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Meyer sound car speaker - audio speaker user manual.
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High Definition
Audio Monitor
The HD-1 High Definition
Audio Monitor* is a self-contained,
precision loudspeaker for near-
field sound reproduction.
Aligned to closely approximate
a true point source radiator, the
HD-1 features exceptionally broad
directivity characteristics. Its time
delay response is tightly controlled,
with minimal deviation from linear
phase across the full frequency
range of its operation. Each unit is
individually factory-calibrated to
ensure unprecedented consistency
of performance. The HD-1 is
within 2 feet of sensitive color
against damage from excessive
suitable for critical applications
video monitors. For applications
amplifier power and ensure
ranging from professional record-
requiring closer proximity to
graceful overload characteristics.
ing to psychoacoustical research.
monitors, an optional steel-
Independent power biamplifiers
The HD-1 is a two-way system
shielded model is available.
maximize system headroom,
comprising an 8-inch cone low-
The HD-1 incorporates line-level
efficiency and damping while
frequency driver and dome tweeter
control electronics mounted within
minimizing distortion. The low
housed in a vented cabinet. The
a rear-panel chassis, including:
frequency amplifier delivers 150
low-frequency driver features an
watts output power, while the high
exceptionally large magnet struc-
• an active balanced input circuit
frequency amplifier provides 75
ture and a 2-inch voice coil for
with switchable sensitivity
watts. Both employ complementary
greatest efficiency and heat dissipa-
(+4 dBu or -10 dBV);
power MOSFET output stages
tion. The tweeter employs a
• an active crossover utilizing
operating class A at low-to-moder-
specially-developed impregnated
optimized pole-zero filter
ate listening levels (<90 dB SPL),
silk dome to minimize breakup and
combinations to achieve acousti-
and class AB at high levels.
cal transparency and linear
The HD-1's free-field frequency
Both drivers are of a proprietary
• independent protection circuits
response is flat within ±1 dB from
design, and are individually
for each loudspeaker driver;
40 Hz to 20 kHz (-3 dB at 32 Hz
selected for maximum linearity.
• dual power amplifiers for
and 22 kHz). It delivers high peak
Their magnet structures employ
SPL with >100 dB dynamic range
sophisticated field-cancelling
and extremely low distortion.
design techniques to minimize
The driver protection circuits
Covers are included for use during
magnetic field leakage, and the
employ thermo-predictive limiters
cabinets may safely be placed
and soft peak clamps to guard
* patents pending
Meyer Sound Laboratories, Inc.
2832 San Pablo Avenue
Berkeley, California 94702


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   Summary of Contents for Meyer Sound HIGH DEFINITION AUDIO MONITOR HD-1

  • Page 1: Operating Instructions

    Their magnet structures employ sophisticated field-cancelling design techniques to minimize magnetic field leakage, and the cabinets may safely be placed Meyer Sound Laboratories, Inc. 2832 San Pablo Avenue Berkeley, California 94702 High Definition Audio Monitor within 2 feet of sensitive color video monitors.

  • Page 2

    Setup & Operation High HD-1 Definition Audio Monitor Dome tweeter Cone low fre- quency driver Indicator LED Locations of HD-1 Loudspeaker Components, Connectors and Controls Power • Set the voltage selector switch before you connect and operate the unit. The HD-1 accepts AC voltages from 90 to 260 VAC, at 50 or 60 Hz, in four ranges.

  • Page 3: Troubleshooting

    Input Connection The HD-1 presents a 10 kohm input impedance at a three-pin XLR-type receptacle wired as follows: Pin 1 Audio common Pin 2 Signal low (-) Pin 3 Signal high (+) Case Earth (AC) ground Shorting any input connector pin to the case may form a ground loop and cause hum.

  • Page 4: Specifications

    Stray magnetic field To obtain service: 1) Contact your dealer or call Meyer Sound. 2) If you are calling Meyer Sound, have the serial number(s) of the unit(s) at hand for reference. Ask for Customer Service, and be prepared to describe the prob- lem clearly and completely.

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