The addition of AD144 to the range of Audio Developments mixers has not only provided wider customer choice with regard to location mixing, but also presents applications in small studios and OB vehicles.
Customized extruded metalwork developed for the AD140 series creates a robust chassis appreciated by audio professionals. With four outputs and four auxiliaries: M-S stereo facilities on inputs and outputs; transformer balancing throughout and comprehensive monitoring gives
AD 144 flexibility enabling uses in a wide range of applications. The ergonomically friendly design and construction uses professional components – including Penny & Giles 100mm long stroke, conductive-plastic faders..
» Input module options are Mic/Line and Stereo Line.
» Each input has a three band equalizer; phase switch; separate routing switches for the four main groups; PFL, monitor mix and solo in place; plus an overload indicator. Twelve to twenty-four input chassis are available.
» Four master outputs controlled by individual main output faders. The outputs are transformer balanced on XLR connectors and have switchable, stereo linkable limiters; an LED indicating the action of limiting.
» Four independent auxiliary sends from each input with separate level controls and on/off, pre/post switching to separate mix busses. The outputs are transformer balanced on XLR connectors and controlled by rotary master potentiometers.
» Comprehensive M-S stereo facilities on the inputs, outputs and monitor chain allow decoding from M-S to L-R and L-R to M-S.
» Four electronically balanced line level returns on jacks enable monitoring of mono or stereo sources from such as tape recorders
» Two monitor modules allow separate control of left and right. Monitor 1 is transformer balanced on XLRs and can be switched between all the main outputs, with PFL capable of being mixed in. Monitor 2 is the headphone output and follows monitor 1 except that PFL selection automatically overrides other selections. An M-S matrix amplifier may be inserted in the monitor path in order to decode a main output in the – M-S domain or check mono compatibility and phase cancellation when in the L-R domain.
» A pair of meters – either PPMs or VUs – may be switched to monitor either the main outputs, auxiliaries or monitor output. The meters can be illuminated.
» All input and output connectors are presented on one surface of the case and in line with their corresponding modules.
» The mixer receives its power from an external DC voltage source. – Audio Developments AD100-09b power supply unit is designed to drive the mixer.
» 15 way D connector for feeding external equipment.
TECHNICAL SPECIFICATION – ELECTRICAL
REFERENCE 0dB = 775mV at 1kHz unless otherwise stated
MAX GAIN MIC 85 75 65 55 45 35 dB
LINE 50 40 30 20 10 0 dB
MAX INPUT LEVEL MIC -42 -32 -22 -12 -2 +8 dB
LINE -7 +3 +13 +23 +33 +43 dB
RETURNS +24 dB
INPUT MIC >1k5
IMPEDANCE LINE >10k
MIC POWERING +48V DC and +12V DC PHANTOM POWER
+12V TONADER (to order)
MAX OUTPUT +23.5dBm (600R LOAD) – A, B, C, D; MASTER,
AUX 1, 2, 3, 4: TRANSFORMER BALANCED
DIRECT CHANNEL OUT; ELECTRONIC BALANCED
+18dBm (600R LOAD) – MON 1 L&R; MON 2 L&R;
MON 2: UNBALANCED STEREO JACK
OUTPUT <60R A,B,C,D; AUX1,2,3,4; MON 1; MON2; DIRECT OUT IMPEDANCE <20R MON 2 (HEADPHONES JACK) FREQUENCY +0; -1.5dB 20Hz to 20kHz MAIN/AUXILIARY SIGNAL PATHS RESPONSE +0; -1.8dB 20Hz to 20kHz MONITOR SIGNAL PATHS EQUALISATION LF; SHELVING ±10dB @ 100Hz VARIABLE TURNOVER MAX ±15dB @ 30 Hz MF; PEAK/DIP ±15dB @ 2k8Hz Q = 1.2 RECIPROCAL HF; SHELVING ±10dB @ 10kHz VARIABLE SLOPE MAX ±15dB @ 30kHz HIGH-PASS -3dB @ 90Hz and 150Hz, 12dB/OCTAVE SLOPE FILTER HARMONIC <0.03% @ 1kHz 0dBm OUTPUT DISTORTION <0.15% @ 40Hz to 20kHz +15dBm OUTPUT CROSSTALK >70dB 40Hz to 15kHZ INTERCHANNEL & INTERGROUP
>55dB 40Hz to 15kHz BETWEEN L&R ON STEREO CHANNEL
NOISE MIC <126dB 20Hz to 20kHz 200R SOURCE (WITH RESPECT TO THE INPUT) LINE <70dB SIGNAL-TO-NOISE RATIO 20Hz to 20kHz LIMITER THRESHOLD +8dB RATIO 7:1 ATTACK 2ms (SET AT FACTORY) (VARIABLE VIA INTERNAL PRESET) RELEASE 250ms (SET AT FACTORY) (VARIABLE VIA INTERNAL PRESET) POWERING EXTERNAL POWER SUPPLY UNIT ±12V DC, 5-PIN XLR 7W (WITHOUT MICROPHONE POWERING) AD144 is supplied with 12, 14, 16 or 18 input modules. A separate meter bridge fitted with 4 VU or PPM meters can be supplied as an option to read outputs A,B,C and D. The mixer's meters can then be dedicated to auxiliary 1 & 2, auxiliary 3 & 4 and monitor 1/PFL outputs
Mix Minus outputs