Channel amplifiers, Rm740.5, 5 channel discrete operation – MB QUART Reference MYKRO Amplifiers User Manual
Page 7: Single set of stereo rca’s, Min 2 m in 2, Min 4 m in 2 m in 2, Min 4
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5 Channel Discrete Operation:
MODE: “5” since 3 sets of RCA’s are connected.
You can use this configuration simply as 4 discrete full range channels, with a 5th low
pass channel. All of the crossovers are bypassed , except the LOW PASS on channel 5.
Control checklist:
- Refer to the section “Settings for Best Performance”
Interconnect cable checklist:
Connect channel 1&2 inputs to the front output, channels 3&4 to the rear output, and
Minimum final loudspeaker impedances:
channel 5 to the mono subwoofer output of a head unit or in dash equalizer.
- 2 Ohms per channel for channels 1-4
- 2 Ohm on channel 5
Switch setting checklist:
- CH 1 / 2 X-OVER: FULL
- CH 3 / 4 X-OVER: FULL
Single Set of Stereo RCA’s
MODE: “2” since 1 set of RCA’s are connected.
We will use the same basic setup on the speaker and subwoofer connections as above
to illustrate an installation that only has 1 set of stereo RCA’s to connect to this amplifier.
Control checklist:
By switching the amplifier to 2CH on the INPUT MODE, you now provide signal to all
- Refer to the section “Settings for Best Performance”
channels on the amplifier. You sacrifice the ability to fade front to rear though.
Minimum final loudspeaker impedances:
Interconnect cable checklist:
- 2 Ohms per channel for channels 1-4
Connect Stereo Left and Right RCA’s from headunit to CH1&2 RCA Inputs.
- 2 Ohm on channel 5
Switch setting checklist:
- CH 1 / 2 X-OVER: FULL
- CH 3 / 4 X-OVER: FULL
5-Channel Amplifiers
FEATURES:
- 3 Sets of RCA inputs
- LEVEL: Variable sensitivity from 0.2V to 6V
- BASS EQ: Adjustable 45Hz bass boost from 0dB to 12dB
- X-OVER: Selects internal crossover functions
- FULL: Bypasses all crossovers for full frequency operation
- LP/BP: Selects the built in variable LOW PASS filter
- HP: Selects the built in variable HI PASS filter
- INPUT MODE: “2” indicates one set of RCA’s are being used. This will also pass signal to channels 3/4 and
5 through 1/2 inputs. “4” indicates connecting 2 sets of RCA’s to 1/2 and 3/4 inputs. “5” indicates connecting
3 sets of RCA’s to channels 1/2, 3/4 and mono signal to channel 5 inputs.
RM740.5
10
50
LP FREQ
50
150
SUBSONIC
FILTER
BASS EQ
CH5 LEVEL
0
12
6
0.2
dB
Hz
V
CH5 REMOTE
Hz
LP/BP
FULL
HP
CH3-4
2CH
5CH
4CH
HP FULL
INPUT MODE
CH1-2
LEVEL
6
0.2
V
LEVEL
6
0.2
V
LP FREQ
50
1K
Hz
HP FREQ
50
3K
Hz
HP FREQ
50
3K
Hz
CH1
CH2
CH3
CH4
CH5 L
CH5 R
1
0
1
0
5
0
5
0
L
P
F
R
E
Q
L
P
F
R
E
Q
5
0
5
0
1
5
0
1
5
0
S
U
B
S
O
N
IC
S
U
B
S
O
N
IC
F
IL
T
E
R
F
IL
T
E
R
B
A
S
S
E
Q
B
A
S
S
E
Q
C
H
5
L
E
V
E
L
C
H
5
L
E
V
E
L
0
0
1
2
1
2
6
6
0
.2
0
.2
d
B
d
B
H
z
H
z
V
V
C
H
5
R
E
M
O
T
E
C
H
5
R
E
M
O
T
E
H
z
H
z
L
P
/B
P
L
P
/B
P
F
U
L
L
F
U
L
L
H
P
H
P
C
H
3
-4
C
H
3
-4
2
C
H
2
C
H
5
C
H
5
C
H
4
C
H
4
C
H
H
P
H
P
F
U
L
L
F
U
L
L
IN
P
U
T
M
O
D
E
IN
P
U
T
M
O
D
E
C
H
1
-2
C
H
1
-2
L
E
V
E
L
L
E
V
E
L
6
6
0
.2
0
.2
V
V
L
E
V
E
L
L
E
V
E
L
6
6
0
.2
0
.2
V
V
L
P
F
R
E
Q
L
P
F
R
E
Q
5
0
5
0
1
K
1
K
H
z
H
z
H
P
F
R
E
Q
H
P
F
R
E
Q
5
0
5
0
3
K
3
K
H
z
H
z
H
P
F
R
E
Q
H
P
F
R
E
Q
5
0
5
0
3
K
3
K
H
z
H
z
C
H
1
C
H
1
C
H
2
C
H
2
C
H
3
C
H
3
C
H
4
C
H
4
C
H
5
L
C
H
5
L
C
H
5
R
C
H
5
R
C
H
1
C
H
2
C
H
3
C
H
4
C
H
5
+
1
2
V
G
N
D
T
U
R
N
O
N
4
0
A
x
2
M
A
X
M
IN
2
M
IN
2
B
R
ID
G
E
D
M
IN
4
M
IN
2
M
IN
2
B
R
ID
G
E
D
M
IN
4
C
H
1
C
H
2
C
H
3
C
H
4
C
H
5
+
1
2
V
G
N
D
T
U
R
N
O
N
4
0
A
x
2
M
A
X
M
IN
2
M
IN
2
B
R
ID
G
E
D
M
IN
4
M
IN
2
M
IN
2
B
R
ID
G
E
D
M
IN
4