Altronics redback A 4150 2 x 200W Betriebsanleitung - Seite 2

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REDBACK Stereo Amplifiers

Overview:

These compact, stylish, high performance, high fidelity

amplifiers can function as individual stand alone

amplifiers or a high performance stereo amplifier. Both

channels can be configured to operate in "bridge

mode"(mono) providing a massive 550W RMS power to

an 8 ohm load (model A 4150).

Incorporates a multi-staged thermally cued fan forced

cooling system. Output stages are continually thermally

monitored enabling automatic operation of a long life

computer style cooling fan to "off" , "low" or "high" air

flow through the custom designed tunnel heatsink. In

quiescent and low level operation the fans are inoperative.

Over temperature sensing is employed to shut down the

amplifiers in high temperature conditions, eg extreme

overload and/or overdrive mis-use. Re-start is automatic

once normal temperatures are attained.

The circuitry employed in the design protects the integrity

of the amplifiers under the following conditions: over

temperature, overload. The circuit even protects itself

under short circuit conditions. Each channel includes its

own front mounted volume control, recessed treble & bass

control and VU metering. On the rear, each channel

includes combination XLR / 6.35mm phono jacks for

inputs, heavy duty binding posts and Speakon

speaker connectors. In bridge mode operation, only one

volume control remains active.

Visual indication for each channel includes power on,

fault, clip, signal presence and output VU. The speaker

outputs are relay to prevent damage to the connected

speakers in case of a catastrophic failure. The relays

provide silent operation when amplifier is powered on or

off.

C D

LEGEND

1. IEC 240V Mains Connection ( with built in fuse)

2. Output channel 2 (speaker connector)

3. Output channel 2 (binding post)

4. Output channel 1 (binding post)

5. Output channel 1 (speaker connector)

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Channel 1

Channel 2

E F

Features:

• Bridge mode capability

• Independent treble, bass and volume for each channel

• Silent de-thump start up and shut down

• Multi-Stage thermally cued cooling

• LED Bargraph VU meter

• Input signal presence indicator

• 2U 19" rack mount

• Thermal, overload and short circuit protection

• Australian designed and assembled

• 2 Year warranty

Operation:

Using RCA input: Plug the selected source (eg: DVD, CD,

Tuner) directly into the RCA sockets. Ensure the input

selection switch is set to RCA position.

Adjust front panel volume controls to desired level. Adjust

treble and bass for each channel as desired.

Using XLR/6.5mm input: Plug the selected source directly

into the XLR/6.5mm jack sockets. Ensure the input

selection switch is set to correct position.

Adjust front panel volume controls to desired level. Adjust

treble and bass for each channel as desired.

Once signal is applied the "signal present" LED will

style

illuminate on the front panel.

Speakers: Connect appropriately rated speakers to either

the binding post output or the speaker connector for each

channel. Speaker load should be between 4-8Ω. The output

will operate into 2 ohms but if the amplifier is driven hard,

the overload protection is likley to activate.

6. Input selector (RCA or XLR)

7. Input channel 2 (XLR/6.5mm combination socket)

8. Bridged mode switch (on/off)

9. Input channel 1 (XLR/6.5mm combination socket)

10. RCA inputs (channel 1 & 2)

Channel 2

Channel 1

G H

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