Snell IC-B7S Bedienungsanleitung

IC-B7S

IC-B7VH

IC-C7S

IC-C7VH

Owner’s Manual

SPECIFICATIONS

Frequency Response (±3dB)

Recommended Ampliﬁer

Nominal Impedance

Sensitivity (2.83v at 1m)

Tweeter

Midrange

Bass Driver

Crossover Points

Boundary Compensation

Grille

Dimensions

(HxWxD)

Finish*

Weight

* Custom paint and grilles are available for an extra charge

IC-B7S

IC-B7VH

48 Hz–20 kHz

75–250W

4 ohms

89dB SPL

1” SEAS Excel Millenium

Dual 41/2-inch (114mm)

SEAS Excel Magnesium

Dual 8-inch (203mm)

Scanspeak polycone

300 Hz / 2.8kHz

Yes

Black cloth over MDF frame

30 x 13 x 11 inches

†

(762 x 331 x 280mm)

depth includes 5/8” (16mm) grille

Textured black paint

63 lbs (28.6 kg) / each

†13 x 30 x 11 inches (331 x 762 x 280mm)

with horizontal orientation

IC-B7S

48 Hz-20 kHz

75–250W

6 ohms

89dB SPL

1” SEAS Excel Millenium

Dual 41/2-inch (114mm)

SEAS Excel Magnesium

Dual 8-inch (203mm)

Scanspeak polycone

300 Hz / 2.8kHz

Yes

Black cloth over MDF frame

21 x 161/2 x 11 inches

(534 x 420 x 280mm)

depth includes 5/8” (16mm) grille

Textured black paint

60 lbs (27.3 kg) / each

IC-B7VH

IC-C7S

48 Hz-20 kHz

75–250W

4 ohms

89dB SPL

1” SEAS silk dome

Dual 41/2-inch (114mm)

SEAS treated paper

Dual 8-inch (203mm)

Scanspeak polycone

300 Hz / 2.8kHz

Yes

Black cloth over MDF frame

21 x 161/2 x 11 inches

(534 x 420 x 280mm)

depth includes 5/8” (16mm) grille

Textured black paint

60 lbs (27.3 kg) / each

IC-C7VH

48 Hz–20 kHz

75–250W

4 ohms

89dB SPL

1” SEAS silk dome

Dual 41/2-inch (114mm)

SEAS treated paper

Dual 8-inch (203mm)

Scanspeak polycone

300 Hz / 2.8kHz

Yes

Black cloth over MDF frame

30 x 13 x 11 inches

†

(762 x 331 x 280mm)

depth includes 5/8” (16mm) grille

Textured black paint

63 lbs (28.6 kg) / each

†13 x 30 x 11 inches (331 x 762 x 280mm)

with horizontal orientation

IC-C7S IC-C7VH

INTRODUCTION: HIGH END PERFORMANCE IN A PLAIN WRAPPER

The concept behind the Snell IC (In-Cabinet) series models is simple — loudspeakers that deliver

performance equivalent to the acclaimed, elegantly-ﬁnished Series 7 in-room models, that are

housed in cabinets with a “utility” ﬁnish, and are mechanically and acoustically designed for

easy integration into built-in installations.

These simply ﬁnished models are in no way acoustically or mechanically inferior to the in-room

Snell speakers. They use the same high-quality parts as their in-room counterparts — high

excursion woofers, wide dispersion tweeters, low resonance cabinets and audiophile grade

crossovers components. This ensures that the sound they produce is as powerful, yet clean and

effortless, as the in-room speakers from which they are derived.

In addition, the IC Series models incorporate design elements that anticipate the unpredictable

acoustical characteristics of custom installations. In some custom installations, for example,

the location of the bass drivers can cause their sound to interact with the physical surround-

ings and produce a mid-bass response error. This results in a “heavy” or “chesty” quality that is

particularly noticeable in voices. The Snell IC models have Boundary Compensation switches to

help control this problem.

Design elements such as this, and many others, ensure that the IC Series models provide the

discerning listener with the same engaging experience as that provided by a traditional loud-

speaker.

PLACEMENT OF THE FRONT CHANNEL SPEAKERS

A home theatre system includes three loudspeak-

ers placed across the front of the listening room.

The distance between the left and right speakers

determines the width of the stereo image. If

the speakers are placed too close together, the

image will be too narrow; too far apart and the

blend will suffer, creating a hole in the middle.

When properly placed, your speakers will create

a continuous “virtual image” from left to right,

with an illusion of sound outside, in front of, and

behind the speaker systems.

