Magenta Margules ACRH-3, Quick Start Manual

ENGLISH - 15

REAR PANEL: CONECTIVITY (CONT):

CONECTIVITY:

9: Line Level Signal Output (DIRECT OUTPUT): 

This output is controlled by the preamp stage input selector, and  

    bypasses the volume control. This output connectors can connect a    

    surround processor equipment and/or integrate a high-performance audio  

    system with an audio / video zone or component.

10: Electric Power Input / Outputs

      (127VAC 15 AMP MAX): 

The input port feeds an electric current to power the equipment. The output is to    

        connect a Magenta QR-1 or QR-2 power conditioners or other equipment that needs to  

        be turned on simultaneously as the ACRH-3. This electrical output is controlled by    

        turning on the equipment and has a maximum capacity of 15AMP / 1800 W.

OPERATION:

When your ARCH-3 is connected for the first time, it is necessary to initialize the system, this is done by pressing the input 

selector button.

Check that the volume is at the minimum level to avoid a sudden bump of sound that could damage your speakers.

As long as the ACRH-3 is connected to the electrical supply network, the valves´or vacuum tube´s filaments will always be 

working, so the ignition will be immediate. The life expectancy of the valves or vacuum tubes does not decrease due to this 

fact, instead it increases since the electronic cloud of the cathode is already formed when the high voltage is applied (when 

it is turned on).

Turn on the equipment using the power switch on the remote control or the front of the equipment. If the power supply is 

interrupted, allow the bulbs' filaments to heat up for a few seconds.

Select the input source by pressing the selector switch on the front panel or the remote control unit. This will turn on the blue 

light on the front panel indicating the selected source.

The blue light in the upper left corner indicates that the unit is active. Now the high voltage at the preamplifier and the power 

amplifiers are operational.

General Comments:

The unit is always warm, so it should be placed in a ventilated area, with at least one inch of air on the top and sides of the 

equipment, to allow airflow and avoid overheating.

Always place your unit on a firm platform to avoid external vibrations, or that can impront an unwanted tonal character.

You can alter the tonal characteristics by placing the unit on different types of stands such as rubber feet, spikes, etc.

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2 3

4

6

7

8

5

9

10

RIGHT

OUTPUT SPEAKERS

4Ω min.

Serial Number

ACRH

FUSE

3 AMP

LEFT

FUSE

3 AMP

FUSE

6 AMP

AMP

IN

AUX 1

LEFT

RIGHT

AUX 2

AUX 3

127 VAC 15 AMP MAX

AUX 4

AUX 5

PHONO

DIRECT

OUTPUT

GND

PHONO

PRE OUT

Designed and Made by Margules

Morelia 38-4 Col. Roma

México, DF. C.P. 06700

Tel.: (55) 5514.7448

www.margules.com

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2

For service refer to qualified personnel

Lethal Voltage Inside

Do Not Open !

MARGULES

OPERATION (CONT):

To minimize unwanted noise or interference in the system:

1.- Avoid excessive length in the interconnection cables.

2.- Avoid having the cables near the alternating current line.

3.- Avoid ground feedback loops between components.

4.- Interconnect cables must be shielded and in good condition.

Burn-In Process:

About 150 hours of music playback are required. Having the unit on without music does not work for proper burn-in.

Vacuum Tube durability:

We recommend changing both vacuum tubes every three years for optimal performance, although they may last a more 

extended period.

Type of compatible tubes or valves:

The unit has 12AU7 tubes or the ECC83 equivalency, do not use any other type of tube.

IMPORTANT:

 Never remove the tubes from the circuit while the equipment is connected to the power outlet.

The unit has an AC outlet for associated equipment interrupted with a capacity of 15 amps, so you will be able to control the on 

and off of the equipment connected to the ACRH-3.

It is usual for the input indicator to be lit while the unit is connected to the power supply.

If a sudden power loss causing two or more selection indicators to light, unplug the unit from the power outlet and redo the 

initialization procedure (p. 15).

The unit's power cord can be exchanged for higher quality to improve the tonal characteristics.

TROUBLESHOOTING:

The equipment does not turn on:

Check that the power supply is correct and that the power cord is connected to a live electrical outlet.

Check the operating fuse (page 14 port 7). If the fuse is damaged, replace it with another of the same value (250V 6 AMP)

There is no sound:

The selector light is on, but there is no sound: Ensure the unit is turned on by checking the light in the upper left corner. Check 

that the input signal is connected to the correct input.

Check the jumper between the PRE OUT 1 output and the AMP IN input. This jumper is pre-installed from the factory (page 14 

ports 2 and 3).

If more than one indicator is lit:

A transient in the electrical current caused an error in the remote control logic.

Restart the unit by unplugging it from power and plugging it in again.

Sound has distortion at any volume level:

The sound has a lot of distortion at any volume level.

Check  the auxiliary type input, such as a CD or any type of source, except the direct one from the pickup, is not connected to 

the phono input.