Assessments - 2, GPA: 4
(
)
)
|
Fotos e especificações Yamaha YST-SW325 |
Facilidade de uso
ADJUSTING THE SUBWOOFER BEFORE USE ADJUSTING THE SUBWOOFER BEFORE USE This subwoofer’s frequency characteristics 40 50 60 70 80 90 dB HIGH CUT 50 Hz HIGH CUT 150 Hz HIGH CUT 90 Hz 20 50 100 200 500Hz Frequency response graph* The figures below show the optimum adjustment of each control and the frequency characteristics when this subwoofer is combined with a typical front speaker system. ¦EX.1 When combined with a 4” or 5” (10 cm or 13 cm) acoustic suspension, 2 way system front speakers If you are using NS-325F speakers as front speakers, use the following example as a reference when adjusting settings. dB PHASE 90 NORM REV 80 70 (90Hz) (REV) 60 50 40 20 50 100 200 500Hz YST-SW325 Front speaker Frequency response graph* ¦EX.2 When combined with an 8” or 10” (20 cm or 25 cm) acoustic suspension, 2 way system front speakers dB PHASE 90 NORM REV 80 70 (70Hz) (REV) 60 50 40 20 50 100 200 500Hz YST-SW325 Front speaker Frequency response graph* *This diagram does not depict actual frequency response characteristics accurately. 13 English ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY II ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY II As this technology uses speaker units controlled by the negative impedance drive of the amplifier and resonance generated between the speaker cabinet volume and port, it creates more resonant energy ( the “air woofer” concept) than the standard bass reflex method. This allows for bass reproduction from much smaller cabinets than was previously possible. Yamaha’s newly developed Advanced YST II adds many refinements to Yamaha Active Servo Technology, allowing better control of the forces driving the amplifier and speaker. From the amplifier’s point of view, the speaker impedance changes depending on the sound frequency. Yamaha developed a new circuit design combining negative-impedance and constant-current drives, which provides a more stable performance and clear bass reproduction without any murkiness. High-amplitude bass sound Port Cabinet Advanced impedance Converter Active Servo Processing Amplifier Signals of low amplitude Air woofer (Helmholtz resonator) Signals TROUBLESHOOTING TROUBLESHOOTING Problem Cause What to Do Power is not supplied even though the STANDBY/ON button is set to the ON position. The power plug is not securely connected. Connect it securely. The POWER switch is set to the OFF position. Set the POWER switch to the ON position. No sound. The volume is set to minimum. Raise the volume up. Speaker cables are not connected securely. Connect them securely. Sound level is too low. Speaker cables are not connected correctly. Connect them correctly, that is L (left) to L, R (right) to R, “+” to “+” and “–” to “–”. Setting of the PHASE switch is not proper. Set the PHASE switch to the other position. A source sound with few bass frequencies is played. Play a source sound with bass frequencies. Set the HIGH CUT control to a higher position. It is influenced by standing waves. Reposition the subwoofer or break up the parallel surface by placing bookshelves etc. along the walls. The subwoofer does not turn on automatically. The POWER switch is set to the OFF position. Set the POWER switch to the ON position. The STANDBY/ON button is set to the STANDBY position. Set the STANDBY/ON button to the ON position. The AUTO STANDBY switch is set to the OFF position. Set the AUTO STANDBY switch to the “HIGH” or “LOW” position. The level of input signal is too low. Set the AUTO STANDBY switch to the “HIGH” position. The subwoofer does not turn into the standby mode automatically. There is an influence of noise generated from external appliances etc. Move the subwoofer farther away from such appliances and/or reposition the connected speaker cables. Otherwise, set the AUTO STANDBY switch to the “OFF” position. The AUTO STANDBY switch is set to the OFF position. Set the AUTO STANDBY switch to the “HIGH” or “LOW” position. The subwoofer turns into the standby mode unexpectedly. The level of input signal is too low. Increase the volume of the amplifier and set the AUTO STANDBY switch to the “HIGH” position. The subwoofer turns on unexpectedly. There is an influence of noise generated from external appliances etc. Move the subwoofer farther away from such appliances and/or reposition the connected speaker cables. Otherwise, set the AUTO STANDBY switch to the “OFF” position. English 15 SPECIFICATIONS SPECIFICATIONS Driver ..........................................20 cm (8”) cone woofer Magnetic shielding type Amplifier Output (100 Hz, 5 ohms, 10% THD) ................................................................................150 W Frequency Response ............................... 25 Hz - 180 Hz Power Supply USA and Canada models ..................AC 120 V, 60 Hz U.K. and Europe models...................AC 230 V, 50 Hz Australia model.................................AC 240 V, 50 Hz Asia and General models ...............................AC 110-120/220-240 V, 50/60 Hz Power Consumption.............