Ashdown Engineering AFTER 8 Manuel Utilisateur page 11

sUB HARMONICs
This section produces sub harmonics an octave below the notes being played. The level of these sub harmonics relative to the straight bass sound
can be adjusted using the level control.
This is very effective in thickening the sound and you will find in use that only a small degree of this lower octave is required to really fill out the
sound and provide a character that is not possible by any other means.
The degree of sub harmonics is also dependant on the setting of the bass control.
sub harmonics are switched in/out with the push button below and to the left of the sub harmonics level control.
dIRECT INJECT ( d.I. )
A balanced d.I. Is provided on the front panel XLR socket. This provides a post E.Q. Post effects signal.
The output signal from this XLR socket is set to a level and impedance suitable for connecting directly into a balanced microphone input of a mixing
desk for either direct injection into the pa system or for recording.
EFFECTs sENd/RETURN
A serial effects loop is provided at a level of 0db. The effects send and return sockets for this are on the front panel below the d.I. socket.
The effects send socket can also be used as a line out socket if required. The signal path through the preamp is only broken when a jack plug is
inserted into the effects return socket. The effects send is situated after the E.Q.
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 for connection to other
power amplifiers and speakers.
OUTPUT LEvEL
The output control adjusts the overall level of the amplifier. Adjust this for your preferred overall stage playing volume.
Everything possible has been done to make these reliable, minimum service, high quality, long lasting powerful bass amplifiers.
We know you will appreciate the effort that has been put into the design and manufacture of this unit and you will be rewarded in your choice of
bass amplifier by long life and reliability.
INPUTs
High Input Impedance - 3.9M ohms
Low Input Impedance - 10k ohms
Effects Return Impedance - 22k ohms
OUTPUTs
Tuner Output Impedance - 10k ohms
Effects send Impedance - 22k ohms
d.I.Output 600 ohms balanced
speaker Outputs Minimum Impedance - 4 ohms
Frequency Response -3db at 22hz and 25khz
EQUALIsATION
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 (E.Q. Flat)
distortion Less than 0.5% THd
Output Power 330watts RMs into 4 ohms. / 575watts RMs into 4 ohms.
Ashdown Amplifiers reserve the right to change specifications without notice. E & O E. All contents © Ashdown 2011.
Input range 150mv to 20v p - p
Input range 300mv to 40v p - p
Input level 0dbu nominal
Level 0dbu nominal
Level 0dbu nominal
Level -20dbu nominal
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