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VTC Pro Audio NS21P Service Manual
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VTC Pro Audio NS21P Service Manual

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CANADA
Yorkville Sound
550 Granite Court
Pickering, Ontario
L1W-3Y8 CANADA
Voice: (905) 837-8481
Fax: (905) 837-8746
www.vtcproaudio.com
U.S.A.
Yorkville Sound Inc.
4625 Witmer Industrial Estate
Niagara Falls, New York
14305 USA
Voice: (716) 297-2920
Fax: (716) 297-3689
NS21P
REV1+REV2
SMT Disclaimer
Due to the complex nature of the use of SMT installed components
in Yorkville equipment, we highly caution all service technicians in
attempting to repair or replace SMT factory installed components.
Many of these components may be glued prior to initial soldering.
Replacing SMT components requires expensive
specialized de-soldering equipment and training.
Yorkville Sound will repair and replace defective SMT components
to ensure proper quality assurance and installation is maintained.
Service Manual
Manual-Service-VTC-NS21P-00-1v8 • March 15/2022

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Summary of Contents for VTC Pro Audio NS21P

  • Page 1 Replacing SMT components requires expensive Fax: (905) 837-8746 Fax: (716) 297-3689 specialized de-soldering equipment and training. Yorkville Sound will repair and replace defective SMT components to ensure proper quality assurance and installation is maintained. Service Manual www.vtcproaudio.com Manual-Service-VTC-NS21P-00-1v8 • March 15/2022...

  • Page 2: Important Safety Instructions

    IMPORTA NT SA FETY INSTRUCTIONS This lightning flash with arrowhead symbol, within an The exclamation point within an equilatereal triangle is intended to alert the user to the presence equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous of important operating and maintenance (servicing) instructions in the literature accompanying voltage”...
  • Page 3 NS21P LEVEL POWER LIMIT CLIP INPUT OUTPUT NS21P LEVEL LINK CONNECTIONS FUNCTION 2400 WATT ACTIVE SUBWOOFER ENCLOSURE AS INPUT OR OUTPUT. INTEGRATED DIGITAL SIGNAL PROCESSOR PUSH TO RESET MODEL TYPE: YS1074 A-Z1206B / 1v1 230V 120VAC 50Hz 6,0A 60Hz 12.0A MANUFACTURED BY YORKVILLE SOUND •...
  • Page 4 X-MAX TEMP INPUT OUTPUT 2400 WATT ACTIVE SUBWOOFER ENCLOSURE INTEGRATED DIGITAL SIGNAL PROCESSOR NS21P LEVEL LINK CONNECTIONS FUNCTION AS INPUT OR OUTPUT. NS21P REV2 A-Z1721B / 1v0 230V PUSH TO 120V 50Hz 60Hz 6.5A RESET 3,25A MANUFACTURED BY YORKVILLE SOUND • TORONTO, CANADA...
  • Page 5 Specifications - NS21P Rear Horn Loaded Subwoofer System Type Active Active or Passive 2400 Program Power (Watts) Max SPL (dB) Frequency Response (Hz +/- 3db) 32 - 150 LF Driver(s) Single 21 inch with 6 inch voicecoil LF Program Power(Watts)
  • Page 6 Spécifications - NS21P Caisson subwoofer avec chargement arrière du pavillon Type de système Active Active ou Passive 2400 Puissance Nominale (Watts) Niveau de Pression Sonore Max (dB) Réponse en Fréquence (Hz +/- 3db) 32 - 150 Haut-Parleur - Fréquences Graves...
  • Page 7 NS21P LINE / SPKR LOUD DEEP LEVEL SHAPE HF ROLLOFF MONO BLEND INPUT...
  • Page 8 YS # Description YS # Description YS # Description YS # Description __1N 630V 5%CAP T&R RAD PRO. 2FM 3522 DPDT MINI PC VERT SNP ALT 5213 6438 1N4007 1000V 1A0 DIODE T&R 6119 W250 47K 5%MINI T&R RES __1N 630V 5%CAP T&R RAD PRO. 2FM 5820 470P 200V 5%CAP T&R BEAD 5213...
  • Page 9 YS # Description YS # Description YS # Description 4832 W250 22K T&R RES R170 2010 W167 10R0 2%FLAME PROOF T&R RES 6432 1N5248B 18V0 0W5 ZENER 5% T&R 4832 W250 22K T&R RES R171 6136 W250 3K3 5%MINI T&R RES 6432 1N5248B 18V0 0W5 ZENER 5% T&R 6119...
  • Page 10 M1696-04 Parts Reference List 8/30/2021 YS # Description YS # Description YS # Description AI-ASS 1696-59 ES12P/ES15P/ES18P INPUT/DSP PCB 2339 _10K B LIN 12MM DUAL 21DET P34 7832 MM3Z18VT1G 18V0 0W2 5% SMT ZEN 7878 __1U 25V 20%CAP 1206 SMT X7R PCB1 1696BLANK 1_OZ 2SD 83.9SQIN 03PER ES18/15P...
  • Page 11 M1822 Parts Reference List 3/9/2020 YS # Description YS # Description YS # Description AI-SUB M1822-5 ES21P AMP/SUPPLY PCB 5130 FUSE FAST 0A5 250VDC 350AC SMT 3912 R241 8183 1W00 2R0 1% 2512 SMT RES C203 5979 100N 50V 5%CAP 0805 SMT X7R 5130 FUSE FAST 0A5 250VDC 350AC SMT 3912...
  • Page 12 M2128-01 Parts Reference List 3/14/2022 YS # Description YS # Description YS # Description YS # Description YS # Description AI-SUB M2128-59 ES21P AMP/SUPPLY PCB D309 8159 SMAZ18-13-F 18V0 1W0 5% SMT ZEN R241 8183 1W00 2R0 1% 2512 SMT RES BLANK R242 M2128BLANK...
  • Page 13 BLACK W5:D TO SPEAKER - W5:C W6:D 4 BLACK 4080 2.0UH W6:C 4 250V 6500 275V 2.7mH W6:B 4 250V 2.0UH 4080 W6:A 4 100V 400V W5:B TO SPEAKER + W5:A M1373PCB_DATABASE_HISTORY MODEL(S):- CROW BAR DATE VER# DESCRIPTION OF CHANGE 07-JAN-2009 1.00 FIRST DESIGN 14DEC09...
  • Page 14 M1373 V3.00 EMC FILTER 275V 5262 4080 2.0UH CLINCH 2ozCopper INSERT ORIGIN LONG AXIS ORIGIN M1373 V3.00 SEE LAYOUT DOCUMENTATION...
  • Page 15 SEE LAYOUT DIAGRAM M1373 V3.00 PRODUCTION NOTES M1373PCB_DATABASE_HISTORY MODEL(S):- CROW BAR DATE VER# DESCRIPTION OF CHANGE 07-JAN-2009 1.00 FIRST DESIGN 14DEC09 2.00 PC#7925 CHANGE L4, L5 FROM YS#3769 TO YS#4080 09-FEB-2010 3.00 PC7993: Reduce panel to 3x5 boards...

