User manual HECO METAS XT 501

[. . . ] To prevent impairment of sound quality, we recommend cables with cross-sections of at least 2. 5 mm² for lengths up to 3 m and at least 4 mm² for lengths above 3 m. For good sound it is imperative that the cables must be connected in such a way that the speakers are "in phase". This means that the black negative terminals on the speakers (-) must be connected to the negative (-) terminals on the amplifier, the red positive (+) speaker terminals to the positive (+) amplifier terminals. [. . . ] When you install the loudspeakers the following distances should be maintained: Metas XT 501, 701: at least 20 cm away from the rear wall and at least 30 cm from the side walls. this will prevent excessive emphasis of the bass range. Metas XT 301: shelf loudspeakers should also be as free-standing as possible, the distance to the sides and rear to walls and items should be at least 10 cm, the tweeters should be located at ear height. You should use the supplied spikes when setting the speakers up. This isolates them from the supporting surface, preventing unpleasant resonance effects. You can choose between metal and hard rubber spikes for the standing speakers, while the enclosed hard rubber spikes are used for the shelf speakers. The spikes are screwed into the threaded bushes on the bottom of the speaker. The HECO Metas XT loudspeakers are ideal for use with the Metas XT Sub 251A active subwoofer. HECO METAS XT 301, 501 AND 701 AS A FRONT OR REAR LOUDSPEAKER The front loudspeakers are positioned at ear height on the left and right as equidistant from the television as possible. The rear loudspeakers are placed at ear height or a little above on the left and right besides or better behind the listening position. Otherwise all the recommendations made in the previous chapter also apply. Metas XT 301: if possible, the cross-over frequency for the front and rear channels should be adjusted to approximately 80 Hz in the AV receiver's set-up. The loudspeaker is placed immediately on or under the television set. All HECO loudspeakers are designed and built for optimum sound reproduction with the tone controls in the central position ­ i. Turning up the bass and treble controls too far delivers more power to the woofers and/or tweeters, and at high volumes this can actually destroy the speaker units!Weak amplifiers with low output ratings can actually be more dangerous for your speakers at medium volumes because weak amplifiers may overload much faster than powerful ones and this causes measurable and audible distortion, which is extremely dangerous to your loudspeakers. Always turn the volume down immediately as soon as you hear distortion!If you like listening to loud music make sure that your amplifier can deliver at least as much power as the speakers' power-handling rating. If the output of your amplifier is significantly higher than the rated power handling capacity of your speakers extremely high volumes can physically destroy your speakers. This doesn't actually happen often but you should be aware that it is possible. [. . . ] (You must notify your dealer directly of such defects within three days of purchase. Equipments which have been repaired incorrectly or modified or where the case has been opened by persons other than us. Reimbursement of cools, without our prior consent, when repairing damages by third parties. Consult your authorized dealer first, if guarantee service is needed. [. . . ]