Axess electronics AC8 User Manual

Connections

POWER: Accepts power from an external AC

Adapter with a 5.5mm/2.1mm barrel
connector. See Power Requirements
for more information.

MIDI IN: 7pin DIN connector that receives MIDI

information from an external source
(such as a MIDI footcontroller) which
transmits MIDI commands.

MIDI THRU: 7pin DIN connector that passes on the

MIDI information which is received at
the MIDI IN jack to other MIDI devices.

TO AMP (x2): 8pin DIN connectors that are used to

provide remote switching of an
amplifier’s functions via the supplied
amplifier-specific cable. Please note

that these two connectors are wired in
parallel and are therefore identical. The
ONLY time both connectors can be
used at the same time is when
controlling an amp that has two
footswitch jacks such as the Rivera M
and S series of amplifiers...

Basic Operation

Connect the MIDI IN, MIDI THRU (if necessary) and
the TO AMP jack(s) to the amplifier to be controlled,
followed by power last, as described in the Connections
section.

On power-up the LED will flash twice to indicate the
internal microprocessor is functioning properly. The
LED will then stay lit to indicate power is on and will
flash once every time a valid MIDI message is received.

Program the MIDI footcontroller to transmit the
appropriate MIDI Control Change messages as
required by the AC8 to control your amplifier, see the
MIDI Implementation section for more information.

Power Requirements

+ -

100mA@9.6VDC
Use Boss PSA Adapter Only

5.5mm/2.1mm Barrel Connector

Warranty

This product is warranted against failures due to
defective parts or faulty workmanship for a period of
one year after delivery to the original owner. During this
one year period, Axess Electronics will make any
necessary repairs without charge for parts and labor.
However, shipping charges to and from the repair
location must be paid by the owner.

This warranty applies only to the original owner and is
not transferable.

This warranty does not cover damage to the product as
a result from accident or misuse.

This warranty will be canceled at the sole discretion of
Axess Electronics if the product has:

1. Any signs of tampering, unauthorized service, or
modifications.

2. Any damage resulting from physical abuse or failure
to follow the operating instructions.

Axess Electronics’ liability to the owner and under this
warranty is limited only to the repair or replacement of
the defective product. Call or write to Axess Electronics
prior to shipping the product for repair.

Axess Electronics reserves the right to make any
changes and/or improvements to the design of this
product without any obligation to include those changes
in any previously manufactured units.

How To Reach Axess Electronics

Mail: Axess Electronics
251 Queen Street South #278
Mississauga, Ontario L5M-1L7
Canada

Tel.:
E-mail: [e-mail]

Website: http://www.axess-electronics.com

AC8

Amplifier Controller

• The AC8 Amplifier Controller allows MIDI
control of amplifiers that have DIN/XLR or
other multi-conductor footswitch connectors.

• The AC8 can perform up to eight functions
such as - channel switching, boost(s) on/off,
effects loop on/off, reverb on/off... via MIDI.

• The AC8 and 9’ multi-conductor amp-specific
cable(s) are sold separately.

• The AC8 is compatible with the following MIDI
Footcontrollers - our FX1 & MFC5, the DMC
Ground Control (old & Pro), the Custom
Audio Electronics RS-10’s, the Rocktron All
Access and the Skrydstrup SC-1.

• A single LED indicates the AC8 is powered
and flashes whenever a valid MIDI message
is received.

• Powered by a 9VDC Adapter (like those from
Boss) with a 5.5mm/2.1mm barrel connector.

• Housed in a compact (4.80" x 3.75" x 1.40")
and rugged .064” thick aluminum enclosure
for years of reliable use and performance.

• Brushed finish with black anodize coating and
laser-engraved printing.

MIDI Implementation

Model & F/W: AC8

Version 2
Revision 3

MIDI Channel: 16 Control Changes
(Received)

Control Change: 88 - 95 Latching
(Received) 112 - 119 Momentary

Control Value 0 = Off
Control Value 127 = On

Notes:

1. The above Control Change messages are the
ONLY messages that the AC8 receives and does
something with, all others are ignored.

Each of the amplifiers that the AC8 can control

uses some of the above messages, not all of them.
So when using the AC8 to control your amplifier,
make sure that ONLY the messages listed for your
particular amplifier are transmitted by your
footcontroller. Transmitting any of the other
messages listed above can result in the AC8
switching something unexpectedly.

2. On power-up, all AC8 functions are off.

3. For DMC Ground Control users:

GCX#2 L1 - L8 Lat.’d = Control Change 88 - 95
GCX#2 L1 - L8 Mom. = Control Change 112 - 119

4. Control Value 0/Off is ignored for Control Changes
112 - 114 (Momentary).

Bogner Ecstasy 100B

Control Change: 91 Boost On/Off

92 FX Loop On/Off
112 Selects Channel 1
113 Selects Channel 2
114 Selects Channel 3

Bogner Ecstasy 101B

Control Change: 91 Standby On/Off

92 FX Loop On/Off
93 Boost 1 On/Off
94 Boost 2/3 On/Off
112 Selects Channel 1
113 Selects Channel 2
114 Selects Channel 3

Marshall AVT150/H & AVT275

Control Change: 88 AC. Sim.

89 Clean
90 Overdrive 1
91 Overdrive 2

92 Clean FX
93 Overdrive FX

Note: When selecting channels, only one of the four
Control Change messages (88 – 91), the one for
the channel you want activated, should have a
Control Value of 127/On, the other three must have
a Control Value of 0/Off.

Marshall Mode 4

Control Change: 88 Clean

89 Crunch
90 Overdrive 1
91 Overdrive 2
92 Solo

93 Digital FX

Note: When selecting channels, only one of the four
Control Change messages (88 – 91), the one for
the channel you want activated, should have a
Control Value of 127/On, the other three must have
a Control Value of 0/Off.

Rivera Bonehead (FS-8)

Control Change: 115 Boost 1 On/Off

116 Boost 2 On/Off
117 Boost 3 On/Off
118 FX Loop On/Off
112 Selects Channel 1
113 Selects Channel 2
114 Selects Channel 3