User manual KENWOOD AT-300

[. . . ] REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE USER TO THE PRESENCE OF UNINSULATED "DANGEROUS VOLTAGE" WITHIN THE PRODUCT'S ENCLOSURE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK TO PERSONS. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE USER TO THE PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE APPLIANCE. Before applying power AT-300 [EN] Introduction Your choice of this product indicates that you are a devotee to excellence in sound reproduction. We appreciate your patronage and take pride in the long tradition of quality components that our company represents. [. . . ] Rotating the knob clockwise increases the volume level, and rotating the knob counterclockwise decreases the volume level. 5 CROSSOVER control knob ! Turn the control knob to adjust the cutoff frequency of the highfrequency components in the sound output from the Subwoofer. Standby mode When the STANDBY indicator is lit amber, it indicates that the power of the unit is in the Standby mode. In the Standby mode, the audio output is cut off in order to prevent unnecessary noise from the subwoofer when no signal is input to it. If the subwoofer is not to be used, turn its power off by pressing the POWER switch. Caution concerning operation An excessive input level to the Subwoofer may impair the sound quality or damage the unit. Careful attention should therefore be paid to the following precautions. Do not increase the output of the amplifier to a high level while the low-frequency level is enhanced by the amplifier's tone control or loudness control. When operating the amplifier switches or when placing the stylus on an analog record, set the amplifier volume to its minimum level. Sound adjustment AT-300 [EN] How to use the VOLUME CONTROL knob, PHASE selector switch, CROSSOVER control knob The VOLUME CONTROL knob, PHASE selector switch and CROSSOVER control knob can be adjusted to match the condition of the listening room and/or the characteristics of the left and right front speakers. 11 CROSSOVER control knob function Sound Pressure Level CROSSOVER control knob Frequency The characteristics above express the images and the details are different from the actual characteristics. Examples of standard adjustment according to the type of front speakers Crossover frequency adjustment (CROSSOVER control knob) Front speaker Small speaker Medium speaker Large speaker Crossover Frequency 120 ~ 200 Hz 80 ~ 120 Hz 60 ~ 80 Hz Depending on the listening room condition and the front speaker characteristics, other adjustment setting than the examples shown above may provide more natural bass sound and more effective bass reproduction. Try various adjustment settings to select the optimum one for your listening room. In case of difficulty A simple mistake may often be misunderstood as a failure. In case of a trouble, check the applicable symptom in the following table before calling for service. Symptom No sound is output. Cause ÷ The connection cords are not plugged into the jacks properly. ÷ The volume is set to the minimum. ÷ The connected amplifier or receiver does not output the subwoofer pre-out signal (applicable when the amplifier or receiver is equipped with the pre-out on/off function). ÷ The speaker cords are connected in the reverse phase. THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE USER TO THE PRESENCE OF UNINSULATED "DANGEROUS VOLTAGE" WITHIN THE PRODUCT'S ENCLOSURE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK TO PERSONS. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE USER TO THE PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE APPLIANCE. ESPAÑOL Before applying power SW-505D (EN) Introduction Your choice of this product indicates that you are a devotee to excellence in sound reproduction. We appreciate your patronage and take pride in the long tradition of quality components that our company represents. So that you can get the most out of your unit, we suggest that you take the time to read through this manual before you hook up and operate your system. This will acquaint you with operating features and system-connection considerations so that your listening pleasure will be enhanced right from the start. You will notice that in all aspects of planning, engineering, styling, operating convenience and adaptability we have sought to anticipate your needs and desires. Important Items For the U. S. A. FCC WARNING This equipment may generate or use radio frequency energy. Changes or modifications to this equipment may cause harmful interference unless the modifications are expressly approved in the instruction manual. The user could lose the authority to operate this equipment if an unauthorized change or modification is made. 15 NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment may cause harmful interference to radio communications, if it is not installed and used in accordance with the instructions. [. . . ] Use this position when the high frequencies in the subwoofer signal have already been cut by the Dolby Digital or DTS circuitry. The crossover frequency adjustment is invalid when this position is set. Note Depending on the listening room condition and the front speaker characteristics, other adjustment setting than the examples shown above may provide more natural bass sound and more effective bass reproduction. Try various adjustment settings to select the optimum one for your listening room. ITALIANO In case of difficulty A simple mistake may often be misunderstood as a failure. In case of a trouble, check the applicable symptom in the following table before calling for service. Symptom ESPAÑOL No sound is output. Cause ÷ The connection cords are not plugged into the jacks properly. [. . . ]