INPUT AND OUTPUT LEVELS
The AF/2HD is designed for preamp-level (750 mVRMS) levels. Speaker-level inputs must be
attenuated to under 1.O VRMS.
Net gain in the filter passband of the AF/2HD is unity. (Output levels are equal to input levels)
POWER WIRING INSTRUCTIONS
The Black 16-gauge wire should be grounded to the chassis. The White 16-gauge wire should be
connected to a source of co12-Volt power. The Red 16-gauge wire is the trigger or turn-on
wire. Connect it to the source unit’s “Accessory” or “Auto-Antenna” lead, or to some other point that
has 12V “positive” when the system turns on. See Figure 1.
PROTECTION FUSE
The AFMHD has a built-in main power fuse for over current protection. If blown, replace with
AGC 1/2 amp fast blow fuse
. See Figure 1 for fuse location.
AF/2HD WIRING/FUSE/MODULE AND JUMPER LOCATIONS
Switches For Number
Of Inputs And A
Summing Channel
I
Modules For Band
And Frequency\Situation
Inputs
outputs
Circuit Hybrids
Fuse
½
Amp
Fast Blow _
Power Led
Ground
Auto Power
Mounting Holes
& Locations
FIGURE
2