  • Page 16: Power Supply

    POWER SUPPLY POWER AMP M1375 3/3 M1375 1/3 +15V_LS Thermal Breaker ACDETECT 96 DEG C +130V -130V PSGND +15V -15V Product LS2100P/NS21P LS2100P/NS21P PCB# M1375 Sheet Date: Mon Feb 06, 2017 Rev: Filename: M1375V08sch.sch2006...
  • Page 17 U27:C SPACER GROUND U7:C U19:C U25:C U1:C U18:C U6:C 3899 1N5248B (VCC) U40:C U5:C 100N HERE LM13600N Product LS2100P/NS21P 18V0 U15:D MINI 4148 6745 Dual VCA -15VIP {Function} LS2100P/NS21P PCB# M1375 Sheet -15VIP -15VIP ADD MORE BYPASS CAPS -15V 18uH...
  • Page 18 SIG_GND PSGND 74HC14N SIG_GND U17:C U24:C U12:C 6603 -15V_U12 100N 200V 18uH R101 R124 3899 -15V_MOD 1/8W -15V_U12 1/8W Product LS2100P/NS21P -15V -15V U20:E 10R0 10R0 -15V -15V_U12 FLMP +15V_LS- -15V_MOD 74HC14N FLMP SIG_GND -15V -15V LS2100P/NS21P PCB# M1375 Sheet...
  • Page 19 CIRCUIT -15V_U21 -15V_TRI FLMP FLMP 100N PSGND 6640 ON AMP PCB R160 -15V_TRI 100N 100N R174 -15V_U21 MINI Product MINI LS2100P/NS21P 200V -15V_U21 GND-TRI LS2100P/NS21P PCB# M1375 Sheet +15V_TRI GND-TRI GND-TRI GND-TRI Date: Mon Feb 06, 2017 Rev: Filename: M1375V08sch.sch2006...
  • Page 20 100N 100N 100N 100N 150P 681R0 150P R T V R165 R T V BAT85 TIP-SW TIP-SW R175 470P C118 681R0 BAT85 LS2100P/NS21P R180 R117 BAT85 M1375 IRS2184 R195 IRS2184 250V 250V R193 R192 2.0W 5953 5953 180K C105 0.4"Fins...
  • Page 21 SEE LAYOUT DIAGRAM M1375 NS21P PRODUCTION NOTES 1. LEDS LD1, LD2, AND LD3 ARE TO BE HAND INSERTED. 2. INSTALL YS#8937 TIE AROUND C104. SEE PIC. 3. RTV ALL ELECTROLYTIC CAPACITORS. 4. PCBSA: DO NOT STUFF J3, J5. J7, P2, P3, OR S1...
  • Page 22 14-JAN-2015 PC#8734:D12 and D14 added to U30,U31 regulators. FOD816 (YS#2306) 16-JUN-2015 PC8811: Add NS21P product used on. GG 17-JAN-2017 PC8988: Change C81, C82, C85, and C86 to 1N YS#5220 19-JAN-2017 V08 PC8988: Implemented on board...
  • Page 23 6543 CON_HOLE_156 TO POWER INPUTGND 0805 AMP PCB 100N XC19 W100 CHSGND1 100R 0805 -15VIP CON_HOLE_156 GNDA CHSGND ES12/15/18/21P /NS21P Product(s): POWERED SUBWOOFER INPUT PCB Description: PCB#: M1696 Rev#: EML Rev#: Sheet www.yorkville.com Modified: 2021-08-30 File: INPUT.SchDoc Tmp Rev: V031...
  • Page 24 0805 10K00 470U 0805 GNDA 7012 7012 TO92 TO92 DGGND DGGND 100N 100N 100N RAD .2in RAD .2in RAD .2in GNDA ES12P-ES15P-ES18P-ES21P-NS21P Section: ES12/15/18/21P /NS21P Product(s): M1696 PCB#: Rev#: EML Rev#: Sheet DGGND Modified: 2021-08-30 File: DSP.SchDoc Tmp Rev: V031...

