4 replies to this topic

[hugsdrugs]

hey

* got a idmax 12" ready to run of jl 1000/1

* wanting a run the sub from 25hz -50hz

* LP 50hz @ 24dB.

* front stage got scanspeak 8535 in 10L sealed LP 80hz @ 12dB.

box specs:
25" length x 13" height x 11 depth" = 1.5cu with some internal size reduction

depth 15" = 2.1cu tuned to 31hz

[shiny_car]

i run mine in a 'sealed' box, around 1.3cuft nett internal volume. the sub is slightly biased in its design towards 'sealed'. i find it sounds excellent in terms of sound quality: nice linear, accurate subbass. my amp offers similar power to yours, which i find is ample for my needs; it can go very, very loudly.

i also have the LP at 90Hz, with 12dB/oct slope. it plays fine up this high, and provides some added midbass punch to compliment the front speakers. 50Hz, with such a steep slope, means it won't actually be doing much; of course it depends upon the music you're playing, but most music has subbass at around 60Hz.

[Cyberpunky]

mine are in 1 cube each sealed box with about 300 rms each. Xover at about 50-60 hz 24 db. they sound ok.

peace
Cyberpunky

[muzzy66]

I'd go sealed myself - it's a controversial topic that will always draw arguments, but my view is that ported boxes (while the have their benefits) just don't work well in cars.

[hugsdrugs]

i've tried all different box's with the idmax. overall each box has different results.

1.0 cu sealed: warm, blends with weaker mid bass's up front. enclosure for an all type of music situation

1.5 cu sealed. has sweet pressure, plays lower, pretty loud. will trash a small car from boot to front.

2.2 cu tuned 32hz: "built this morning tested this afternoon" much louder but lacks the feel in your chest. efficient use of power, deep and clean

tried 1.8 cu sealed once, not much point hits xmax of less power