Klangwerk Ella Owners manual

K L A N G W E R K

Wieslergasse 6 8049 Zürich - Switzerland

Fon +41 (0)43 818 44 90 Fax +41 (0)43 818 44 91

info@klangwerk.ch www.klangwerk.ch

KLANGWERK GmbH

ACTIVE SPEAKER-SYSTEM

ELLA

MANUAL

Content

- Direct Sound - First Reflections

- Placement Examples

Aufstellung

- Stereofonie

- Balance

- Symmetrie

Connections

- Preamplifier

- Signal Cable

- Current Cable

- On-/Off

- On Wall - Free Space

- Listening Angle

- Speaker Axis

Electronics

- 2-way Active System

- Overload Protection

- Level

- Roll-Off

- Electronics Scheme

Listening to Music

- Phase Linearity

- Spaciousness

- Level

- Impulse Behaviour

Safety Instructions / Handling Tecnical Data

Care Instructions Warranty

Protocol

2Placement

- Stability

- Stereo

- Balance

- Acoustical Symmetry

Please read this Manual before unpacking and installing the speakers, especially the chapters Connections and Safety Instructions.

Speakers should be unpacked, installed and moved always by 2 persons. Place the speakers with the back (grey side) on a soft surface. Then you can fix the the base plate with the screws which are packed by. First screw all of them loose and then screw them tight. Then turn the speakers in the vertical position by placing them on the rear edge of the base plate. When you move the speakers in another position, always place them carefully first on the rear edge of the base plate. The other edges could be too weak.

ELLA is an active loudspeaker-system. The main amplifier is integrated in the loudspeaker and has been adapted for it. Therefore the loudspeakers have connections for mains power and the signal. The signal cable has to be connected to the output of the preamplifier or the integrated amplifier. Sometimes also CD-Players have variable preamplifier-outputs. Please refer to the manual of the device.

Preamplifier / Balanced Technology

For the best sound, the preamplifier should have a balanced layout or at least balanced outputs (XLR-Plugs). It should also have a sufficient Voltage Output (max. 24V Peak to Peak) to get the maximum sound pressure level. The balanced technology has several advantages: The signal cable can be as long as needed for optimum placement of the loudspeakers without losses. The Conductors (+ and -) are seperated and shielded. Balanced technology means that the + and the - Signal are amplified separately. In the receiving device (the main amplifier) only the difference between the signals is amplified and therefore any disturbances are filtered out. This operation doubles also the amplitude of the signal which doubles the slew rate of the signal. The sound is more dynamic and clear.

If the preamplifier has no balanced output you can use an interface plug or a XLR-Cinch signal cable . Sometimes also the output voltage of the preamplifier can be increased. Please refer to the manufacturer/distributor of the preamplifier.

Signal Cable / Current Cable

We recommend using our signal and current cables. They have angled plugs what allows the loudspeakers to be positioned close to a wall. Our signal cable has a special construction with 4 conductors which are connected crosswise for an additional protection against disturbances. We deliver the cable to order in any length you require.

On-/Off

When all connections have been made, the devices can be switched on. Please switch on first the preamplifier and then the loudspeakers. The loudspeakers must not be switched off after use because the power consumption is low. For additional comfort and to save energy, all devices should be connected on a switchable power strip. It is preferable to use power strips which are protected against lightning strikes.

Connections

Source

Preamplifier

The placement of the speakers is very important for a high sound quality at home. The following chapters help you to improve the placement. We offer you also a special service: When you mail or fax us a plan (in scale) and photos of your listening room, we will draw our proposals for the loudspeaker placements and sometimes also suggestions for a rearrangement of your room.

Stability

The loudspeakers must be in a vertical position and placed on a solid, flat ground. They should stand firmly and not rock. If the ground is not flat enough and not horizontal, you should place a firm material under the base plate.

Stereo

This 50-year old standard for reproducing music can establish a three dimensional soundstage and a realistic sense for the spaciousness of the original room. Stereophonic reproductions deceive the ear-brain system to get this impression. The human ear can detect the direction and the distance of a sound source because the sound arrives with a different intensity, delay and frequency response on the left and the right ear. When all of these parameters are simulated with two speakers, the brain gets the impression of hearing a phantom sound source at the direction of the original source. When the loudspeakers produce irregularities through poor matching of the left and right loudspeakers, bad placement in the room or other problems, the impression of the original space will not be clear.

Balance

The loudspeakers must have an equal distance to the listening position. A Mono signal, for example a speaker on the radio must appear to be exactly in the middle between the loudspeakers.

Acoustic Symmetry

The acoustic environment of both loudspeakers should be similar. You can here how different the loudspeakers sound in their environment if you listen again to a Mono signal with only the left and then only the right speaker. You can improve the acoustic environment in many ways to get the best results. You can ask a professional acoustician to get ideas for improvements.

With ELLA you can use the Roll-Off selector to get a closer matching between both loudspeakers in the lower frequency range.

Placement

Acoustic shading of the ears = difference in frequency response = difference in sound pressure level = difference in sound delay

sound source

phantom sound source

+ 7 hidden pages