Manual Alpine mrd m 500 (page 24 of 24) (English, German, French, Spanish)

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STEP 5. (5) BASS COMP. (Bass Compensation)

Digital Bass Compensation utilizes Alpine’s exclusive

MediaXpander™ processing technology to enhance bass definition

and output. This is an especially useful feature in restoring bass

quality lost with compressed media such as MP3’s. Selection is simply

on/off except for the MRD-M1000, which has three effect levels

available for more precise tuning or personal taste.

• You should be in mode "5" (BASS COMP.) now

from the previous step.

• Push "ENT" and push "ENT" again to select "5-1" (ON/OFF).

• Toggle to "ON". Push "ENT".

• Push "ENT" to enter "5-2" (BASS COMPENSATION LEVEL).

• Toggle to select "COMP.1", "COMP.2" or "COMP.3".

• Press "MODE" to advance to step 6 or "DISP" to exit.

SETTING BASS COMPENSATION

Toggle

ENT

Toggle

ENT

START HERE

DISP

Lower Frequency (LP) Higher Frequency

Level

Variable Width

Adjustment

NOTE: When adjusting the selected frequency's

width setting, "0.5 or 1" will represent a "WIDE"

band width and "5" will represent a "NARROW"

bandwidth.

0dB

20 30 40 60 100K 1000K10Hz

50Hz Sample Adjustment

MODE

Toggle

For MRD-M300

For MRD-M500

ENTENT

ENT ENT

Toggle

ENT

ENT ENT

ENT

• You should be in mode "4" (PARAMETRIC EQ) now

from the previous step.

• Push "ENT" to enter the adjustment menu.

• Push "ENT" to enter "4-1" (ON/OFF).

• Toggle to "ON" and push "ENT"

• Push "ENT" to enter "4-2". (FREQUENCY)

• Toggle to desired freq. and push "ENT".

• Push "ENT" to enter "4-3". (WIDTH)

• Toggle to attain the desired width

(note: a lower Q Value= Wider,

a higher Q value = more narrow)

• Push "ENT" to enter "4-4". (LEVEL

• Toggle to desired level (boost or cut)

• Press "MODE" to advance to step 5 or "DISP" to exit.

SETTING THE PARAMETRIC EQ

START HERE

DISP

STEP 4. (4) PARAMETRIC EQ (Frequency, Width (Q), and Level)

Using the Parametric EQ is a good way to fine tune your

subwoofer or adjust for personal taste. Unlike traditional bass

boost or graphic EQ's, both the center frequency and width of

the EQ band is user selectable, allowing it to be custom tailored

for the desired effect. As you can see in example [3], with the

subsonic and low pass filters engaged, you can enhance your

sound by focusing on a high energy bass response in the

vehicle. When set to its widest setting, this can also function as

an overall gain adjustment.

• You should be in mode "3" (SUBSONIC) now from the

previous step.

• Push "ENT" to enter "3". Push "ENT" to enter "3-1" (ON/OFF).

• Toggle to "ON" setting and push "ENT".

• Push "ENT" to enter "3-2" (FREQUENCY).

• Toggle to desired frequency.

• Typical settings include 25Hz for sealed box, and 30Hz

or higher for ported box. (depending on tuning freq.)

• Press "MODE" to advance to step 4 below.

ADJUSTING THE SUBSONIC FILTER

Toggle Toggle

MODE

ENTENT

ENT ENT

For Sealed

For Ported

START HERE

STEP 3. (3) SUBSONIC (Subsonic Filter)

Subsonic filters are commonly used to minimize over excursion at

very low frequencies, or to optimize output power by only amplifying

frequencies that can be effectively reproduced. This feature is

essentially a high pass filter with a very low frequency range, and is

selectable from 15Hz to 50Hz in 5Hz increments. Please make sure

that the frequency selected is significantly lower than that of the low

pass filter, unless you have a very specific performance goal in mind.

To the right is example [2], which illustrates the effect of a subsonic

Lower Frequency (LPF) Higher Frequency

0dB

20 30 40 60 100K 1000K10Hz

30Hz Sample Adjustment

To find out more, visit www.alpinetechcenter.com

ToggleToggle

MODE MODE

ENT

• Push "MODE" to access "1" (INPUT).

