Dynaudio Acoustics BM14S User Manual

BM14S

Operating Guide

Contents/Inhaltsverzeichnis

English

1. Important Safety Instructions . . . . . . . . . . . . . . . . . . . . . 1

Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2. About the BM14S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3. About this operating manual . . . . . . . . . . . . . . . . . . . . . . 3

Used signs and symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

4. Getting started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Unpacking the subwoofer . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Grille . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Controls and connections . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Connecting the subwoofer . . . . . . . . . . . . . . . . . . . . . . . . . 6

5. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Switching the subwoofer on . . . . . . . . . . . . . . . . . . . . . . . . 8

Adjusting the volume (Gain) . . . . . . . . . . . . . . . . . . . . . . . . 9

Selecting the subwoofer cut-off frequency

(Lowpass) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Setting the phase (Phase). . . . . . . . . . . . . . . . . . . . . . . . . 10

Setting the satellite cut-off frequency (Highpass) . . . . . . . 10

6. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Cleaning the subwoofer . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Changing the fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

8. Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

9. Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . 14

Deutsch

1. Über den Subwoofer BM14S . . . . . . . . . . . . . . . . . . . . . 15

2. Zu dieser Anleitung . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Verwendete Zeichen und Symbole . . . . . . . . . . . . . . . . . 15

3. Sicherheitshinweise. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Bestimmungsgemäßer Gebrauch . . . . . . . . . . . . . . . . . . 16

Allgemeine Sicherheitshinweise. . . . . . . . . . . . . . . . . . . . 17

4. Vor dem Betrieb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Auspacken . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Stoffabdeckung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Anschluss- und Bedienelemente . . . . . . . . . . . . . . . . . . . 19

Den Subwoofer anschließen . . . . . . . . . . . . . . . . . . . . . . 20

5. Bedienung. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Ein-/Ausschalten (POWER ON) . . . . . . . . . . . . . . . . . . . . 22

Lautstärke einstellen (Gain) . . . . . . . . . . . . . . . . . . . . . . . 23

Subwoofer-Grenzfrequenz wählen (Lowpass) . . . . . . . . . 23

Phase einstellen (Phase) . . . . . . . . . . . . . . . . . . . . . . . . . 24

Satelliten-Grenzfrequenz anpassen (Highpass). . . . . . . . 24

6. Im Falle einer Störung . . . . . . . . . . . . . . . . . . . . . . . . . . 25

7. Pflegen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Den Subwoofer reinigen. . . . . . . . . . . . . . . . . . . . . . . . . . 26

Die Sicherung ersetzen . . . . . . . . . . . . . . . . . . . . . . . . . . 27

8. Garantie. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

9. Technische Daten. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Dynaudio Acoustics BM14S

1. Important Safety Instructions

English 1. Important Safety Instructions

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accordance with the

manufacturer's instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or

other apparatus (including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A

polarized plug has two blades with one wider than the other. A grounding type
plug has two blades and a third grounding prong. The wide blade or the third
prong are provided for your safety. If the provided plug does not fit into your
outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plugs,

convenience receptacles, and the point where they exit from the apparatus.

11. Only use attachments/accessories specified by the manufacturer.

12. Use only with the cart, stand, tripod, bracket, or table specified by the

manufacturer, or sold with the apparatus. When a cart is used use caution when
moving the cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long periods of

time.

14. Refer all servicing to qualified service personnel. Servicing is required when the

apparatus has been damaged in any way, such as power-supply cord or plug is
damaged, liquid has been spilled or objects have fallen into the apparatus, the

Operating Guide

apparatus has been exposed to rain or moisture, does not operate normally, or
has been dropped.

15. WARNING: To reduce the risk of fire or electric shock, this apparatus should not

be exposed to rain or moisture and objects filled with liquids, such as vases,
should not be placed on this apparatus.

16. To completely disconnect this equipment from the mains, disconnect the power

supply cord plug from the receptacle.

17. The mains plug of the power supply cord shall remain readily operable.

18. Danger: To reduce the risk of electric shock, do not remove the back panel and

do not expose the apparatus to rain or moisture. No user serviceable parts
inside. Refer servicing to qualified personnel.

Dynaudio Acoustics BM14S 1

2. About the BM14S

Intended use

The Subwoofer Dynaudio Acoustics BM14S is a loudspeaker with integrated amplifier
for the reproduction of deepest audio frequencies. It was developed for the use in a
professional studio environment and may be operated also only there. With not
intended use security and operability cannot be guaranteed.

2. About the BM14S

The BM14S subwoofer is intended to operate with the BM series monitors. The
BM14S will complement stereo and multichannel monitoring equally well and when
daisy-chaining of subwoofers is needed, it sports a low level LFE input/output.

