Ashdown MAG, ABM Operational Manual

Ashdown Bass

Magnifiers

ABM, MAG

& Electric Blue

Operating Instructio ns

Howe Farm • Southend Road • Chelmsford • Essex • CM2 7TE

E-mail: [e-mail]

Specifications

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

Ashdown Bass

Magnifiers

ABM, MAG

& Electric Blue

Operating Instructio ns