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AX

1500
2500
3500

USER GUIDE

Professional Power Amplifiers

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Summary of Contents for AX

Page 1: ...AX 1500 2500 3500 USER GUIDE Professional Power Amplifiers ...

Page 2: ...7 Rack Mounting 7 Trouble Shooting 7 Service Information 8 Technical Information Technical Specification 9 10 Glossary of Terms 11 Set up Diagrams Mono Mix 12 Stereo Mix 12 Mono Bi amp 13 Stereo Bi amp 13 2 way Monitor Mix 14 Stereo Bi amp with Mono sub bass 14 2 way stereo with additional amplifiers 15 Notes 16 STUDIOMASTER AX Amplifier Series STUDIOMASTER AX Amplifier Series ...

Page 3: ...rked on the rear panel of the amplifier 2 Only use the A C power cord mains lead supplied with the product If it becomes damaged in any way it should be replaced 3 Never operate without or remove the safety ground earth from the A C power cord mains lead 4 Do not attempt to remove screws or panels There are no user serviceable parts inside 5 Do not operate the unit next to heat sources such as ele...

Page 4: ...Increasing the level control or input signal will not increase the output power d PROTECT illuminates when the amplifier is muted at switch on After a couple of seconds they will turn off and the speakers are connected for normal operation If at any stage they stay illuminated a fault has occurred See section under PROTECT LEDs for more information e POWER shows the amplifier is switched on f BRID...

Page 5: ...input to Channel B A single input signal will now supply both channels The volume levels of each channel can still be adjusted individually 4 35Hz high pass filter reduces the level of very low frequency signals reaching the speakers improving bass clarity and power handling It is recommended that this filter is always used for live P A Sound re inforcement Ported Vented bass reflex speaker cabine...

Page 6: ...z feed the amplifier When LO in position is selected only frequencies below 100 or 150Hz feed the amplifier 9 XOVER OUTPUT sockets allow the high or low frequencies from the crossover circuit to feed additional amplifiers See examples in the Set Ups section 10 BRIDGE mode combines the output power of both amplifier channels into one load This is useful when driving a single high powered speaker On...

Page 7: ...loped a fault or been driven too hard into very low speaker impedances The button on the circuit breaker will protrude approximately 6mm when tripped Check speaker wiring and load before re setting To reset turn off the amplifier power switch and push in the reset button If the breaker trips again the amplifier could have developed a fault If this happens refer to the Service Information section 1...

Page 8: ... is 10 Ventilation It is essential that air can circulate freely around the amplifier to provide adequate cooling The fans take air in from the rear of the amplifier and exhaust through the front panel Both the front and rear ventilation holes must not be obstructed When the amplifier is rack mounted care must be taken to ensure that the rack is open at the front and rear to allow sufficient air f...

Page 9: ...the wall supply and switched on 2 Check A C power cord mains lead is fully pushed into the amplifier socket 3 Check that the amplifier is switched on 4 UK only Check fuse in the mains plug 5 Check A C supply house breaker fuse No sound 1 Check that the signal source from mixer CD player etc is working 2 Check that the LEVEL control s are not in the minimum anti clockwise position 3 Check that the ...

Page 10: ...number You will then be given a Returns Authorisation RA number Pack the unit in its original carton to protect it from shipping damage You must have the Returns Authorisation number clearly marked on the outside of the carton or we may refuse the delivery Studiomaster cannot be held responsible for damage resulting from the equipment being packed incorrectly Label the equipment clearly with your ...

Page 11: ...0 Input Sensitivity Ref Rated Power 4 ohms 0dBu 0dBu 0dBu 0 775V 0 775V 0 775V Distortion THD 1kHz rated power 0 01 0 01 0 02 1 channel driven Frequency Response 20Hz 20kHz 0 0 5dB 0 0 5dB 0 0 5dB Signal to Noise Ratio unweighted Ref Rated Power 4 ohms 100dB 100dB 100dB Crosstalk 1kHz 80dB 80dB 80dB Damping Factor Ref 1kHz 8 ohms 200 200 200 Crossover Selectable 100 150Hz 3rd order filter STUDIOMA...

