Baldwin Boxall Mitre Amplifiers Operating Instructions Manual Download | Manualshive

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Issue 2

Volume Restoration Relay.

This relay will energise whenever an input is accessed if the “Vol. Rest / Busy” switch (2) has been
selected.
The relay contacts can switch either an AC or DC signal providing it does not exceed 100V @ 5A.

Here are 3 examples :

Example 1:

3 Wire System to Override a Remote Auto Transformer Volume Control.

Example 2:

Aux. Busy Indicator.

Example 3:

Paging Only Output.

VOLUME

CONTROL

100V

50V

0V

AMPLIFIER

OUTPUT

+24V

SYSTEM BUSY

INDICATOR

0V

PAGING ONLY

100V

50V

0V

(OFFICES)

MUSIC & PAGING

(WORKSHOP)

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Summary of Contents for Mitre Amplifiers

Page 1: ...Estate Farningham Road Crowborough East Sussex TN6 2JR Telephone 01892 664422 Fax 01892 663146 Website www baldwinboxall co uk Email mail baldwinboxall co uk C O M M U N I C A T I O N S IMITRE Issue...

Page 2: ...be totally muted or ducked to a pre set level when paging operated 10 Remote music mute DC input from time clocks etc 11 Output stage protected by thermal shut down in event of unsuitable load 12 Aux...

Page 3: ...t plug insulated covers Always ensure that the total speaker load does not exceed the rating of the amplifier used If unsure use an impedance meter to measure the unknown load Using a multimeter selec...

Page 4: ...o noise ratio 80mV 12K balanced 40 Hz 18 kHz Better than 70 dB Universal input Mic Sensitivity 600 V balanced Input impedance Without phantom power With phantom power 15V 12k Ohms 660 Ohms Frequency r...

Page 5: ...put impedance 75 Ohms unbalanced AM tuning range 525 1605 kHz Sensitivity for 30 dB signal to noise ratio ref to 30 modulation 40 dB typical IF frequency 450 kHz IF rejection 1050 kHz 55 dB typical Im...

Page 6: ...1 2 3 1 2 3 0V 24V I P I P 0V MOUNTED ON PC1180 2 3 1 1 2 3 1 2 3 0V 6 1 2 3 PHANTOM POWER 330R X2 15V 0V MIC LINE VOLUME INPUT 3 PRI REST CHIME INPUT ACTIVE 24V 0V 100V 50V 0V 100V LINE ZONE 2 LINE Z...

Page 7: ...age and presenting this error signal to a drive limiter circuit Should the amplifier be subjected to an abnormal load the input to the power amplifier is limited to a safe level Over temperature prote...

Page 8: ...x DC Aux output 20 x 5 mm 3 15A T 10A F 2A T 6 3A T 20A F 2A T Input type 2 x line balanced with priority gating Input sensitivity 0 5V 40K Ohms balanced Input common mode rejection ratio 50 Hz 30 kH...

Page 9: ...RIORITY LOGIC 200Hz HIGH PASS FILTER 0V VE IN OUT POWER AMPLIFIER 120 OR 300W 100V 50V 0V 100V 50V 25V OPTION SOCKET VOLUME INPUT 2 I P I P 1 2 BALANCED INPUT 500mV INPUT 2 0V ACCESS 3 4 0V 0V 5V OUTP...

Page 10: ...o Priority CONNECTOR SPEAK SWITCH PRESS TO BUSY INDICATOR INPUT 0V GROUND BUSY OPEN COLLECTOR OUTPUT 40V 0 5A MAX BUSY INDICATORS ETC 24V TO FEED MICROPHONE PRE AMP CLOSES TO 0V WHEN ACTIVE SEE SWITCH...

Page 11: ...s can switch either an AC or DC signal providing it does not exceed 100V 5A Here are 3 examples Example 1 3 Wire System to Override a Remote Auto Transformer Volume Control Example 2 Aux Busy Indicato...

Page 12: ...OUTPUT SWITCH 1 2 AFTER MASTER TONE CONTROLS TONE CONTROLS BEFORE MASTER ON OFF OFF ON NOTE DO NOT SELECT BOTH SWITCHES TO ON 1 2 3 4 SWITCH CHIME SELECTION 3 4 NO CHIME OFF OFF OFF OFF ON ON ON ON 1...

Page 13: ...and energise the Volume Restoration relay JP21 C77 C76 R121 VR10 TP4 VR9 U6 C38 R103 TR1 C64 JP22 R104 R105 D8 D9 500Hz PIPS 900Hz PIPS SET ALARM 500Hz 900Hz CONTINUOUS JP21 C77 C76 R121 VR10 TP4 VR9...

Page 14: ...t is important to connect a suitable aerial A dipole or a multi element directional antenna mounted externally should give optimum FM reception For AM a loop long whip or long wire aerial will suit Bo...

