MB-T 8001 - Pregnant FBT - Free user manual and instructions

USER MANUAL MB-T 8001 FBT

Three black microphones with white and blue buttons, arranged side by side on a light background (no visible text or symbols)

MB-T 8004MB-T 8001 MB-T 8008

FBT Audio Contractor proposes a range of desk microphones, with flexible goose-necks and switch, with or without area selection or emergency buttons.

These models are characterised by their high sensitivity and broad frequency response; the transmitter capsule features a cardioid polar diagram.

The microphone bases are fitted with a practical 3-position switch (ON fixed, OFF, ON temporarily) and an emergency ON button.

Both MBT8004, MBT8008, MBT8001 models are preamplified, equipped with dynamic compressor to ensure a high degree of intelligibility, with an internal message generator to mark the beginning and end of the microphone message and for an emergency signal (which if necessary can be customised to the system specifications).

MBT desk microphones can select 4 or 8 individual zones (depending on the model) for selective announcements, as well as a button to enable general announcements. On request, a version controlling multiple zones simultaneously can also be supplied.

I

AVVERTENZE

☐ To prevent annoying sound distortion, position the microphone well clear of power transformers, television sets, electric motors, lighting intensity controls and connecting lines.
☐ Do not turn microphones towards loudspeakers: this could cause feedback and damage to the speakers.
☐ Ensure that power lines are not crushed or damaged by heavy objects.
☐ Do not force control buttons down; always press them lightly.

When connecting microphones, seek the assistance of a qualified electrician, who will ensure that connections have been made properly and that all electrical risks have been eliminated.

Read the instructions contained in this manual carefully before connecting and using the appliance.

FBT declines all responsibility for incorrect installation of the appliance.

APERTURA BASE
STAND OPENING

Diagram showing a mechanical component being lowered into a black plate with screws, labeled '2' (no text or symbols on the diagram itself)

1] LOCK/OFF/MOM Three-position switch; set to the central position (OFF) to turn the microphone off; set to LOCK to keep the switch in a stable position; set to MOM to deactivate the microphone temporarily (until the button is released).
2] ALL - The ALL function is used to broadcast announcements to all system areas while silencing background music. The LED lamp indicates when the function is on.
3] EMG Use this function to activate the emergency mode on all system appliances and to broadcast a memorised signal. The signal can be customised according to system requirements. The LED lamp indicates when the function is on.
4] 1/2/3/4 Buttons for the selection of announcement broadcast areas (overriding background music). The LED lamp indicates when the function is on.
5] Goose-neck and electret microphone with cardioid polar pattern; designed for optimal pure voice reproduction, minimal distortion and good sensitivity.
6] MIC ♩ -Monitoring LED lamp indicating output signal type (microphone or memorised signal).

VISTA INTERNA / INTERNAL VIEW

ATTENZIONE: PER IL COLLEGAMENTO DEL CAVO RIVOLGERSI A PERSONALE QUALIFICATO.
IMPORTANT: FOR LINE CONNECTIONS SEEK THE ASSISTANCE OF A QUALIFIED ELECTRICIAN

Adjusts the alert signal volume to broadcast in selected areas. The potentiometer is located inside the base, and must therefore be calibration during installation.

DIP switch for configuration of alert signals (see table)

CONFIGURAZIONE SEGNALI DI PREAVVISO PRE AND POST ANNOUNCEMENT CHIME

1	2	3	CHIME
			START	STOP
			NO	NO
		ON	MSG1	NO
	ON		MSG1	MSG1
	ON	ON	MSG1	MSG2
ON			MSG2	NO
ON		ON	MSG2	MSG1
ON	ON		MSG2	MSG2
ON	ON	ON	NO	NO

COLLEGAMENTI MORSETTIERA TERMINAL STRIP CONNECTIONS

VISTA INTERNA / INTERNAL VIEW
MB-T 8001

CHIME GAIN

Adjusts the alert signal volume to broadcast in selected areas. The potentiometer is located inside the base, and must therefore be calibration during installation.

