LANSCHE AUDIO
OPERATING INSTRUCTIONS No.7
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4. Miscellaneous Instructions
4.1. Warm-Up Phase
To develop its maximum potential output, the speaker requires a warm-up period (burn in) of about
15–20 operating hours after being transported. During this time, the properties of all mechanical parts
shift until they finally attain the values defined during the development of the speaker. In other words,
the suspension of the chassis becomes more flexible, exerting a positive influence on the quality of
sound reproduction.
4.2. Load Rating
The load rating of the No.7 is especially high due to its design and the materials used in its
construction. The speakers can be subjected to very high volumes without a reduction in sound
quality (after the warm-up phase). Because of the efficiency of the No.7 speakers, they are also
suitable for use with high-quality but lower-output amplifiers. However, the following point must be
taken into consideration:
Amplifiers with very low output and amplifiers with equalizers or tone controls can produce distorted
signals in the higher frequencies at very high volumes. This clipping effect can even permanently
damage the best speaker technology. Damage caused in this way is not covered by the warranty.
4.3. Caring for Your Speakers
To get the most out of your LANSCHE AUDIO speaker system, please observe the following
instructions: Do not place the speakers in direct sunlight.
Avoid extreme temperature fluctuations and protect the components from humidity. Do not clean
the housing surfaces with any substances that contain alcohol or are abrasive. Use the lint-free cloth
provided instead. Whenever cleaning your system, be sure to switch off the entire chain of devices.
5. Technical Specifications No.7
Description:
3-way passive loudspeaker vented-box system
Tweeter chassis:
1 x 8mm (0.3”) Corona Plasma
Midrange chassis:
2 x 15.5 cm (4”)
Bass chassis:
4 x 22cm (8.7”) composite glass fibre/polyester fabric cone, coated
Crossover frequencies:
200Hz / 2.5kHz
Impedance:
6.8Ω nominal, 4.9Ω minimum
Sensitivity:
92 dB/1W/1m
Maximum level:
114dB/1m
Frequency response:
25Hz - 150kHz ± 3dB
Input terminals:
2 sets: 1 x bass, 1 x mid+high, connection for bi-wiring or bi-amping
Internal wiring:
Silver plated OFC
Dimensions (H x W x D ):
175 x 32 (43) x 61 cms, 69 x 12.5 (17) x 24 inches
Weight:
130 kg (286lbs)