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FRONT PANEL FEATURES 

 
 

 

 

 

 
 
 

 
Level (Channels 1~6): 

 These controls adjust the 

amount of signal sent from the individual input 
channels to the mixer output.  Optimum Level setting 
is near the 12 o'clock position (unity gain). 
 

Level (Master):

  This control adjusts the amount of 

signal sent from the mixer output to the amplifier 
input.  The Master Level control is used to adjust the 
overall volume of the system. 
 

Low Cut:

  This switch inserts a low cut filter at the 

amplifier input. 
 

Loudness Contour:

  This switch inserts a loudness 

filter at the mixer output (+6dB @ 100Hz & +4dB @ 
10kHz).  The Loudness filter provides tonal 
compensation when operating with low-level music 
signals. 
 

Tone Control:

  This switch enables the Bass & 

Treble controls. 
 

Bass:

  This screwdriver control adjusts the low-

frequencies ("Bass") at the mixer output (±10dB @ 
100Hz). 
 

Treble:

  This screwdriver control adjusts the high-

frequencies ("Treble") at the mixer output (±10dB @ 
10kHz). 
 

Peak Indicator:

  This red LED flashes when signal 

levels at the amplifier output have reached 
maximum.  Occasional flashes of the Peak Indicator 
are acceptable, however, a continuously lit LED may 
indicate an excessive level setting. 
 

Signal Indicator:

  This yellow LED remains lit when 

signal is present at the amplifier output. 
 

Fault Indicator:

  This red LED lights to indicate fault 

conditions due to overheating, DC offset voltage, or 
failure of low-voltage power.  The Fault Indicator will 
light for 3-5 seconds at turn-on, and then go off if no 
fault is detected.  Some faults (such as overheating) 
will correct themselves when the unit has been 
turned off awhile.  If the Fault Indicator remains lit 
when the unit is turned back on, contact your local 
dealer. 
 

On Indicator:

  This green LED remains lit when AC 

power is applied to the unit.

 

 
Power Switch:

  This switch applies AC power to the 

unit. 

Содержание TMA120

Страница 1: ...put transformer five electronically balanced microphone line input channels one transformer balanced microphone line tel input channel rear panel trim control pad switch on each input channel 24 Volt phantom power selectable on each input channel input isolation transformer option on mic line input channels automatic muting of selected channels 10 20 or 40dB automatic muting triggered by selected ...

Страница 2: ...put 10dB 100Hz Treble This screwdriver control adjusts the high frequencies Treble at the mixer output 10dB 10kHz Peak Indicator This red LED flashes when signal levels at the amplifier output have reached maximum Occasional flashes of the Peak Indicator are acceptable however a continuously lit LED may indicate an excessive level setting Signal Indicator This yellow LED remains lit when signal is...

Страница 3: ...y when a plug is inserted Line Out This RCA phono jack provides an unbalanced line level output from the mixer Line Out is after Stacking In Loudness Tone Compressor Master Level but before Low Cut Rec Out This RCA phono jack provides an unbalanced line level output from the mixer Rec Out is after Stacking In but before Loudness Tone Compressor Master Level Low Cut Pre Out This RCA phono jack prov...

Страница 4: ...muted whenever signal is present in any priority channel Manual Mute assigns a channel to be muted whenever the Mute Chime terminals are shorted together via a switch or contact closure Mute Level assigns the amount of muting 10dB 20dB or 40dB which is applied to a channel when triggered by either Auto Mute or Manual Mute NOTE 10dB muting will occur when both switches are to the right 40dB muting ...

Страница 5: ... the security cover WARNING TO REDUCE THE RISK OF SHOCK DISCONNECT ALL POWER FROM THE UNIT BEFORE MAKING ANY INTERNAL MODIFICATIONS OR EXTERNAL FIELD WIRING CONNECTIONS 230V 115V AC Operation The TMA120 may be converted to 115V operation for use in other countries To convert to 115V operation 1 Remove the fuse holder compartment from the lower portion of the rear panel AC Power Cord receptacle 2 R...

Страница 6: ...ired to the Mute Chime terminals of the TMA120 Channel 3 is set for input from the line level background music source and is assigned manual and auto muting of 20dB Therefore telephone paging will automatically mute only the background music whereas security paging will manually mute both the background music and the telephone paging The TMA120 is set for xfmr output and is connected to a 70V 100V...

Страница 7: ...ack which is also connected to Rec Out of the TMA120 recording If additional inputs are required an auxiliary mixer such as another TMA120 may be connected to the Stacking In terminals of the TMA120 The mixer amplifier is set for direct 4Ω output and is connected in parallel to the two 8Ω speaker cabinets WARNING THE ABOVE DIAGRAM SHOWS THE OUTPUT TERMINAL COVER REMOVED FOR CLARITY ONLY THE COVER ...

Страница 8: ...to talk switch wired to the Mute Chime terminals Channel 6 is set for input from the line level Pre Out of the store TMA120 and is assigned manual muting of 40dB Therefore the digital message repeater will automatically mute only the background music 10dB whereas telephone paging will manually mute both the background music 10dB and the digital message repeater 20dB These combined signals from the...

Страница 9: ...g of 40dB The push to talk switch of each floor paging microphone is wired to the Mute Chime terminals of the respective TMA120 Channel 3 of each TMA120 is set for input from line level background music and is assigned manual and auto muting of 20dB Therefore local paging will manually mute the background music only on that floor 20dB whereas all call paging will automatically mute background musi...

Страница 10: ... Output Regulation no load to full load 0 5dB preamp output line output 200Ω 4dBu 1 2V Equivalent Input Noise mic in 150Ω termination 0 2 record output 200Ω 4dBu 1 2V Signal to Noise Ratio 20Hz 20kHz rated power patch send output 50Ω 8dBu 300mV line inputs 78dB Amplifier Output Impedance Level telephone inputs 78dB 4 Ω 22V 20 8 Ω 50V master level off 98dB 8 Ω 31V 40 8 Ω 70V Compressor 5 2 Ω 25V 83...

Страница 11: ...n your country The best way to do this is through the Tannoy website at www tannoy com However if you cannot locate your local distributor please contact Customer Services Tannoy Limited Professional Division Rosehall Industrial Estate Coatbridge Strathclyde ML5 4TF SCOTLAND Telephone 01236 420199 UK 44 1236 420199 International Fax 01236 428230 UK 44 1236 428230 International e mail service tanno...

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