DIP switch for configuration of alert signals (see table)

CONFIGURAZIONE SEGNALI DI PREAVVISO PRE AND POST ANNOUNCEMENT CHIME

1	2	3	CHIME
			START	STOP
			NO	NO
		ON	MSG1	NO
	ON		MSG1	MSG1
	ON ON		MSG1	MSG2
ON			MSG2	NO
ON		ON	MSG2	MSG1
ON	ON		MSG2	MSG2
ON	ON	ON NO		NO

COLLEGAMENTI MORSETTIERA TERMINAL STRIP CONNECTIONS

MZU2008

MBT 8008

MBT 8008

FUNZIONE DIN DON DIN DON FUNCTION

Schools, Hospitals, Factories

Scuole, Centri commerciali, Centri sportivi, Palestine, Alberghi Schools, Shopping centre, Sports centres, Gymnasiums, Hotels

Ospedali, Fabbriche, Centri sociali, Scuole Hospitals, Factories, Schools

graph TD
    A["MBT 8004"] -->|1| B["MMZ 8004S"]
    A -->|2| B
    B --> C["zona 1"]
    B --> D["zona 2"]
    B --> E["zona 3"]
    B --> F["zona 4"]
    G["MBT 8004"] --> H["MCA 2240A /1/4 or MCA 4240A"]
    G --> I["MCA 2240A /1/4 or MCA 4240A"]
    G --> J["MCA 2240A /1/4 or MCA 4240A"]
    K["MBT 8004"] --> L["MCA 2240A /1/4 or MCA 4240A"]
    K --> M["MCA 2240A /1/4 or MCA 4240A"]

graph TD
    A["17"] --> B["MIC"]
    B --> C["COMPRESSOR"]
    C --> D["LOCK MEMORY"]
    D --> E["IN OUT"]
    E --> F["ANALOG IN"]
    F --> G["IN OUT"]
    G --> H["LOGIC"]
    H --> I["ACTIVE MIC"]
    I --> J["TRIMMER"]
    J --> K["PHANTOM JUMPER +15V"]
    K --> L["COMPRESSOR"]
    L --> M["SENS CALL"]
    M --> N["LOGIC"]
    N --> O["ACTIVE MIC"]
    O --> P["10K"]
    P --> Q["100K"]
    Q --> R["10K"]
    R --> S["30K"]
    S --> T["90K"]
    T --> U["10K"]
    U --> V["PRIORITY CALL"]
    V --> W["+15V"]
    W --> X["MUSIC OFF"]
    X --> Y["20K"]
    Y --> Z["EMERGENCY"]
    Z --> AA["8 ZONE CONTROLS"]
    AA --> AB["+15V"]
    AB --> AC["POWER SUPPLY"]
    AC --> AD["+5V"]
    AD --> AE["BALANCED OUT"]
    AE --> AF["HOT COLD SHIELD +15V 0 -15V PRIORITY MUSIC OFF"]
    AF --> AG["EMERGENCY ZONE1 ZONE2 ZONE3 ZONE4 ZONE5 ZONE6 ZONE7 ZONE8"]
    subgraph ZONE 1
        AH["LOCK MEMORY SENSE CALL"] --> AI["LOW ACTIVE IN"]
        AJ["ACTIVE MIC ACTIVE LINE PRIORITY LOGIC"] --> AK["HIGH ACTIVE OUT"]
        AL["1N4148"] --> AM["ZONE 1"]
    end

	MBT 8001 MBT 8004 MBT 8008
Characteristics	Switch, emergency button	Switch, emergency button4 zone selection	Switch, emergency button8 zone selection
Microphone	Electret	Electret	Electret
Polar curve	Cardioid	Cardioid	Cardioid
Frequency response	70Hz - 18kHz 70Hz - 18kHz 70Hz - 18kHz
Sensitivity	-63dB ±3dB -63dB ±3dB -63dB ±3dB
Output impedance	600 Ohm	600 Ohm	600 Ohm
Gooseneck	L = 370mm ∅ 9mm L = 370mm ∅ 9mm L = 370mm ∅ 9mm
Warning / Emergency	Chime 2 tonesCarillon 4 tones (emergency)	Chime 2 tonesCarillon 4 tones (emergency)	Chime 2 tonesCarillon 4 tones (emergency)
Output voltage	0dBu (0,775Vrms) balanced	0dBu (0,775Vrms) balanced	0dBu (0,775Vrms) balanced
Power supply	±15 Vdc / 80mA ±15 Vdc / 80mA ±15 Vdc / 100mA
Material	ABS with steel base	ABS with steel base	ABS with steel base
Accessories included	Antipop filter	Antipop filter	Antipop filter
Optional accessories	MultipairShielded cable 5 x 2 x 0,22	MultipairShielded cable 5 x 2 x 0,22	MultipairShielded cable 9 x 2 x 0,22

