CONNECTING THE SYSTEM
The following diagrams illustrate typical connections. Although these illustrations show
XLR’s for inputs and 1/4” plugs for outputs, a variety of alternative connectors are available.
For most stage setups, mono (not stereo) is recommended. The reason for this is the
audience on the left will not hear the same program material on the right if the program is
done in true stereo.
INPUT CONNECTIONS
The preferred method of connecting input signals is with balanced XLR’s (two conductors
plus a shield wire such as Carvin professional XLR cables). Balanced input signals provide
the highest gain and best noise rejection. 1/4” stereo cables are also capable of providing
balanced input by using a stereo plug (tip-positive, ring-negative & sleeve-ground). Not all
sources provide balanced outputs. If this is the case, standard 1/4” input cables work fine
with cable lengths under 25 feet (single conductor plus shield) providing there is no ground
loop in the system.
SERIAL NUMBER
PARALLEL
GND LIFT
INPUT 1
INPUT 2
BRIDGE
120-240VAC~50/60Hz
225VA
MIN. LOAD
SELECT
BRIDGE
STEREO AMPLIFIER
4/CH
8/CH
16 BR
8 BR
100W
75W
100W
X
200W
150W
X
200W
4 MIN.
8 MIN.
4 MIN.
Use 16 guage or heavier
Non shielded cables (PH50).
Plug into the 1/4" speaker jacks
or strip and insert into speaker
Binding Post (Red+ Black-)
Ch 2 Speaker
Ch 1 Speaker
BRIDGE switch
must be OFF (OUT).
PARALLEL switch
must be (IN)
TYPICAL STEREO (BIAMP) SETUP
SERIAL NUMBER
PARALLEL
GND LIFT
INPUT 1
INPUT 2
BRIDGE
120-240VAC~50/60Hz
225VA
MIN. LOAD
SELECT
BRIDGE
STEREO AMPLIFIER
4/CH
8/CH
16 BR
8 BR
100W
75W
100W
X
200W
150W
X
200W
4 MIN.
8 MIN.
4 MIN.
INPUT 1
Use 16 guage or heavier
Non shielded speaker cables.
Plug into the 1/4" speaker jacks
or strip and insert into speaker
Binding Post (Red+ Black-)
Use a XLR or 1/4" 2 or 3 cond. shielded cables
Full Range
(Lo Freq. Bi-Amp)
Woofer System
Full Range
(Hi Freq. Bi-Amp)
Horn System
(Hi Freq. Bi-Amp)
(Lo Freq. Bi-Amp)
Ch 1 Left
Ch 2 Right
SPEAKER CONNECTIONS
There are two 1/4” speaker jacks available for speaker connections (one for each channel).
Additionally, there are two pairs of binding posts that not only allow for high current con-
nections to speakers but are also used for “bridging” the amps output (see rear panel sec-
tion 14 & 15). Use heavy gauge wire for all speaker connections (no lighter than 16 gauge
up to 50’). Caution: Never use shielded cable (microphone or instrument input cable) to
connect speakers. These cables will not handle the required current and may cause
damage.
SERIAL NUMBER
PARALLEL
GND LIFT
INPUT 1
INPUT 2
BRIDGE
120-240VAC~50/60Hz
225VA
MIN. LOAD
SELECT
BRIDGE
STEREO AMPLIFIER
4/CH
8/CH
16 BR
8 BR
100W
75W
100W
X
200W
150W
X
200W
4 MIN.
8 MIN.
4 MIN.
INPUT 1
Use a XLR or 1/4" 2 or 3 cond. shielded cables
Activate the BRIDGE switch
(IN). Control the level by Ch 1
( Ch 2 does not function.
70V Distribution System:
"TAP" Wattage of transformer
(can vary from diagram)
divided by total wattage
of Amp = Number of
transformer/speaker(s)
that can be hooked up.
Single speaker or
system connected
in BRIDGE mode.
Minimum imp. 8
+
16
8
4
C
15w
7w
3w
1w
C
+
16
8
4
C
15w
7w
3w
1w
C
OR
TYPICAL MONAURAL SETUP
TYPICAL BRIDGED SETUP
SHIELD
-NEG.
3
1
2
+POS.
SHIELD
-NEG.
3
1
2
+POS.
GND
- SIGNAL (BAL.)
+ SIGNAL (BAL.)
BALANCED MIC/LINE XLR CABLES
1
2
3
INTERRUPT (PATCH)
STEREO OR BALANCED SIGNAL LINE
SHIELD (GROUND)
+ SIGNAL (RETURN)
- SIGNAL (SEND)
SPEAKER OR SIGNAL LINE CABLE
(Unshielded)
(Shielded)
(Shielded)
SHIELD (GROUND)
+ TIP (HOT)