Meyer Sound M1D User Manual

M1D Rigging Grids and Accessories
PN: 05.115.001.01 B
Page 6 of 24
Meyer Sound Laboratories Inc.
www.meyersound.com
T: +1 510 486.1166
F: +1 510 486.8356
M1D Rigging Grids and Accessories
PN: 05.115.001.01 B
Page 7 of 24
Meyer Sound Laboratories Inc.
www.meyersound.com
T: +1 510 486.1166
F: +1 510 486.8356
M1D GRID CAM OVERVIEW
The M1D grid cams are used to connect an M1D/M1D-Sub to the MG-1D multipurpose grid or MTG-1D top grid. The
holes in the M1D grid cams align with holes in the MRF-1D rigging frame and the MG-1D grid. Two quick release pins
(QRPs) are provided per side that insert through the holes.
A variety of tilt angles can be achieved through the selection of pin positions. In a own array, positive angles are used
for up tilt and negative angles are used for down tilt with respect to the adjacent element above. For ground stack ar-
ray congurations, the angle is with respect to the adjacent element below.
The angle of the loudspeaker in relation to the grid is calculated by adding together the numbers etched next to
each hole. When an M1D is the rst unit in the array, the M1D grid cam provides from -14° to +14° of tilt in 2-degree
increments. If an M1D-Sub is used as the rst unit, 0° to +14° of tilt is possible, again in 2-degree increments.
Although own congurations may not require the exibility of the M1D grid cam, it should always be used as the rst
link between the grid and the array. In own congurations, the up and down tilt can additionally be adjusted using
chain motors, or differing lengths of steel or span set. In a ground supported situation, however, the M1D grid cam is
the only way to tilt the array up or down in relation to the MG-1D grid.
Example 1 (Flown)
Top grid cam pin position +2
Bottom grid cam pin position -4
Total angle -2° (down tilt)
Example 2
Top grid cam pin position 0
Bottom grid cam pin position +8
Total angle +8° (up tilt)
To Grid
Grid Side
QRP locations
To M1D loudspeaker
To Grid
Grid Side
To Grid
QRP locations
To M1D loudspeaker
To Grid

Meyer Sound M1D Specifications

Acoustical

operating frequency range	32 Hz - 180 Hz
frequency response	35 Hz - 160 Hz ±4 dB
phase response	50 Hz - 120 Hz ±45°
maximum peak SPL	130 dB
dynamic range	>110 dB

Coverage

horizontal coverage	360°
vertical coverage	Varies, depending on array length and configuration

Transducers

low frequency transducer	Two 10" cone drivers with neodymium magnets
nominal impedance	4 Ω
voice coil size	2"
power-handling capability	400 W (AES)

Audio Input

input type	Differential, electronically balanced
maximum common mode range	±15 V DC
input impedance	10 kΩ differential between pins 2 and 3

Amplifiers

amplifier type	Two-channel complementary MOSFET output stages (class AB/bridged)
output power	450 W total
THD, IM, TIM	<.02 %
load capacity	4 Ω each channel

AC Power

safety agency rated operating range	100 - 240 V AC; 50/60 Hz
idle current	0.41 A rms (115 V AC); 0.33 A rms (230 V AC); 0.42 A rms (100 V AC)
max long-term continuous current (>10 sec)	3.2 A rms (115 V AC); 1.6 A rms (230 V AC); 3.7 A rms (100 V AC)
burst current (<1 sec)	5.0 A rms (115 V AC); 2.5 A rms (230 V AC); 5.8 A rms (100 V AC)
ultimate short-term peak current draw	17 A pk (115 V AC); 8.5 A pk (230 V AC); 20 A pk (100 V AC)
inrush current	15 A pk (115 V AC); 13 A pk (230 V AC); 15 A pk (100 V AC)

Weight and Dimensions

width	22.62" (575 mm)
height	13" (330 mm)
depth	17.50" (445 mm)
weight	70 lbs (31.75 kg)