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Operating
Instructions
Park Farm • Inworth • Colchester • Essex • CO5 9SH
http://www.ashdownmusic.com
ABM/RPM-1 Amplifier Heads and ABM Combos
MAG 300 Amplifier Head and Combos
Electric Blue 180 Amplifier Head and Combos
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The ABM Design Philosophy This is a NO COMPROMISE design using the best parts available wherever possible. The lightning flash with the arrow head symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated ‘dangerous voltage’ within this product’s Some examples of this are as follows: enclosure that may be of sufficient magnitude to constitute a risk of electric shock. • Gold plated jack sockets for reliability and long life. • Full metal XLR sockets for s
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Front Panel Facilities ABM, RPM-1, MAG 300 & ELECTRIC BLUE 180 ABM/RPM-1 DEEP (Electric Blue 180 & MAG 300) With this button IN, a fixed E.Q. is superimposed on the preamp to give a BASS boost to the sound.This gives +8dB at 50Hz. BRIGHT (Electric Blue 180 & MAG 300) With this button IN, a fixed E.Q. is superimposed on the preamp to give a TREBLE boost to the sound. This gives +10dB at 10kHz. E.Q. IN / OUT MAG 300 This button switches the Equalisation section IN or OUT, i.e., the Bass, Middle
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150 10 120 9 95 8 75 7 65 6 Front/Rear Panel Facilities ABM, RPM-1, MAG 300 & ELECTRIC BLUE 180 TUNER / LINE OUT This output socket provides a line level signal that can be used either for a permanent connection to a tuner or a line output to slave up to other power amplifiers. (ABM/RPM-1 users - Please note that if this socket is used as a slave output to other power amplifiers that the MUTE button will not mute the signal to the external power amplifiers.) SUB OUT (ABM/RPM-1 only) This output
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Specifications ABM, MAG 300 & ELECTRIC BLUE 180 PREAMPS INPUTS High Input Impedance 3.9M Ohms Input range 150mV to 20V p-p Low Input Impedance 10K Ohms Input range 300mV to 40V p-p Line Input (ABM only) Impedance 22K Ohms Input level 0dBu nominal Effects Return Impedance 22K Ohms Input level 0dBu nominal OUTPUTS Tuner Output Impedance 22K Ohms Level 0dBu nominal Sub Output (ABM only) Impedance 22K Ohms Level 0dBu nominal Effects Send Impedance 22K Ohms Level 0dBu nominal D.I. Output 600 Ohms bal
