KOK Audio EQ-9231 Karaoke Equalizer

The Equalizer includes the following features:

• Revolutionary dbx Type III^TM Noise Reduction capable of restoring up to 20 dBs/ N ratio
• Switchable range between ± 6 dB and ± 15 dB
• Balanced input and outputs
• XLR, Barriers Strip, and ¼” TRS connectors
• -12 dB/ +12 dB Input gain range
• 18 dB/ octave 40 Hz Bessel Low-Cut filter
• Chassis/ signal ground lift capability
• Internal power supply transformer
• Power- off hard-wire relay by pass with 2-second power-up delay

SPECIFICATIONS

Inputs:

• Connectors: ¼” TRS, female XLR (pin2hot), and barrier terminal strip
• Type: Electronically balanced/unbalanced, RF filtered
• Impedance: Balanced 40 KΩ, unbalanced 20 KΩ
• Max Input Level: >+21 dBu balanced or unbalanced
• CMRR: >40 dB, typically > 55 bB at 1 kHz

Outputs:

• Connectors: ¼” TRS, male XLR (pin2hot), and barrier terminal strip
• Type: Balanced/ unbalanced, RF filtered
• Impedance: Balanced 120 kΩ, unbalanced 60 kΩ
• Max Input Level: >+21 dBu balanced or unbalanced

                                    >+18 dBm Balanced/ unbalanced (into 600 Ω)

System Performance:

• Bandwidth: 20 Hz to 20 KHz, +0.5/-1 dB
• Frequency Response: 1 <0 Hz to >50 kHz, +0.5/-3 dB
• Noise Reduction In: 6 (+/- and +/-15 dB range)
• Signal-to-Noise: 1 > 00 dB, unweighted, ref: +4 dBu, 22 kHz measurement bandwidth
• Dynamic Range: 1 >18 dB, unweighted
• Noise Reduction Out: 6 (+/-dB range)
• Signal to Noise: 9 >4 dB, unweighted, ref: +4 dBu, 22 kHz measurement bandwidth
• Dynamic Range: 1 >12 dB, unweighted
• Noise Reduction Out: 1 (+/- 5dB range)
• Signal to Noise: 9 >0 dB, unweighted, ref: +4 dBu, 22 kHz measurement bandwidth
• Dynamic Range: 1 >08 dB, unweighted
• H.D +Noise: 0 0 < .4%, 0.02% typical a+4 dBu, 1 kHz

                                     <0.5% at 1 kHz with 15 dB gain reduction

• Inter channel Crosstalk: 8 <-0 dB, 20 Hz to 20 kHz (2215/2231)
• Noise Reduction: Up to 20 dB of dynamic broad and noise reduction