User manual ALPINE MRD-M1000

[. . . ] Please note that this is the only amplifier function that does not engage/disengage in real time, but requires the remote lead to be cycled off/on for the selection to take effect. Therefore, if it is accidentally set to "ON" during programming, there will be no output the next time the amplifier is activated. Additional uses include: bench setup with a low current DC power supply, amp valet, tuning or troubleshooting larger multiple amp/subwoofer systems, etc. START HERE V12 AccuClass-D Setup Guide For MRD-M300, MRD-M1000 and MRD-M1000 Amplifiers Congratulations on your new V12AccuClass-D amplifier purchase. Before you get started, there are a few things you should know about this unique amplifier that will help you optimize performance for your personal tastes or TM particular application. [. . . ] This innovative design not only offers unparalleled tuning capability and accuracy, but also allows direct digital coupling to the power output stage for cleanest and most powerful bass possible. As with any amplifier however, proper setup is essential if you are to maximize your listening experience. Please read the quick explanation and setup procedure for each feature listed on the following pages. TM SETTING SAFE MODE TO "OFF" · Press and depress the "MODE" button until you are in mode "9" (Output Disable). · Push "ENT" and push "ENT" again to select "9-1" (ON/OFF). Note: This setting will not take effect until the amp is turned off and then on again. Toggle ENT DISP ENT F I N I S H STEP 0. (0) MEMORY Memory Mode allows you to store all amplifier settings in an auxiliary backup memory. Once stored, additional tweaks or adjustments can be made while retaining the ability to recall the original settings at a later time. Note: This is simply a convenience feature, since all settings are saved in real time as adjustments are made, and will remain even if power is lost during setup. Important notes: · To Typical causes for little or no output 1) Output Disable is on: Go to Step 9 (Mode 9 on the amp) and set to "OFF", then cycle amp power. 2) Subsonic and LPF frequency selections overlap or are too close together: Adjust the crossover properly 3) If using RUX-4280 (RACC) remote subwoofer level is turned down : Make sure the RACC is in normal 4) 5) 6) 7) display mode (voltage or temperature) and adjust the level control. Defective or broken RCA cables): Replace RCA connectors Blown fuse: Replace Fuse with proper value Remote trigger is not active: Check remote turn-on lead with a voltage meter Bad ground or power connection: Check and replace ground connector maximize the output power from this amplifier, you must use a 2 ohm load. · Before adjusting the amplifier settings, set the signal source (head-unit) level to minimize distortion. · 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. · Toggle to select "0", "6" or "9". · Press "MODE" to advance to step 2 below. ENT ENT ENT STEP 1. (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. SETTING THE PARAMETRIC EQ · You should be in mode "4" (PARAMETRIC EQ) now from the previous step. · Toggle to "ON" and push "ENT" · Push "ENT" to enter "4-2". (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. 3 Lower Frequency (LP) Higher Frequency 50Hz Sample Adjustment 0dB 10Hz 20 30 40 60 100K 1000K 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. START HERE ENT ENT Toggle ENT Toggle MODE Toggle ENT ENT Toggle ENT Toggle T O S T E P 2 dB For MRD-M300 OR ENT ENT Hz For MRD-M1000 MODE dB dB Toggle ENT ENT ENT T O S T E P 5 DISP OR T O E X I T 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 (30Hz200Hz) 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. [. . . ]