Meyer Sound HD-2 User manual

Features

Self-powered

Two-way biamplified

Controlled directivity

Individually factory-aligned

Patented horn␣driver

Ultra-low distortion

Patented response alignment

Applications

Music recording

Compact Disc™ mastering

Project studios

Surround sound dubbing

Broadcast control rooms

HD-2

High Definition

Mid-Field Monitor

Meyer Sound Laboratories, Inc.

2832 San Pablo Avenue

Berkeley, CA 94702

(510) 486-1166

FAX (510) 486-8356

Both HD-2 drivers are of a proprietary

design and are individually factory-tested

and selected for maximum linearity. The

high-frequency horn driver is of an en-

tirely new configuration, employing a tita-

nium dome and silk suspension in a pat-

ented, low distortion design. It is coupled

to a modified radial horn in the HD-2w,

and to a unique aspherical waveguide in

the HD-2n.

The HD-2’s power amplifiers utilize

complementary power MOSFET output

stages in a class AB configuration. Input

sensitivity is switchable to either +4 dBu

or -10 dBV. A magnetically shielded ver-

sion is available on special order.

The Meyer Sound HD-2 is a high-defi-

nition monitor system that is suitable for

a wide variety of critical mid-field moni-

toring applications. It␣is optimized to ap-

proximate a true point-source radiator

within its coverage area, with a frequency

response of 32␣Hz to 22 kHz (-3␣dB points)

Each unit is individually calibrated, and is

available in both a wide horizontal cover-

age (HD-2w) and a narrow horizontal

coverage (HD-2n) version.

The HD-2 comprises a 10-inch cone

low-frequency driver and 1-inch high-fre-

quency driver 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.

Acoustical (each loudspeaker)

Frequency Response1

Phase Response1

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

Crossover

Transducers

Low Frequency

High Frequency

Power

Physical

Dimensions

Weight

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 specifica-

tions and undergoes rigorous,

comprehensive testing in the

laboratories.

Research remains an integral,

driving force behind all produc-

tion. Meyer strives for sound

quality that is predictable and

neutral over an extended lifetime

and across an extended range.

HD-2 Specifications

Sound

engineering

for the art

and science

of sound.

-3 dB at 32 Hz and 22 kHz

1.5 dB from 50 Hz to 20 kHz

+60°, -0°from 120 Hz to 20 kHz

124 dB peak @ 1 meter

> 100 dB

90°horizontal by 40°vertical (HD-2w)

60°horizontal and vertical (HD-2n)

Electronically balanced, 10k ohms impedance

XLR (A-3) female

Accepts either +4 dBu or -10 dBV, switchable

Complementary power MOSFET output stages

200 watts burst capability

100 watts burst capability

< .02 %

Optimized pole-zero filter combinations to

complement transducer response and to achieve

acoustical transparency and flat phase2

10" diameter cone (2" voice coil)

1" titanium dome horn driver (1" voice coil)3

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), 175 W maximum.

14" W x 20 3⁄4" H x 14" D (+ 2 1⁄2" additional depth

for amplifier chassis)

70 lbs (32 kg)

Physical Dimensions

14.00"

20.75"

14.00"

Note: Handle as shown

on HD-2w only.

16.42"

15.54"

13.20"

9.20"

14.00"

20.75"

HD-2n HD-2w

HD-2

High

Definition

Mid-Field

Monitor

Notes:

1. Subject to room loading.

Specified for 8 feet actual

distance between HD-2

cabinet and a single boun-

dary surface, measured

with one-third octave fre-

quency resolution in fixed

ISO bands.

2. U.S. patent #5,185,801

(additional patent

pending)

3. U.S. patent #4,152,552

Unless otherwise specified,

all acoustical measurements

are performed at 1/2meter

from front baffle on high fre-

quency horn axis. Acoustical

decibels are specified re

20␣

µPa.

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