Modular Power Amplifier
  • The AP-4U and the AM4-U 4 cannel modular system amplifiers are the most flexible solutions for any mobile and permanent installation application
  • The module slots on the front panel of AP-4U or AM-4U allow insertion of analogue or digital controller cards.
  • Therefore it is feasible to integrate the signal processing. Normally this is realized through external equipment. The advantage of handling things in this way is quite obvious.
  • Using the control modules provides the opportunity to set up very compact sound reinforcement systems, individually matching a particular application.
  • Cable length and connections are reduced to the minimal amount.
  • For example AP4-U can be attached to up to eight T18W, which forms a bass fundament for the TLA-101 Line Array or the Onax PA-Systems.
  • The mechanic construction and manufacturing guarantees highest sound precision. The robust and highly rigid steel chassis is meant to survive the extensive wear of touring applications.  
Power 4 channel mode 4×0-220 A/B mode 220-750W H mode
4 channel mode 4×0-220 A/B mode 220-1200W H mode
Total Harmonic Distortion <0.1% (on normal working condition)
Intermodulation distortion <0,5% (f=60 /7kHz, 4:1, on normal working condition)
Frequency Response (+0/-3dB ) 20Hz - 20KHz (±0,25dB )
Phase Response <15°
Damping factor
Crosstalk -75dB
Signal to noise ratio
System Gain 40dB(×100)
Channel-gai8n Error
Input sensitivity 0.775V
Slew rate
Input impedance 10KΩ unbalanced input /20KΩ balanced input
Input connectors
4×3-pin connector
Output connectors Speakon Neutrik NL4MP
2× brushless ,stepless shifting; airflow from front to rear
Controls on front panel 4×mute;
Controls on back panel Fuse-switch
Indicator on front panel 4×red/green LED (mute control)
Amplifier protection   Circuit/load/temperature/DC output protected
Dimensions (W×D×H) 483×452×178mm
Power supply AC 220V 230V, 50Hz 60Hz, 1500VA
Weight 25kg
Power supply AC 230V /50 ~ 60Hz /2000VA
AC 115V /50 ~ 60Hz /2000VA
Environment Temperature Working tem. -10°C- 40°C/storage temp: -25°C/C-80°C
Environment Humidity <90%

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 AM-4U Image