We recommend an angular separation between

45 degrees and 60 degrees (when viewed from

above). At the minimum 45° separation the

distance between the speakers is 75% of the

distance from the speakers to the listener. At the

maximum 60° separation the distance between

the speakers is equal to the distance from the

speakers to the listener.

Creating a seamless sound image across the front of the speakers requires careful placement.

The distance from the left, right, and center channel speakers to the listener location should be

as close to equal as possible.

The front channel speakers should be installed so the height of the midrange/tweeter module

is as close as possible to the height of a seated listener’s ears. Try to keep the front channel

tweeters within two vertical feet of that height.

TIP: Our ears use high frequencies to locate the

source of a sound. When the IC-B7S or IC-C7S

are used for the front left and right speakers

in a system, the orientation of the midrange/

tweeter array signiﬁcantly effects the width

of the stereo image. Changing the orientation

of the speakers changes the separation of the

midrange/tweeter module by 18 inches. Use

this if necessary to get the ideal separation and

stereo image.

X + 18” (457mm)

LISTENING

AREA

45° - 60°

PLACEMENT OF THE SURROUND SPEAKERS

There are many opinions about where surround speakers should be mounted. The following is

based on the ﬁndings of the best academics, and on our experience with many installations.

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. Note: The choice of models used in the illustration is arbitrary. Any of the models

covered in this manual may be used in any of the surround locations. However, the midrange/

tweeter array in the IC-B7VH / IC-C7VH must always be vertically oriented.

If two surrounds are used in a standard 5.1 conﬁguration (not 7.1 or EX), they are best mounted

directly to the sides of the primary seating location, preferably within ±15°. (See the illustra-

tion.) This is preferred over back wall mounting for several reasons: It places the surround

speakers where our ear’s ability to discriminate left from right is at its best. This gives the

maximum sense of “envelopment” or being surrounded by sound. Furthermore, mounting the

rear speakers behind the listener increases the angle between the front and rear speakers. This

reduces the likelihood that there will be a continuous front-to-rear sound image. Finally, our

ear’s ability to discriminate the front-to-rear location of a sound source is not very strong.

Locating surround speaker to the side of the listener helps in this regard. 7.1 or EX systems that

use side and rear speakers together overcome all of these obstacles and give both maximum

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 improve evenness is to increase

the distance of the surround speakers from the listening area. Mount them high on the side

walls or even in the ceiling. Surround speakers should be 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 ﬁeld.

We recommend that a pair of surrounds be used for every other seating row (the ﬁrst, the third,

the ﬁfth, etc.). This follows standard cinema practice.

Alternate Surround Speaker Locations

Preferred Surround Speaker Locations

15°

BASIC SPEAKER CONNECTION

Plan the wiring paths from the speakers to the ampliﬁer. We recommend 16-gauge wire for

runs up to 25 feet, and 14-gauge wire for longer runs. Be sure the speaker wire does not rest or

rub against any sharp or pointed objects. Allow an extra foot of wire at the speaker location to

make it easier to connect the speaker before setting it in position .

For normal, single wire connection, unscrew (turn counter-

clockwise) one set of the terminal knobs. Strip about 1/2”

(12mm) of the insulation from the two wire conductors and

twist the wire strands into a tight bundle. Insert the wire

into the hole in the terminal shaft and turn the terminal

knob clockwise to clamp the wire in place. Be sure there

are no loose strands of wire that could touch the other

terminal.

Be sure the positive and negative speaker terminals of the

ampliﬁer are connected to the corresponding + (red) and

– (black) terminals of the speakers. All wire is marked in

some way to make it easy to trace the connections. The two

conductors will be color coded, or there will be a stripe or

ridge on the insulation, to identify them.

The terminals also accept wires with pin lugs or spade lugs

attached. Dual banana plugs can also be plugged into the

back of the terminals.

When connecting more than two speakers per ampliﬁer

channel, you should use series/parallel wiring. In all cases,

make certain that the total impedance does not fall below

the ampliﬁer’s rating. If you are not sure, contact your Snell

Acoustics dealer.

BI-WIRING

High performance audio systems

can beneﬁt from bi-wiring the

speakers. This involves connect-

ing two sets of wires between

the ampliﬁer and the speak-

ers. If you are bi-wiring your

speakers removed the terminal

straps by loosing the terminal

knobs and sliding the straps to

the side.

