Klein + Hummel M 51 D Installation & Operation Manual

058-E0008
Version 04/05

Installation

Operation

Installation

Operation

KLEIN + HUMMEL GmbH

Zeppelinstrasse 12 • 73760 Ostfildern/Germany

Tel.: + 49/(0)711/ 45893 - 0
Fax: + 49/(0)711/ 45893 - 35
eMail: [e-mail]
Internet: www.klein-hummel.com

KLEIN + HUMMEL GmbH

Zeppelinstrasse 12 • 73760 Ostfildern/Germany

Tel.: + 49/(0)711/ 45893 - 0
Fax: + 49/(0)711/ 45893 - 35
eMail: [e-mail]
Internet: www.klein-hummel.com

Active Control Monitor

M 51 D

058-E0008
Version 04/05

Active Control Monitor

M 51 D

1. Safety Instructions

It is absolutely essential that you read these safety
instructions carefully before connecting and using this
K+H product. Your safety depends on it. Furthermore,
failure to follow these instructions voids the warranty. To

ensure safe operation for years to come, keep these
instructions in a safe place for future reference. K+H has
manufactured this product in accordance with IEC 1992 (SEC)
39 standards, then tested and delivered it in safe operating
condition. To maintain it in this condition, you must:

€ observe all safety instructions,
€ use the product only as described herein,
€ have any maintenance, repairs, or modifications performed

only by K+H or other authorized personnel, and

€ ensure that the room in which you use this product is wired

in accordance with the local electrical code.

Warning!

€ When the interior of the cabinet is exposed, touching some

parts can lead to an electric shock.

€ If you need to gain access to the interior electronics of the

unit, always disconnect the unit from any and all power
sources first.

€ Any repairs, maintenance, or other service of the unit when

its interior compartment is exposed may only be performed
safely (in accordance with VBG 4) by authorized technicians
familiar with all the risks involved. Even in an unplugged
state, a fully charged capacitor in the unit can zap the
unsuspecting.

€ Loudspeaker output jacks labeled with the IEC 417/5036

emblem (Fig. A, right) may be carrying dangerously high
voltages. If your unit has this emblem, ensure that any
connections to be made between these jacks and the
speakers themselves are made before powering up the
unit, and are done so only with manufacturer-approved
interconnecting cables.

€ If you need to replace any fuses, ensure that the

replacements are of exactly the same type, value and
voltage as the originals, as spelled out in the technical

specifications at the rear of this manual.
€ Do not use "repaired" fuses.
€ If you do not have any fuses on hand of the specified size,

type, and value, do not hot-wire the contacts in the holder

by short-circuiting them.
€ Certain areas of the cabinet, cover, and rear panel can

achieve extreme temperatures and are therefore marked

with a "HOT" label (Fig. B). Refrain from touching any heat

sink or ventilation grille.
€ High volume levels are known to cause permanent - i.e.

irreversible - hearing damage, especially when listened to

without sufficient breaks. The higher the levels, the more

frequent and extended must be the breaks. Avoid standing

too close to loudspeakers that are being driven at high

levels. If you must be exposed to high sound pressure levels

over an extended period of time, use hearing protection.

Mains Connection:

€ This unit is designed for continuous operation.
€ Ensure that the operating voltage of the unit matches that

of the local mains current (AC line voltage).

1. Safety Instructions

It is absolutely essential that you read these safety
instructions carefully before connecting and using this
K+H product. Your safety depends on it. Furthermore,
failure to follow these instructions voids the warranty. To

ensure safe operation for years to come, keep these
instructions in a safe place for future reference. K+H has
manufactured this product in accordance with IEC 1992 (SEC)
39 standards, then tested and delivered it in safe operating
condition. To maintain it in this condition, you must:

€ observe all safety instructions,
€ use the product only as described herein,
€ have any maintenance, repairs, or modifications performed

only by K+H or other authorized personnel, and

€ ensure that the room in which you use this product is wired

in accordance with the local electrical code.

Warning!

€ When the interior of the cabinet is exposed, touching some

parts can lead to an electric shock.

€ If you need to gain access to the interior electronics of the

unit, always disconnect the unit from any and all power
sources first.

€ Any repairs, maintenance, or other service of the unit when

its interior compartment is exposed may only be performed
safely (in accordance with VBG 4) by authorized technicians
familiar with all the risks involved. Even in an unplugged
state, a fully charged capacitor in the unit can zap the
unsuspecting.

