Meyer Sound LD-2 - Manual (Page 2)

Master Left and Right Gain Controls
Mid-Hi, Mid-Bass/Aux, Sub Gain Controls
Low-cut Filter for Mid-High & Mid-Bass/Aux Output
Array EQ Filter for Mid-Hi Output
Mute
Polarity
Connector
Type
Impedance
Wiring
RF Filter
Common Mode Rejection Ratio
Signal Presence/clip LED
LED Threshold
LED Full Intensity
Type
Impedance
RF Filter
C CO ON NN NE EC CT TO OR RS S
CONNECTORS Main
Wiring
D DR RIIV VE E C CA AP PA AB BIILLIIT TY Y
DRIVE CAPABILITY Maximum Voltage
Maximum Current
Cables and Load
Connector
Operating Voltage
Maximum Power
Frequency Response
Bandwidth
Phase Response
Dynamic Range 2
Noise Floor 3
THD + N 4
Gain Accuracy
Mute Attenuation
G GA AIIN N R RA AN NG GE E
GAIN RANGE Each Channel
Auxiliary Channels
Dimensions
Weight
Enclosure/Finish
Meyer Sound Laboratories, Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
tel: 510.486.1166
fax: 510.486.8356
e-mail: [email protected]
http: www.meyersound.com
© 2000 Meyer Sound Laboratories, Inc.
All rights reserved
Meyer Sound reserves the
right to alter any specification
without notice.
Please visit our web site at
www.meyersound.com for
up-to-date information.
Meyer Sound Laboratories
has devoted itself to
designing, manufacturing,
and refining components
that deliver superb sonic
reproduction. Every part of
every component is
designed and built to
exacting specifications and
undergoes rigorous,
comprehensive testing
in the laboratories.
Research remains an
integral, driving force
behind all production.
Meyer strives for sound
quality that is predictable
and neutral over an
extended lifetime and
across an extended range.
PR E L I M I N A RY
LD-2 SPECIFICATIONS
LD-2 – 04.088.004.01
A r c h i t e c t u r e
A u d i o I n p u t s
A u d i o O u t p u t s
A C P o w e r
A u d i o
P e r f o r m a n c e
P h y s i c a l
N o t e s
–12 to +6 dB
–12 to +6 dB
160 Hz high-pass, –12 dB/octave, Q = 0.8
6 dB cut at 220 Hz, 0.6 octave bandwidth
Mute switches for Master, Mid-Hi, Mid-Bass/Aux, and Sub outputs
Toggles for Sub and Mid-Bass/Aux outputs
1 female XLR per channel
Differential balanced input circuit
10 kΩ differential (between pins 2 and 3)
Pin 1: chassis/earth ground; Pin 2: signal; Pin 3: signal
Common Mode: 425 kHz low-pass; Differential Mode: 142 kHz low-pass
> 80 dB (typically 90 dB); measured in the range 50 Hz – 1 kHz
(Variable intensity; monitored at the input for each channel)
–26 dBV (50 mVrms) pink noise or sinewave
–10 dBV (300 mVrms) pink noise or sinewave
Balanced, cross-coupled simulated transformer topology
10Ω balanced (between pins 2 and 3)
Pins 2 and 3 shunted to chassis via 500 pF capacitance
1 female XLR/channel
Pin 1: chassis/earth ground; Pin 2: signal; Pin 3: signal
1600 Ω Load: ±22.5 Vpk (+24 dBV, +26.2 dBu sinewave)
No Load: ±25.0 Vpk (+25 dBV, +27.2 dBu sinewave)
±70 mApk (10 Vrms into 200 Ω)
Drives > 100,000 pF (> 1000 ft cable) without instability or distortion
IEC 320 (line, neutral/line, earth)
90 – 125 VAC / 180 – 250 VAC (selectable with rear panel switch);
50/60 Hz
25 Watts; Fuse: 5 x 20 mm, T 250 mA, 250 V, time-lag
< ±0.2 dB 20 Hz – 20 kHz
DC to 60 kHz (–3dB)
< ±3° from pure 3 µsec delay (DC – 20 kHz)
> 120 dB
> –95 dBV A-weighted; > –90 dBV un-weighted
< 0.005% (typically 0.002%)
< ±0.15 dB at +6 dB gain; < ±0.25 dB at 0 dB gain
> 80 dB
–12 to +6 dB
Height: 1.75” (1 rack space); Width: 16.75”; Depth: 6.96”
13.5 lb (6.1 kg); shipping: 15 lb (6.8 kg)
Black 16-gauge steel chassis; 1/8” aluminum rack ears
1
1. 0 dBV = 1Vrms; 0 dBu = 0.775 Vrms; 0dBm = 1 mWrms
2. Ratio of maximum sinewave to A-weighted noise floor
3. Level set to unity gain (0 dB)
4. 0 dBV, 1 kHz sinewave input. Gain at +12 dB main channel