Use equal lengths of the ap-

propriate wire to bi-wiring the

speakers. Consult your dealer

for cable options. Connect the

wires between the ampliﬁer and

speakers as illustrated.

terminal

jumper

straps

amplifier

use equal

length wires

BI-AMPLIFYING

To achieve the highest level of performance, the speakers

can be bi-ampliﬁed. In this type of system two separate

ampliﬁers are used to drive the speakers. One ampliﬁer

drives the midrange/tweeter array, while a second drives the

bass speakers. As with bi-wiring, the jumper straps must be

removed from the connection terminals. Then connect the

speakers as show in the illustration

NOTE: Do not employ an external crossover of any sort,

whether passive or active. Doing so will interfere with the

phase and frequency response of the speakers. The inter-

nal crossover circuitry is an integral part of the speakers

and necessary to the proper response and function of its

D’Appolito array and overall performance.

NOTE: It is imperative that the ampliﬁers used to bi-amplify

the speakers are identical.

bass amplifier

use equal

length wires

tweeter/midrange amplifier

CONTROL SETTINGS

There are two switches on the connection terminal cup that enable you to make slight adjust-

ments to the response of the speakers. They can be used to help you get the best possible

performance from your speakers in a variety of installation situations.

The Boundary Switch

In some situations it may be necessary to install

the speakers where they may not produce the

best overall sound balance. One example is when,

in order get the best sound image, the speakers

must be installed close to a corner, or any large

object that forms a corner such as a ﬁreplace or

a large column. This can cause uneven response

in the upper bass and lower midrange which

produces sound that can be described as “thick”

or “heavy”. This is particularly noticeable in vocal

reproduction. The Boundary switch located above

the connection terminals can help control this.

If the speakers are located less than 12”-18” (30-45cm) from a corner or other large object,

try setting the switch to the Boundary position. Use source material that has a strong vocal

component to see if this setting produces smoother, more natural sound.

Tweeter Level Switch

The IC-B and IC-C series speakers have a three-position switch to adjust the output level of the

tweeter. In most rooms, the middle “0dB” position will produce the best sound. In rooms that

have plush carpeting and heavily upholstered furniture try the switch in the “+1dB” position. In

rooms that have more hard reﬂective surfaces, try the “-2dB” position.

+1dB

0 dB

-2 dB

Normal

Boundary

LISTENING LEVELS AND POWER HANDLING

The power recommendation for the system assumes you will operate the ampliﬁer in a way

that will not produce distortion. All speakers can be damaged by even a modest ampliﬁer if it is

producing distortion. If you hear a gritty noise or other signs of strain, turn down the volume.

Prolonged or repeated operation of your speakers with a distorted signal can cause damage

that is not covered by the warranty. It is especially important that you do not overdrive the

bass capability of smaller speakers. Watch for noises, such as pops, caused by the music’s bass

line. Use of the loudness control and/or full bass boost at louder volumes is likely to overdrive

the woofer. Use such controls sparingly.

HOW TO CARE FOR YOUR SPEAKERS

/ Use a soft terry cloth towel slightly dampened with water, glass cleaner, or a diluted mild

detergent. The towel should be just damp enough to wipe the surface clean without leaving

a trail of moisture.

/ Do not use abrasive cleaners or any cleaner containing chemicals harsher than those found

in glass cleaner.

LIMITED WARRANTY

For ﬁve years from the date of purchase, Snell Acoustics will repair for the original owner any

defect in materials or workmanship that occurs in normal use of the speaker system, without

charge for parts and labor.

Your responsibilities are to use the product according to the instructions supplied, to provide

safe and secure transportation to an authorized Snell 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 results from abuse, misuse, accidents, shipping,

repairs, or modiﬁcations by anyone other than an authorized Snell Acoustics service representa-

tive. This warranty is void if the serial number has been removed or defaced.

This warranty gives you speciﬁc legal rights, and you may also have other rights that vary from

state to state.

If Service Seems Necessary

Contact the dealer from whom you purchased the speaker system. If that is not possible, call us

at 607-352-2488,

or write to: Snell Acoustics

2 Chambers Street

Binghamton, NY 13903 USA

We will promptly advise you of what action to take. If it is necessary to return your speaker

system to the factory, please ship it prepaid in the original factory packaging. Please note that

Snell Acoustics will not be held liable for shipping damage due to improper packaging. After it

has been repaired, we will return it freight prepaid in the U.S. or Canada.

For EU Customers Only

This symbol found on the product indicates that the product must not be disposed

of with household waste. Instead, it may be placed in a separate collection facility

for electronic waste or returned to a retailer when purchasing similar product. The

producer paid to recycle this product. Doing this contributes to reuse and recycling,

minimizes adverse effects on the environment and human health and avoids any

ﬁnes for incorrect disposal.

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