Crown Audio IQ-SLM8 - Manual (Page 13)

Page 13
IQ–SLM-8 System and Load Monitoring IQ System Component
Reference Manual
4.3 Install the Wiring
Step 3: Connect the SLM-8 to the IQ System via the
Crown Bus. See Figure 4.4 below. To comply with
FCC regulations, an EMI suppression core should be
added (Section 4.9). See Section 4.6 if additional
Crown Bus wiring instructions are needed.
Notice that the generator output is balanced for low-
noise connection. To comply with FCC regulations, an
EMI suppression core should be added (Section 4.9).
Step 6: Connect the audio wiring to the SLM-8 in-
puts and outputs. The most common application of
the SLM-8 is to monitor the impedance of loudspeaker
loads and to monitor the frequency response and over-
all level of amplifier outputs. With eight channels, an
SLM-8 can accommodate up to four two-channel am-
plifiers. A sample is shown below in Figure 4.6:
Step 4: Turn off the amplifiers or other equipment
that you plan to connect to the audio inputs and
outputs of the
SLM-8.
Step5: Connect the SLM-8 signal generator to the
audio system upstream of the monitor points. The
SLM-8 contains a state-of-the art direct digital synthe-
sis generator to produce the high-quality, low distortion
sine waves required for impedance and frequency
response tests. The signal from the generator needs to
be inserted into the system at some point upstream of
the monitor points. For example, the generator needs
to be connected upstream of the amplifier inputs if
amplifier outputs and loudspeaker loads will be moni-
tored. See Figure 4.5 below:
Fig. 4.4 SLM-8 Crown Bus Wiring
Fig. 4.5 Generator Wiring
Notice that each channel has two connections for
each input and output. Also note that the terminals for
each output are always located directly below the
terminals for each corresponding input.
+ – 1
+ – 1
IQ ADDRESS CROWN BUS AUX
SIGNAL
GENERATOR
LOUDSPEAKER
MONITOR OUTPUT
FUSES*
*USE ONLY 1 A
SLOW-BLOW FUSES
+ – + – + – + – IN OUT
IN OUT
AC VOLTS: 100-120 AMPS: .25 50-60 Hz
AC VOLTS: 220-240 AMPS: .125 50-60 Hz
1 2 4 8 16 32 64 12
8
OFF
ON
CHASSIS
GROUND
® INTERNATIONAL, INC.
ELECTRONIC EQUIPMENT
ELKHART, IN 46517
MADE IN U.S.A.
SERIAL NUMBER
0000
000000
SLMV#.###
1 2 3 4 5 6 7 8
+ – + –
IN OUT
CROWN BUS
CROWN BUS GROUND
(Optional. If used, connect it to the Crown Bus input only.)
(Connect the Crown Bus output of a previous IQ component to
the SLM-8 Crown Bus input. Connect the SLM-8 Crown Bus
output to the Crown Bus input of the next IQ component.)
+ – 1 + – 2 +
+ – 1 + – 2 +
IQ ADDRESS
IN
OU
CROWN BUS AUX
SIGNAL
GENERATOR
LOUDSPEAKER
MONITOR OUTPUT
FUSES*
*USE ONLY 1 A
SLOW-BLOW FUSES
+ – + – + – + – IN OUT
IN OUT
AMPS: .25 50-60 Hz
AMPS: .125 50-60 Hz
1 2 4 8 16 32 64 12
8
OFF
ON
CHASSIS
GROUND
® INTERNATIONAL, INC.
NIC EQUIPMENT
0000
000000
SLMV#.###
1 2 3 4 5 6 7 8
+ –
GENERATOR OUT
(Connect to a line-level input upstream from the monitor points.)
+ – 1 + – 2 + – 3 + – 4 + – 5 + – 6 + – 7 + – 8
+ – 1 + – 2 + – 3 + – 4 + – 5 + – 6 + – 7 + – 8
INPUT
OUTPUT
INPUTS (FROM AMPLIFIER OUTPUTS)
OUTPUTS (TO LOUDSPEAKER INPUTS)
1 A
W FUSES
PUSH TO RESET
CAUTION: TURN OFF AMPLIFIER BEFORE CHANGING THIS SWITCH!
DUAL
BRIDGE MONO PARALLEL MONO CAUTION: BOTH CHANNELS MUST BE CONFIGURED THE SAME (8/4 OHM
OR 70 VOLT) BEFORE USING EITHER
BRIDGE- OR PARALLEL-MONO MODE.
MODEL: COM-TECH 210
AC VOLTS: 120 AMPS: 3.5 60 Hz
RATED OUTPUT: 150 W/CH INTO 4 OHMS
AT 1 KHz WITH 0.1% OR LESS THD. RATED OUTPUT: 240 W/CH INTO 4 OHMS
AT 1 KHz WITH 0.1% OR LESS THD.
MODEL: COM-TECH 410
AC VOLTS: 120 AMPS: 5.5 60 Hz
REG. U.S. PAT. OFF. 4,330,809
4,611,180
THIS AMPLIFIER IS EQUIPPED WITH SELECTABLE INPUT SENSITIVITY. REMOVE P.I.P. MODULE TO ACCESS SENSITIVITY SWITCH.
CH-2 CH-1 INPUT ATTENUATION
+ +
70 VOLT 8/4 OHM 70 VOLT 8/4 OHM
CH-2 OUTPUT CH-1 OUTPUT
BRIDGE-MONO: 1) TURN AMPLIFIER OFF. 2) SET DUAL/MONO SWITCH TO
BRIDGE-MONO. 3) OUTPUT ACROSS “ + ” TERMINALS ONLY (CH-1 IS POSITIVE).
PARALLEL-MONO: 1) TURN AMPLIFIER OFF. 2) SET DUAL/MONO SWITCH TO
PARALLEL-MONO. 3) ADD JUMPER (14 GAGE
OR LARGER) ACROSS THE “
+ ” TERMINALS 4) OUTPUT ACROSS CH-1 TERMINALS ONLY.
IMPORTANT: CLASS 1 OUTPUT
WIRING REQUIRED.
0 dB .5 1 2 3 4 5 6 7 8 10 12 14 16 18 20
22
24
28 60 ∞ 0 dB .5 1 2 3 4 5 6 7 8 10 12 14 16 18 20
22
24
28 60 ∞
COMPATIBLE
BB
Programmable
Input Processor (P.I.P.)
– + C H - 2 I N P U T – + C H - 1 I N P U T
PR E S S
R E S E T
® INTERNATIONAL, INC. ELECTRONIC EQUIPMENT ELKHART, IN 46517
MADE IN U.S.A.
SERIAL NUMBER 0000 000000
+ + –
+ – + –
Crown Com-Tech Amplifier
+ – + –
Fig. 4.6 Audio Input/Output Wiring