NHT Pro. A20 Digital Meter. From Low. Voltage 3 R814. Power 3. Supply. From Left Power Amp. From. Rigjht 2. Amp R810 4.

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Leo Jacobs
5 years ago
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1 igital Meter R0.K V 0 0.UF U0 R 0 V R0 K 0 0.uF 0.V R9 R K K V V V N0 0UF/V Low 0UF/V 00UF/V R R 00K 00K 0 pf Left N0 0 N N 0 VR0 0K 0 0.uF R 0M 0 0.uF k U0 9 0 V0 0.uF N0 V PI 0 09 R R 0 SPL GREEN N R 0 Rigjht K Mode S N K R V YELLOW V K Q0 N R K R K TMP LUE ON0 V LE0 V U0 RP F G V R K I/RO E 9 E U0 V RI F LT G RESET I O 0* G 0 0.uF 0.uF R V GN Y0.0MHz 0 pf R0 R K K R 0 R K R K Q0 R9 K Q0 0 igital Meter Q0 Size ocument Number Rev ate: Tuesday, October 0, 00 Sheet of

2 Input uffer 0 p R0 k % V Left Input JK0 TRS INPUT JK0 XLR FEMLE R0 k % R0 k % 0.uF 0.uF 0 V R0 I0 V 0 00nF 0uF p k % N0 P0 To 0 R0 V JK0 I0 09 TRS INPUT R0 0 k %.uf 00nF 0uF V R0 0 Right Input k %.uf JK0 XLR FEMLE V 0 R0 p k % To Tone ontrol p k % 0 Input uffer Size ocument Number Rev ate: Tuesday, October 0, 00 Sheet of

3 Left R0 K % R0 K % nf R 0/W 0 F k k/w 00pF Q09 R9 R R k k Q0 Q0 K J0 Q0 R 9 Q R 9k Tone Q 0k R ontrol F Q0 Q0 0 R K % 0 R. R k R0 Z0 K0 00pF 0uF/0V k/w k RELY SPST J0 R0 Q0 R uf/v 9 J0 K %./W R 0 R. R k R I0 V Left./W 0 09 & 0 R0 R0 uf/0v R k TP R0 k % VR0 rossover 0pF k % k % 00 R R J0 R0../W uf/0v R R Q0 0./W R L0 k 0/w R On Left Heatsink R9. k R 0 Z0 0 % 0/w uh uf/0v R0 0u/v R0 R k % 00/W 00/W Q0 Q V 0 0 Thermistor 0 pf Q0 0 k R0 R 0.F/0V 0 N00 R.uF/V k k 00nF/00V S0 nf R0 k % J0 R k To igital Meter TEST R K onnect to Volt Meter, adjust VR0 for.mv reading on Volt Meter. 0 0uF/0V Q R k 9 0./00v R R9 t Right R0 K % R0 K % nf R 0/W 0 F k k/w 00pF Q09 R9 R R k k Q0 Q0 K J0 Q0 Q R 9 R 9k Tone Q 0k R F ontrol Q0 Q0 0 R 0 K % R. R k K0 00pF R0 0uF/0V k/w Z0 J0 R0 Q0 R k uf/v 9 RELY SPST J0 K %./W R 0 R. R k I0 Right./W R V & 0 R0 R0 uf/0v R 0 k TP R0 k % 0pF k % VR0 k % 00 R R rossover R0. J0 uf/0v R R Q0./W 0./W R L0 k 0/w R On Left Heatsink 0 R9. k R 0 % 0/w uh uf/0v R0 0u/v R0 R k % Z0 00/W 00/W Q0 Q V 0 0 Thermistor 0 pf Q0 0 k R0 R 0 N00 R.uF/V 0.F/0V k k 00nF/00V S0 R K 0 0uF/0V Q 9 0./00v R R9 t nf R0 k % J0 R k To igital Meter TEST onnect to Volt Meter, adjust VR0 for.mv R reading on Volt Meter. k 0 lifier Size ocument Number Rev Tuesday, October 0, 00 ate: Sheet of

4 Left rossover in lifier Output Low To P0 * * THESE VLUES RE TO E MESURE.9mH % 0. ohms XLR MLE J0 R0 WITH THE INUTORS MOUNTE IN THE 00ohms % 0W ON0 0 P0 L0 uf 0% 0V % F MPLIFIER. THIS MY USE OTH PRT VLUES TO E IFFERENT FROM EH OTHER, WHEN MESURE OUTSIE THE MPLIFIER. 0 V uf 0% 00V % F R0 k % Q0 R0 k % R0 0 00uF/v 0k % 0 0uF/v Right rossover in lifier Output Low To P0 P0 L0 *.9mH % 0. ohms XLR MLE J0 R0 00 ohms % 0W ON0 0 uf 0% 0V % F 0 V uf 0% 00V % F R0 k % Q0 R0 k % R0 0 00uF/v 0k % 0 0uF/v 0 Passive rossover Size ocument Number Rev ate: Tuesday, October 0, 00 Sheet of

