Altronics A 4085 Kullanım Talimatları - Sayfa 4

Amplifikatör Altronics A 4085 için çevrimiçi göz atın veya pdf Kullanım Talimatları indirin. Altronics A 4085 4 sayfaları. Redback phase 4 6 input mixer amplifiers

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REDBACK A 4075-85

ROUBLE

HOOTING

If the REDBACK Phase 4 amplifier fails to deliver the rated performance,

check the following:

No Power, No Lights

Make sure amplifier power switch is on. Make sure mains power switch is

on at the wall. Check the mains and DC fuse. Replace with only the cor-

rect type and rating. Over rated fuses with invalidate warranty.

Distorted Output

Check that the speaker type is correct for the output that you are using (ie.

4-16Ω, 70V or 100V line). Check for any short circuits on the speaker line.

Very Low Output Volume

Make sure that the input is the correct level (check for shorted connectors).

Check for any short circuits on the speaker line.

Check input DIP switches are set correctly.

Check if signal LED on the front panel is lit to indicate there is signal. If it is

not lit there is no signal present.

Continually Blows Fuses

Make sure that the speaker line is not shorted. Check speaker types, rat-

ings and if on correct output.

Amplifier Keeps on Cutting In & Out

Make sure that there is adequate ventilation around the amplifier. Check

the vent slots on the front,top and sides are not covered or blocked and the

fan on the rear is functioning correctly. Check also speaker types, ratings

and for any short circuits on the speaker line.

No Output Volume

Check the Send/Return link is in place. Ensure the input selector dip switch

is configured correctly for each corresponding input.

Ensure remote volume terminals are linked when no remote volume poten-

tiometer is connected.

When connected, check remote volume control is not turned down.

No Switched 24V DC

Check output switch for correct setting.

Check fuse located on rear PCB is not blown.

This product warranty covers a period of ten years after the date of manufacture. In the unlikely event that the amplifier develops a

fault condition do not attempt to repair the unit. Return it to an authorised service agent or our own service department for repair,

along with proof of purchase.

POWER OUTPUTS

A 4075: ...........................125 watts RMS

A 4085: ...........................250 watts RMS

Distortion:......................< 0.5%, @ 1kHz

Output line: ...........70V, 100V or 4 - 16Ω

Line output:...........600Ω balanced, 0dBV

FREQUENCY RESPONSE

Mic inputs: ...............50Hz - 12kHz, -3dB

Line inputs: ..............50Hz - 15kHz, -3dB

SENSITIVITY

Mic inputs:........................3mV balanced

Line inputs:............................100mV-1V

SIGNAL TO NOISE RATIO

Mic inputs: ....> 75dB below rated output

Line inputs: ...> 81dB below rated output

Important Note:

Our contact details are, Phone: 1300 780 999, Fax : 1300 790 999

PECIFICATIONS

OUTPUT CONNECTORS

Speakers: ......................Screw terminals

Line out: ..................................3 pin XLR

INPUT CONNECTORS

Inputs: ....3 pin XLR balanced or 2 x RCA

24V DC power:...............Screw terminals

240V AC power: .....IEC power connector

Muting:PTT via microphone switch contacts

or VOX muting (inputs 1-3)

CONTROLS

Mic inputs:..................................Volume

Line inputs:.................................Volume

Bass:..............................±10dB @ 100Hz

Treble: ...........................±10dB @ 10kHz

Master:........................................Volume

Figure 3 : Remote volume connection. Remove link

from remote volume terminals and connect 500Ω-

1K potentiometer.

Maximum distance from amplifier: 100m

To "remote volume"

terminal on amplifier

rear panel.

NSTALLING THE TONE GENERATOR

A 2073:

1. Remove lid from unit

2. Unscrew tone generator plate from rear panel

3. Locate tone generator 10 way header on board

(this is located at the rear of the main board)

4. Connect ribbon cable header to the 10 way header

on the rear board of mixer (see fig 2).

5. The tone generator is held in by way of 2 screws

(supplied) through the rear panel (via the same

holes that the tone generator plate was attached).

6. Refit lid and secure with screws.

NOTE: Tones are operated by closing contacts and

remain operating whilst contacts are closed. The

A 2073 assumes priority 2 when installed

Power:................................On/off switch

Indicators: ..........Power, fault, VU meter,

signal present, output peak limiting, overtemp

Power Supply:..........240V AC or 24V DC

FUSE PROTECTION

A 4075: ...........................5A AC , 10A DC

A 4085: ........................7.5A AC , 20A DC

Switched 24VDC 1A Internal (both models)

DIMENSIONS

All models:............≈483W x 330D x 88H

WEIGHT

A 4075:.......................................≈14.5kg

A 4085:.......................................≈19.5kg

Colour:............................................Black

*Specifications subject to change without notice

Viewed from the front.

500 to 1k

potentiometer.