User Manual

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 nd in use
that only a small degree of this lower octave is required to really ll 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.
Output level
The output control adjusts the overall level of the amplier. Adjust this for your preferred
overall stage playing volume.
D.I.
A balanced D.I. Is provided on the rear 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 rear panel above 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.
Line In
This input socket provides a line level signal that can be used in conjunction with the
Line in Level control on the front panel for connecting a line level instrument of play-
back device.
FS-2 Output
The FS-2 Output is for use with a double latching foot-swtich, this controls the Sub
Harmonics and also the Drive for ease of access (foot-switch sold separately).
Speaker Outputs
There are two speakon out sockets located on the rear of the amp for use with appro-
priate cabinets. Min load of 4 ohms.
MAINS
For use with the supplied IEC mains connector. Mains fuse is located beneath socket,
please check rear of model for specic fuse ratings.
Everything possible has been done to make these reliable, minimum service, high
quality, long lasting powerful bass ampliers.
We know you will appreciate the effort that has been put into the design and manufac-
ture of this unit and you will be rewarded in your choice of bass amplier by long life
and reliability.
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
Effects Return Impedance - 22k ohms Input level 0dbu nominal
Line Input Impedance - 22k ohms Level 0dbu nominal
Outputs
Effects Send Impedance - 22k ohms Level 0dbu nominal
D.I.Output 600 ohms balanced Level -20dbu nominal
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
Shape + 8db @ 50hz + 10db @ 10khz
Signal to Noise Better than 80db (E.Q. Flat)
Distortion Less than 0.5% Thd
Output Power 507watts RMS into 4 ohms. / 800watts RMS into 4 ohms.
Ashdown Ampliers reserve the right to change specications without notice. E & O E. All contents © Ashdown 2016. Ashdown Ampliers reserve the right to change specications without notice. E & O E. All contents © Ashdown 2016.