User manual HECO ALEVA SUB 25A

[. . . ] Please study the instructions and information below carefully before using your new loudspeakers. tHE HECO ALEVA SUB 25A ACTIVE SUBWOOFER This subwoofer has been adapted to provide the best visual and acoustic match to the HECO Aleva range of loudspeakers. However, it goes without saying that it may be combined with other loudspeakers. When connecting your loudspeaker, please make sure that everything has been switched off. [. . . ] It automatically switches to standby after receiving no signals for around 15 minutes, the power LED returns to red. This is the setting for when subwoofer isn't used over long periods. Line inputs (6) For connecting to level outputs on a receiver/amplifier (stereo mode), see Fig. Level control (8) This control is used to set the bass volume according to your preferences. Set the bass control of your amplifier into its centre (linear) position. Now, play back some music and set the volume control of the amplifier to the desired level. Warning: when connecting to an AV receiver's subwoofer output, the subwoofer level should be set to 0 dB in the receiver's set-up. cross-over frequency control (9) Used to set the upper limit of the subwoofer operating range. The cross-over frequency should be set to approxi-mately 100 to 150 Hz when the system is used in combination with shelf loudspeakers and to 50 to 100 Hz with stand loudspeakers. Phase switch (10) In normal use the phase switch should be set to 0°. However, in rare cases it may be advantageous to set the phase to 180° (e. If the subwoofer is far away from the front satellites or in the event of unfavourable acoustics in the room). Generally speaking: the setting where the lower base tone area has a fuller sound is the correct one. Fuse (11) Only use a fuse with the parameters indicated next to the fuse holder on the rear of the amplifier. Do not place any flower vases or other filled recipients on top of the subwoofer. The distance between the active subwoofer enclosure and the walls of the room or other objects (e. The aluminium plate and cooling fins of the amplifier at the rear of the active subwoofer serve to cool the built-in amplifier; for this reason, they must also be at least 5 cm away from all objects and must not be covered (e. The bass reflex opening(s) on the active subwoofer must not be covered (e. [. . . ] Unauthorized tampering with the equipment will invalidate this guarantee. Should it prove necessary to return the component to the factory, please insure that · The component is packed in original factory packing in good condition · The quality control card has been filled out and enclosed with the component · Your enclose your receipt as proof of purchase. Shipping damages, either readily apparent or concealed (claims for such damages must be lodged immediately with forwarding agent, the railway express office or post office). (You must notify your dealer directly of such defects within three days of purchase. [. . . ]