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Need Help - DriveRack PA+ Crossover settings for new setup.

Valio_sfValio_sf Posts: 5
edited August 2011 in PA Configuration Wizard

My system is the following:

2 x JBL, MRX515 connected in stereo to QSC RMX2450 amplifier.

1 x Oberton, SB118 (18", 800W RMS @ 8 Ohm) Sub connected to Uniqaudio PA1800 amplifier (an exact copy of EV P2000) bridged mono - 1200W @ 8 Ohm.

Oberton, SB118 Sub Specifications:

TYPE: 18" bass box
Frequency Response: 40 – 200 Hz ( -10 dB)
Power Capacity AES ( low, mid, high): 1000 W
Program Power ( low, mid, high): 2000 W
Peak Power ( low, mid, high): 4000 W
Sensitivity 1W/1m: 98 dB
Max. SPL peak: 134 dB
Low Frequency Driver: OBERTON, 18XB800
Impedance: 8 Ohm
Connectors: 2 x Neutrickâ„¢ NL 4
Dimensions (H x W x D): 820 x 630 x 620 mm
Weight: SB118 - 53 kg

Oberton, 18XB800 speaker specifications you can find at the below link:


Mixer: Reloop, RMX-40 USB

Source: Desktop PC with M-Audio, Audiophile 2496 PCI sound card.

Processor: DBX, DriveRack PA+

All in the Setup Wizzard is set as it should be - the sub and the sub amp are set to Custom.

Please advise on what crossover points, LPF, HPF and should (Linquitz-Riley) 24dB per octave slopes be used or other for the JBLs and the sub.

Any help will be much appreciated.

Thank you in advance.


  • GadgetGadget Posts: 4,915
    With the amount of power you have I'd suggest
    HPF 45hz BW18
    LPF 100hz LR24for the subs and
    HPF 100hz for the tops...

    Read the "starts here" thread,
    and check out the FAQ's
  • Hello Gadget,

    Thank you very much for the fast response and your suggestions. That's what I needed before the first tests.
  • GadgetGadget Posts: 4,915
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