Myryad MA-500 Owners manual

Myryad Systems Ltd
2, Piper’s Wood
Waterberry Drive
Waterlooville PO7 7XU
Tel [phone]
Fax [phone]
[e-mail]

For further information
please contact
Myryad direct or visit:
www.myryad.co.uk

STANDBY

MA500

Owner’s manual

MA 500 Five Channel Power Amplifier

Five Channel Power Amplifier

• Introduction 3

• Installation and safety notes 3

• Accessories 3

• Rear panel diagram 4

• Power inlet 4

• Power switch 4

• My-Link input/output 4

• Remote trigger control

input/output 5

• Loudspeaker outputs 5

• Line Inputs 5

• Line Outputs 5

• Front Panel Controls 6

• Standby switch 6

• Loudspeaker output

protection and muting 6

• Trouble-shooting guide 7

• Specifications 7

2

CONTENTS

No sound:

• Power turned off or system in standby
mode. Check that the LED in the
STANDBY button is blue.

• The input connection is loose or
missing. Check that the connection is
secure.

• Protection relay has operated because of
a short circuit loudspeaker wire or
amplifier overheating. Carefully check
all wiring after switching the amplifier
POWER OFF to allow it to cool.

• The fuse in the power cord inlet has
failed. Unplug the power cord from both
the wall socket and the amplifier and
pull out the small receptacle below the
power cord inlet. Two fuses should be
visible. The further fuse is the operative
one and should be checked. If it has
failed, replace it with the nearer (spare)
fuse. If this too fails, then return the
amplifier to your dealer for service.

• UK version only: The fuse in the mains
plug has failed. Check and replace if
necessary.

Sound in one channel only:

• Loudspeaker cable pulled loose. Check
all connections, both at the loudspeakers
and amplifier.

• Interconnect cable pulled loose or
making poor contact. Check and, if
necessary, un-plug and re-plug all
relevant cables.

• Amplifier produces less power than
normal. First level temperature
protection activated (see page 6). Reduce
volume, or improve ventilation to allow
amplifer to cool.

Amplifier fails to respond to My Link
remote commands (from e.g. MDP

500

Preamplifier-Processor):

• My-Link cable is loose or not connected.
Check connections on all linked units.

Loud buzz or hum:

• Interconnect cable pulled partially out of
its socket.

• Defective interconnect cable.

Incorrect operation - some functions not
working:

• Control processor latched. Switch off
POWER on rear panel and wait for
about one minute. Then switch POWER
on. Normal operation should resume.

TROUBLE-SHOOTING
GUIDE

SPECIFICATIONS

Some of the most common problems

Five channels driven

Continuous average power output(<0.05% THD, 20Hz-20kHz) …………………………………………………8Ω:100W

…………………………………………………………………………………………………………………………4Ω:150W

IHF dynamic power……………………………………………………………………………………………………8Ω:150W

…………………………………………………………………………………………………………………………4Ω:240W

One channel driven

Maximum continuous power output (1% THD, 1kHz) ……………………………………………………………8Ω:160W

…………………………………………………………………………………………………………………………4Ω:280W

IHF dynamic power……………………………………………………………………………………………………8Ω:180W

…………………………………………………………………………………………………………………………4Ω:320W

Input sensitivity (for 100W into 8Ω)………………………………………………………………………………………1.0V
Voltage Gain…………………………………………………………………………………………………………………29dB
Input impedance …………………………………………………………………………………………………25 kΩ /440pF
Frequency response (20Hz - 20kHz)……………………………………………………………………………………±0.2dB
Signal/Noise ratio (A weighted, ref. 100W) ……………………………………………………………………………110dB
Line inputs………………………………………………………………………………………………………5 x RCA phono
Line outputs ……………………………………………………………………………………………………5 x RCA phono
Control inputs/outputs ………………………………………………………………………My-Link I/O: 2 x RCA phono

…………………………………………………………………………………………DC trigger I/O: 2 x 3.5mm mono jack

Loudspeaker outputs ……………………………………………………………5 pairs of gold-plated 5-way binding posts

Physical specification

Dimensions (width x height x depth) …………………………………………………………………436 x 135 x 368 mm
Weight, Net: ………………………………………………………………………………………………………………20 kg

Power requirements

Voltage (set by internal wiring) …………………………………………………………………………………120 or 230 V

Stock No: OST0012000

7