User manual HECO ALEVA SUB 25A

[. . . ] However, it is preferable to place the speaker close to the front loudspeaker in front of the listening position. You should also make sure that the distance from the sides to items and walls is at least 30 centimetres and at least 20 centimetres from the rear as otherwise bass reproduction may be impaired. tHE SUBWOOFERS' OPERATING ELEMENTS (FIG. 1) Mains connection (1), mains-voltage switch (2) The subwoofer is equipped with an integrated amplifier and needs to be connected to a mains outlet by means of the supplied mains cable. [. . . ] 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. Furniture, shelf units) may not be less than 5 cm on any side. 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. The active subwoofer may not be used in very humid rooms. Please do not place any items with naked flames (e. Please do not touch or connect the mains cable when your hands are damp. Never place heavy items on the mains cable. [. . . ] Further claims, and in particular those for price reduction, cancellation of sale, compensation for damages or subsequential damages, are excluded. The guarantee period is not altered by the fact that we have carried out guarantee work. Unauthorized tampering with the equipment will invalidate this guarantee. Consult your authorized dealer first, if guarantee service is needed. [. . . ]