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Baldwin Boxall Mitre Amplifiers Operating Instructions Manual

Summary of Mitre Amplifiers

  • Page 1

    Baldwin boxall communications ltd. Wealden industrial 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 2 10/05/2000 mitre amplifiers operating ...

  • Page 2

    - 2 - issue 2 m itre d escription and s pecifications the mitre range of amplifiers consists of integrated slave and tuner/amplifier models. They are designed to give a high degree of flexibility as well as quality and reliability. Integrated amplifiers m2000m (mixer) m2060m (60 watt), m2120m (120 w...

  • Page 3

    - 3 - issue 2 safety i mportant n otes - d o ’ s and d on ’ ts ventilation always ensure adequate ventilation to the amplifier especially the 300 watt version. Do not obstruct ventilation holes in cover or base. The 300 watt versions include internal fans that are temperature controlled to prevent o...

  • Page 4

    - 4 - issue 2 mitre integrated technical specification mixer 60 120 300 rated output power 100v line 230v ac supply n/a 60w 166 ohms 120w 83 ohms 300w 33 ohms thd 1 khz rated output aux input 230v ac supply less than 0.5% typically 0.2% typical output power 1% thd aux input 230v ac supply n/a 80w 12...

  • Page 5

    - 5 - issue 2 mitre tuner specification fm tuning range 87-108 mhz sensitivity for 40 db signal to noise ratio (ref. To ±22.5 khz) 20 dbµ typical if frequency 10.7 mhz if rejection @ 98 mhz 70 db typical image rejection @ 98 mhz 80 db typical am rejection @ 98 mhz 70 db typical antenna input impedan...

  • Page 6

    - 6 - issue 2 0 d b o u t p u t 1 2 3 0 d b o u t p u t f it t e d t o m ix e r o n ly m o u n t e d o n p c 11 8 0 1 3 2 1 3 2 1 2 3 1 2 3 0 v 0 v p r e m ic /l in e p h a n t o m p o w e r 3 3 0 r + 1 5 v i/ p i/ p 0 v a c c e s s b u s y + 2 4 v u n iv e r s a l in p u t 1 6 0 0 u v m ic 8 0 m v ...

  • Page 7

    - 7 - issue 2 mitre slave 120w 300w the mitre slave is equipped with two 0dbm balanced line inputs incorporating a priority switching system. The priority is selected using a two-way dual in line switch. Switch ‘1’ when selected ‘on’ provides input 2 muting when 1 is accessed. Switch ‘2’ when select...

  • Page 8

    - 8 - issue 2 mitre slave technical specification 120w 300w rated output power 100v line 230v ac supply 120w 83 ohms 300w 33 ohms thd 1 khz rated output 230v ac supply less than 0.5% typically 0.2% typical output power 1% thd 230v ac supply 150w 66 ohms 360w 29 ohms output regulation 1 khz 100v line...

  • Page 9

    - 9 - issue 2 b a l a n c e d in p u t 5 0 0 m v i/ p 1 v o l u m e in p u t 1 - l k 1 e n a b l e f il t e r r e m o v e l in k t o 0 v + i/ p 0 v a c c e s s 2 3 4 0 v in p u t 1 p r io r it y l o g ic 2 0 0 h z h ig h p a s s f il t e r 0 v + v e in o u t p o w e r a m p l if ie r 1 2 0 o r 3 0 0...

  • Page 10

    - 10 - issue 2 m itre i ntegrated a mplifier f eatures universal inputs. Each of the universal inputs has a 6 way dil switch to select the required facilities as shown below : note: each universal input has to be accessed (by linking pins 3 and 4) in order to make the input live. The green led on th...

  • Page 11

    - 11 - 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 ov...

  • Page 12

    - 12 - issue 2 alarm, chime and aux. Line output connections. Music mute control the amplifier has an internal pre-set vr6 which controls the residual level of background music during paging. For full muting vr6 should be turned fully clockwise. For partial muting vr6 should be turned anti-clockwise...

  • Page 13

    - 13 - issue 2 alarm tone generator. The alarm tone generator is configured when dispatched from the factory to produce a 1 second alternating 500 and 900 hz dee-daa sound. However, it is possible to produce pulsed or continuous single frequency tones which could be used for start and stop work, cla...

  • Page 14

    - 14 - issue 2 mitre fm / am tuner amplifier. The tuner provides 7 x fm, 7 x am (mw) and 1 x aux. Programme. Front panel view. Rear panel time switch connections tuning a channel. Press the “programme” switch until the channel you wish to tune is displayed by the programme indicator and the fm / am ...

  • Page 15

    - 15 - issue 2 m itre m ixer the mitre mixer has all of the features of the mitre integrated amplifiers but instead of producing a 100v line output to drive speakers directly, the output is a 0db balanced line output to drive other amplifiers. The output is presented on two paralleled xlr connectors...

  • Page 16

    - 16 - issue 2 example installations with wiring diagrams. The following drawings show examples of how to connect amplifiers using the numerous facilities included in them. Nb. As supplied from the factory a jumper lead is included on the rear of the m2300. This lead energises the four output relays...

  • Page 17

    - 17 - issue 2 o btaining a 600w s ingle l oudspeaker o utput figure 7 (page 24) - 1 zone of 600w using 2 slave amplifiers shows how two 300w slaves may be configured to produce 600 watts into a single load. We do not recommend paralleled outputs because both amplifiers would have to possess identic...