CENTRI SPORTIVI SPORT CENTRES

graph TD
    A["Travellers Office"] --> B["Left-Luggage Office"]
    B --> C["Booking Office"]
    C --> D["Information"]
    E["ROOF"] --> F["Waiting Room"]
    G["BAR"] --> H["Booking Office"]
    I["INFORMATION"] --> J["Booking Office"]
    K["LINE 1"] --> L["Line 2"]
    M["LINE 3"] --> N["Line 3"]

STAZIONI STATIONS

SCUOLE SCHOOLS

FOUYERS

INDUSTRIE FACTORIES

RISTORANTI RESTAURANTS

CENTRI SOCIALI

YOUTH CENTRES

SUPERMARKETS

SISTEMI PUBLIC ADDRESS

Radar chart with angular divisions (0°, 90°, 180°) and a central pointer, no text or symbols present.

Radar chart with angular divisions marked in degrees (0°, 90°, 180°) and a central pointer at the center (no text or labels)

The aim of a public address system is the communication of spoken announcements. The broadcasting of music for entertainment purposes is, when required, done at a low volume.

The above systems are mainly used in public venues, such as shopping centres, railway stations, hospitals, sports and cultural venues, in which even sound distribution and the intelligibility of the messages broadcast are a priority. In such installations, the dislocation of single loudspeakers in relation to the different frequencies is found to be of greater importance that the high fidelity of the source in relation to the music signal. There is however a tendency to use higher quality components with a more extensive frequency response. Attention should be paid to the acoustic characteristics and the use of the environment; these are the factors that will determine the configuration of the entire project. Stereophonic coding of the signal is not usually used, given that the number of loudspeakers and their position would not allow correct reproduction of the stereophonic image.

An electrical sound system can perform different types of functions:

• Amplification of sound: in churches, theatres, conference rooms, etc.
• High-level diffusion: for addressing the public in factories, the streets (in the case of assemblies), distribution of sound and announcements in sporting venues, communication from moving vehicles.
• Low-level diffusion (background music): hotels, offices, shops, supermarkets, waiting rooms.
• Mixed: with background music combined with the possibility of public address functions, calls, announcements, alarms, etc..

Radar chart showing angular divisions (0°, 90°, 180°) with concentric circles and a central pointer (no text or labels)

cardioid microphone polar pattern

Radar chart with angular divisions (0°, 90°, 180°) and a central pointer, no text or symbols present.

panoramic microphone polar pattern

THE MICROPHONE

The microphone is a device that transforms the variations in acoustic pressure into electric energy, thereby allowing the transmission and amplification of sound

. This conversion of energy operates on the basis of inductive phenomena, in the case of ribbon microphones, or capacity variation, as in the case of condenser microphones. These two types account for the large majority of professional microphones used today.

The ribbon microphone is the most common, due to its good quality and solid structure, that makes it resistant to the effect of atmospheric humidity, and all-round performance.

Due to its low voltage output, the condenser microphone must be used in conjunction with a preamplifier, which is usually incorporated into the microphone itself, to lift the output signal and thereby give an excellent degree of sensitivity. The condenser microphone is powered either by a small battery (usually incorporated) or (if prearranged) by the amplifier by means of the same lines used for the signal (phantom power).

The results are excellent, though are produced at a high cost, which is why the condenser microphone is almost exclusively used for high-level professional applications.

In no case should microphones be oriented towards the loudspeaker or its scattering zone, as this will cause sound feedback. In the event of the latter, lower amplifier volume, adjust the tone control, or if necessary, install a graphic equaliser (or even better, a parametric equaliser) to filter out the frequencies causing feedback.

