Behringer Ultradrive bass setting help

hey guys i have a friend that just got a Behringer Ultradrive that he will use in his bass rack to run 2 ca12 as bass duty but he want me to pre set it before he put it in....the system is 4 Cerwin Vega AB36B with fane xb an 2 dural hd for kick ....
all i need help with is to pre set the bass setting hi pass to lo pass an slope also the eq boost an maybe delay.... by the way he will only be useing one of the ca 12....
thanks

Hi

Please fill in the following. Each category needs make, model and rated wattage (RMS or AES preferred). Also, indicate the number of cabinets or amplifier channels in use for each category.

If you are using seperate "sub" and "kick" bins, please fill in the following:

Sub cabinet:
Sub amp:
Kick cabinet:
Kick amp:

otherwise, if there is just one kind of bass cabinet, fill these in:

Bass cabinet:
Bass amp:

If you are using seperate amplifiers for mid and high-frequency drivers in your tops boxes (called active, or bi-amping), please fill in the following:

Mid driver:
Mid amp:
High driver:
High amp:

otherwise, if just one amp for tops, please fill these in:

Top cabinet:
Top amp:

In addition, it would help if you gave a little guidance about the sound you want to achieve:

Do you need to throw the sound over a long distance:
Will you be indoors or outdoors:
Are you mostly concerned about quality at low/medium levels or high levels:
Do you like ear-splitting treble [1]:
Do you need to feel the kick in your chest:
Do you need to drop the bass like your bad self:

These answers will help us to advise you.

[1] ear-splitting treble is, as the name suggests, bad for your ears.

thanks for the replay

yes am using seperate "sub" and "kick" bins
Sub cabinet: 4 Cerwin Vega AB36B with fane xb
Sub amp: on one crest ca 12
Kick cabinet: 2 dural hd with kappa pro lf
Kick amp: crest pro 8200
for tops 4 mt121
Mid driver: B$C 12pe32
Mid amp: crest ca9
High driver: P AUDIO_SD750N.8 with B&C_ME60 horn
High amp: crest ca6

Will be playin for big hall an outdoor(block party)
for sound just want it to sound right
love hard kick and lo bass mid /hi shoud sound the way it should
playin mostly reggae an soca music
hope u under stand what an saying

OK, this is just one opinion, you probably should ask others too, and I haven't used most of the kit you have listed. Anyway, here goes...

You want a 4-way active system, but the berry only has 6 outputs. I suggest running the sub and kick as mono. Then the berry's outputs are:

left high, left mid, right high, right mid, kick, sub

You want to put your stereo feed into inputs A and B, and then use the "sum" signal to drive the sub and kick channels. Crossovers should be something like this:
Sub: 25-100Hz
Kick: 70-250Hz
Mid: 175Hz-1.5KHz
High: 1.5KHz up (no upper limit)

Use Linkwitz-Riley 24 for these, except possibly the kick channel which might work better with bessel 24, since this leaves the group delay curve cleaner.

I don't know the delay settings for any of these boxes. If you can generate an 85Hz tone, you can experiment with delay on the kick channel until you get the loudest output - now sub and kick are operating in phase. It should be a few milliseconds of delay.

The MT121s will be directional. Get them high up and tilted slightly down if possible (safely!). Take advantage of the fact you have 2 per side to splay them a bit and get the right horizontal spread.

You are marginal on sub amp wattage. You are OK letting them get slightly into clipping, but the clip light should flicker, not be solidly on. You can increase your bass output by putting all four subs in one big stack. Arrange them on their sides, two by two, logo outwards so that the flares seem to form a single big flare. That's how it actually works and you get louder and cleaner bass.

thanks ill try those frequence but its 250hz for hd is too hi?

t.geessounds wrote: thanks ill try those frequence but its 250hz for hd is too hi?

250Hz is what I would use, it minimises the likelyhood of the xover itself taking away some of the kick. There isn't really much downside to going up to 250Hz. You will conserve a little power by stopping at 200Hz but not much.

ok will try your setting this week end