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Featured Replies

Posted

I need help configuring my amp to the BTL sub!

anyone can help me?

i pretty much know nothing

  • Author

I have a 18 inch BTL with all options,

I have a memphis mojo 2000D

amp

I owned two memphis 500d before this, but the mojo amp has more control settings and i dont understand them.

Do you have an enclosure for them? Set the subsonic filter a 2-5 Hz below tuning depending on the filter rate (12dB rate should be set closer to tuning and a 24dB can be set up to 5 Hz below). I recommend an 80 Hz low pass setting for almost any system. Setting higher ruins the bottom end intigration and draws your attention to the "bass" in the rear of the car. Setting lower in most systems leaves a hole in the response as most people dont have enough midbass as it is. If you dont have an oscope then set gains lower to start with. A multimeter can help things along, but with some of the tutorials I have seen lately, they look to get more people into trouble than they are worth (truly you cant set up an amp with only a multimeter unless you have a current clamp and even then... its no where near as accurate as with an oscope).

Even though the BTL should take that power with ease, starting on the safe side of settings and backing your way into higher ones is the safe way to go. If you have any specific questions, please let me know.

Thanks,

Scott

  • Author

Yes I built a box tuned to 34 Hz, 120 in2 (20x6) port and 7.6 cubes lined with fiber glass and some fill in it,

it SLAMS!

I cant get over HOW DEEEEEP this sub is, even at low volumes I can hear it in my neighbors back yard.

I hooked it up inside of my house for now, to tune it before I set it up in the car.

how would one use an oscope?

why is it helpful?

Are you thinkin of producing components?

SCOTT thank you so much!

this is a great product at and even better price!

you have made a fi enthusiast for life!

Thank you again for all your help, I know it must have been annoying to

answer all my stupid little questions along the way, however I am

very satisfied with my purchase!

LOVE LOVE LOVE the btl!!!

it has such a solid DEEP reflex!

best sub overall I have heard!

THANK YOU again!

Ill be sure to let everyone know about FI audio,

Never mind they'll find out themselves when they hear me

  • Author

one last thing how is the QFC done?

The variance for my paticular amp is 0.5 - 1.2

i believe i have to match it to the output of the head unit right?

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