inDESIGN BM8 Series Manuel utilisateur
BM SERIES: INSTALLATION & OPERATION MANUAL
PAGE 2
The inDESIGN BM 8 is a high quality mixer for commercial and
industrial audio applications.
The BM 8 features 8 Mic/line inputs plus 2 stereo inputs.
Microphone input 1 features a mute so that a Microphone
on this channel will mute all other inputs, useful for paging
announcements. The BM 8 provides a mono output. There are
4 alarm triggers; CHIME; ALERT; BELL; and EVAC; connected via
external mounted screw terminals.
The mixer is part of inDESIGN’s Install Series, which also includes
mixer ampliers and power ampliers. These units provide
excellent features and value.
INTRODUCTION
INTRODUCTION 2
IMPORTANT SAFETY
INSTRUCTIONS 3
FRONT PANEL 4
REAR PANEL 5
BLOCK DIAGRAM 6
SPECIFICATIONS 7
CONTENTS
Electrical and Safety Warnings
THESE SERVICE INSTRUCTIONS ARE FOR USE BY QUALIFIED SERVICE PERSONNEL ONLY.
TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT PERFORM ANY SERVICING
OTHER THAN THAT CONTAINED IN THE OPERATING INSTRUCTIONS
UNLESS YOU ARE QUALIFIED TO DO SO.
CAUTION
The lightening ash with arrowhead
symbol, with an equilateral triangle,
is intended to alert the user to the
presence of un-insulated
“dangerous voltage” within the products
enclosure that may be of sufcient
magnitude to constitute a risk of electric
shock to persons.
WARNING: TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE COVER (OR BACK).
NO USER SERVICEABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE PERSONNEL.
AVERTISSEMENT: POUR ÈVITER
LE RISQUE D´INCENDIE OU DE CHOCS
ÈLECTRIQUES, NE PAS EXPOSER CET APPAREIL À
LA PLUIE OU À L´HUMIDITÈ
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 appliance.
BM SERIES: INSTALLATION & OPERATION MANUAL
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IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. To prevent injury please refer to these instructions for electrical and safety information before installing or
operating the apparatus.
6. This apparatus must not be exposed to dripping or splashing liquid.
No object lled with liquid, such as a vase, should be placed on the apparatus.
7. Clean only with a dry cloth.
8. Do not block any of the ventilation openings. Install in accordance with the manufacturer’s instructions.
9. Do not install near any heat sources such as radiators, heaters, stoves, or other apparatuses
(including ampliers) that produce heat.
10. Unplug this apparatus during lightening storms or when not in use for long periods of time.
11. Protective Earthing Terminal:
The apparatus should be connected to a mains socket outlet with a protective earthing connection.
12. The mains plug/appliance coupler is used as a disconnect device, the disconnect device shall remain
readily operable.
13. When not in use and during transportation, please take care of the power cord set, for example, tie up
the power cord set with a cable tie/something similar. It should be kept away from sharp edges and
the like that can cause abrasion of the power cord set. When put into use again, check that the power
cord set is not damaged. If any damage is found, have the unit checked by a qualied service person
to replace the power cord set specied by the manufacturer.
14. The terminals marked with symbol of “ “ may be of sufcient magnitude to constitute a risk of
electric shock. The external wiring connected to the terminals requires installation by a qualied service
person or the use of ready-made leads or cords.
15. Only use attachments/accessories specied by the manufacturer.
16. Check speaker line load prior to connecting to amplier using an impedance meter.
17. Refer all servicing to qualied service personnel. Servicing is required if the apparatus has been
damaged in any way, such as power-supply cord or plug breakage, damage due to liquid or objects
falling onto the apparatus, exposure to rain or moisture, or if the apparatus does not operate normally,
or has been dropped.
18. Correct Disposal of this Product:
This marking indicates that this product should not be disposed with other household wastes throughout
the EU. To prevent possible harm to the environment or human health from uncontrolled waste disposal,
recycle it responsibly to promote the sustainable reuse of material resources. To return your used device,
please use the return and collection systems or contact the retailer where the product was purchased.
They can take this product for environmental-safe recycling.
WARNING: There are no user serviceable parts inside. Refer all servicing to qualied service personnel.
