
4
HCA600ACREF Connector Pin Designations
PIN
DESIGNATION
FUNCTION
WIRE COLOR
SPECIFICATIONS AND COMMENTS
1
Analog Ground
Input Ground
Black
(22 Gauge)
Connect to ground of pre-amp or connect to pin 18.
2
Non-Inv Input
Audio Input
Phono
Audio applied to pin 2 does not invert the phase of the signal.
Input impedance is 5k
.
3
Inv Input
Audio Input
Phono
Pin 3 and 4 are differential inputs. Audio applied to pin 3 inverts
the phase of the signal. Input impedance is 10k
.
4
Analog Ground
Input Ground
Black
(22 Gauge)
5
Enable
Enable
Green
(22 Gauge)
Add capacitance to delay startup or pull low to disable amp.
6
Fan
Controls fan or drives LED
indicatingovertemperature
shutdown
Brown
(22 Gauge)
Optional
7
CL_OUT
Drives LED to indicate
onset of current limit
Grey
(22 Gauge)
Optional
8
SFCL_OUT
Drives LED to indicate soft
clipping is activated
Blue
(22 Gauge)
Optional
9
-12V
- Bias Supply
Purple
(22 Gauge)
50mA, -12V
±
10%
10
+12V
+ Bias Supply
Orange
(22 Gauge)
50mA, +12V
±
10%
11
PGND
Power Ground
Black
(16 Gauge)
Connect to Star Ground
12
+BUS
Positive Supply
Red
(16 Gauge)
For best results use at least 12,000
μ
F, 160V electrolytic
capacitor. Limit Bus under no load conditions to 130V.
13
+BUS
Positive Supply
Red
(16 Gauge)
14
PGND
Power Ground
Black
(16 Gauge)
15
-BUS
Negative Supply
White
(16 Gauge)
For best results use at least 12,000
μ
F, 160V electrolytic
capacitor. Limit Bus under no load conditions to 130V.
16
-BUS
Negative Supply
White
(16 Gauge)
17
+12VFLT
Floating 12V supply
(referenced to -Bus)
Yellow
(20 Gauge)
500mA, +12V
±
10%
This signal is referenced to the negative rail (-Bus).
18
PGND
Power Ground
Black
(16 Gauge)
Molex Part Numbers: Header - 26-60-5180, Connector - 09-50-8183, Pins - 08-52-0113
WARNING:
Insulate wires. Accidental shorts between +/- Bus and bias supplies will damage the amplifier.
HCA600ACREF