Ashdown Geezer Butler Signature Bass Amp Head User Manual Download Page 4

amplifier and allows a tuner connected to the TUNER socket 
to operate for silent tuning. Release the button and you are 
back in action again.

TUNER OUT - This output socket provides a line level signal 
that can be used for a permanent connection to a tuner.

The signal from this socket remains when all other outputs 
from the amplifier are Muted allowing all sound from the 
amplifier to be silenced while tuning is in progress.

LINE OUT -This output socket provides a line level/post 
Output Level control signal for connection to an external 
power amplifier driving additional speaker cabinets.

OUTPUT LEVEL - The OUTPUT control adjusts the overall 
level of the amplifier. Adjust this for your preferred overall 
stage playing volume in conjunction with the OUTPUT LEVEL 
VU Meter. 

LINE INPUT - The rear panel has a Line Input socket for 
connection of other signal sources into the system. This 
can be used for plugging a CD, Tape or MP3 player into the 
amplifier for practising, rehearsing or for connection of a 
second pre-amp into the system.

EFFECTS SEND / RETURN - A serial effects loop is provided 
at a level of 0dB. The EFFECTS SEND socket can also be used 
as a Line Out socket if required as 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 EQ, the Valve section the Compression and the Sub 
Bass Processor.

4-WAY FOOTSWITCH SOCKET - For the 4 way footswitch to 
operate it is essential that the corresponding front panel 
push buttons be in the OUT position.

This is a mono jack socket for connection of the Ashdown 
4 way footswitch (sold separately) only. Always connect 
this prior to turning on the power to the amplifier as the 
footswitch derives its power from the amplifier and sends 
a serial data stream to the amplifier in order to operate the 
various functions.

Each of the 4 facilities available for selection is indicated 
by an LED (on the FS4) that will light when that facility is 
selected from the footswitch.

SPEAKER OUTPUT - The Speaker Output sockets are also 
situated on the rear panel of the unit. The HOD has one 
power section rated at 666 Watts RMS with two Neutrik 
combi speakon out-puts. The Power section has a minimum 
load of 4 ohms. 

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SLAVE INPUT - There is a slave input on the rear of the head this has been designed to be fed by the transformer isolated 
outputs if running multiple heads from one input source... 

ISOLATED INSTRUMENT OUTPUTS - On the rear of the head are 3 transformer isolated outlets labelled A, B and C. These are 
designed to either feed the slave inputs of multiple heads, if you wish to just use one head as a master.

Alternatively if you wish to be able to shape each individual amplifier simply plug your instrument into your master amp 
and connect slave outputs A, B or C to the instrument input on the front of your other amp.

Please see the diagram over page for a few scenarios...

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