What crossover setting

[Fosgate Forever 10+ year member]

What crossover setting should i set my amp at to get the lowest possible bass note.

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[iceteebone 5,000+ posts]

0? what the hell kinda question is this?

 

[Fosgate Forever 10+ year member]

amp is a MRD-M1005, and sub is SWX-1242D

 

[Fosgate Forever 10+ year member]

i want to know what to set my crossover at, to get the lowest bass note out of my sub

 

[D-C 10+ year member]

um, not sure but wouldn't you be setting the highest it should play at? In other workds, if you're setting a low-pass filter, you would set it so that the sub would play everything below, let's say, 60?

 

[Fosgate Forever 10+ year member]

i have it set as 60hz now i was just looking for second opinions

 

[ngsm13 5,000+ posts]

Wow.

It's a low pas filter, it will not affect the "lowest note"

nG

 

[Polecat 5,000+ posts]

if you want lower, you may need to make a ported box.

 

[helotaxi 5,000+ posts]

if you want lower, you may need to make a ported box.

For the absolute lowest notes the sub is capable of playing, a ported box won't do it. Sorry. Look at the response plots of the same sub in a ported and sealed box. From about 30-50hz the ported box will be louder, but below about 25Hz the sealed box will be louder more accurate and actually in control of itself. Get much below tuning freq, and a ported sub is no longer damped by the enclosure and is actually prone to overexcursion because of box pressure. At the same time output drops dramatically due to port cancellation. In a basic sealed box in a car with cabin gain factored in, most any sub can play well into the inaudible range. I've seen plots of flat response down to 10Hz.

 

[Fosgate Forever 10+ year member]

sweet exactly the kind of stuff i was looking for i'll try it out

 

[Polecat 5,000+ posts]

For the absolute lowest notes the sub is capable of playing, a ported box won't do it. Sorry. Look at the response plots of the same sub in a ported and sealed box. From about 30-50hz the ported box will be louder, but below about 25Hz the sealed box will be louder more accurate and actually in control of itself. Get much below tuning freq, and a ported sub is no longer damped by the enclosure and is actually prone to overexcursion because of box pressure. At the same time output drops dramatically due to port cancellation. In a basic sealed box in a car with cabin gain factored in, most any sub can play well into the inaudible range. I've seen plots of flat response down to 10Hz.

exactly, but without knowing 100% how his box is, rather small or too large, if mostly want more output, a low tuned vented enclsoure usually get's them what they want, with less power, over sealed.

 

[Fosgate Forever 10+ year member]

box is the recomended 2.0 cubes sealed after sub displacment

 

[Prowler573 5,000+ posts]

To answer the question asked in the original post, though, is nowhere. The crossover setting has zero affect on the lowest note your sub will play - only what specific range of frequencies are passed to it to be reproduced.

Your sub enclosure, the source material, and the sub itself dictates the lowest note the sub wil play. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif