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ATC SCM12P PRO [4/7] M o n i t o r p l a c e m e n t contd
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5:Connection
SCM12/12i Pro monitors are equipped with a “bi-wire”
connection panel to enable separate amplification of the bass/mid
driver and tweeter. The connection panel is shown in Fig. 4.
If not bi-wiring, connect your speaker cable to either the upper
or lower horizontal pair of terminals. Should you wish to take
advantage of the bi-wire facility remove the linking bars, between
vertical pairs of terminals. The upper horizontal pair of terminals
are connected to the tweeter. The lower horizontal pair are
connected to the bass driver.
Terminals can accommodate either stripped bare cable ends,
4mm banana plugs or spade terminals. Do not use crimps on the
bare wire ends as the difficulty in compressing them can cause
poor link bar connection.
Always use a good quality speaker cable with 2.5mm
2
minimum
cross sectional area per conductor (79 strand). For cable runs
longer than 5 metres use a significantly heavier gauge cable.
Consult your dealer or consultant for specific cable
recommendations.
Ensure that the positive and negative terminals on each
connection panel are connected to the corresponding positive
and negative terminals on the amplifier.
A lack of bass output and very wide unstable stereo image is
most likely caused by the left and right loudspeakers being
connected out of phase. If the system displays these
characteristics, please check the polarity of the wiring.
6:Amplification
The choice of partnering amplifier for the monitors will have
significant influence on the performance of the system. Consider
the following when selecting the amplifier:
n With any passive loudspeaker there is a trade off between
low frequency extension and sensitivity. These monitor’s
extended low frequency response means the sensitivity is
relatively low. It is therefore advisable to select a power amplifier
of relatively high power output capabilities. Typically, best
performance comes with use of amplifiers capable of >150W
continuous into 8ohms.
n Use of an underpowered amplifier will result in the
premature distortion of the system and increased risk of damage
due to voice coil overheating
n Valve or solid state amplifiers with high output impedances
should be auditioned carefully, to establish that their
characteristic reduced damping factor at low frequencies is
acceptable.
Fig. 4
SCM12/12i Pro Passive Input Panel
4:Monitor Placement (contd.)
5.1 or 7.1 Surround Positioning.
All loudspeakers should be equidistant from the listening
position – see Fig. 3: distance L=C=R=LS=LR=RR=RS. For 5.1
systems, position the surround speakers between110° and 150°
degrees (ITU spec. is 110°). If ideal positioning isn’t possible,
position loudspeakers as close as possible to ideal. Try to avoid
placing subwoofers in corners, very close to walls, and on the
midpoint between two parallel walls
All rooms vary, and it is a good idea to experiment with both
listening and speaker position until a good compromise is
reached. For professional installations the requirements are
often very specific. Please consult an experienced professional
acoustician if necessary.
Object Based Surround and Immersive Audio Systems.
Due to the number of possible object based surround and
immersive audio loudspeaker configurations, the topic is beyond
the scope of this manual. For specific system advice it is
recommended that you contact a representative from one of the
format developers, typically Dolby, DTS or Auro Technologies.
Fig. 3
5.1 and 7.1 Surround Loudspeaker Positioning
Содержание
- P r o l o u d s p e a k e r s e r i e s 2
- D e s c r i p t i o n 3
- M o n i t o r p l a c e m e n t 3
- S a f e t y wa r n i n g s 3
- U n p a c k i n g h a n d l i n g 3
- A m p l i f i c a t i o n 4
- C o n n e c t i o n 4
- M o n i t o r p l a c e m e n t contd 4
- Important 5
- S c m 1 2 i p r o i n s t a l l a t i o n 5
- C a r e m a i n t e n a n c e 6
- L i s t e n i n g 6
- S p e c i f i c a t i o n s 6
- All atc products are guaranteed against any defect in materials or workmanship 7
- For a period of two years from the date of purchase 7
- From the date of purchase 7
- Provided that the failure was not caused by misuse accident or negligence 7
- Purchasers who complete and return the warranty card 7
- This guarantee does not limit statutory rights 7
- Wa r r a n t y c o n t a c t 7
- Will have their warranty period extended up to a period of six years 7
- Within this period we will supply replacement parts free of charge 7
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