5 0 ables rossover GN P0 lack Left Right Tone ontrol Tone ontrol GN lack lack lack lack lack Yellow/Green V lack V rown Yellow V J0 To Input uffer rossover To IE Socket rossver Low Low Low Left Low Tone ontrol Right J0 rown lack rown rown lack To igital Meter To igital Meter To igital Meter To LE rossover rossover To igital Meter To Headphone Jack lack V J0 rown P0 Yellow rossver Left ON0 ON0 P0 J0 Low ON ON0 lack To Tone J0 rown ontrol lack lack GN GN GN J0 J0 ON0 P0 P0 P0 P0 J0 ON ON ON9 J0 ON ON0 ON0 ON0 90 ON0 ON0 J0 N0 N90 ON0 To Tone ontrol N0 ON0 Input uffer Green Yellow Yellow Green To Tone ontrol 0 ables Size ocument Number Rev ate: Tuesday, October 0, 00 Sheet of

6 LEFT POWER SUPPLY Relay Protector R0 0K 0 0 N00 uf/00v R0 K To lack 0 00pF/kV 00pF/kV 0000uF/00V 00nF/00V V RIGHT POWER SUPPLY Relay Protector K900 To V GN P0 V GN P uF/00V uF/00V pF/kV 00nF/00V 0 00pF/kV 00nF/00V 0 R0 0K 0 0 To Low 0 KUG 0 uf/00v 0 00pF/kV 0 KUG pF/kV P0 0 P0 P0 00pF/kV lue lue lack K900 T.F lack lue rown lack POWER lue lack V 0V V 0V SW 0 SW Selector K900 F 0V/9 0nF/00V To igital isplay 0 lue 0000uF/00V 00nF/00V V P0 P0 rown T.F 09 R0 K 0 P0 00pF/kV N00.nF Size ocument Number Rev I/P ate: Tuesday, October 0, 00 Sheet of

7 Low ON V V V 0 N R0 uf To igital 0 Meter K V R0 k R0 k 0 ON rossover ON9 V V V V U0 R0 ON 0 0 rossover LE90 N R0 k R0 0 N R0.k 0 V RE 90 Q0 R0 00k R0 k V 0 N R09.k 0 V Q0 R0 0 N V 00k R R0 0 R0 00k 0 R0 00k U0 0 OUT IN GN.9k ON 00nF 000uF/V V R k.9k R k 90 LE90 GREEN 0 V U0 R0 00k N 0 N ON V 0 00uF/V 0 00nF 0 00nF U0 OUT IN GN GN 0 000uF/v uF/v 0 00uF/v 00uF/v 00nF/00V(M) 00nF/00V(M) 0 W0 K900 To Tone ontrol OUT IN 0 U0 9 V 00uF/V ON 0 Low Size ocument Number Rev ate: Tuesday, October 0, 00 Sheet of

8 Tone ontrol V R0 k0 R09 k R k0 R 0 R 0 R 0 R 0 R9 0 R 0 SW0 RSW SW0 RSW SW0 RSW 00nF 00nF 00nF 00nF ypass aps On Opamps R0 k00 R9 0 R 0 R R 00nF 00nF 00nF 00nF k Sensitivity ontrol 0 pf oundary ontrol Position ontrol R k V R 0 09 pf R9 K V R k R K 00pF R k V V R k00 V U0 U0 U0 U0 R0 k00 ON0 R k 0 0 R k n R k 0 R0 0nF 0nF 90nF 90nF nf K R9 k V V V V R0 k0 R0 k R k0 R 0 R 0 R 0 R 0 R0 0 R 0 V SW0 RSW SW RSW SW RSW 0 ON0 R0 k00 R0 0 R 0 00uF/V V R R 9 ON0 k 00uF/V Low Sensitivity ontrol R 0 0 pf R k 00pF 0 pf oundary ontrol Position ontrol V R k R0 K R k R k00 R k V V V V V Input uffer R0 K R0 k00 0 nf 0K 0K V R 0 R 0 K K U0 U0 0 Tone ontrol ON0 ON0 Size ocument Number Rev V U0 R HEPHONE MP V V R k 0 0nF 0 0nF R V V V U0 R k 0 N R9 K TO PHONE JK n V U0 90nF 90nF R0 k V R ate: Tuesday, October 0, 00 Sheet of U0 k ON0

9 ing onnections J0 XLR FEMLE J0 XLR FEMLE INPUT UFFER LEFT POWER MPLIFIER Signal Wire Harness RIGHT POWER MPLIFIER Signal Wire Harness Signal Wire Harness TONE ONTROL LEFT POWER SUPPLY LOW VOLTGE POWER SUPPLY RIGHT POWER SUPPLY LEFT ROSSOVER IN MPLIFIER IGITL METER RIGHT ROSSOVER IN MPLIFIER 0 ing iagram Size ocument Number Rev ate: Tuesday, October 0, 00 Sheet of

CD300.

CD300. 00 Service Information www.laney.co.uk 9 9 -V J R9 N N N R R K K U/0V I R K U/0V R R R K K K N N R0 V U/0V 0 U/0V R 0K R 0K U/0V W 00K R9 M I R 00 U/0V 9 W W0K R 0K R K 0 0 R K W W0K K R0 MP K U/0V R 0K