P
A C K I N G
I
N F O R M A T I O N
Unpacking
Before you plug in, inspect your Hundred Duo Twelve amp for any damage. Your amp was inspected and
sound-tested before shipment, but transportation can sometimes be tough. Check that the FS-7 Footswitch
and power cord have been shipped with the amp. If parts are missing, or if any damage has occurred, contact
your dealer.
Packing Materials
We designed the original box and packing materials to protect your amp during shipment. Save them. If you
ever need to send your amp to us or to anyone else, the original box and packing materials will ensure safe
transit.
S
A F E T Y
P
R E C A U T I O N S
Throughout this manual, the lightning flash with an arrowhead symbol within a triangle is intended
to alert you to the presence of uninsulated “dangerous voltages” within the product’s enclosure that
may be of sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within a triangle is intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the literature that accompanies the product.
There are no user-serviceable parts inside of this amplifier.
Warning:
To avoid the risk of shock or fire, do not expose this amplifier to moisture. Do not remove the
chassis from its cabinet, or remove metal covers from chassis parts. Removing the chassis from its cabinet
exposes extremely dangerous high voltages. There are no user-serviceable parts inside. Hazardous voltages are
present inside the chassis. Refer all servicing to qualified personnel.
Caution:
To avoid a fire hazard, always replace the fuses with the same type and rating.
Caution:
Always replace the line cord (mains supply) with the proper type.
Caution:
Always turn off the amplifier before making or unplugging any speaker connections.
Always transport your amplifier securely, preferably in a suitable flight case or packing carton. Before operat-
ing your amplifier, be sure the speakers used are properly connected. For countries where 220 to 240 volts AC
is encountered, make sure that you have the correct power cord. Our 230-volt export unit can be used with
any of these voltages. For Japan 100VAC models, all instructions for the 115VAC models apply.
In the event that you have questions, comments, or suggestions, please contact us at:
RIVERA
12316 Branford St., Unit G
Sun Valley, CA 91352
Telephone (818) 890-2826
FAX (818) 890-5202
4
3
2
1
Channel 2
Channel 1
Hundred
Duo Twelve
PULL
SELECT
PULL
BOOST
STANDBY
POWER
LOW
GAIN
HIGH
GAIN
VOLUME
BASS
MIDDLE
TREBLE
MASTER
VOLUME
TREBLE
MIDDLE
BASS
MASTER
REVERB
PRESENCE
HANDCRAFTED BY RIVERA RESEARCH & DEVELOPMENT
SUN VALLEY, CA USA
INPUTS
PULL
BRIGHT
PULL
NOTCH
PULL
NINJA
10
9
8
76
5
4
3
2 1
10
9
8
76
5
4
3
2 1
10
9
8
76
5
4
3
2 1
10
9
8
76
5
4
3
2 1
10
9
8
76
5
4
3
2 1
10
9
8
76
5
4
3
2 1
10
9
8
76
5
4
3
2 1
10
9
8
76
5
4
3
2 1
10
9
8
76
5
4
3
2 1
10
9
8
76
5
4
3
2 1
10
9
8
76
5
4
3
2 1
10
9
8
76
5
4
3
2 1
