Klein + Hummel 0300 D Installation And Operation Manual

O300 D

Active

Studio Monitor

Installation and Operation

Page 2 Active Studio Monitor O 300 D

Safety InstructionsSafety Instructions

Safety Instructions

It is absolutely essential that you read these safety instructions carefully before connecting and using this K+H product. Y our safety depends on it. Furthermore, failure to follow these instructions voids the warranty . T o 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 92 (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, horizontal 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.

• T o 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. A

Fig. B

Active Studio Monitor O 300 D Page 3

Figure 1 Front view

able of Contents:able of Contents:

able of Contents:

Safety Instructions............................................2

Table of Contents..............................................3

1. Installation and Operation..........................4

1.1 Important Notes on Safety.........................4

1.2 Operating Conditions.................................4

1.3 Speaker Placement...................................4

1.4 MAINS Connection....................................4

1.5 MAINS Switch.............................................4

1.6 MAINS Fuse...............................................4

1.7 Level / Room Compensation / Ground Lift ..5

1.7.1 XLR Input.................................................5

1.7.2 BNC Input................................................5

1.7.3 Level ATT(ENUATOR)...........................6

1.7.4 INPUT SELECTOR Switch..................6

1.7.5 EQ (Room Compensation)...................6

1.7.6 GROUND LIFT.......................................7

1.8 CONTROLLER..........................................7

1.8.1 CONTROLLER SELECT Switch........7

1.9 Display Functions......................................7

1.10 Front Grille................................................7

1.11 Care of the Cabinet.................................7

2. Test Measurements......................................8

3. Warranty Information..................................10

4. Technical Specifications...........................11

Page 4 Active Studio Monitor O 300 D

1. Installation and Operation1. Installation and Operation

1. Installation and Operation

1.1 1.1

1.1

It is absolutely essential that you readIt is absolutely essential that you read

It is absolutely essential that you read

and observe the Safety Instructions onand observe the Safety Instructions on

and observe the Safety Instructions on page 2 before connecting or using thispage 2 before connecting or using this

page 2 before connecting or using thispage 2 before connecting or using this

page 2 before connecting or using this device.device.

device.device.

device.

1.2 1.2

1.2

Operating conditionsOperating conditions

Operating conditions

The K+H model O 300 D active studio monitor is intended for use over a range of ambient temperatures from +10° C to +40° C (+50° F to +104° F). During transport or storage, temperatures from -25° C to +70° C (-13° F to 158° F) are permissible.

1.3 Speaker placement1.3 Speaker placement

1.3 Speaker placement

The loudspeaker chassis used in the O 300 D are magnetically shielded, so you are free to set the speakers right next to a video monitor without needing to worry about adversely affecting the screen. Furthermore, the baffle of the O 300 D is designed in such a way as to disperse the sound very evenly not just on axis but over quite a wide listening area. Any engineer who has sat at a console for any length of time will appreciate the considerable freedom of movement afforded by the O 300 D. The cabinet is normally designed to be used in the horizontal position, as the vertical angle of dispersion has intentionally been made narrower than the horizontal. The cabinets are constructed in a left version and a right version. For best stereo imaging and depth of soundstage, position the cabinets with the tweeters on the outside, at ear height, pointing directly at the listening position. If you use the O 300 D as a center speaker, set the cabinet vertically, with the tweeter and midrange dome at the top. In certain applications where there are hard reflective surfaces immediately to the left or right of the speakers, it may make more sense to set the cabinets vertically, in which case the narrower dispersion pattern will help reduce comb-filter effects. When choosing a location for the speakers, be aware that you can take advantage of the integral room-compensating equalizer, which will be described in detail in section 1.7.5 . The cabinet can be mounted directly to a wall or ceiling with the aid of the LH 25 mounting bracket. On the left and right sides of the cabinet you will find threaded bushings of 8 mm diameter to which this bracket attaches. As an alternative, you can use the LH 28 stand-mount adapter

to set the speaker on a standard 35-mm (1-3/8”) tripod. Please make certain that these two threaded openings are always sealed, either with the plastic plugs that come standard with the cabinets or with the screws holding the mounting adapter in place. Otherwise you may experience some air noise and possibly some degradation in low-frequency response.

1.4 MAINS 1.4 MAINS

1.4 MAINS

ConnectionConnection

Connection

The amplifier electronics of the standard European model are set up for an AC line voltage of 230 volts, 50 or 60 Hz. Export versions with other voltages are also available. If the power plug of the mains cable should ever need to be replaced, ensure that the connection to the protective earth is maintained.

1.5 MAINS Switch (POWER)

When you switch on power to the unit, there is a five-second delay before the amplified signal is sent to the drivers. This delay avoids the loud popping sounds that otherwise may be generated by devices earlier in the signal chain as power reaches them. You will find this arrangement particularly useful if your studio uses a master switch to power up all the equipment at once. When power on the O 300 D is turned off, on the other hand, or if there is a general power failure, the signal flow to the speaker is immediately cut off, preventing any loud pops.

1.6 Mains FUSE1.6 Mains FUSE

1.6 Mains FUSE

When replacing the fuse,

first disconnect the

mains cable

and ensure that the new fuse is of

the following type only:

for 230 volts AC 1.6 A Slo-Blo (5 x 20 mm) for 117 volts AC 3.15 A Slo-Blo (5 x 20 mm) for 100 volts AC 4 A Slo-Blo (5 x 20 mm)

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Klein + Hummel 0300 D Installation And Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual