What to do if my Yamaha YST-SW515 has no sound?
If your Yamaha Subwoofer isn't producing any sound, first, make sure the volume isn't set to the minimum; if it is, increase it. Also, ensure that the speaker cables are securely connected.
What to do if my Yamaha Subwoofer does not turn on automatically?
If your Yamaha Subwoofer isn't turning on automatically, ensure that the POWER switch is in the ON position and the STANDBY/ON button is set to ON as well. Also, check that the AUTO STANDBY switch is set to either “HIGH” or “LOW”. If the input signal is too low, set the AUTO STANDBY switch to “HIGH”.
How to troubleshoot power issues with a Yamaha YST-SW515?
If your Yamaha Subwoofer is not supplying power, make sure the power plug is securely connected. Also, verify that the POWER switch is set to the ON position.
Why Yamaha YST-SW515 Subwoofer power is not supplied?
If the Yamaha Subwoofer's power isn't turning on even when the STANDBY/ON button is in the ON position, check that the power plug is securely connected. Also, verify that the POWER switch is set to the ON position.
Why does my Yamaha YST-SW515 turn into standby mode unexpectedly?
If your Yamaha Subwoofer turns into standby mode unexpectedly, it might be due to a low input signal level. Try setting the AUTO STANDBY switch to the “HIGH” position.
Why is the sound level too low on my Yamaha Subwoofer?
If your Yamaha Subwoofer sound level is too low, ensure the speaker cables are correctly connected: L to L, R to R, “+” to “+” and “–” to “–”. Adjust the PHASE switch to the other position. If you are playing a source with few bass frequencies, play a source sound with bass frequencies or set the HIGH CUT control to a higher position. Finally, reposition the subwoofer or break up the parallel surface by placing bookshelves etc. along the walls.
Why does my Yamaha YST-SW515 turn on unexpectedly?
If your Yamaha Subwoofer turns on unexpectedly, it could be due to interference from nearby appliances. Try moving the subwoofer farther from these appliances and/or repositioning the speaker cables. Alternatively, set the AUTO STANDBY switch to the “OFF” position.
Explains the meaning of warning symbols like lightning flash and exclamation point used in the manual.
Lists all items included with the subwoofer system upon purchase.
Details how to connect the subwoofer using amplifier's pin jack line output terminals.
Explains how to connect the subwoofer using amplifier's speaker output terminals.
Instructions for connecting speaker cables to the subwoofer's input terminals.
Guidance on connecting the subwoofer to the AC power source after all connections are made.
Describes the function of the power indicator, STANDBY/ON, B.A.S.S., HIGH CUT, and VOLUME controls.
Details the VOLTAGE SELECTOR, POWER switch, and rear terminal functions.
Step-by-step guide to set volume, HIGH CUT, and PHASE for optimal sound balance.
Guidance on selecting MOVIE or MUSIC modes for enhanced audio playback.
Explains the meaning of warning symbols like lightning flash and exclamation point used in the manual.
Lists all items included with the subwoofer system upon purchase.
Details how to connect the subwoofer using amplifier's pin jack line output terminals.
Explains how to connect the subwoofer using amplifier's speaker output terminals.
Instructions for connecting speaker cables to the subwoofer's input terminals.
Guidance on connecting the subwoofer to the AC power source after all connections are made.
Describes the function of the power indicator, STANDBY/ON, B.A.S.S., HIGH CUT, and VOLUME controls.
Details the VOLTAGE SELECTOR, POWER switch, and rear terminal functions.
Step-by-step guide to set volume, HIGH CUT, and PHASE for optimal sound balance.
Guidance on selecting MOVIE or MUSIC modes for enhanced audio playback.
This document is the owner's manual for the Yamaha YST-SW515 Subwoofer System, featuring Advanced YST and QD-Bass Technology. It provides essential information for safe operation, connection, adjustment, and troubleshooting of the subwoofer.
The Yamaha YST-SW515 is a subwoofer system designed to enhance the low-frequency sound reproduction of an existing audio setup, delivering powerful and realistic super-bass. It incorporates Yamaha's Advanced Active Servo Technology II and QD-Bass (Quatre Dispersion Bass) technology to achieve high-quality bass output. Advanced YST II is an evolution of Yamaha's Active Servo Technology, which uses a direct connection between the amplifier and speaker, along with negative impedance drive and constant-current drives, to ensure accurate signal transmission and precise speaker control. This technology creates a "air woofer" concept, generating more resonant energy than standard bass reflex methods, allowing for powerful bass from smaller cabinets. QD-Bass technology is a unique Yamaha innovation that radiates sound efficiently in four horizontal directions, contributing to the subwoofer's effective bass dispersion.
