8: FAN INTAKE AREA: Air for cooling the SPA100 is drawn in
by the fan at the rear and side, directed through the amplifier,
and exhausted through the front panel vent. Do not block or
impede the airflow through these vents and keep the area free
of foreign materials.
9: LINE INPUT: This 1/4” jack accepts line level signal
sources by means of a cable fitted with a standard 1/4”
phone plug. Low impedance balanced or unbalanced, as
well as high impedance sources are acceptable for this
input. Low impedance balanced inputs are to be wired as
follows: Tip = Signal +, Ring = Signal –, Sleeve = Ground.
10: MIC INPUT: This XLR jack accepts any balanced or
unbalanced low impedance line level source by means of a
three-pin XLR plug. The wiring for the plug is as follows: Pin
1 = Ground, Pin 2 = Signal +, Pin 3 = Signal –.
11: 1/4” SPEAKER OUTPUT: This 1/4” jack offers a conven-
ient method of connecting the amplifier to your speakers
using a cable terminated with a 1/4” plug.
12: BINDING POST SPEAKER OUTPUT: These five-way
binding posts offer an excellent method of connecting the
amplifier to your speakers using cables terminated with
spade lugs, banana plugs, or bare wire. Use of these con-
nectors is highly recommended for high power operation.
13: FUSE HOLDER: The SPA100 employs an AC line fuse to
help protect it from damages due to excessive current
demands. If the amplifier does not function, check this fuse.
If it is blown, replace it ONLY with the same size and type
as indicated near the holder. If the fuse blows repeatedly,
have the amplifier checked by a qualified service person.
14: AC LINE IN: Firmly insert the supplied AC power cord
into this socket until it is fully seated. This grounded power
cord is to be plugged into a grounded power outlet, wired to
current electric codes and compatible with voltage, power,
and frequency requirements stated on the rear panel. Do not
attempt to defeat the safety ground connection.
Rear Panel Information:
SPA100 1/2-Rack Power Amplifier
