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5

PLACEMENT OF THE SURROUND SPEAKERS

There are many opinions about where surround or “rear” speakers should be mounted. The 
following is based on the fi ndings of the best academics, and on our experience with many in-
stallations. These placement recommendations apply to all the IC models. The illustration below 
shows the speakers custom-installed in recesses in the wall. Alternatively the equivalent in-wall 
models could be used.

If two surrounds are used in a standard 5.1 confi guration (not 7.1 or EX), they are best mounted 
to the sides of the listening area. This means straight to the sides of the listener or in line with 
the primary row of seating, plus or minus 15 degrees. This is preferred over back wall mounting 
for several reasons: It places the surrounds at locations where the difference between left ear 
and right ear discrimination is at a maximum. This gives the maximum sense of “envelopment” 
or being surrounded by sound. Rear mounted speakers force a huge angular gulf between the 
front primary speakers and the rear speakers. The sound image is inherently discontinuous. Also, 
front to rear aural discrimination is not very strong. Differentiation between front and rear 
speakers will not be as strong as the effect of adding speakers to the side. 7.1 or EX systems 
that use side and rear speakers together overcome all of these obstacles and give both maxi-
mum envelopment and a more continuous surround effect.

A second factor to consider is the evenness of sound coverage over the seating area. Most 
surround processors have features for setting the balance of all channels. A circulating noise 
signal is adjusted in each channel until the apparent or measured sound level is even. Of course, 
moving to another seat will shift this balance somewhat. Well-placed surround speakers will 
minimize the level variation from seat to seat. The best way to achieve evenness is to increase 
the distance of the surround speakers from the listening area. Mount them high on the side 
walls or even on the ceiling. As a good rule of thumb, surrounds should be on the side walls at 
least one foot above the height of a standing listener. If the speakers are ceiling-mounted, they 
should be close to the side walls, well away from an overhead position.

If a large theater room with three or more rows of seats is planned, then more than one pair of 
surround speakers should be used to give more even coverage and a more diffuse sound fi eld. 
We recommend that a pair of surrounds be used for every other seating row (the fi rst, the third, 
the fi fth, etc.). This follows standard cinema practice.
 

/PTIONAL$IRECT2ADIATION
3URROUND3PEAKER,OCATIONS

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Содержание IC-K7

Страница 1: ...IC K7 IC CR7 IC LCR7 IC D7 Owner s Manual IC K7 CR7 LCR7 D7 Final indd 1 IC K7 CR7 LCR7 D7 Final indd 1 11 3 08 5 51 03 PM 11 3 08 5 51 03 PM...

Страница 2: ...5 khz No Black cloth over MDF frame 19 x 6 x 9 inches 483 x 152 x 229mm depth includes 7 16 12mm grille Textured black paint 18 lbs 8 16kg each IC K7 56 Hz 20 kHz bass reflex 77 Hz 20kHz with port pl...

Страница 3: ...ed black paint 20 lbs 9 07kg each IC D7 62 Hz 20 kHz 50 300W 4 ohms 90dB SPL 1 SEAS silk dome ferrofluid cooling Dual 61 2 inch 165mm copolymer with butyl rubber surround 5mm excursion 2kHz Yes Black...

Страница 4: ...speakers from which they are derived PLACEMENT OF THE FRONT CHANNEL SPEAKERS A home theatre system includes three loudspeakers placed across the front of the listening room The distance between the le...

Страница 5: ...EX systems that use side and rear speakers together overcome all of these obstacles and give both maxi mum envelopment and a more continuous surround effect A second factor to consider is the evennes...

Страница 6: ...the other terminal Be sure the positive and negative speaker terminals of the am plifier are connected to the corresponding red and black terminals of the speakers All wire is marked in some way to m...

Страница 7: ...l Acoustics service representative and to present proof of purchase from an authorized Snell dealer in the form of your sales slip when requesting service Excluded from this warranty is damage that re...

Страница 8: ...snellacoustics com www snellacoustics com 2009 Snell Acoustics All Rights Reserved Specifications are subject to change without notice Covered by patents issued and or pending Part 542 1060 IC K7 CR7...

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