Page 15: ...UFACTURED IN THE UK BY BALDWIN BOXALL COMMUNICATIONS LTD CROWBOROUGH E SUSSEX TN6 2JR TEL 01892 664422 FAX 01892 663146 AM FM AERIAL 1 2 3 4 5 6 1 2 3 4 ON L R AM FM CHIME 0 6mV MIC V REST BUSY PRIORI...

Page 16: ...1 Paging Only This example shows a typical 4 zone system using the M2300 providing the following features a Single zone all call microphone BDM 201 overriding all other inputs b 2 Tone alarm signal to...

Page 17: ...e slave amplifier obtains its input signal from the floating line output selected to post master V C and must be in the correct phase As with the previous example the outputs are wired in series The s...

Page 18: ...ACCESS 0V 24V BAL I P 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 5 1 2 3 4 1 2 3 4 ON GROUP SELECT 0dBM 1 2 3 4 5 6 1 2 3 4 5 6 BMS6 BMS6 BDM201 BDM201 SET LINE LEVEL OUT SET LINE L...

Page 19: ...ACCESS 0V 24V BAL I P 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 5 1 2 3 4 0dBM 1 2 3 4 5 6 1 2 3 4 5 6 BMS6 BMS6 BDM201 BDM201 SET LINE LEVEL OUT SET LINE LEVEL OUT CD OR CASSETTE...

Page 20: ...24V BAL I P 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 5 1 2 3 4 0dBM CD OR CASSETTE PLAYER R L L R ALARM ACCESS RLY COIL AUX MUTE AUX DC OUTPUT RESETTABLE 1 2 3 0V BAL DIN INPUT XL...

Page 21: ...BMS25 ZONED ALL LOCAL VOLUME CONTROL OF MUSIC OVERRIDE ON PAGE AND ALARM 0V CHIME VOLUME ALARM VOLUME INPUT 0V ACCESS BUSY 24V BALANCED L R FLOATING LINE O P 500mV 1 NOTE 2 NOTE 3 NOTE CHIME 80mV LINE...

Page 22: ...N USING INPUT ACCESS 0V CHIME VOLUME ALARM VOLUME INPUT 0V ACCESS BUSY 24V BALANCED L R FLOATING LINE O P 500mV 1 NOTE 2 NOTE 3 NOTE CHIME 80mV LINE 1 2 3 4 5 6 ON 1 2 3 4 ON FLOATING LINE O P POST MA...

Page 23: ...UTPUT LOUD SPEAKE R 50V 100V OU TP UT ZO NE 5 M USIC VO LU ME ZO N E 5 PAG IN G VO LUM E Z ON E 5 0V ACCESS 1 2 ON IN PUT 1 VOLUM E INP UT 2 V OLUM E INPUT BALANCED V 0V T2A 24V DC O U TPUT FUSE 0V A...

Page 24: ...1 VOLUME INPUT 2 VOLUME INPUT BALANCED V 0V T2A 24V DC OUTPUT FUSE 0V ACC ESS INPUT BALANC ED AUX OUTPUT LOUDSPEAKER 50V 100V OUTPUT 600W 16 6 Ohms FIG 7 OBTAINING A 600W SINGLE LOUDSPEAKER OUTPUT SER...

Page 25: ...1 2 3 4 5 6 1 5 1 2 3 4 ON GROUP SELECT 1 2 3 4 5 ALL FIG 8 OBTAINING A 600W SINGLE LOUDSPEAKER OUTPUT USING 1 MASTER 1 SLAVE AMPLIFIERS OUTPUT VOLTAGE AS MASTER 300W MASTER ENSURE CORRECT PHASE INPUT...

Page 26: ...RE MASTER V C BUSY ACCESS 0V 24V BAL I P 1 2 3 4 5 6 0dBM ALARM ACCESS RLY COIL AUX MUTE 1 2 3 0V BAL I P DIN INPUT XLR INPUT PRIORITY CHIME V REST BUSY 0 6mV MIC PHANTOM PO WER 1 2 3 4 POWER AMPLIFIE...

Page 27: ...INPUT1 ACCESS WILL OVERRIDE 2 ON OFF FIG 10 SLAVE REAR PANEL VIEW CHIME VOLUME ALARM VOLUME INPUT 0V ACCESS BUSY 24V BUSY 24V BAL I P MANUFACTURED IN THE UK BY BALDWIN BOXALL COMMUNICATIONS LTD CROWBO...

Page 28: ...RACKET AND ALIGN WALL BRACKET REFIT SCREWS AND RACK WALL MOUNTING ADAPTORS REMOVE 3 x M3 SCREWS REMOVE 2 x No4 SCREWS No4 No4 M3 M3 M3 FIG 12 TO RACK MOUNT M2000 TO WALL MOUNT M2000 REMOVE 3 x M3 SCRE...

Page 29: ...AUX MUTE ALARM TONE CLOSE TO 0V TO TIME SWITCH ETC MUTE AUX INPUT CLOSE TO SOUND CONNECTOR SPEAK SWITCH PRESS TO BUSY INDICATOR INPUT 0V GROUND BUSY OPEN COLLECTOR OUTPUT 40V 0 5A MAX BUSY INDICATORS...

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