Manual Alpine mrv f 505 (page 4 of 6) (English, French, Spanish)

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7 Battery Lead Terminal

8 Remote Turn-on Lead Terminal

9 Ground Lead Terminal

- Insulation Tube

a Battery Lead (Yellow)

Be sure to add a ★ 50 amp fuse (or two 25A fuses in

parallel) as close as possible to the battery's positive

(+) terminal. This fuse will protect your vehicle's

electrical system in case of a short circuit. If you need

to extend this lead, the wire gauge should be 8 AWG

or larger.

★ MRV-F505 ... 50 amp fuse (or two 25A fuses in

parallel)

MRV-F405 ... 40 amp fuse (or two 20A fuses in

parallel)

MRV-F305 ... 30 amp fuse

b Remote Turn-On Lead (Blue/White)

Connect this lead to the remote turn-on or power

antenna (positive trigger, (+) 12V only) lead of your

head unit.

c Ground Lead (Black)

Connect this lead securely to a clean, bare metal spot

on the vehicle's chassis. Verify this point to be a true

ground by checking for continuity between that point

and the negative (–) terminal of the vehicle's battery.

Ground all your audio components to the same point

on the chassis to prevent ground loops.

CONNECTIONS (Fig. 2 – Fig. 10)

Before making connections, be sure to turn the power

off to all audio components. Connect the yellow battery

lead from the amp directly to the positive (+) terminal

of the vehicle's battery. Do not connect this lead to the

fuse block.

To prevent external noise from entering the audio

system.

• Locate the unit and route the leads at least 10 cm

away from the car harness.

• Keep the battery power leads as far away from

other leads as possible.

• Secure the ground lead to a location connected to

the car’s chassis. Make sure this spot is free from

dirt, grease or paint to insure a good connection.

• If you add an optional noise suppressor, connect it

as far away from the unit as possible. Your Alpine

dealer carries various noise suppressors, contact

them for further information.

• Your Alpine dealer knows best about noise

prevention measures so consult your dealer for

further information.

1 , 2 RCA Input Jacks (CH3/4), (CH1/2)

Connect these jacks to the line out leads on your head

unit using RCA extension cables (sold separately). Be

sure to observe correct channel connections; Left to

Left, Right to Right, Front to Front and Rear to Rear.

3 , 4 RCA Pre-out Jacks (CH1+3), (CH2+4)

5 , 6 Speaker Output Terminals (CH1/2), (CH3/4)

The MRV-F505/MRV-F405/MRV-F305 has two sets of

speaker outputs. Be sure to observe correct speaker

output connections and phasing. In the stereo mode,

connect the right speaker outputs to the right speaker

and the left to left. Connect the positive output to the

positive speaker terminal and the negative to negative.

In the bridged mode, connect the left positive to the

positive terminal on the speaker and the right negative

to the negative terminal of the speaker. Do not use the

speaker (–) terminals as a common lead between the

left and right channels. Do not connect this lead to the

vehicle's chassis ground.

NOTE:

Do not connect speaker leads together or to chassis

ground.

SWITCH SETTINGS

The switch modes shown are for CH1/2. Same

explanations apply to mode selection for CH3/4.

d Input Mode Selector Switch

a) Set to the "ST" position (center) when

the two channels are used in stereo.

The CH-1 (or CH-2) input will output at

the Speaker Output Terminal CH-1 (or

CH-2).

b) Set to the "1" position when the two

channels are used for one channel of a

stereo bridged system.

c) Set to the "1 + 2" position when the two

channels are used for a subwoofer

system which uses the right channel

and left channel signals summed.

e , i Crossover Mode Selector Switch

a) Set to the "ON" position when the

amplifier is used to drive a subwoofer.

The frequencies above the crossover

point will be attenuated at 12 dB/

octave.

b) Set to the "OFF" position when the

amplifier will be used for driving full-

range speakers. The full frequency

bandwidth will be output to the

speakers with no high or low frequency

attenuation.

f , k Frequency Multiplication Switch

a) "X1": Normal crossover frequency (50

to 400Hz)

b) "X20": The crossover frequency will be

multiplied by 20 (1k to 8 kHz).

g , j Crossover Mode Selector Switch

a) Set to the "ON" position when the

amplifier is used to drive a tweeter/

midrange system. The frequencies

below the crossover point will be

attenuated at 12 dB/octave.

b) Set to the "OFF" position when the

amplifier will be used for driving full-

range speakers. The full frequency

bandwidth will be output to the

speakers with no high or low frequency

attenuation.

h Input Mode Selector Switch

a) Set to the "ST" position (center) when

the two channels are used in stereo.

