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scar tissue causing permanent hearing loss, you can return to hear your mix with fresh ears. The mix should sound invitingly loud, but not painful. • In basic terms, if you find that you’ve turned up the high end since the night began and it still sounds the same to you as it did at the beginning, watch out. That’s not “fatigued horns” or “changing room acoustics” rolling off the high end, it’s your ears. Please do yourself and your audiences a favor - USE EARPLUGS! And if you can’t bring yourself to do that, be considerate of your audiences and leave the high-end EQ or crossover at normal settings.

Specification

s

Number of Channels 12 (AP818: 18)
Mono Channel EQ (ch.1 to 8) Low, Sweep Mid, High (AP818: Ch. 1 - 14))
Stereo Channel EQ (ch. 9/10 & 11/12) Low, Mid, High (AP818: Ch. 15/16 & 17/18)
Channel Effects All Channels
Monitors Effects Yes
Balance Controls 9 to 12 (AP818: 15 to 18)
Pan Controls 1 to 8 (AP818: 1 to 14)
Inputs - XLR (bal) Ch. 1 - 8 (AP818: Ch. 1 to 14)
Inputs - 1/4-inch Ch. 1 - 12 (AP818: 1 to 18)
Inputs - RCA (unbal) 2 Stereo Sets
Clip /Mute LED All Channels
Phantom Power 24 V + LED indicator
VU Meter 2 x 5 LED
Headphone Monitor Features Cue , Volume
Internal Effects Digital 16 Bit; 255 Effects
Effects Send 1 Internal/External
Effects Return to Main Yes
Effects Return to Monitor Yes
Reverb / Effects Footswitch Yes
Max Gain to Line Out -Mic Input (dB) 63
Max Gain to Line Out -Line Input (dB) 45
Master EQ -1 (type /Channels /Range - dB) Graphic / Mono / 9 Band 63 Hz - 16,000 Hz
Master EQ -2 (type /Channels /Range - dB) Graphic / Mono / 9 Band 63 Hz - 16,000 Hz
Main Outputs ( Line Level) 4 , 1/4 inch (TRS) 2 pre, 2 post EQ
Main Amp Inputs (Line Level) 2 , 1/4 inch (TRS)
Monitor Outputs (Line Level) 1, 1/4 inch (TRS)
Outputs - Amp A - 1/4-inch Jacks 2
Outputs - Amp A - Speakon 4-pin 1(Euro only)
Outputs - Amp B - 1/4-inch Jacks 2
Outputs - Amp B - Speakon 4-pin 1 (Euro only)
Mixer - Signal to Noise Ratio (dB) greater than 100
Mixer - Frequency Response (Tone and EQ Flat,+/-2dB) 20 Hz - 20,000 Hz
Mixer - Input Referred Noise to line out, @ 150 ohms (dBv) -117
Mixer THD (Main out w/ -10dB input) less than 0.03%
Amp A - Power Output @ 8 ohms (0%1"THD, 1kHz) 240
Amp A - Power Output @ 4 ohms 455
Amp A - Power Output -other 315 @ 2 ohms
Amp B - Power Output @ 8 Ohms (0%1"THD, 1kHz) 240
Amp B - Power Output @ 4 ohms 455
Amp B - Power Output -other 315 @ 2 ohms
THD - 1kHz (dB) less than 0.03%
THD - 20Hz-20kHz (dB) less than 0.1%
Hum and Noise (un / Aweight -dB) -98
Typical crosstalk -1 kHz (dB) -66
Input Impedance - Bal/Unbal (ohms) 22,000 - 12,000
Input Sesitivity (Vrms Sine) 1.47 V
CMRR @ 60Hz (min/typ) 54 dB / 66 dB
Max Votage Gain (dB) 29
Power Consumption (typ/max) 660 VA / 1200 VA
Protection Thermal / Load / DC
Cooling Variable Speed DC Fan
Transformer Type Toroidal
Finish Scratch Resistant Vinyl-Coated Aluminum
Chassis Construction Steel
Rackmount Yes (RK812) (AP818: NOT APPLICABLE)
Other Features Selectable stereo mains or mono main & monitor.
Dimensions (DWH, inches) 18 x 19 x 5.5 (AP818: 18 x 25.3 x 5.5)
Dimensions (DWH, cm) 45.7 x 48.3 x 14 (AP818: 45.7 x 64.3 x 14)
Weight (lbs/kg) 38 / 17.3 (AP818: 43 / 19.5)