Ashdown abm manual
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Page 1
Howe Farm - Southend Road - Chelmsford - Essex - CM2 7TE E-mail: info@ashdownmusic.co.uk Specif icatio ns ABM, MAG & ELECTRIC BLUE 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 Stereo Line Inputs (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 balanced Level -20dBu nominal Low Pass (except Electric Blue) Impedance 1K Ohms Level switched 0/+4dBU High Pass (except Electric Blue) Impedance 1K Ohms Level switched 0/+4dBU Full Range (except Electric Blue) Impedance 1K Ohms Level switched 0/+4dBU Speaker Outputs Minimum impedance 4 Ohms (Electric Blue: 8 Ohms) EQUALISATION (Electric Blue & MAG) Bass +/-15dB @ 100Hz Lo Mid +/-15dB @ 340Hz Middle +/-15dB @ 660Hz Hi Mid +/-15dB @ 1.6kHz Treble +/-15dB @ 7kHz shelving Deep +8dB @ 50Hz Bright +10dB @ 10kHz Signal to Noise Better than 80dB (EQ flat) Distortion Less than 0.5% THD GENERAL SPECIFICATION Frequency Response -3dB at 17Hz and 30KHz (Electric Blue: -3dB at 22Hz and 25KHz) Rack Preamp RPM1 Crossover Variable between 35 and 160Hz Power Requirements 230 / 115V Power Output (Electric Blue only) 120 Watts RMS into the internal speaker, 240 Watts peak
Page 2
Ashdo w n Bass Magnif iers AB M, MAG & Electric B lue O perating I nstructio ns