Page 12: ...ive loads Load Protection Power up down muting Output Curcuit type AB H 2 H 3 AB Class AB complementary linear output H 2 Class AB complementary linear output with Class H 2 step high efficiency circuit H 3 Class AB complementary linear output with Class H 3 step high efficiency circuit Dimensions 19 48 3cm width 2U 3 5 8 9cm height 15 5 39 4cm depth rack mounting to rear rack ears Weight Shipping...

Page 13: ...ares used to reproduce it HOT The positive phase of a signal Usually the red wire in a screened cable IMPEDANCE Similar to resistance except that impedance also reflects the effect of any inductance or capacitance in the circuit KILOHERTZ kHz A measurement of frequency 1000 Hertz 1kHz 1000 cycles per second LEVEL The size of a signal at any given point in an audio system LINE LEVEL A signal level ...

Page 14: ...OUTPUT OFF ON HI LO XOVER TO CH B AMP OFF ON PIN 1 PIN 1 XOVER OUTPUT 100Hz 150Hz Parallel Switch IN Left Speaker Right Speaker GND LIFT PARALLEL INPUTS INPUT B LINK B CH BRIDGE CH A PIN 1 PIN 2 PIN 1 PIN 1 30Hz LIMITER OFF HI LO INPUT A LINK A CH HI LO 30Hz LIMITER OFF HI LO XOVER TO CH A AMP XOVER OUTPUT OFF ON HI LO XOVER TO CH B AMP OFF ON PIN 1 PIN 1 XOVER OUTPUT 100Hz 150Hz Left Speaker Righ...

Page 15: ...30Hz LIMITER OFF HI LO XOVER TO CH A AMP XOVER OUTPUT OFF ON HI LO XOVER TO CH B AMP OFF ON PIN 1 PIN 1 XOVER OUTPUT 100Hz 150Hz Left Mid HI Speaker Right Mid HI Speaker Left Right XOVER ON Switch IN Select HI Switch OUT Select LO Switch IN GND LIFT PARALLEL INPUTS INPUT B LINK B CH BRIDGE CH A PIN 1 PIN 2 PIN 1 PIN 1 30Hz LIMITER OFF HI LO INPUT A LINK A CH HI LO 30Hz LIMITER OFF HI LO XOVER TO C...

Page 16: ...t Mid HI Speaker Right Mid HI Speaker Left Right GND LIFT PARALLEL INPUTS INPUT B LINK B CH BRIDGE CH A PIN 1 PIN 2 PIN 1 PIN 1 30Hz LIMITER OFF HI LO INPUT A LINK A CH HI LO 30Hz LIMITER OFF HI LO XOVER TO CH A AMP XOVER OUTPUT OFF ON HI LO XOVER TO CH B AMP OFF ON PIN 1 PIN 1 XOVER OUTPUT 100Hz 150Hz Select HI Switch OUT XOVER ON Switch IN Select LO Switch IN XOVER ON Switch IN Select same frequ...

Page 17: ...NPUTS INPUT B LINK B CH BRIDGE CH A PIN 1 PIN 2 PIN 1 PIN 1 30Hz LIMITER OFF HI LO INPUT A LINK A CH HI LO 30Hz LIMITER OFF HI LO XOVER TO CH A AMP XOVER OUTPUT OFF ON HI LO XOVER TO CH B AMP OFF ON PIN 1 PIN 1 XOVER OUTPUT 100Hz 150Hz Left Bass LO Speaker Right Bass LO Speaker GND LIFT PARALLEL INPUTS INPUT B LINK B CH BRIDGE CH A PIN 1 PIN 2 PIN 1 PIN 1 30Hz LIMITER OFF HI LO INPUT A LINK A CH H...

Page 18: ...STUDIOMASTER AX Amplifier Series STUDIOMASTER AX Amplifier Series 16 Notes ...

Page 19: ...STUDIOMASTER AX Amplifier Series STUDIOMASTER AX Amplifier Series Notes ...

Page 20: ...hire LU7 4TZ UK Tel 44 0 1525 217111 Fax 44 0 1525 378466 email enquiries studiomaster com www studiomaster com In Accordance with our progressive product development Studiomaster Recording Studio Design reserve the right to change features and specifications without prior notice AXM ENG V3 ...

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