For significant control and enhancement of the general performance, the BM14S is a
closed cabinet type. This creates an internal pressure by which the woofer gains a
considerable amount of precision when it comes to the reproduction of low frequency
signals. This precision is easily audible and it augments the feeling of reality that the
listener experiences.

The BM14S is very suitable for the following production environments:

• Post Production

• Music Recording and Mixing

• Film Editing (smaller rooms)

• DVD authoring and Mastering

• Multichannel Production (Audio or Audio for pictures)

• Broadcast

• Edit suites

• OB vans

2 Dynaudio Acoustics BM14S

3. About this operating manual

3. About this operating manual

Used signs and symbols

Safety signs

The exclamation point within an equilateral triangle is intended to alert the user to
the presence of important operating and maintenance (servicing) instructions in the
literature accompanying the product.

The lightning flash with arrowhead symbol within an equilateral triangle is intended
to alert the user to the presence of uninsulated “dangerous voltage” within the
product's enclosure that may be of sufficient magnitude to constitute a risk of electric
shock to persons.

Signal words

CAUTION

CAUTION

WARNING

DANGER

Indicates a potentially hazardous situation which, if not avoided, could result in
damage to equipment.

Indicates in combination with a safety sign a potentially hazardous situation which,
if not avoided, could result in minor or moderate injury or damage to equipment.

Indicates in combination with a safety sign a potentially hazardous situation which,
if not avoided, could result in death or serious injury.

Indicates in combination with a safety sign a hazardous situation which, if not
avoided, will result in death or serious injury.

Text markups

Note: Additional information is provided, which is important to fully understand the

X The arrow will identify steps to be performed. Please follow the instructions carefully.

1.

2.

3.

italic The result of a step is printed in italics. This may help you verify the success of a step.

bold Controls are printed in bold type face.

BM14S and how to operate it.

Multiple steps that should be performed consecutively are numbered. Please follow
these instructions carefully.

Dynaudio Acoustics BM14S 3

4. Getting started

1

2

3

4. Getting started

Unpacking the subwoofer

1. Unpack the subwoofer on a clean, even and soft area; floor carpeting is very

suitable.

2. The packaging should be opened from the top (1). Remove all accessories that

come packed with the subwoofer (such as AC power cord and grille). Do not
remove the top part of the protective material.

3. With the protective material still in place but with accessories removed, carefully
tilt the packaging on its side (1) and tilt again to turn it upside-down (2). Ensure
that no part of the top-cover is obstructing the opening at the top.

4. The outer packaging can now be lifted away from the subwoofer itself (3).
Remove the protective material that now is on top.

5. Open the bag and remove such from around the base of the subwoofer.

6. Again, carefully tilt the subwoofer on its side and again to turn it onto its feet.

Note that the top part of the protective material will now come off easily so ensure
that the subwoofer doesn’t drop or slide away in the process.

Check that the contents are complete:

• Subwoofer: The factory-set power requirements (refer to label on rear of
subwoofer) should correspond for the region where the subwoofer was
purchased. Refer also to chapter “Important Safety Instructions” on page 1.

• Front baffle grille.

• AC mains lead. The supplied lead should be suitable for the region where the
subwoofer was purchased.

• Owners Manual.

Grille

The subwoofer can be operated without the grille. However, it is recommended that
the grille is mounted during normal use to help prevent accidental damage or dirt
settling on the cone of the loudspeaker. With subwoofers, the influence of the grille on
the sound is virtually negligible.

To remove the grille:

X Gently pull the grille at all corners.

To fit the grille:

X Line up the studs with the corresponding front baffle holes.
X Gently push the grille in at all corners.

Note: Be careful when mounting the grille not to touch the cone of the loudspeaker

itself.

4 Dynaudio Acoustics BM14S

12

11

10

9

10

9

4. Getting started

Controls and connections

1 AC IN

Mains power input.

2POWER ON (Main)

Main power switch (to switch the subwoofer manually on and off).
LED shows operation mode:

• red: subwoofer switched on and in mute mode

• green: subwoofer is activated

3 Power (Mode)

• On: subwoofer is permanently on

• Auto: subwoofer switches on when signal is detected

4Gain

Subwoofer volume level.

3

4

5

6

7

8

5 Lowpass

Subwoofer lowpass frequency: continuously variable from 50 to 150 Hz.

6 Phase

Phase setting: phase can be set to 0° or 180°.

7Mode

Subwoofer operation mode LFE or Slave:

• LFE: setting for normal use and Master use

• Slave: setting for second and all following subwoofers

8Highpass

Allows cutting off low frequencies of the signal provided at the

• Flat: signal is not processed

• 60: cut-off frequency at 60 Hz

• 80: cut-off frequency at 80 Hz

9 SAT/SUB (output)

Output for satellite system to be connected. This signal is processed according to
the Highpass setting.

