dB point. If both the highs and lows are down 3dB at 60 hz, assuming phase is correct, they will sum to righ around flat. In most cases there is a small bump in the response right at the corssover freq if both the high an low pass are set to the same freq. This can be fixed with a slight underlap of the freqs.

[frankyp00 0]

And the actual filter point is also called the half power or -3dB point. If both the highs and lows are down 3dB at 60 hz, assuming phase is correct, they will sum to righ around flat. In most cases there is a small bump in the response right at the corssover freq if both the high an low pass are set to the same freq. This can be fixed with a slight underlap of the freqs.

This is what I was thinking, so I have my crossovers overlapped aka low pass at 80 and high pass at 63 or so. I can't remember, it's been set a while

[KU40 173]

actually you have it backwards. You'd want underlap, not overlap. So in your example you may want the high pass at 80 hz and the low pass at 63.