Hazardous voltaee may be eti-CAUTION: . , „ . , r . . countered wt/hiit me chassis. Installation and Service information within this document is for use only by ALTEC sound contractors, faeton/ authorized warranty stations and qualified service personnel. Il est enjoint à l'utilisateur de ne pas réparer lui-même les pièces IMPORTANT: . . ' , , . , £ i , , , ■ . internes de l appareil, des courants a haute tension pouvant passera ¡'intérieur du châssis. Les renseignements inclus dans ce docu

The 1590E provides 200 watts of power at less than 1% total harmonic distortion (THD) from 50 Hz to 12 kHz, and has a frequency response of -1 dB from 20 Hz to 20 kHz at one watt output. Output transformer taps provide connections for 70.7. 100. 140 and 200 volt line distribution systems. The 1590E features silicon solid-state circuitry, a switchable high-pass filter for use in speech systems, input connections for high impedance devices and for 150/600 ohm or 15,000 ohm balanced inputs, fail-s

The amplifier provides outputs for 4-ohm, 8-ohm and 16-ohm loudspeakers, plus a 70-volt line output for distribution systems. In addition to the high-impedance input, the amplifier has an octal socket to accept a line-isolation transformer. A selectable high pass filter is included for use in speech systems. Cut-off frequency of the filter is 300 Hz. The 1593C is capable of operation from a 120V or 240V ac source or a negative grounded 28V dc source, and features silent, automatic transfer to

1 kHz) ±1 dB, 20 Hz - 20 kHz (1 watt output) ±1 dB, 20 Hz - 20 kHz (0.775 Vrms output, 600 fl load) (Ref 1 kHz) <0.05%, 20 Hz - 20 kHz (rated output power, 30 kHz low-pass filter) <0.05%, 20 Hz - 20 kHz (0.775 Vrms output, 600 fl load, EQ flat, compressor/-limiter off, 30 kHz low-pass filter) >80 dB below rated output power, A-weighted >75 dB below 0.775 Vrms output, A-weighted, EQ off, compressor/limiter off DESCRIPTION The Altec Lansing 1707C/I715C Mixer/Power Amplifier is a six channe

This makes it easy to properly adjust the gain for each input module while efficiently using the rest of the system in terms of performance and headroom. Figure 7. Block Diagram of 1707C/1715C Mixer/Power Amplifiers The mixer/power amplifier then sums the signal at the wiper of each input channel level control into a true virtual ground summing node or bus. The summing amplifier has eight input channels — input channels one through six on the front panel, tone generator output, and the link in

For example, Channel 1 and Channel 2 together can provide stereo, mono, or bridged operation, completely independent of Channels 3-4 or Channels 5-6 settings. 7.4 50Hz Low Cut Switch Each pair of channels has a 50Hz second order (12 dB per octave) low-cut filter option which is applied to both channels within the pair. When the switch is pressed, the audio signal is -3dB at 50Hz, -15dB at 25 Hz, -27dB at 12.5Hz, etc. 8 Operating Manual 6125A and 4200A Multi-Channel Power Amplifier 7.5 Input Leve

Suite 362 Oklahoma City, OK 73116 USA A division of Altec Lansing Technologies Inc, Milford PA 18337-0277 Made In USA Operating Manual 6125A and 4200A Multi-Channel Power Amplifier Table Of Contents 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2 UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 3 AC POWER REQUIREMENTS . . . . . . . . . . . . . . . . . .

O. Box 26105 o Oklahoma Cily. OK « 73126-0105 USA © Tel: (405) 324-5311 e FAX: (405) 324 Operating and Service Instructions for the Altec Lansing 9441A Power Amplifier Table of Contents 1 ELECTRICAL..............................................................' 1 1.1 120 V ac, 50/60 Hz Power Connections..............................................................................1 1.2 220/240 V ac, 50/60 Hz Power Connections...................................................................

It is difficult, however, determine the proper fuse va! with the correct time lag a:; overload characteristics to mat the limitations of a speaker sy tem. The values shown in Table I should serve only as a guide. 4 ALTEC LANSING* CORPORATION • a Mark IV Company Operating and Service Instructions for the Altec Lansing 9444B Power Amplifier INPUT POWER AMPLIFIER STEP-UP TRANSFORMES 70. 100. 140, OR 210 VOLTS LONG CABLE RUN (SHALL GAUGE WIRE) LOUDSPEAKER STEP-DOWN TRANSFORMER Figure 5 Hi