AUSTRALIAN MONITOR OPAL Bedienungsanleitung

fu Australian Monitor

Opal S eries

POWERAMPLIFIERS

Australian opals are among the most beautiful and

sought-after iridescent gems in the world. Of all the

known precious stones, only opal can show the complete

range of spectral hues in a glorious balance.

The Australian Monitor Opal Series is a gem among

amplifiers, the culmination of countless hours of

dedicated research and development.

Without sacrificing Australian Monitor's legendary

quality or design, the new affordable Opal Series

response combined with a high slew rate, and high

damping factor for accurate loudspeaker driver control.

Construction

Built to the highest standards the Opal Series

utilises a 2 unit high, module monocoque chassis.

Its symmetrical construction features heavy gauge

aluminium front and rear panels integrated with a

rigid folded steel pan and steel side bracing.

brings within everyone's reach superlative sonic

performance, unmatched dynamics and of course our

renowned "all terrain" construction techniques.

Audio Reproduction

The Australian Monitor design team have drawn on

a wealth of experience in sophisticated audio circuit

designs for CD mastering facilities, music recording

studios and other esoteric audio monitoring

situations. ln the new Opal Series they have created

one of the finest high definition audio signal paths

available, exhibiting dazzling transients, timbral

accuracy and outstanding sonic integrity.

The MOSFET-based circuit design with double-

balanced current-mirror drive circuit provides wide

bandwith, ultra low THD / lMD, super fast transient

Cooling

Fourcustom aluminium alloy heatsinks, providing a6.0

metre perimeter with over 500,000 square mm of

convection cooling area. lnternal airflow is assisted by

a signal-dependent, silent axial fan, providing "on

demand" cooling.

Power Supply

At the heart of the Opal 2802 is a high efficiency 800VA

toroidial mains transformer, the current source for two

massive 15,000 microfarad computer grade reservoir

capacitors. While maintaining high power output, this

topology minimises ELF emissions to ensure your

safety.

Opal 1202

Output Power

Test

E.l.A. lkHz, <0.05% THD

(pre-stress at rated power for 5 min)

single channel driven

double channel driven

Bridge mode

Dlstortlon

@ 0.5 dB below clipping re 4 ohms

THD @ 1 kHz

IMD SMPTE (60 Hz / 7 kHz 4:11

IMD CCIF (14 kHz / 15 kHz 1:1)

Frequency Response

-0.35, -0.15d8

Damping Factor

@ 1 kHz, 8 ohm load

lnput lmpedance

Line to Line, Balanced

lnput Sensitlvity

I ohms, rated power

lnput CMRR

@1kHz

Voltage Galn

@lkHz

Output Rlee Tlme

2O RHz square wave 1 13Vpp (leading edge)

Slew Rate

20 kHz square wave 145Vpp (leading edge)

SlgnaUNolse Ratlo

linear (30 kHz)

A weighted

Crosstalk

@1kHz

Welght

Net

Packed

Dlmenrlone

excluding handles

(19 inch EIA rack mounting, 2 units high)

Opal 2802

Power Power

Eohm 4ohm

150W 220W

130W 175W

340W

<0.005%

<0.008o/"

20 Hz - 20.kHz

250:1

25 kohm

(+adB) 1.23Vrms

>81.5db

31dB

102d8

104d8

<-90d8

13 kg

15 kg

HxWxD

3.5 x 19 x 14.8 inch

88 x 482 x 375 mm

Output Power

Test

E.l.A. 1kHz, <0.05% THD

(pre-stress at rated power for 5 min)

single channeldriven

double channel driven

Bridge mode

Dlstortlon

@ 0.5 dB below clipping re 4 ohms

THD @ 1 kHz

f MD SMPTE (60 Hz /7 kHz 4:1)

IMD CCIF (14 kHz / 15 kHz 1:1)

Frequency Response

-0.35, -0.15d8

Damplng Factor

@ 1kHz,8 ohm load

lnput lmpedance

Line to Line, Balanced

lnput Sensitlvity

I ohms, rated power

lnput CMRR

@1kHz

Voltage Gain

@1kHz

Output Rlee Tlme

2.4pS 20 kHz square wave 113Vpp (leading edge)

Slew Rate

35V/pS 20 kHz square wave 145Vpp (leading edge)

SlgnaUNoise Ratlo

linear (30 kHz)

A weighted

Crogatalk

@1kHz

Welght

Net

Packed

Dlmenalone

excluding handles

(19 inch EIA rack mounling, 2 units hlgh)

Power Power

Sohm 4ohm

250W 320W

200w 280w

560W

<0.005o/o

<0.005%

<0.008o/o

2O Hz - 2OkHz

250:1

25 kohm

(+adB) 1.23Vrms

>81.sdb

32dB

2.apS

35V/pS

102d8

104d8

<-90d8

15 kg

17 kg

HxWxD

3.5 x 19 x 14.8 inch

88 x 482 x 375 mm

**w@ ffiErc *rll.ats

ttaVlr

a L.a t-t

Features

- Butfered 21 position front-panel stepped attenuators

- Balanced XLR inputs

- Symmetrical construction for even weight distribution

- 1 Watt / Clipping status indicators

- Binding post outputs

- Silent convection cooling with fan assist under heavy

load

Options

1.70 I 100 Volt line transformer

2. HP-1 i LP-1 Filter cards

3. Speakon output connectors

Protection

- lnput overvoltage protection

- Fault protection and indication

- lntemal fuses on each supply rail

- Overload protection and indication

- Short circuit protection and indication

- lndependent thermal sensing on each channel with

safety mute

AUSTRALIAN MONITOR PTY LTD

29 HOPE STREET ERMINGTON, N.S.W.2115

SYDNEY AUSTRALIA

Phone 61-2-9874 9355

Fax 61-2-9874 9366

Email ausmon@mypostbox.@m

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