Meyer Sound HD-1 User Manual

Features

Meyer Sound Laboratories, Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
[phone]
FAX [phone]

The Meyer Sound HD-1 is an entirely
self-contained, high-definition monitor
system that is suitable for a wide variety
of critical sound reproduction applica­tions, from near-field monitoring to
psychoacoustical research. It is optimized
to closely approximate a true point­source radiator, and features a frequency
(amplitude) response of 32 Hz to 22 kHz.

The HD-1 comprises an 8-inch cone
low-frequency driver and dome tweeter
housed in a vented cabinet. An active
crossover, optimized pole-zero response
correction filters, loudspeaker element
protection circuitry and dual power
amplifiers are built directly into the
enclosure.

Both HD-1 drivers are of a proprietary
design and are individually factory-tested
for maximum linearity. Their magnet
structures employ sophisticated field­cancelling techniques to minimize
magnetic leakage, and the cabinets may
be placed within two feet of sensitive color
video monitors.

The HD-1’s power amplifiers utilize
complementary power MOSFET output
stages; they operate class A at low-to­moderate listening levels and class AB at
high levels. Input sensitivity is switchable
to either +4 dBu or -10 dBV.

Unprecedented accuracy

Self-powered

Two-way biamplified

Electronically corrected

Individually factory-aligned

HD-1

High Definition
Audio Monitor

Field-cancelling magnet

Patents pending

Applications

Psychoacoustics research
Compact Disc™ mastering

Music recording

Video & film dubbing

Foley mixing

Sound effects spotting

HD-1 Specifications

12.00"

16.00"

15.65"

14.00"

16.53"

13.20"5.00"

3.85"

1.40"

9.20"

1.40"

Acoustical (each loudspeaker)

Frequency Response

Free Field

Maximum SPL
Signal-to-Noise Ratio
Coverage Angle

Audio Input

Type
Connector
Nominal Input Level

Amplifiers

Type
Power Output

Low Frequency
High Frequency

THD, IM, TIM

1

32 Hz to 22 kHz

-3 dB at 32 Hz and 22 kHz
±1 dB from 40 Hz to 20 kHz
125 dB peak (120 dB @ 1 meter)
> 100 dB (noise floor 20 dBA @ 1 meter)
60° horizontal and vertical

Electronically balanced, 10k ohms impedance
XLR (A-3) female
Accepts either +4 dBu or -10 dBV, switchable

Complementary power MOSFET output stages

150 watts burst capability
75 watts burst capability
< .02 %

2

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.

Crossover

Transducers

Low Frequency
High Frequency

Power

Physical

Dimensions

Weight

Physical Dimensions

Optimized pole-zero filter combinations to
complement transducer response and to achieve
acoustical transparency and flat phase

8" diameter cone (2" voice coil)
1" dome tweeter (1" voice coil)

3-pin IEC male receptacle. Voltage selector switch
for 100/120/220/240 VAC, 50 or 60 Hz (accepts
voltages from 90 to 260 VAC)

12" W x 16" H x 14" D (+ 2" additional depth for
amplifier chassis and HF dome clearance)
51 lbs. (23 kg.)

Notes:

1. Subject to room loading.
Specified for 8 feet actual
distance between HD-1
cabinet and a single
boundary surface.

2. One-third octave resolu­tion.

Unless otherwise specified,
all acoustical measurements
are performed at 1/2 meter
from front baffle on tweeter
axis. Acoustical decibels are
specified re 20 µPa.

Sound
engineering
for the art
and science
of sound.

© 1989 Meyer Sound 04.550.037.01C