  • Page 25: Change History

    ADDED U10 MEMORY CHIP FOR BLUETOOTH GAIN 2339 8653C 17-SEP-2018 9233 Changed LEDs on pcb to smt LEDs to accommodate light pipes 9323 Added NS21P option 18-AUG-2021 9443 Moved P2 and C42 away from J2. "STYLE_P32" DATE VER# DESCRIPTION OF CHANGE...
  • Page 26 S/N LABEL EXCURSION TP14 8200NH 1K21 GNDA 3K74 TL072 SUPPLY GND CODEC 10K00 ES12/15/18/21P M1696 NS21P 4010 TL072 4140 187K 470P R117 31K6 31K6 1K800 1K800 LINE-OUT 31K6 187K SPEAKER-IN R180 NS21P/ ES21/18/15/12P INPUT PCB = GROUNDS MERGE M1696 NS21P...
  • Page 27 THAT THE PCB WAS PROGRAMMED FOR. ENSURE THE CORRECT BOX IS CHECKED ON BOTH SIDES OF PCB WHERE INDICATED. Assembly Documentation Section: ES12/15/18/21P /NS21P Product(s): THIS SHEET CONTAINS SPECIAL PRODUCTION NOTES AND A LIST OF PCB HARDWARE PARTS REQUIRED FOR THE BUILD. M1696 PCB#:...
  • Page 28 ADDED U10 MEMORY CHIP FOR BLUETOOTH GAIN 2339 8653C 17-SEP-2018 9233 Changed LEDs on pcb to smt LEDs to accommodate light pipes 9323 Added NS21P option 18-AUG-2021 9443 Moved P2 and C42 away from J2. "STYLE_P32" DATE VER# DESCRIPTION OF CHANGE...
  • Page 29 W306:1 N1304 N1310 XFMR-SEC 4096 240V ChGnd1 CON_HOLE_189 CHASSIS GND AC BOARD Critical Safety Components This symbol is placed next to Safety Critical Components Power Supply Section: Product(s): M1822-ES21P-NS21P PCB# M1822 Rev# BOM Rev# Sheet Date Modified: 2020-10-27 Filename: Supply.SCHDOC...
  • Page 30 2x12" 4R 600WPGM #7545 PSA1S 2x15" 8R 1000WPGM #7447 PSA2S 1x12" 4R 2800WPGM #7437 ES12P Woofer Amp Section: 1x15" 4R 2800WPGM #7470 ES15P 1x18" 8R 1200WPGM #7420 ES18P M1822-ES21P-NS21P Product(s): ES12P/ES15P/ES18P/ES21P/PSA1S/PSA2S 1x21" 4R 3000WPGM #7500 ES21P PCB# M1822 Rev# BOM Rev#...
  • Page 31 DESIGN HISTORY AND INFORMATION CHANGE HISTORY POTENTIOMETERS AND KNOBS DATE VER# DESCRIPTION OF CHANGE 08-May-2019 New EMC compliant board 22-Aug-2019 9440 FOR ES12P-ES21P and PSA2S: Replace R242 #5110 0R04 2W with #5142 0R02 5W and DNS R243 23-Sept-2019 9454 REPLACE D308 AND D309 FROM YS#8814 ES1J TO YS#8159 SMAZ18 18V ZENER 9456 R247 moved close to C230 to eliminate oscillation 27-Oct-2020...
  • Page 32 M1822-ES21P-NS21P #8835+ Into Wave #8800 Score C239 L202 5270 U207 D211 C236 C207 R202 Q204 D204 MURA240 100N 250V 100N MMBTA92 ES1J R226 100N R201 C216 R265 330R 15K0 R219 C209 C218 12K1 R224 R255 U201 R247 R227 MURA240 R215...
