Zapco Studio X Series - Manual (Page 12)

1. GND The amp should have a firm connection the car frame. * See sec-
tion "Install Sense"
2. REM The remote terminal connects to the head unit remote out, or to
some other switched 12 volt source to turn on the amplifier.
3. +12V The main 12 volt must be connected directly to the vehicle’s battery
using wire of the proper gauge. * See section "Install Sense"
4. Speaker connections The heavy duty terminal block provides positive
speaker connections. Simple insert the wire and cinch down the set
screw. Note that the Mono bridge positions are L+ to R - , for both front
and rear speaker sets
5. Fusing Note the ST-500XM has an internal fuse but the ST-1000XM and
1500XM are not internally fused and require an additional fuse installed
in the main power lead from the battery
ST-1000XM and ST-1500XM output side
Note that no internal fuse is provided with these amps and the installer
must put an external fuse in the main power lead from the battery
within
50cm of the amplifier. The ST1000XM Requires an 80Amp fuse and the
ST-1500XM requires a 125Amp fuse.
If there is only one amp in the system, the fuse can go by the battery but you
will need to compensate for current loss in the wire. See a qualified installation
specialist for further fusing advise.