QSC SC-2150 Manuel utilisateur

TD-001624-01-A

*TD-001624-01*

SC-2150

Quick Start Guide

SC-2150 Screen Channel Loudspeaker System

TD-001624-01-A

EXPLANATION OF SYMBOLS

The term

“WARNING!”

indicates instructions regarding personal safety. If the instructions are not followed the result may be bodily injury or death.

The term

“CAUTION!”

indicates instructions regarding possible damage to physical equipment. If these instructions are not followed, it may result

in damage to the equipment that may not be covered under the warranty.

The term “IMPORTANT!” indicates instructions or information that are vital to the successful completion of theprocedure.

The term

"NOTE"

is used to indicate additional useful information.

The intent of the exclamation point within an equilateral triangle is to alert the user to the presence of important safety, and

operating and maintenance instructions in this manual.

IMPORTANT SAFETY INSTRUCTIONS_____

Refer to TD-000142 Safety Precautions contained in the shipping carton.

Warranty

For a copy of the QSC Limited Warranty, visit the QSC website at www.qsc.com

Introduction

The SC-2150 is a 3-way, selectable passive full-range or bi-ampliﬁed screen channel loudspeaker system comprised of two main units. These

units are shipped in separate cartons.

DCS-2150-HF Mid-High Frequency Loudspeaker System

Part Quantity

DCS-2150-HF Loudspeaker System 1

Wiring Harness *

TD-000142 Safety Precautions 1

TD-000453 Warranty 1

* Part of the HF Loudspeaker System

DCS-2150-LF Low-Frequency Enclosure

Part Quantity

DCS-2150-LF Loudspeaker Enclosure 1

Hex-head Screw 3

Flat Washer 3

Split Washer 3

TD-000142 Safety Precautions 1

TD-000453 Warranty 1

— Figure 1 —

DCS-2150-HF

DCS-2150-LF

TD-001624-01-A

Assemble the SC-2150

This procedure assumes that both items and associated hardware is unpacked and the two

units are placed on a solid ﬂat surface near the installation location.

Refer to — Figure 2

1. Place the HF horn assembly (1) on top of the LF enclosure (2) with the three holes in

the pan-and-tilt bracket (not visible in the illustration), aligned with the three holes (3)

in the top of the LF enclosure.

2. Assemble the three bolts (4a), split washers (4b), and ﬂat washers (4c) and install

through the pan-and-tilt bracket into the LF enclosure.

3. Tighten the bolts. Be careful not to over tighten.

Refer to — Figure 3

4. Connect the Neutrik SpeakON NL4 plug (1) (end of the wiring harness coming from the

HF System) to the LF Enclosure connector plate NL4 receptacle (2).

NOTE: The NL4 is a keyed plug/receptacle that can only go in one way.

5. After engaging the plug all the way, twist the plug clockwise until it locks.

6. Use the Mode switch (3) to select Bi Amp or Passive.

Passive Mode

– (— Figure 4) a single ampliﬁer channel drives the entire system. The

Mode Switch (3) must be in the PASSIVE position and only the right-side pair of terminals

are used to connect the ampliﬁer to the loudspeaker system.

Bi-Amp Mode

– (— Figure 5) two ampliﬁer channels are required. One for the LF

enclosure and one for the Mid-Hi system.

CAUTION!

An active crossover must be used to protect the loudspeaker from

damage. It is highly recommended to use a QSC processor with factory DSP

presets for the SC-2150 for best results.

The Mode Switch must be in the BI-AMP position and all four terminals are used to connect the ampliﬁer to the loudspeaker. The Low

Frequency ampliﬁer connects to the left pair of terminals and the High Frequency ampliﬁer connects to the right pair of terminals.

CAUTION!

In all cases, be sure to observe proper polarity when making connections. The “+” terminal of the ampliﬁer

should connect to the “+” terminal of the loudspeaker.

In Bi-Amp mode, be sure that LF and HF connections are not reversed. HF drivers can be damaged if they are connected

to the low frequency ampliﬁer.

— Figure 2 —

DCS-2150-HF

DCS-2150-LF

— Figure 3 —

To Mid-High System

— Figure 4 —

To amplier channel

— Figure 5 —

To amplier channel two (HF)

To amplier channel one (LF)

TD-001624-01-A

Mounting the SC-2150

CAUTION!

All QSC cinema loudspeakers must be installed by trained personnel familiar with mounting large, heavy

loudspeakers in a safe and secure manner.

The SC-2150 is not designed for safe suspension. No part of the LF cabinet or Mid-Hi component should be used to support

the weight of the system.

Mounting Platforms

The maximum room length for the SC-2150 is 55 ft (17 m). Use in larger rooms may result in driver failures. For best performance,

Bi-Amp mode should be used whenever possible and especially for rooms at the upper end of the size range.

1. Prepare three platforms, left, center, and right, sturdy enough to safely support the SC-2150, and with the capability of vertical

adjustments.

2. Place the loudspeakers platforms and adjust the height so that the Mid-Hi system is at approximately 5/8 of the screen height.