• Push "ENT" enter "1". Push "ENT" to enter "1-1" (SELECT).

• Toggle to select "1ch" or "2ch". Push "ENT".

• Push "ENT" to enter "1-2" (INPUT LEVEL).

• Toggle to the input level that will properly match the

source unit output to the amplifier input. Severely clipping the

input will result in high distortion, so use the clipping indicator

as a guide to set this level.

• Push "ENT" to enter "1-3" (GAIN FACTOR). Push "ENT".

• Toggle to select "0", "6" or "9".

• Press "MODE" to advance to step 2 below.

SETTING THE INPUT

Toggle

ENT

START HERE

Toggle Toggle

MODE

ENTENT

ENT ENT

• You should be in mode "2" (LPF) now from the

previous step.

• Push "ENT" to enter "2".

• Push "ENT" to enter "2-1" (ON/OFF).

• Toggle to "ON". Push "ENT".

• Push "ENT" to enter "2-2" (FREQUENCY).

• Toggle to desired frequency.

• Push "MODE" to advance to step 3 below.

ADJUSTING THE CROSSOVER

START HERE

STEP 1. (1) INPUT

Proper configuration of the input setup menu is critical for source signal matching with minimal distortion, while also

optimizing the output level relative to other amplifiers in the system. INPUT SELECT (mode 1-1) should be set

according to the physical input signal connection being made, either “2ch” for stereo or “1ch” for single/mono

channel. INPUT LEVEL (mode 1-2) allows the A/D converter’s input to be optimized for the best possible signal

clarity and volume range. Setting this overly sensitive or severely clipping the input can result in very high distortion,

so it is best to use the clipping indicator as general guide. GAIN FACTOR (mode 1-3) is provided for special cases

where additional gain is still required after all other adjustments have been made. While this signal shaping

algorithm allows a higher average output level to be reached at lower source volumes, signal alteration may not be

desirable in some applications. Therefore, it is recommended to return to this adjustment again later after continuing

through the remaining setup steps.

STEP 2. (2) LPF (Low Pass filter)

Eliminating unwanted higher frequencies is essential for optimizing

subwoofer performance and integration with the rest of the system.

Selecting the appropriate cut off frequency of the low pass filter will

depend upon the application, so a wide frequency range (30Hz-

200Hz) is provided to choose from. Please note however, that if the

selected frequency is very close to or overlaps with the subsonic filter,

it will result in little or no output. Also, if an external crossover is

used, the internal filter can be turned off.

Lower Frequency (LP) Higher Frequency

0dB

20 30 40 60

100K 1000K10Hz

80Hz Sample Adjustment

MODE SELECT FUNCTION SELECT

Tables related to MODE and FUNCTION

Mode

MODE FUNCTION

No.

1-1

1-2

1-3

2-1

2-2

3-1

3-2

4-1

4-2

4-3

4-4

5-1

5-2

6-1

6-2

7-1

8-1

8-2

9-1

0-1

0-2

Contents

INPUT MODE

LPF

SUBSONIC

PARAMETRIC EQ

BASS COMP.

TIME CORR.

PHASE

AMP SET

OUTPUT DISABLE

MEMORY

Contents

SELECT

LEVEL

GAIN FACTOR

ON/OFF

FREQUENCY

ON/OFF

FREQUENCY

ON/OFF

FREQUENCY

WIDTH

LEVEL

ON/OFF

MODE *Only MRD-M1000.

ON/OFF

DELAY TIME

0/180

ID No.

TURN ON DELAY

ON/OFF

WRITE

READ

1–1 1–2 1–3

MODE ENT

2–1 2–2

3–1 3–2

4–1 4–2 4–3 4–4

5–1

5–2

7–1

8–1 8–2

9–1

0–1 0–2

(DOWN) (UP)

BUTTON

FLOW

is for only MRD-M1000.

6–1 6–2

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Alpine mrd m 500 Manual

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