The NS-P320 is composed of the NS-M104, the NS-C104, the NS-E104 and the SW-P201. The NS-M104, the NS-C104 and the NS-E104 loudspeakers are not field serviceable and must be replaced as complete units.
NS-M104
Type....... 2-way bass-reflex speaker system
Magnetic shielding type
Driver.............................. 12 cm (4-3/4") cone woofer. 2.5 cm (1") balanced dome tweeter
Impedance ..................... 6 ohms
Frequency Response....... 65 Hz to 28 kHz
Nominal Input Power...... 50 W
Maximum Input Power... 160 W
Sensitivity....................... 89 dB/2.83 V/m
Dimensions (W X H X D) ..140 x 300 x 167 mm
(5-1/2" x 11-13/16" x 6-9/16")
Weight............... 1.9 kg (4 lbs. 3 oz)
Finish................. Black color (U, C, R, A, B, G)
Silver color (U, C, R, K, A, B, G)
NS-C104
Type.................. 2-way bass-reflex speaker system
Magnetic shielding type
Driver................ 7 cm (2-3/4") cone woofer x 3 1.5 cm (5/8") tweeter
Impedance ....... 6 ohms
Frequency Response..... 95 Hz to 20 kHz
Nominal Input Power.... 70 W
Maximum Input Power.. 180 W
Sensitivity..................... 91 dB/2.83 V/m
Dimensions (W X H X D) .....440 x 85 x 122 mm
(17-5/16" x 3-5/16" x 4-13/16")
Weight...... 1.7 kg (3 lbs. 11 oz)
Finish........ Black color (U, C, R, A, B, G)
Silver color (U, C, R, K, A, B, G)
NS-E104
Type......... Full-range bass-reflex speaker system
Magnetic shielding type
Driver.............................. 10 cm (4") cone woofer
Impedance ..................... 6 ohms
Frequency Response....... 110 Hz to 20 kHz
Nominal Input Power...... 30 W
Maximum Input Power...110 W
Sensitivity...... 91 dB/2.83 V/m
Dimensions (W X H X D) ........120 x 250 x 92 mm (4-3/4" x 9-13/16" x 3-5/8")
Weight..... 1.1 kg (2 lbs. 6 oz)
Finish.... Black color (U, C, R, A, B, G)
Silver color (U, C, R, K, A, B, G)
SW-P201
Type..... Advanced Yamaha Active Servo Technology
Driver...... 16 cm (6-5/16") cone woofer (JA1678)
Magnetic shielding type
Amplifier Output....... 50 W/5 ohms
Frequency Response.... 30 Hz to 200 Hz (–10 db)
Power Supply
U, C models ..... AC120V, 60 Hz
A model .......... AC240V, 50 Hz
B, G models .... AC230V, 50 Hz
R, K models .... AC110-120/220-240V, 50/60 Hz
SW-P201 DISASSEMBLY PROCEDURES
Removal of Front Grille
The front grille is fixed to the cabinet with dowels at 6 locations. * As a screwdriver (for slotted head screw) is used for removal, use special care not to cause damage to the cabinet.
Using the screwdriver inserted in the gap between the front grille and the cabinet (bottom side first), push up the front grille.
Remove the front grille by lifting it up. When installing the Front Grille, apply quick-drying bond to the dowels and then fit them into dowel holes for secure installation. (The Front Grille will come off easily if its dowels are fitted into dowel holes only.)
Removal of Rear Panel
Remove 14 screws. Arrow marks ( => ) are printed to identify the screws to be removed. When assembling the Rear Panel, check to ensure that the packing is not damaged so as to prevent air leakage from occurring.
SCHEMATIC
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