10 SAT/SUB (input)

Input for full bandwidth signal. This signal will be processed according to the

Highpass setting and provided at the SAT/SUB output.

11 LFE

• LFE/Slave: input for LFE signal

• Slave: output to next subwoofer if installed

Terminal pinout (sockets 9, 10 and 11)

1 = 0 2 = + 3 = –

SAT/SUB

output:

Dynaudio Acoustics BM14S 5

4. Getting started

Connecting the subwoofer

CAUTION

Damage due to improper connections!

Improper connections may damage the device.

X Set the mains power switch to OFF before connecting the BM14S.
X Only switch the subwoofer on (mains power switch to ON) after all connections

and set up steps have been properly completed.

Mode

LFE/Slave

+

Lowpass

+

Gain

Phase

+

SAT/SUB

SAT/SUBSlave

Highpass

Subwoofer inputs

The BM14S provides two different signal inputs:

LFE/Slave

This input allows the LFE (Low Frequency Effect) channel to be connected.
The signal is:

• processed and reproduced by the subwoofer

• routed to the Slave output for a second subwoofer to be connected.

The Lowpass control has no impact on this input.

SAT/SUB

This input allows the connection of a full bandwidth signal.
The signal is:

• reproduced by the subwoofer,

• routed to the SAT/SUB output terminals. Low frequencies are cut-off according to
the Highpass setting,

• routed to the Slave output for a second subwoofer to be connected. High
frequencies are cut-off according to the Lowpass setting.

6 Dynaudio Acoustics BM14S

LFE

4. Getting started

Connecting a single subwoofer

Connecting as LFE channel (1)

LFE

1

X Connect subwoofer to LFE/Slave input.

Connecting as subwoofer for satellites (2)
X Connect full bandwidth signal to SAT/SUB input.

Sub reproduces sum of right and left signal.

2

Stereo

Note: • You can also use both connection types. The signals will be combined in

the BM14S and routed accordingly. This allows the BM14S to reproduce
both the LFE channel information as well as the bass range of the
connected satellite system.

•Use Slave mode if you want to use an external bass management
system.

Multiple subwoofer connections

The BM14S can be used stand-alone or together with multiple subwoofer units.
Using multiple units may be helpful if the listening room is quite large or has difficult

Sub...
(Slave)

acoustic conditions.
When using two or more subwoofers, the first one (designated “Master”) controls the

following subs (designated “Slave”) via a subwoofer cable.

To connect multiple subwoofers:

Stereo

1. Connect the first subwoofer as described before.

2. Set Mode switch of first subwoofer to LFE.

3. From the Slave output of the first subwoofer connect a XLR cable to the
LFE/Slave input of the following subwoofer. This one now becomes the slave.

4. Set the Mode switch of the second subwoofer to Slave.

X Further subwoofers can be connected in the same way. Set the Mode switch of

all following subwoofers to Slave respectively.

Sub 1

(Master)

Sub 2

(Slave)

Note: • When using multiple subwoofers in a Master-Slave setup, it is

recommended that the subwoofers are all the same model.

• If you wish to use multiple subwoofers with full individual control, set the

Input switch for all to the LFE position. From the source subwoofer
output, use a Y-connector.

Dynaudio Acoustics BM14S 7

5. Operation

LFE

Stereo

1.

To power amplifier
or active speakers

Connecting loudspeakers

If your source provides bass management, you can use the BM14S LFE input alone
in LFE or SLAVE mode, depending on the management system capabilities. Avoid
double processing if possible.

To connect loudspeakers

1. Connect the subwoofer (see “Connecting a single subwoofer” on page 7).

2. From the subwoofer SAT/SUB output connect a XLR cable to the inputs of the

power amplifier you use for your speakers.

Note: The signals connected to the inputs are provided at the Slave output for

connecting another subwoofer. See page 7 to learn more about connecting
multiple subwoofers.

5. Operation

Switching the subwoofer on

Once you have ensured yourself that all necessary connections have been made, the
subwoofer and the connected components can be switched on.

2.

1. Connect the subwoofer to the mains power.

2. Switch the subwoofer on with the main POWER switch on the rear panel.

The status LED on the rear of the subwoofer will light up red.

3. Select a power mode with the Power switch on the rear panel.

3.

Power modes

• On: the subwoofer is switched on permanently

• Auto

– When a music signal is detected, the internal amplifier is activated

automatically. The status LED on the back of the subwoofer will light up green.
As long as a music signal is available on the subwoofer’s input, it will remain
switched on.

– After 15 to 20 minutes of not sensing any input music signal, the subwoofer will

switch itself to Standby mode automatically. The status LED on the back of the
subwoofer will light up red.

Note: To switch the subwoofer completely off, set the main POWER switch to the

OFF position.

8 Dynaudio Acoustics BM14S