11
ST-X Mono III Input/Controls
The ST-X Mono III amplifiers have similar functions and share the same input panel.
Showen here is the ST-1000XM III model.
2
3
1
9
1• Green power-on LED and red protect LED
2• Remote control for the bass aoutput
3• RCA inputs
4• Bridge In and Out to “strap” mono amps
so they can work together to drive a single
speaker
5• Variable gain control
6• Low Pass frequency control
7• Subsonic filter
8• Bass boost frequency control sets the
center point of the boost
9• Bass Boost level
10• Phase control
4
5
6
7
8
10
10
ST-X SQ III Input/Controls
The ST-X SQ III amplifiers have similar functions, but different layout puts the controls in
different positions. Showen here is the ST-4X SQ III 4-channel model.
2
3
4
11
12
13
5
7
8
10
1
6
9
14 15
1• Green power-on LED and red protect LED
2• Rear High Pass frequency control
3• Auto-on switch for OEM integration
4• Rear Low Pass frequency control
5• Rear speaker level input plug for OEM
hookup
6• Rear channels variable gain control
7• Rear channels RCA inputs
8• Pass through RCA output (rear channels
can feed another amp)
9• Front channels RCA inputs
10• Front speaker level input plug for OEM
hookup*
11• Rear crossover function switch for high
pass, full range, or low pass
12• Rear channels Bass Boost switch for 0,
6dB, or 12dB
13• Front channels variable gain control
14• Front crossover function selector for full
range of high pass
15• Front High Pass frequency control
(Green) Left +
(Green/stripe) Left -
(Gray) Right +
(Gray/stripe) Right -
*
Hi-Lev Input
