Hifonics XXV-Gemini Manuale d'uso - Pagina 9
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4 CHANNEL FULL RANGE SYSTEM
Here we show how to use the 4 channel amplifiers as straightforward discrete
4 channel full range units.
Interconnect cable checklist:
Connect the four inputs of the amplifier to a Radio/CD with good quality RCA
cables.
Crossover Switch setting checklist:
1 / 2 CROSSOVER: FULL
3 / 4 CROSSOVER: FULL
Crossover frequency control checklist:
Channels 1 / 2:
HI PASS: N/A
LOW PASS: N/A
Channels 3 / 4:
HI PASS: N/A
LOW PASS: N/A
Channels 1 & 2
FULL RANGE
STEREO LINE
Channels 3 & 4
INPUTS
2 or 3 CHANNEL FULL RANGE SYSTEM
Here we show how to use the 4 channel amplifiers as full range 2 or 3 channel
units by taking advantage of the mono bridging capability of all HiFonics
amplifiers.
The following example shows how to create a 3 channel system by mono
bridging channel pair 3 / 4. In order to create a 2 channel system, simply follow
the example to also mono bridge channel pair 1 / 2.
Interconnect cable checklist:
Connect the inputs of channel pair 1 / 2 to a suitable stereo source, e.g. a head
unit with good quality RCA cables.
A MONO signal source is required to bridge channel pair 3 / 4, such as would be
available from the mono sub bass output of an active crossover, whether
standalone, or built into a head unit or equalizer. Important: Do not be tempted
to connect the hot, or positive outputs, from any source together to obtain a
mono signal, as this could very well damage the output stage of that source.
It is necessary to feed the SAME signal to both left and right inputs via a
Y-adapter RCA cable.
Connect the mono speaker positive terminal to
the LEFT +, and its negative terminal to
RIGHT - as shown.
Crossover Switch setting checklist:
1 / 2 CROSSOVER: FULL
3 / 4 CROSSOVER: FULL
Crossover frequency control checklist:
Channels 1 / 2:
HI PASS: N/A
LOW PASS: N/A
1 STEREO
1 MONO
FULL RANGE
LINE INPUTS
XXV GEMINI 4 CHANNEL AMPLIFIER APPLICATIONS
CH4
BALANCED
PHASE
MONO MIX
CH1
CH3
INPUT
LEVEL
LEFT
9V
0.2V
0
180
2CH 4CH
CH2
CH4
OUTPUT
INPUT
9V
0.2V
-10
+10dB
LEVEL
CUT/BOOST BANDWIDTH
MODE
CH4
BALANCED
MONO MIX
CH1
CH3
INPUT
LEVEL
LEFT
9V
0.2V
0
2CH 4CH
CH2
CH4
OUTPUT
INPUT
9V
0.2V
-10
+10dB
MODE
LEVEL
CUT/BOOST BANDWIDTH
Level control checklist:
Refer to the section "Setting up systems after installation for best performance"
Minimum final loudspeaker impedances:
2 Ohm per channel stereo.
4 Ohms Bridged.
CH 1&2
PARAMETRIC EQ
AMPLIFIER
CH1 & 2
CUT/BOOST
HIGH PASS
ROUTING
RIGHT
0dB
BANDWIDTH
FREQ
FREQ
HP
CH3&4
X1 X10
X1 X10
FULL RANGE
CH1&2
0
180
-10 +10dB
40 400Hz
FULL RANGE
CH3 & 4
X1 X10
X1 X10
MO
ST
LP/BP HP
40 400Hz
15 150Hz
40 400Hz
LP/BP
FREQ
SUBSONIC
FREQ
CROSSOVER
PARAMETRIC EQ
-6dB
XXVR-1
DIAGNOSTICS
CLIP
GREEN: POWER
GREEN: PRE-CLIP
AMBER: THERMAL
AMBER: SOFT CLIP
-20dB
0dB
RED: SHORT
RED: HARD CLIP
BASS REMOTE
Channels 3 / 4:
HI PASS: N/A
LOW PASS: N/A
TIP: If you are using the mono sub bass output of an active crossover, there is
nothing wrong with switching in the low pass filter in these amplifiers for a
steeper low pass rolloff.
Level control checklist:
Refer to the section "Setting up systems after installation for best performance"
Minimum final loudspeaker impedances:
2 Ohm per channel in stereo mode.
4 Ohms mono bridged.
PARAMETRIC EQ
CH 1&2
AMPLIFIER
CH1 & 2
PHASE
CUT/BOOST
HIGH PASS
ROUTING
RIGHT
0dB
BANDWIDTH
FREQ
FREQ
HP
CH3&4
X1 X10
X1 X10
FULL RANGE
CH1&2
180
0
180
-10 +10dB
40 400Hz
FULL RANGE
CH3 & 4
X1 X10
X1 X10
MO
ST
LP/BP HP
40 400Hz
15 150Hz
40 400Hz
LP/BP
FREQ
SUBSONIC
FREQ
CROSSOVER
PARAMETRIC EQ
-6dB
XXVR-1
DIAGNOSTICS
CLIP
GREEN: POWER
GREEN: PRE-CLIP
AMBER: THERMAL
AMBER: SOFT CLIP
-20dB
0dB
RED: SHORT
RED: HARD CLIP
BASS REMOTE
SPEAKER OUTPUT
DIAGNOSTICS
RED - SHORT CIRCUIT
BRIDGED
FUSE
AMBER - THERMAL
+
-
+
-
CH1
CH2
RED - CLIP
RED - CLIP
AMBER - NEAR CLIP
AMBER - NEAR CLIP
GREEN - PRE-CLIP
GREEN - PRE-CLIP
CH1 & 2
CH3 & 4
HFR-G1
+
CH3
-
+
CH4
-
REMOTE
BRIDGED
FULL RANGE
SPEAKERS
SPEAKER OUTPUT
DIAGNOSTICS
RED - SHORT CIRCUIT
BRIDGED
FUSE
AMBER - THERMAL
+
-
+
-
CH1
CH2
RED - CLIP
RED - CLIP
AMBER - NEAR CLIP
AMBER - NEAR CLIP
GREEN - PRE-CLIP
GREEN - PRE-CLIP
CH1 & 2
CH3 & 4
HFR-G1
+
-
+
-
CH3
CH4
REMOTE
BRIDGED
+12V
REM
GND
POWER INPUT
CHASSIS GROUND
REMOTE TURN-ON
TO BATTERY + 12V VIA FUSE
+12V
REM
GND
POWER INPUT
CHASSIS GROUND
REMOTE TURN-ON
TO BATTERY + 12V VIA FUSE
7