When connecting the microphone to the amplifier, prefer short, twin-wire shielded lines. Microphone lines should be kept at least 30-50 cm from loudspeaker and other electrical equipment lines. If these lines are particularly long (i.e. >6/8 m), connect the microphone to a balanced amplifier input to eliminate the risk of interference (even with lines dozens of metres long). In the case of longer microphone lines, it will be necessary to use microphone preamplifiers with balanced lines (in this way, distances of over a kilometre can be covered).

EMERGENZA COMANDATA DALLA BASE DA TAVOLO EMERGENCY CONTROLLED BY TABLE BASE

graph LR
    A["DESKTOP BASE"] --> B["EMERGENCY"]
    B --> C["MMZ8004S MIXERS"]
    C --> D["MATRIX 4X4 MMS4004"]
    D --> E["LTU4060 MCA2240A MCA4240A AMPLIFIERS"]
    E --> F["AMPLIFIERS"]
    F --> G["MZU2008 SPEAKERS ZONE CONTROL"]
    C --> H["15V PRT"]
    D --> I["15V PRT"]
    E --> J["15V PRT"]
    F --> K["15V PRT"]
    G --> L["15V PRT"]
    H --> M["EMERGENCY 0"]
    I --> N["OPEN COLLECTOR"]
    J --> O["ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED ENGLISH PROCESSED"]

EMERGENZA COMANDATA DA UN APPARECCHIO QUALSIASI DELLA CATENA
EMERGENCY CONTROLLED BY ANY APPLIANCE OF THE CHAIN

graph LR
    A["MMZ8004S MIXERS"] --> B["MATRIX 4X4 MMS4004"]
    B --> C["LTU4060 MCA2240A MCA4240A AMPLIFIERS"]
    C --> D["MZU2008 SPEAKERS ZONE CONTROL"]
    E["RELALS"] --> F["EMERGENCY"]
    F --> G["OPEN COLLECTOR"]
    H["15V PRT"] --> I["15V PRT"]
    I --> J["15V PRT"]
    J --> K["15V PRT"]
    K --> L["15V PRT"]
    L --> M["15V PRT"]
    M --> N["15V PRT"]
    N --> O["15V PRT"]
    O --> P["15V PRT"]
    P --> Q["15V PRT"]
    Q --> R["15V PRT"]
    R --> S["15V PRT"]
    S --> T["15V PRT"]
    T --> U["15V PRT"]
    U --> V["15V PRT"]
    V --> W["15V PRT"]
    W --> X["15V PRT"]
    X --> Y["15V PRT"]
    Y --> Z["15V PRT"]
    Z --> AA["15V PRT"]
    AA --> AB["15V PRT"]
    AB --> AC["15V PRT"]
    AC --> AD["15V PRT"]
    AD --> AE["15V PRT"]
    AE --> AF["15V PRT"]
    AF --> AG["15V PRT"]
    AG --> AH["15V PRT"]
    AH --> AI["15V PRT"]
    AI --> AJ["15V PRT"]
    AJ --> AK["15V PRT"]
    AK --> AL["15V PRT"]
    AL --> AM["15V PRT"]
    AM --> AN["15V PRT"]
    AN --> AO["15V PRT"]
    AO --> AP["15V PRT"]
    AP --> AQ["15V PRT"]
    AQ --> AR["15V PRT"]
    AR --> AS["15V PRT"]
    AS --> AT["15V PRT"]
    AT --> AU["15V PRT"]
    AU --> AV["15V PRT"]
    AV --> AW["15V PRT"]
    AW --> AX["15V PRT"]
    AX --> AY["15V PRT"]

60mm230mm 2.36inch
60mm 2,36inch
60mm 2,36inch
150mm 5,90inch
150mm 5,90inch
150mm 5,90inch

AL 8000

Alimentatore

Power Supply

Black rectangular electronic device with a small green indicator light on its side (no visible text or symbols)

Power supply +15/-15V for pre amplified microphone bases of MB-T 8000 series

STH 022 Cavi multicoppia schermati
Multipair Shielded Cable

Modello/ Model	Misure/Dimensions
STH 02-022	2x2x0,22
STH 05-022	5x2x0,22
STH 09-022	9x2x0,22

CODE 16113#22/04/15

CE

All information included in this operating manual have been scrupulously controlled; however FBT is not responsible for eventual mistakes. FBT Elettronica S.p.A. has the right to amend products and specifications without notice.