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BM5 mkIII User manual

Setup and Operation

Overview – rear panel

Correct setup and connections is essential to achieve optimal performance from your monitors. Please follow the instructions on the following pages.

  1. Power On/Off switch
  2. AC power Input
  3. Balanced analog input (XLR)
  4. Unbalanced analog input (RCA)
  5. Power Mode switch
  6. Remote
  7. Filter switches
    High Pass
    LF – Low filter setting
    MF – Mid filter setting
    HF – Hi filter setting
  8. Level – Sensitivity switch

Setting up

1/2. Power on/off switch / AC power in

Before switching on, make sure Mains Voltage matches your area’s mains voltage specification.

3. Balanced analog input

Audio Input is via a female XLR connector. The input is electronically balanced with the following connections. The connections are printed on the rear for easy reference.

4. Unbalanced analog input (RCA)

Unbalanced Input via RCA. If your audio source doesn’t have a balanced output, use the RCA input connection.

For best results always use only good quality screened cables and connectors.

Switches

On the rear of the monitor you will find six switches for setting up the monitor for optimum performance in different acoustic environments. Each switch is explained in the following.

5. Power mode switch

ON: The speaker is active and ready to play.

ON/SLEEP: After if no input signal has been present on the input for 20 minutes the speaker enters the “Sleep” mode and saves power. The speaker is invoked and ready to play when a signal is present on the input again. Wake-up time is approximately two seconds.

6. Remote

Usually, active speakers are at max level all the time. By connecting the Dynaudio External Volume control, the volume is conveniently controllable via the remote.

7. Filter switches

LF

This switch controls the bass gain level using shelf-type EQ. The level can be set to +2 dB, 0 dB or -2 dB.

This filter is used to adjust for the proximity of boundaries, so if positioned close to wall or corner, use the -2 dB setting. If positioned far from walls use the +2 dB or 0 position, depending on other equipment, and personal taste.

MF

This switch sets a notch filter, used to compensate for the acoustic effect of a console.

Such placement usually results in a response peak in lower midrange. The MF switch activates a bell shaped notch filter, which can compensate. Use either the -2 or the -4 dB setting. Find the setting that provides the flattest response.

HF

This switch controls the Treble level and it is used to match the high end of the monitor to your other electronic equipment, and your acoustical environment. Use the setting providing the preferred timbre. If the sound is too bright; try to set to -1 dB to reduce treble by 1 dB. If the sound is too dull, use +1 dB setting to raise the High Pass by 1 dB.

HP

This switch sets the lower cut-off frequency of the monitor. It is used to match the monitor to a subwoofer. You can select between 60 Hz or 80 Hz X-over. Flat is used in case you do not use a subwoofer to assist your monitors. When used with a subwoofer it is recommended to use either 60 Hz or 80 Hz filter, thus allowing a higher undistorted sound pressure level.

8. Level trim

Use this switch to match the sensitivity of the BM5 mkIII monitor to your source.

High-output Source

If your source has a high output, set switch to the -10 position to reduce sensitivity by 10 dB.

Low-output source

If your source has a low output, set switch to the +4 position to gain 4 dB more sensitivity.

Protection

The BM5 mkIII monitor has several built in protection systems to reduce the risk of hazard or damage due to overloading.

Both power amplifiers have thermal protection. This activates if a problem should occur, and helps protect both the electronics and the loudspeaker drivers.

The woofer channel has a built in limiter that protects the woofer unit from too much excursion. It works by reducing the gain of the circuit when a certain threshold level is reached.

Positioning

The BM5 mkIII is designed as a precision near-field monitor and can be equally well used in both stereo and surround setups. Optimal performance is achieved when positioned 1 to 3 meters from the listener.

It can be placed on stands or on the meter bridge of a console provided that the meter bridge is sufficiently sturdy. For best results, the speakers should be aimed towards the listener in both vertical and horizontal planes.