Specifications

3.5DX1 Loudspeaker Management System
Refer to Section 1.5 for general information on the Martin Audio DX1 Loudspeaker
Management System including configuration examples.
3.5.1DX1 Output Gain and Limiter settings for W8CS’
Standardising on one good model of power amplifier (preferably the Martin Audio
MA4.2)and correctly set-up controller (preferably the Martin Audio DX1) will
provide the most dynamic system performance and protection whilst simplifying
design and reducing spares inventories. (See Section 1.5 and DX1 Speaker
Management System User's Guide for further details)
Gain settings
The following initial DX1 output gain settings will enable full system performance to
be obtained whilst keeping the console and drive system noise floors inaudible and
avoiding amplifier slew-rate limiting:
W8CS - assuming 800Wcont - 1600Wpk into 8ΩΩ power amplifiers:
Best-fit Initial DX1
Amplifier Amplifier Amplifier Output GAIN
Example Sensitivity Gain
dBu VrmsdB dB
Crown MA5002VZ (0.775v)-2 0.62 42 -9
Martin MA4.2** (41dB) -1 0.69 41 -8
Crest CA18 (x115) -1 0.69 41 -8
Crown MA3600VZ (0.775v)-1 0.69 41 -8
0 0.77 40 -7
+1 0.87 39 -6
+2 0.98 38 -5
+3 1.09 37 -4
QSC PL236/PL236A (36dB)+4 1.23 36 -3
+5 1.38 35 -2
+6 1.55 34 -1
+7 1.73 33 0
Martin MA4.2** (32dB) +8 1.95 32 +1
Crest 8001 (x40) +8 1.95 32 +1
Crest 9001 (x40) +8 1.95 32 +1
QSC PL236A (32dB) +8 1.95 32 +1
+9 2.18 31 +2
+10 2.45 30 +3
+11 2.75 29 +4
+12 3.08 28 +5
+13 3.46 27 +6
Crown MA3600VZ (26dB)+14 3.88 26 +7
Crown MA5002VZ (26dB)+14 3.88 26 +7
QSC PL236A (26dB) +14 3.88 26 +7
** Set Martin Audio MA4.2 rear MLS switch to 0dB to match peak output of
unregulated power amplifiers.
All material © 2007. Martin Audio Ltd. Subject to change without notice.
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