User manual ALPINE V12 ACCUCLASS-D SETUP

[. . . ] Secondly, it provides a variable turn-on delay that can be used to minimize inrush current in large multi-amp systems, or to eliminate any turn-on "pop". NOTE: If using a RUX-4280 (RACC) with more than 1 AccuClass-D amplifier, be sure to set each amplifier with a different ID Number (1-8). Amplifiers with the same ID will cause the RACC to display "NO AMP. " STEP 9. (9) OUTPUT DISABLE Previously known as "Safe Mode", this feature provides a simple way to safely adjust the all DSP functions with the amplification circuit turned off, eliminating the possibility of speaker damage during setup. When set to "ON", it literally disables the high current draw output stage of the amplifier, while leaving the input and processing sections active. [. . . ] 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. (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. 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 ADJUSTING THE SUBSONIC FILTER · You should be in mode "3" (SUBSONIC) now from the previous step. · 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. START HERE 2 Lower Frequency (LPF) Higher Frequency 30Hz Sample Adjustment 0dB 10Hz 20 30 40 60 100K 1000K * 5­2 Toggle ENT ENT Toggle Hz For Sealed OR ENT ENT For Ported Hz MODE 5 6 7 8 9 0 BASS COMP. PHASE AMP SET OUTPUT DISABLE MEMORY T O S T E P 4 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. SETTING THE INPUT START HERE · Push "MODE" to access "1" (INPUT). MODE · 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. [. . . ] 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. ADJUSTING THE CROSSOVER · You should be in mode "2" (LPF) now from the previous step. Copyright 2002 © Alpine Electronics of America, Inc. START HERE 1 Lower Frequency (LP) Higher Frequency 80Hz Sample Adjustment 0dB STEP 5. (Bass Compensation) Digital Bass Compensation utilizes Alpine's exclusive MediaXpanderTM processing technology to enhance bass definition and output. [. . . ]