XQP-531 Optical De-Esser 电路图.pdf

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1、XQP 610 N. 14th Street Enid, OK 73701 580-231-1941 REDUCTION potentiometer Adjusts the amount of sibilance reduction Red LED lights with de-essing action FREQUENCY switch Provides 3 corner frequency choices for the sidechains high pass filter XQP 531 Optical De-esser 500 Series VPR Module IN switch

2、Silently activates de-essing Yellow LED indicates IN X10 switch Increases sidechain sensitivity by 10 Green LED indicates X10 The XQP 531 Optical De-esser provides smooth, non-destructive de- essing in the convenient VPR format. Dual VACTROL optoisolators insure consistent optical gain reduction whe

3、n sibilance is present. The 531s sidechain utilizes a high pass filter with three selectable corner frequencies (rather than a narrow bandpass filter), so sibilance occurring at different frequency points can be effectively reduced. The 531 is built with high-quality Analog Devices opamps in the sig

4、nal path. The XQP 531 is a re- creation of the original Dane Optical De-esser #31 designed and manufactured in the 1990s. Minor circuitry adjust- ments have been made to enhance stability and consistency. Input impedance: Output impdedance: Frequency response: Max. output level: THD: Noise: Attack t

5、ime: Release time: Current requirement: 43K balanced 50 balanced 4Hz - 90KHz (-3dB) 22dBu 0.002% 1KHz -80dBm, unweighted 10msec. 18msec. 86mA 16VDC SPECIFICATIONS IN X10 REDUCTION FREQUENCY OPTICAL 531 DE-ESSER 0 4 8 12 16 20 24 28 32 36 40 X Y Z XQP RadioFans.CN 收音机爱 好者资料库 XQP 531 Owners Guide Chas

6、sis + Output - Output Audio Common - Input + Input + 16 VDC Power Ground - 16 VDC 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. OPERATION The 531 is simple to use. The FREQUENCY switch allows you to select one of three cutoff points for the sidechains high pass filter. These points, labeled X,

7、Y, and Z (long before it was realized that XQP would be making this product) are in the area of 3, 5, and 7KHz respectively. As mentioned, the filter is high pass - not band pass. This ensures that all sibilance occurring above the selected frequency point will be dealt with by the optoisolators. Yo

8、u are not forced to home in on a very narrow frequency band. Simply select the highest of the three points that allows adequate sibilance reduction. The amount of gain reduction is adjusted with the REDUCTION control in conjunction with the X10 switch. The X10 switch multiplies the sensitivity of th

9、e sidechain by a factor of ten, allowing the 531 to be used effectively on low level signals. With a +4 signal, it allows all consonents to be totally obliterated, guaranteeing loss of employment, so use with caution. The red LED lights up when gain reduction is taking place in the same manner as th

10、e LEDs in the optoisolators, providing a meter of gain reduction. Finally, the IN switch activates the sidechain. Disengaging this switch silently bypasses the unit, although the audio path remains active. WARRANTY The XQP 531 Optical De-esser is warranted for ten years from the date of purchase. Yo

11、u do not have to fill out the enclosed warranty card, but we would appreciate the info. You may also register your 545 online at . XQP 610 N. 14th Street Enid, OK 73701 580-231-1941 1.8 We think you will find the 531 a very smooth and unobtrusive sibilance controller. We have not attempted a surgica

12、l device here, but a musical one. We believe that subtle processing is the best approach for this task. After all, you dont want to eliminate sibilance, but reduce it. We dont think you want to eliminate it, but its a free country. 43K balanced 50 balanced 4Hz - 90KHz (-3dB) 22dBu 0.002% 1KHz -80dBm

13、, unweighted 10msec. 18msec. 86mA 16VDC Input impedance: Output impedance: Frequency response: Max. output level: THD: Noise: Attack time: Release time: Current requirement: SPECIFICATIONS IN X10 REDUCTION FREQUENCY OPTICAL 531 DE-ESSER 0 4 8 12 16 20 24 28 32 36 40 X Y Z XQP INTRODUCTION Thank you

14、for purchasing the XQP 531 Optical De-esser. The 531 is a high frequency limiter designed specifically for control of sibilance. It uses a pair of VACTROL optoisolators to provide smooth high frequency gain reduction for natural de-essing. The 531 is a VPR module (hopefully you are already aware of

15、this) designed to fit into the common 500 series racks orginated by API. It follows the standard API pinout. XQP is a member of APIs VPR Alliance, and the 531 is an approved APR Alliance product. XQP RadioFans.CN 收音机爱 好者资料库 IC1 IC3 8 10 C3 3.3F C4 3.3F TR1 50K R1 22.1k C5 0.12F C6 0.12F 12+V 14-V CR

16、1 CR2 7 13Common 1Chassis C2 10F C1 10F Gain Trim C7 68pF R17 475 R18 475 AOI1AOI2 4 1 2 3 5 6 R2 10 IC4a IC4b R3 22.1K C18 0.0015F C17 0.001F C19 0.0022FX Y Z C15 0.0015F C14 0.001F C16 0.0022F Frequency S1 C21 0.0015F C20 0.001F C22 0.0022F 1 2 3 5 6 7 12 11 10 D B 6 5 4 R5 10K NC 3 2 1 R8 10K R9

17、4.75K A C 7 8 9 Reduction LED3 IC4c 8 9 10 R4 10K R6 10K IC4d 14 13 12 R7 10K C23 330pF 4 11 NC S2 X10 R11 4.75K R10 348 X10 LED1 R13 1K C24 0.12F C25 0.12F R12 10 In LED2 R14 1K NC NC In S3 P1 10KB Reduction R15 348 IC5 3 2 6 IC2 6 2 3 C8 0.1F C9 0.12F C10 0.12F C11 0.12F 7 4 7 4 C13 10F NP C12 10F NP 8 1 2 3 65 2 4 + Out + In - In - Out 5Common R16 75 7 4 C27 0.12F C28 0.12F XQP 531 Optical De-esser Version 2.4 9/11/10 2010 XQP IC1: SSM2141 IC2: AD711 IC3: SSM2142 IC4: TL084 IC5: LF351 CR1: 1N914 AOI1: VTL5C1 AOI2: VTL5C1 C26 0.12F XQP