One of the primary functions of this subwoofer is to augment the bass response of a stereo system, providing a more immersive and theater-like audio experience. It can be easily integrated into various audio systems, offering flexible connection options. Users can connect the subwoofer to either the speaker output terminals or the line output (pin jack) terminals of their amplifier or AV receiver. The manual provides detailed instructions for both scenarios, including diagrams for connecting one or two subwoofers. For amplifiers with line output terminals, the subwoofer connects to the SUBWOOFER (or LOW PASS) terminal on the amplifier to the INPUT2 terminal on the subwoofer. If the amplifier has SPLIT SUBWOOFER terminals, the subwoofer should be connected to both the L and R sides of the INPUT2 terminal. For amplifiers without line output terminals, the subwoofer connects to the amplifier's speaker output terminals, and then the main front speakers connect to the subwoofer's OUTPUT terminals. This allows the subwoofer to process the low-frequency signals before passing the higher frequencies to the main speakers.
The YST-SW515 offers several usage features to optimize its performance and user convenience. The front panel includes controls for STANDBY/ON, B.A.S.S. (Bass Action Selector System), HIGH CUT, and VOLUME. The STANDBY/ON button allows users to toggle the subwoofer between active and standby modes. The B.A.S.S. button enables selection of bass effects suitable for the source material, with "MOVIE" mode enhancing low-frequency effects for a thicker, deeper sound, and "MUSIC" mode cutting excessive low-frequency components for clearer, lighter sound that reproduces melody lines more distinctly. The HIGH CUT control adjusts the high-frequency cut-off point, allowing users to match the subwoofer's sound to their front speakers by cutting off frequencies above a selected point. The VOLUME control adjusts the overall output level of the subwoofer.
On the rear panel, additional controls include the POWER switch, AUTO STANDBY switch, and PHASE switch. The POWER switch provides a complete power cut-off from the AC line when set to OFF, or allows the STANDBY/ON button to manage power when set to ON. The AUTO STANDBY switch enables an automatic power-switching function, where the subwoofer enters standby mode after 7-8 minutes of no input signal and automatically powers on when a bass signal below 200 Hz is detected. This function can be set to "LOW" for normal activation, "HIGH" for detecting lower-level input signals, or "OFF" to deactivate it. The PHASE switch (NORM/REV) allows users to adjust the phase of the subwoofer's output, which can improve sound quality depending on the speaker system and listening conditions.
The manual emphasizes the importance of proper placement for optimal performance. For a single subwoofer, it is recommended to place it on the outside of either the right or left front speaker. If using two subwoofers, placing them on the outside of each front speaker is suggested. To prevent "standing waves" that can cancel out bass sounds, the subwoofer should be faced obliquely to the wall or parallel surfaces should be broken up with objects like bookshelves. Non-skid pads are provided to prevent movement due to vibrations.
Maintenance features primarily involve proper handling and cleaning. The manual advises against using chemical solvents for cleaning, recommending a clean, dry cloth instead. It also provides warnings about not opening the cabinet, avoiding exposure to rain or moisture, and ensuring proper ventilation to prevent overheating.
Safety instructions are prominently featured, covering general electrical safety, proper installation, and environmental considerations. Users are advised to read all instructions, keep the manual, heed warnings, and follow all instructions. Key safety points include not using the apparatus near water, cleaning with a dry cloth, ensuring proper ventilation, avoiding heat sources, and protecting the power cord. It also warns against defeating the safety purpose of polarized or grounding-type plugs. For servicing, users are directed to qualified service personnel in case of damage or malfunction.
The manual also includes FCC information for US customers, emphasizing compliance with regulations and advising against unauthorized modifications. It provides guidance on resolving potential interference issues with other electronic devices. For UK customers, specific instructions are given for wiring a 3-pin plug, detailing the color codes for neutral and live wires.
Overall, the Yamaha YST-SW515 Subwoofer System is designed for users seeking to enhance their audio experience with powerful, high-quality bass, offering flexible connectivity, adjustable sound controls, and convenient automatic power management, all while emphasizing user safety and proper maintenance.
General| Subwoofer frequency range | 20 - 160 Hz |
|---|---|
| Power consumption (standby) | 0.5 W |
| Product color | Cherry (fruit) |
Weight and Dimensions| Subwoofer depth | 382 mm |
|---|---|
| Subwoofer width | 350 mm |
| Subwoofer height | 430 mm |
| Subwoofer weight | 19000 g |
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