The CH-3 (or CH-4) input will output at

the Speaker Output Terminal CH-3 (or

CH-4).

b) Set to the "3" position when the two

channels are used for one channel of a

stereo bridged system.

c) Set to the "3 + 4" position when the two

channels are used for a subwoofer

system which uses the right channel

and left channel signals summed.

l Input Channel Selector Switch

a) Setting this switch to 1/2 will send the

signal at the inputs of CH1/2 to CH3/4

of the MRV-F505/MRV-F405/MRV-

F305. This eliminates the need for "Y-

adaptors when using a head unit with a

single pair of pre-amp output.

b) Set this switch to 3/4 to have the inputs

of CH3/4 accept independent input

signals. An example of this application

would be the use of a head unit with

dual pre-amp outputs.

c) Setting this switch to 1 + 3/ 2 + 4 will

sum the CH1 and CH3 input and send

it to CH3 while the CH2 and CH4

inputs are summed and sent to CH4.

When used with a dual-preamp output

head unit, this will provide a non-fading

(constant bass) subwoofer output with

fadable front and rear output going to a

separate Satellite amplifier.

m Input Level Selector Switch

Set to the "4V" position when the head unit with 4V

output voltage is used.

When the head unit with non-4V output voltage is used

at the "4V" position, the volume will be decreased.

n , r Crossover Frequency Adjustment Knob

When the frequency multiplication switch is set to the

"X1" position, the crossover frequency can be adjusted

in the range of 50 to 400Hz.

When the frequency multiplication switch is set to the

"X20" position, the crossover frequency can be

adjusted in the range of 1k to 8 kHz.

o , q Crossover Frequency Adjustment Knob

Permits adjustment of the crossover frequency, by

rotating the knob to select any frequency between 50

to 400 Hz as the crossover point.

p , s Input Gain Adjustment Control

Set the MRV-F505/MRV-F405/MRV-F305 input gain

knobs to the minimum (4V) position. Using a loud

cassette or preferably a CD as a source, slowly turn

up the head unit volume until you just hear the sound

distort. At that point, reduce the volume one step so

the distortion is no longer audible. Keep head unit

output at this level and begin increasing the amplifier

gain until the maximum output level you desire is

reached. To prevent damage to the speakers or

amplifier, the maximum output level should not cause

bottoming of the speakers or excessive distortion of

the amplifier.

1 ST 1+2

1 2

25A

BATTERY REMOTE GND

POWER SUPPLY

–

BRIDGED

CH-2

INPUT

CH-3

CH-4

(R)

CH-1

–

CH-4 CH-3

SPEAKER

OUTPUT

FUSE

CH-1

(L)

CH-2

CH-1+3

CH-2+4

(R)

(L)

PRE

OUT

25A

25A 25A

3 4 5

8 9

(MRV-F505)

1 ST 1+2 3 ST 3+4 1/2 3/4 1+3/2+4OFF ON

20 OFF ON OFF ON OFF ON NOM 4V

INPUT MODE

CHANNEL-1/2

HP INPUT MODE LP HP

CHANNEL-3/4

INPUT CHANNEL INPUT LEVEL

4/3/2 CHANNEL POWER AMPLIFIER

MRV - F505

d e f g h i j k l m

★

DC STRAIGHT

150/3K

100/2K

70/

1.4K

50/1K

(Hz)

400/8K

300/

200/4K

150

50 400

200

NOM

MIN MAX

0.5V

CHANNEL-3/4

(Hz)

100

70 300

(Hz)

NOM

MIN MAX

0.5V

150

50 400

200

100

70 300

(Hz)

150/3K

100/2K

70/

1.4K

50/1K 400/8K

300/

200/4K

CHANNEL-1/2

q r

LP HP GAIN

Fig. 2

OFF ON

1/2 3/4 1+3/2+4

OFF ON

3 ST 3+4

★ When adjusting the knobs n – s , remove two hexagon screws by using the hexagon wrench (M2)

included and remove the cover.

★ Lors du réglage des boutons n – s , déposer les deux vis à six pans à l'aide de la clé à vis hexagonale

(M2) fournie et déposer le couvercle.

★ Cuando ajuste los botones n – s , retire los dos tornillos hexagonales utilizando la llave hexagonal

(M2) proporcionada y quite la cubierta.

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Alpine mrv f 505 Manual

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