BOOM BLAST...Help a brother fast!! |
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Michael Irie
Registered User Joined: 30 March 2006 Status: Offline Points: 4 |
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Posted: 17 April 2006 at 2:53pm |
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Greetings Crew..
I'm in need of some assitance setting the crossover point on my dbx driverack PA. I've got four new 18" 1000 Watt Scoop Bins, and I haven't been able to really see what they can do until I can figure out this crossover business. Here is my dilemma and the few answers thrown out. Can anyone help to walk me through setting the crossover point? I am trying to run 2 JBL SF-15's for highs and 4 18" Scoop bins for lows. I have a Crown CE-1000 to push the two SF-15's and a Crown CE-4000 to push the four custom made scoop bins containing Madison Executioner x 18" 1000 Watt Drivers. I purchased a dbx driverack PA to act as my crossover, and need some help configuring the crossover point (I think thats the problem). I currently have the two SF-15s as my left and right channels from the CE-100. I have the scoop bins daisy chained so that the left Channel of the CE-4000 goes out to one scoop which is then daisy chained to a second scoop via a double speakon outlet on the back of the scoop. The same for the right side. I used the "Auto-wizard" set-up function where I was able to identify the exact models of amps I'm using, and I was able to identify the highs as SF-15's, but I had to input the scoops as "Custom." When I fired everything up, the highs were getting a strong signal and bumping loud, but the scoop bins sound like they are barely on. They are definatley getting some signal, but its very faint. It seemed like they were not getting enough power, so I quickly shut the system down. There was never a point where I set the crossover point. I thought that the dbx "Autowizrd" was going to set that for me. Can you all provide some guidance for a newbie to get the right crossover point set. I'm playing reggae music, so I want a mix with HEAVY lowend. Thanks in advance for any advice. Here are the specs for my Scoop Bins: > >FS 36hz > >VAS 6.95 > >SD 213.82 > >Qts 0.545 > >Qes 0.577 > >Qms 9.79 > >BL 23.86 > >Re 5.5 x 2 > >Nominal Ohms 8 > >Le 2.858m H > >Mms 259.59 > >X max 0.75 > >X mech 1.5" > >SPL 103db > >Freq. Res. 30-1500hz > >Coil size 4" > >Coil type copper clad aluminum > >Cone type treated paper > >surround type accordion > >Binding posts gold > >basket type cast aluminum cast aluminum cast aluminum > >Magnet size 100oz. 200oz. 200oz. > >Power RMS 1000 watts > >Power Peak 2000 watts |
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Red pon Red and mi say Black pon Black
Thats how yu string a sound inna de lawn |
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ceharden
The 10,000 Points Club Joined: 05 June 2005 Location: Southampton Status: Offline Points: 11776 |
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From your other post you know how to set the crossover frequencies
manually on the Driverack. To start with try a crossover at about
120Hz between the scoops and SF15's and use a high pass on the scoops
at 40Hz. Set all slopes to LR-24. You'll probably need to
add a bit of gain to the scoops, start with about 3dB. You can
change the gain on the crossover section to the right of the crossover
slope adjustment.
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Michael Irie
Registered User Joined: 30 March 2006 Status: Offline Points: 4 |
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Ceharden..
Give Thanks for the advise. I'll give it a go this evening. Here's a rough Channel One Mix for your troubles.. http://www.sendspace.com/file/vyt9mi |
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Red pon Red and mi say Black pon Black
Thats how yu string a sound inna de lawn |
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mykey
Old Croc Joined: 18 August 2005 Location: UK/Indonesia Status: Offline Points: 9680 |
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Tom Umney
Registered User Joined: 26 February 2004 Location: United Kingdom Status: Offline Points: 4954 |
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Nice mix!!!
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Tom Umney
Registered User Joined: 26 February 2004 Location: United Kingdom Status: Offline Points: 4954 |
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My m8 Colin who lent me that pre-amp I posted a post about a few weeks ago is best friends with Mikey Dread from Channel One soundsystem. Now I wonder mykey if you might know my m8 Colin? as he helps Channel One out sometimes around Carnival period.
Edited by ToXiC - 20 April 2006 at 7:30pm |
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Michael Irie
Registered User Joined: 30 March 2006 Status: Offline Points: 4 |
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Toxic..
I'm glad that you liked that mix. Here's another one: http://www.sendspace.com/file/85q15l I'm happy to report that upon turning my crossover point up from 30 Hz to 250 Hz, I'm getting a strong bass signal to my scoops. Keep in mind I'm running a two way set-up with no dedicated Mids, which is why I have the crossover point at 250Hz, as opposed to having down around 100 Hz. I still need to experiment to get the sound right, but things are 100% better than when I originally posted here. Thanks to all for your advise. Any other tips on dialing in a crisp, punchy bass line would be much appreciated. Respect, -MK |
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Red pon Red and mi say Black pon Black
Thats how yu string a sound inna de lawn |
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Tom Umney
Registered User Joined: 26 February 2004 Location: United Kingdom Status: Offline Points: 4954 |
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Cheers m8. I got a few Iration Steppas@ University of Dub mixes I'm gonna upload soon, the bass is unbelivably powerfull sounding on that mix even through the headphones. A reggae pre-amp would help with your bass and other things a lot if you ain't got one already? mostec has a range of pre-amps, even 'The mini-Pre' would dramatically improve things and make the bass much crisper, etc. http://mostec.co.uk/electronics/preamps.htm |
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Tom Umney
Registered User Joined: 26 February 2004 Location: United Kingdom Status: Offline Points: 4954 |
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What other mixes you got? I got loads of Jah Observer,some Jah Shaka,some Iration Steppas, some King Shiloh,some Stur Gav and some Jah Tubbys mixes I can trade with you in return when I'll upload them in the next few days.
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mykey
Old Croc Joined: 18 August 2005 Location: UK/Indonesia Status: Offline Points: 9680 |
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from 30hz? you mean you had your bass going 30 down? and 250 to high for scoops you want 80cycles to 150cycles max you should get a bit of boom blast run for cover fast then Edited by mykey - 21 April 2006 at 8:52am |
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