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EV SXA250 and DRIVERACK PA setup

kelekele Posts: 4
edited June 2006 in PA General Discussion
Hi Gadget,

I'm a proud owner of a Driverack PA system. I have 4 EV SXA250 speakers that i want to connect to the PA system, what would be the best configuration for this setup. this setup is for my mobile dj rig.
How do i set compressor and limiter on the PA for my speakers?

here is the specs for the speakers:

Compact 15-inch two-way powered system

Usable as a front-of-house system or as a floor monitor

Separate mic and line inputs with mix capability

350 watt dynamic LF power amplifier

80 watt dynamic HF power amplifier

LF and HF shelving equalization

Line output for cascading signal to additional speakers

80 x 55 degree constant directivity horn

126 dB maximum output capability

Enclosure is built of 18 mm plywood and finished in Futura, a sprayed-on polyurethane finish that is extremely durable.

Comes with metal stand mount and can be safely suspended using optional SK-1 hardware kit

Only 49 lbs

Technical Description

Frequency response (-10 dB): 55 Hz -- 20 kHz

Maximum SPL: 126 dB

Horizontal coverage: 80 degrees

Vertical coverage: 55 degrees

LF amplifier power: 350W 10ms burst, 150W continuous

HF amplifier power: 80W 10ms burst, 50W continuous

Mic input sensitivity: -35 dBu to 0 dBu for full output

Line input sensitivity: -12 dBu to 0 dBu for full output

LF transducer: 15 in.

HF transducer: 1.25 in. exit compression driver


-- Balanced inputs; mic, line: XLR, XLR % 1/4 in. phone combination

-- Balanced output: XLR

Equalization: shelving; LF +/- 6 dB @ 140 Hz, HF +/- 4 dB @ 5 kHz

Power requirement: 110-130 VAC, 50-60 Hz, 600 Watts


  • Options
    GadgetGadget Posts: 4,915
    So, no LF... Pre-recorded, heavily COMPRESSED music. correct? If so, in the DJ world, you have no punch. No sub sonics...

    In this instance ...now get this..absolutley NO compression!, NO Sub harmonic processor, use a bandpass, not a xover.

    Do an Auto EQ, using the new method I posted..Here:
    http://www.driverack.com/drug/view_thre ... d_id=41419

    If I have made an error, its because you didn't provide all the info...

  • Options
    kelekele Posts: 4
    Thanks for your response. I did miss out one thing, my EV SBA760 sub for my lows.


    Frequency range (-10 dB): 42 Hz -- 150 Hz

    Amplifier design: high-efficiency class H

    Output power: 760W (RMS)

    THD, rated: <0.05%

    Sensitivity (SPL 1W/1m): 100 dB

    Maximum calculated SPL: 128 dB

    Components: EVS-15FR

    Connectors: 2 XLR/jack combo input, 2 XLR slave through, 2 XLR mid-hi output

    Level control: +40 dB to -10 dB

    Internal crossover: PowerMax 12, 100 Hz

    Protection: dynamic limiter, DC, HF high temperature, peak current limiter

    Power requirements: 100V, 120V, 230V, 240V

    Cabinet: 16mm plywood vented enclosure, 4 whells, pole mount (M20), 2 handles
  • Options
    GadgetGadget Posts: 4,915
    Well thats better, You still won't want to use a compressor, the speakers allready have limiters so I'd say forget the redundant limiters...just let the speakers do their thing since the limiters are not defeatable anyway.

    The xover point will probably end up between 100, and 120 hz. I recomend a L/R24 xover, starting @ 100 hz. The sub allready has an HPF, so tis is going to be pretty easy.

    Try the new Auto Eq method as described here...
    http://www.driverack.com/drug/view_thre ... d_id=41419
    if you have the RTA mic.
    As for delay.. I forgot about the crossover delay... Try 5-7.5 ms on the tops, there should be a spot in there that sound tighter, I really don't like the sub synth...buts thats your call.

    let me know how it comes out
  • Options
    kelekele Posts: 4
    Hi Gadget,

    Thanks for the tips. I tried all your instructions and i must say that my systems sounds awesome, and I haven't had any problems with feedbacks since i started using the PA system.

    I want to know how I can setup the PA system to use just two of my monitors [EV SXA250] as full range speakers [using either the low our high output connector] without any subs. because sometimes I get gigs to do house parties, and I have noticed that the output from my sub can be alittle too much for such a setting.
  • Options
    GadgetGadget Posts: 4,915
    Do a custom setup, and select the c300 speakers. That is the unpowered version of the Mackie srm 450. That will set you up with a bandpass filter instead of a xover. you will then use the hI outs. remembrer to store that in a seperate location..
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