  • Page 33 PCB ASSEMBLY DOCUMENTATION MOUNTING HARDWARE & INSTRUCTIONS FOR HEAT SPREADER ZC1611: 1- First install #8742 screw to align heatspreader ZC1611 2- Install all devices on Heat Spreader YS#: 8800 DESC: 6-32 KEPS NUT 3- Install #8800 and #8835 for grounding. Nut up. YS#: 8835 DESC: 6-32X1/2 PAN INSERT FROM BOTTOM...
  • Page 34 DESIGN HISTORY AND INFORMATION CHANGE HISTORY POTENTIOMETERS AND KNOBS DATE VER# DESCRIPTION OF CHANGE 08-May-2019 New EMC compliant board 22-Aug-2019 9440 FOR ES12P-ES21P and PSA2S: Replace R242 #5110 0R04 2W with #5142 0R02 5W and DNS R243 23-Sept-2019 9454 REPLACE D308 AND D309 FROM YS#8814 ES1J TO YS#8159 SMAZ18 18V ZENER 9456 R247 moved close to C230 to eliminate oscillation 27-Oct-2020...
  • Page 35 -215V ES21P N1310 XFMR-SEC 4096 240V ChGnd1 CON_HOLE_189 CHASSIS GND AC BOARD Critical Safety Components This symbol is placed next to Safety Critical Components POWER SUPPLY Section: ES21P-NS21P Product(s): PCB#: M2128 Rev#: Eng: G. Giurgea Sheet Modified: 2022-03-01 File: Supply.SCHDOC...
  • Page 36 600WPGM #7545 PSA1S 2x15" 8R 1000WPGM #7447 PSA2S 1x12" 4R 2800WPGM #7437 ES12P 1x15" 4R 2800WPGM #7470 ES15P Section: WOOFER AMP 1x18" 8R 1200WPGM #7420 ES18P 1x21" 4R 3000WPGM #7500 ES21P ES21P-NS21P Product(s): PCB#: M2128 Rev#: Eng: G. Giurgea Sheet...
  • Page 37 TO-247AC IRS2184 #6856 #6857 #2496 #2307 Design Information And History Section: THIS SHEET CONTAINS A CHANGE HISTORY LOG, A LIST OF THE POTS & KNOBS AND A LEADS & PINS REFERENCE SECTION. ES21P-NS21P Product(s): PCB#: M2128 Rev#: Eng: Sheet Modified:...
  • Page 38 M2128-ES21P-NS21P #8835+ Into Wave #8800 Score D210 L202 C239 U207 D211 C236 Q204 C207 R202 D204 C216 100N 100N ES1J R247 R226 100N R201 15K0 R219 C209 C218 12K1 R224 R255 U201 R251 R227 R215 82K5 6K98 C237 TJH2 R209...
  • Page 39 YS#: 8837 heatspreader DESC: 6-32X1/2 PAN NO WASHER NEEDED IMPORTANT: Keep the resistors away from the nearby capacitors (C312, C313) Clip all 4 leads short on D300: Assembly Documentation Section: ES21P-NS21P Product(s): PCB#: M2128 Rev#: Sheet Modified: 2022-03-01 File: Assembly.SchDoc...
  • Page 40 TO-247AC IRS2184 #6856 #6857 #2496 #2307 Design Information And History Section: THIS SHEET CONTAINS A CHANGE HISTORY LOG, A LIST OF THE POTS & KNOBS AND A LEADS & PINS REFERENCE SECTION. ES21P-NS21P Product(s): PCB#: M2128 Rev#: Eng: Sheet Modified:...
  • Page 41 Yorkville Sound 550 Granite Court Pickering, Ontario Canada L1W 3Y8 www.yorkville.com Auto Attend: (905) 837-8550 Fax: (905) 837-8746...