  • Page 18

    - 18 - issue 2 0 v c h im e v o l u m e a l a r m v o l u m e + 2 4 v 0 v in p u t 0 v a c c e s s b u s y + 2 4 v b a l a n c e d l r 2 a m a x f l o a t in g l in e o /p l o u d s p e a k e r 5 0 v 1 0 0 v o u t p u t z o n e 4 l o u d s p e a k e r 5 0 v 1 0 0 v l o u d s p e a k e r 5 0 v 1 0 0 ...

  • Page 19

    - 19 - issue 2 + 2 4 v 0 v 2 a m a x l o u d s p e a k e r 5 0 v 1 0 0 v 1 2 3 4 5 m u s ic & p a g in g p a g in g o n l y o u t p u t m 2 0 6 0 m m 2 1 2 0 m 0 v c h im e v o l u m e a l a r m v o l u m e in p u t 0 v a c c e s s b u s y + 2 4 v b a l a n c e d l r f l o a t in g l in e o /p 5 0 0...

  • Page 20

    - 20 - issue 2 f ig 3 . S im p l e 4 z o n e m u s ic & p a g in g s y s t e m u s in g b 4 1 r . + 2 4 v 0 v 2 a m a x l o u d s p e a k e r 5 0 v 1 0 0 v 1 2 3 4 5 o u t p u t m 2 0 6 0 m m 2 1 2 0 m 0 v c h im e v o l u m e a l a r m v o l u m e in p u t 0 v a c c e s s b u s y + 2 4 v b a l a n ...

  • Page 21

    - 21 - issue 2 + 2 4 v 0 v 2 a m a x l o u d s p e a k e r 5 0 v 1 0 0 v o u t p u t z o n e 4 l o u d s p e a k e r 5 0 v 1 0 0 v l o u d s p e a k e r 5 0 v 1 0 0 v l o u d s p e a k e r 5 0 v 1 0 0 v o u t p u t z o n e 1 o u t p u t z o n e 2 o u t p u t z o n e 3 + 2 4 v g r o u p a l l 1 2 3 4...

  • Page 22

    - 22 - issue 2 + 2 4 v 0 v 2 a m a x l o u d s p e a k e r 5 0 v 1 0 0 v 1 2 3 4 5 6 1 5 1 2 3 4 5 o u t p u t z o n e 1 + 2 4 v 0 v 2 a m a x l o u d s p e a k e r 50 v 1 0 0 v 1 2 3 4 5 6 1 5 1 2 3 4 5 o u t p u t z o n e 2 + 2 4 v 0 v 2 a m a x l o u d s p e a k e r 5 0 v 1 0 0 v 1 2 3 4 5 6 1 5 ...

  • Page 23

    - 23 - issue 2 + 2 4 v 0 v 2 a m a x l o u d s p e a k e r 5 0 v 1 0 0 v o u t p u t z o n e 4 l o u d s p e a k e r 5 0 v 1 0 0 v l o u d s p e a k e r 5 0 v 1 0 0 v l o u d s p e a k e r 5 0 v 1 0 0 v o u t p u t z o n e 1 o u t p u t z o n e 2 o u t p u t z o n e 3 + 2 4 v g r o u p a l l 1 2 3 4...

  • Page 24

    - 24 - issue 2 0 v a c c e s s 1 2 o n in p u t 1 v o l u m e in p u t 2 v o l u m e in p u t b a l a n c e d + v 0 v t 2 a 2 4 v d c o u t p u t f u s e 0 v a c c e s s in p u t b a l a n c e d a u x o u t p u t l o u d s p e a k e r 5 0 v 1 0 0 v o u t p u t 0 v a c c e s s 1 2 o n in p u t 1 v o ...

  • Page 25

    - 25 - issue 2 0 v a c c e s s 1 2 o n in p u t 1 v o l u m e in p u t 2 v o l u m e in p u t b a l a n c e d + v 0 v t 2 a 2 4 v d c o u t p u t f u s e 0 v a c c e s s in p u t b a l a n c e d a u x o u t p u t l o u d s p e a k e r 5 0 v 1 0 0 v o u t p u t m u s ic v o l u m e p a g in g v o l u...

  • Page 26

    - 26 - issue 2 6 0 0 w 1 6 .6 o h m s s e r ie s o u t p u t s 5 0 v + 2 4 v 0 v 2 a m a x l o u d s p e a k e r 5 0 v 1 0 0 v o u t p u t z o n e 4 l o u d s p e a k e r 5 0 v 1 0 0 v l o u d s p e a k e r 5 0 v 1 0 0 v l o u d s p e a k e r 5 0 v 1 0 0 v o u t p u t z o n e 1 o u t p u t z o n e 2...

  • Page 27

    - 27 - issue 2 0 v a c c e s s 1 2 o n in p u t 1 v o l u m e in p u t 2 v o l u m e in p u t b a l a n c e d + v 0 v t 2 a 2 4 v d c o u t p u t f u s e 0 v a c c e s s in p u t b a l a n c e d a u x o u t p u t l o u d s p e a k e r 5 0 v 1 0 0 v o u t p u t 1 0 0 v o r 5 0 v l o u d s p e a k e r...

  • Page 28

    - 28 - issue 2 refit screws and repeat for other side. 2u code = m2rack 3u code = m3rack code = mwall repeat for other side. 3 x holes for mounting to wall recomended size = no10 and align rack bracket. And align wall bracket. Refit screws and rack & wall mounting adaptors remove 3 x m3 screws remov...

  • Page 29: Addendum

    1 ecr 1231 addendum for mitre iss1.Doc floating line output 0db transformer isolated output to feed slave amplifier, tape recorders etc 0v (ground) connector output to feed other equipment see switch 1&2 alarm access, close to 0v to access alarm tone generator relay coil aux mute alarm tone close to...