BM SERIES: INSTALLATION & OPERATION MANUAL
PAGE 4
FRONT PANEL
1. Power Switch: Turns mains power on and off.
The round LED light surrounding the Master Volume control indicates the unit is on/off.
2. Level Indicator: To set for optimum working level normal signal should be kept under the 0dB.
The red +3dB will illuminate when signal is excessive.
3. Input 1 to Input 8: The selected Microphone or Line input level is controlled via these knobs.
4. Treble: Adjust the level to suit the required tone of the input. Increasing the treble may improve
intelligibility, decreasing the treble may reduce the onset of high frequency feedback.
5. Bass: Adjust the Bass level to suit the required tone of the input. Increasing Bass may make music
sound fuller, reducing the Bass in reverberant spaces may improve speech intelligibility.
6. Master level: Adjust the overall system volume to suit the environment and use of the system.
BM SERIES: INSTALLATION & OPERATION MANUAL
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REAR PANEL
7. Mains Socket: The unit is connected to the mains circuit with a standard IEC type power lead.
This socket contains a rated slow blow fuse.
**NOTE: Only use a fuse equal to the marked rating
8. Tone Generator Connections: There are four alarm triggers; CHIME; ALERT; BELL; EVAC. These are
connected via the rear panel Phoenix connector. Each alarm is triggered by a (normally open) switch/
relay contact joined between the trigger and the “com” pin.
• A momentalry switch-closure will sound the alarm only ONCE, until it nishes playing out
• A latched switch-closure will loop the alarm indenitely, until the switch closure is removed
If 2 (or more) triggers are enabled, each alarm will sound just once and then stop, then the next highest
priority alarm will sound. The “EVAC” sound is the highest priority, so if “BELL” and “EVAC” were triggered
together, the “BELL” will sound ONCE, then the “EVAC” will continue to sound indenitely. ANY triggered
alarm will override (mute) the audio path of any existing audio on inputs 2-8. Channel 1 audio (which is
the priority) is ducked a little, but still audible while the alarm(s) play out.
9. Input 1 Mic/Line: This microphone input features 48V phantom power for powering Condenser
Microphones. The Vox level pot sets the threshold of the internal Priority Mute level. Microphone 1 input
can mute all other inputs. The input selector switch is used to choose between the Microphone or Line
input. The Microphone input is connected to the Phoenix terminal. The line input can be connected to
the Dual RCA inputs or to the Phoenix terminal. The Dual RCA is internally summed for mono.
10. Inputs 2-6 Mic/Line: The input selector switch is used to choose between the Microphone or Line input.
The Microphone input can be connected to the Phoenix terminal. The line input can be connected to
the Dual RCA inputs or to the Phoenix terminal. The Dual RCA is internally summed for mono.
11. Inputs 7 & 8: These are dual RCA inputs internally summed to Mono.
12. Main Output: The XLR output provides a balanced line level signal.
7. 8. 9.10.
BM SERIES: INSTALLATION & OPERATION MANUAL
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BLOCK DIAGRAM
BM SERIES: INSTALLATION & OPERATION MANUAL
PAGE 7
SPECIFICATIONS
SPECIFICATION
Mic Inputs
Connectors (Mic/Line) Euro Block / RCA
Impedance (Mic/Line) 1kΩ / 13.6kΩ
Gain (Mic/Line) 20dB to 50dB / 0dB to 20dB
Max Input Level (Mic/Line) -28dBu / +10dBu
Frequency Response 20Hz – 20kHz
S/N -86dBu
THD+N 0.3% (20Hz – 20kHz, +4dBu)
Phantom Power 48V
Tone Frequency/Control Range 100Hz / 10kHz
Balanced Outputs
Output Impedance (Mic/Line) 51.1Ω / 150Ω
Max. Output (Mic/Line) -16dBu / +24dBu
S/N 90dB
THD+N 0.01% (20Hz – 20kHz, +4dBu)
Crosstalk -75dB @ 1kHz
Mains Voltage 240 VAC, 50/60Hz, 10 Watts
Unit
Construction All Steel
Size 4.4cm x 48.3cm x 16cm
Weight 1.8kg
Note: 0 dBu = 0.775 Vrms
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