User manual ELECTRO-VOICE X-ARRAY

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Manual abstract: user guide ELECTRO-VOICE X-ARRAY

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[. . . ] Special Applications Merlin ISP-100 Integrated Signal Processor for Electro-Voice X-ArrayTM Install Loudspeakers OWNERS MANUAL Rev-A Merlin X-Array Install Manual page 2 T Merlin X-Array Install Manual TABLE OF CONTENTS TT 1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DESCRIPTION of X-ARRAY INSTALL SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. 1. X-Array Install Two-Way Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Each of the QuickMAP Merlin X-Array Install Manual FIGURE Electro-Voice X-Array Install 6 - 3-Way Quick Map Merlin ISP-100 3-Way Quick Map File: xi-3way. qms FILTER SET 8 Bands (Filter_a_Low) LIMITER (Limiter_a_Low) DITHER (Dither_a_Low) LOW OUT Channel a (Out_5a) (Vers. 14, 1998) INPUT Channel a (In_1a) INPUT GAIN & LEVEL METER (Gain_a) FILTER SET 6 Bands (Filter_a) DELAY 0 to 1350 ms (Delay_a) LF SELECTOR (Select_a) MF FILTER SET 8 Bands (Filter_a_Mid) LIMITER (Limiter_a_Mid) DITHER (Dither_a_Mid) MID OUT Channel a (Out_5b) HF FILTER SET 7 Bands (Filter_a_High) COMPONENT DELAY 0 to 50 ms (Delay_a_High) LOOK-AHEAD DELAY 0 to 50 ms (DelayLim_a_High) LIMITER (Limiter_a_High) DITHER (Dither_a_High) HIGH OUT Channel a (Out_4a) Side Chain Threshold Control Input SELECTOR 2 to 1 (Select_Sub1) FILTER SET 6 Bands (Filter_Sub1) DELAY 0 to 1350 ms (Delay_Sub1) LIMITER (Limiter_Sub1) DITHER (Dither_Sub1) SUB1 OUT (Out_2a) COMBINER (2xComb_Sub2) FILTER SET 6 Bands (Filter_Sub2) DELAY 0 to 1350 ms (Delay_Sub2) LIMITER (Limiter_Sub2) DITHER (Dither_Sub2) SUB2 OUT (Out_2b) FILTER SET 8 Bands (Filter_b_Low) LIMITER (Limiter_b_Low) DITHER (Dither_b_Low) LOW OUT Channel b (Out_4b) LF INPUT Channel b (In_1b) INPUT GAIN & LEVEL METER (Gain_b) SELECTOR (Select_b) FILTER SET 6 Bands (Filter_b) DELAY 0 to 1350 ms (Delay_b) MF FILTER SET 8 Bands (Filter_b_Mid) LIMITER (Limiter_b_Mid) DITHER (Dither_b_Mid) MID OUT Channel b (Out_3a) HF FILTER SET 7 Bands (Filter_b_High) COMPONENT DELAY 0 to 50 ms (Delay_b_High) LOOK-AHEAD DELAY 0 to 50 ms (DelayLim_b_High) LIMITER (Limiter_b_High) DITHER (Dither_b_High) HIGH OUT Channel b (Out_3b) Side Chain Threshold Control Input channels contain an inline delay before the crossover which can be varied over wide limits to compensate for speaker position, speaker characteristics, and other system parameters. Each output of the QuickMAP also includes inherent delays which depend on the amount of processing that resulted in that particular output. Ideally, the inherent delays are the same on all the outputs, but sometimes they can not be made equal. All outputs of the two-way QuickMAP have a latent delay of 10 sample periods (about 208 us). Unavoidably however, the three-way QuickMAP has unequal latent output delays which are listed as follows: 1. Outputs a_Low, a_Mid, b_Mid, Sub1, and Sub2: 10 sample periods (about 208 us at the 48 kHz sample rate); 2. To compensate for the additional delay on the high-frequency outputs, the component offset delay block settings have been reduced by two sample periods. The additional three-sample delay in the low-frequency path of the "b" channel is uncompensated, but adds a negligible amount of delay to the woofer. QuickMAP Input and Output Assignments The inputs of both the two-way and three-way QuickMAPs have been assigned to module #1 of the ISP-100. Where possible, the remaining outputs follow the Merlin ISP-100 convention of assigning outputs in low- to high-frequency order, high- to low-number module order, and letter "a" to "b" order. When looking at the ISP-100 from the rear, this conveniently places the low-frequency outputs on the left and the remaining higherfrequency outputs proceeding left to right. Both sub-channel outputs have been assigned to the same output module in each of the two QuickMAPs (module #4 for the two-way QuickMAP and module #2 for the three-way). If subwoofers are not used, these modules may be left out of the ISP-100, and need not be ordered. Note that gaps will exist in the module lineup if the sub channels module is not installed. page 9 Merlin X-Array Install Manual 5. PROJECTS AND QUICKSETS Individual ISP-100 projects for each of the X-Array Install systems were created that utilize the two previously mentioned QuickMAPs. Each of these projects contain one or more QuickSETs which define the individual parameters and settings of each of the blocks in the QuickMAP. This section shows each of these projects and the associated QuickSET parameters for each of the X-Array Install systems. QuickSETs are included for each system for several different modes and combinations including: 1. conventional three-way and overlap threeway modes between woofer and midrange for the 15-inch woofer three-way projects (Xi-1153/64 and Xi-2153/64). Future QuickSETs may contain overlap parameters for the 18-inch woofer three-way projects and also for overlapping the subwoofer with the two- and three-way projects. Refer to a previous section for more information on overlapping and its effects. [. . . ] Because the measured gain is 3 dB higher than the assumed gain of 42 dB, the threshold must be reduced by 3 dB yielding -28 dB. Conversely, if your measured gain was only 28 dB, 14 dB lower than assumed 42 dB gain, the threshold must be increased by 14 dB yielding -11 dB. SOFTWARE AVAILABILITY The X-Array Install Merlin ISP-100 setup software and manual is available three different ways: 1. page 15 Merlin X-Array Install Manual 9. OPERATION Assuming that the new X-Array Install Merlin ISP-100 Projects and QuickMaps have been properly installed as described in the previous section, the following procedure should be followed to start an appropriate project to configure the ISP-100 for an X-Array Install system on your PC (additional information is found in the ISP-100's hardware and software manuals): 1. [. . . ]

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