€ Loudspeaker output jacks labeled with the IEC 417/5036

emblem (Fig. A, right) may be carrying dangerously high

voltages. If your unit has this emblem, ensure that any

connections to be made between these jacks and the

speakers themselves are made before powering up the

unit, and are done so only with manufacturer-approved

interconnecting cables.
€ If you need to replace any fuses, ensure that the

replacements are of exactly the same type, value and

voltage as the originals, as spelled out in the technical

specifications at the rear of this manual.
€ Do not use "repaired" fuses.
€ If you do not have any fuses on hand of the specified size,

type, and value, do not hot-wire the contacts in the holder

by short-circuiting them.
€ Certain areas of the cabinet, cover, and rear panel can

achieve extreme temperatures and are therefore marked

with a "HOT" label (Fig. B). Refrain from touching any heat

sink or ventilation grille.
€ High volume levels are known to cause permanent - i.e.

irreversible - hearing damage, especially when listened to

without sufficient breaks. The higher the levels, the more

frequent and extended must be the breaks. Avoid standing

too close to loudspeakers that are being driven at high

levels. If you must be exposed to high sound pressure levels

over an extended period of time, use hearing protection.

Mains Connection:

€ This unit is designed for continuous operation.
€ Ensure that the operating voltage of the unit matches that

of the local mains current (AC line voltage).

€ Always check before connecting the power cable to the

mains socket that the power switch on the unit itself is set
to off ("O").

€ Use the power cable or power supply that came with the

unit to connect to the mains socket (wall outlet).

€ Power supply: a damaged power cable may not be repaired.

Use a new cable.

€ Avoid plugging the mains cable into a power strip that

already has several other power-consuming devices
connected to it.

€ Avoid using extension cables. The unit must be connected

to a mains socket close to it, and that socket should be
freely accessible.

Installation:

€ This product may only be placed on a stable, clean, hori-

zontal surface.
€ Do not expose this product to vibration.
€ Do not operate this product anywhere near water or other

liquids. Do not use it near a sink, swimming pool, bathtub,

or in any damp room or area. Electrical shocks carried

through water can kill. Do not place any beverages

whatsoever on or near this product, as liquids can kill

electronic components.
€ Ensure sufficient ventilation around the product to allow

for adequate heat dissipation, especially near the rear panel

and the sides of the cabinet (minimum of 8 inches from the

nearest wall). The unit may only be installed in a rack if

measures are taken to ensure sufficient ventilation and if

the mounting instructions of the manufacturer are followed.

Do not block or cover any heat sink, fan, or vent.

€ Do not place the product where it will be in the path of

direct sunlight, and keep it a safe distance away from
radiators and other heaters of any kind.

€ If you bring this product from a cold environment into a

warm one (such as from a vehicle into a studio), it is quite
possible that condensation will form inside the cabinet.
Please allow the unit sufficient time for acclimatisation to
room temperature (minimum thirty minutes) before
connecting and powering up.

€ To avoid accidents, do not use any accessory equipment

with this product which is not approved by the manufacturer,
particularly mounting accessories. Do not place this unit
on any unstable platform, cart, stand or table. Should the
unit fall, it can cause bodily injury to persons, or can be
damaged itself.

€ To protect this product from lightning damage during a

thunderstorm or from power surges during an extended
absence, disconnect the power cable from the wall outlet.

Fig. BFig. A

€ Always check before connecting the power cable to the

mains socket that the power switch on the unit itself is set

to off ("O").
€ Use the power cable or power supply that came with the

unit to connect to the mains socket (wall outlet).
€ Power supply: a damaged power cable may not be repaired.

Use a new cable.
€ Avoid plugging the mains cable into a power strip that

already has several other power-consuming devices

connected to it.
€ Avoid using extension cables. The unit must be connected

to a mains socket close to it, and that socket should be

freely accessible.

Installation:

€ This product may only be placed on a stable, clean, hori-

zontal surface.
€ Do not expose this product to vibration.
€ Do not operate this product anywhere near water or other

liquids. Do not use it near a sink, swimming pool, bathtub,

or in any damp room or area. Electrical shocks carried

through water can kill. Do not place any beverages

whatsoever on or near this product, as liquids can kill

electronic components.
€ Ensure sufficient ventilation around the product to allow

for adequate heat dissipation, especially near the rear panel

and the sides of the cabinet (minimum of 8 inches from the

nearest wall). The unit may only be installed in a rack if

measures are taken to ensure sufficient ventilation and if

the mounting instructions of the manufacturer are followed.

Do not block or cover any heat sink, fan, or vent.

€ Do not place the product where it will be in the path of

direct sunlight, and keep it a safe distance away from
radiators and other heaters of any kind.

€ If you bring this product from a cold environment into a

warm one (such as from a vehicle into a studio), it is quite
possible that condensation will form inside the cabinet.
Please allow the unit sufficient time for acclimatisation to
room temperature (minimum thirty minutes) before
connecting and powering up.

€ To avoid accidents, do not use any accessory equipment

with this product which is not approved by the manufacturer,
particularly mounting accessories. Do not place this unit
on any unstable platform, cart, stand or table. Should the
unit fall, it can cause bodily injury to persons, or can be
damaged itself.

€ To protect this product from lightning damage during a

thunderstorm or from power surges during an extended
absence, disconnect the power cable from the wall outlet.

Fig. BFig. A