User manual ALPINE MRD-M500

[. . . ] When set to "ON", it literally disables the high current draw output stage of the amplifier, while leaving the input and processing sections active. 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-M500, MRD-M500 and MRD-M1000 Amplifiers Congratulations on your new V12AccuClass-D amplifier purchase. [. . . ] (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. is best to utilize music that will represent your typical heavy bass listening scenario when adjusting levels. · It To find out more, visit www. alpinetechcenter. com Copyright 2002 © Alpine Electronics of America, Inc. Kukje Printing Co. , Ltd 127-2 Gamjeon-dong Sasang-gu Busan Korea Rev. A-101502 Printing in Korea (S) 68P02294K79-O Tables related to MODE and FUNCTION MODE 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 FUNCTION Contents SELECT LEVEL GAIN FACTOR ON/OFF FREQUENCY ON/OFF FREQUENCY ON/OFF FREQUENCY WIDTH LEVEL ON/OFF MODE *Only MRD-M1000. TURN ON DELAY ON/OFF WRITE READ STEP 3. (3) SUBSONIC (Subsonic Filter) MODE SELECT 1 2 3 4 5 6 7 8 9 0 1 FUNCTION SELECT 1­1 2­1 3­1 4­1 5­1 6­1 7­1 8­1 9­1 0­1 0­2 8­2 1­2 2­2 3­2 4­2 5­2 6­2 4­3 4­4 is for only MRD-M1000. 1­3 BUTTON FLOW MODE ENT (DOWN) (UP) 2 3 4 LPF SUBSONIC PARAMETRIC EQ 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. · Push "ENT" to enter "1-3" (GAIN FACTOR). · 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. · 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. [. . . ] · Push "ENT" to enter "2". · Push "ENT" to enter "2-1" (ON/OFF). · Push "ENT" to enter "2-2" (FREQUENCY). · Push "MODE" to advance to step 3 below. [. . . ]