3. Position the SC-2150 so that the front of the loudspeaker is about 6” (15 cm) from the perforated cinema screen.

Aiming

Once the Left, Center and Right SC-2150’s are in place, the Mid-Hi system should

be aimed for best coverage of the audience. Aiming can involve moving the horns

horizontally (panning) and vertically (tilting). The patented QSC Cine-Sight simpliﬁes

aiming of the horns. The correct adjustment varies with the room size, shape and

seating slope. A point in the center of the room and about 2/3 of the way back from

the screen is usually a good starting place to aim the loudspeakers. You should check

front and rear rows for adequate high frequency coverage after the initial adjustment

and re-adjust the horns as needed to achieve the most uniform coverage.

Center Channel

The center channel is typically in the middle of the audience, so panning of the Mid-Hi

system is not usually required.

1. Make sure the Mid-Hi system is pointing straight ahead

2. Conﬁrm that the three Mid-Hi mounting bolts are securely tightened.

3. Remove the two tilt adjustment screws (one on each side of the bracket)

4. Look through the rear horn bracket aiming hole to line up the system with the

desired aiming point in the room.

NOTE: If the screen has not been installed, this is very easy. Once the screen has been installed, dim the lights in the room

and place a ﬂashlight at the aim point and you can see the light through the perforations of the screen.

5. Re-install the two tilt adjustment screws in the correct hole when the desired tilt adjustment has been obtained.

Left and Right Channels

Aiming of the Left and Right channels is similar to the Center, but it is often necessary to pan (toe in) the horns toward the middle of the

room.

1. Loosen the three mounting screws to allow the Mid-Hi system to rotate and tilt.

2. Aim the system with the Cine-Sight.

TIP: If extreme panning is required, “toe in” the LF enclosures a few degrees so the horn is not panned to extreme angles

of adjustment.

3. Tighten the three mounting screws and re-install the two tilt adjustment screws in the correct adjustment hole.

4. When all adjustments are complete make sure all screws and connections are securely tightened and the Mode switch is in the

correct position.

— Figure 6 —

Cine-Sight

Tilt Adjustment

TD-001624-01-A

Speciﬁcations SC-2150

Nominal Coverage (-6 dB) 90° horizontal x 40° vertical

Frequency Response 1(-6 dB) 38 Hz – 20 kHz

Frequency Range 1(-10 dB) 32 Hz – 20 kHz

Crossover Frequencies (passive) 500 Hz & 2200 Hz

Crossover Frequencies (bi-amp) 500 Hz active, 24 dB /octave LF to mid-

high, 2200 Hz passive

Impedance (passive mode) 4Ω

Maximum Input Power 2(passive mode) 500 W RMS

Sensitivity (1 watt / 1 meter, passive mode) 99 dB SPL

Calculated Maximum Output 3

(passive mode)

126 dB continuous, 132 dB peak SPL at 1 m

2150-LF 2150-HF

Impedance 4Ω 8Ω

Sensitivity (1 watt / 1 meter, half space) 100 dB 102 dB

Maximum Input Power 500 W RMS 480 W RMS 5

Maximum Recommended Ampliﬁer Power 1000 W RMS 320 W RMS

Recommended Processing Subsonic ﬁlter below 30 Hz,

>18 dB per octave

4th order LR crossover at 500 Hz via QSC

processor

Connectors Barrier strip screw terminals accept up to

#10 AWG stranded wire

Factory installed NL4 plug for connection

to input terminal plate

Transducers Two 15" (381 mm) high efﬁciency,

extended bass woofers featuring 3" voice

coils

6.5" high efﬁciency mid range, 1" (38

mm) exit, 1.4" (35.5 mm) diaphragm

compression driver

Enclosure Ported enclosure with symmetrical port

design, tuned to 40 Hz, constructed of MDF

and heavily braced

Tilt/Pan Bracket

-20 to +10° vertical tilt

± 15° horizontal pan

Dimensions (HWD) 38.3" x 30" x 14.5"

(972 mm x 762 mm x 368 mm)

17.3" x 16.3" x 6.8"

(440 mm x 414 mm x 173 mm)

Weight – Net 107 lb / 48.5 kg 10 lb / 4.5 kg

Weight – Shipping 121 lb / 54.9 kg 12 lb / 5.4 kg

System Weight – Net 117 lb / 53.1 kg

System Weight – Shipping 133 lb / 60.3 kg

Bafﬂe Wall Cut-Out 30.5" x 56.1" (775 mm x 1425 mm) contoured to the perimeter of MF - HF horns

1. Half-space with recommended QSC processing

2. IEC 60268-5, 2 hrs, Power = Vrms 2/Znom

3. Calculated SPL at 1 m, full-space, speaker operating at rated continuous power handling, 6 dB crest factor

4. AES2-1984, 40 Hz – 400 Hz, 2 hrs, Power = Vrms 2/Znom

5. Pink noise, 500 Hz – 20 kHz, 6 dB crest factor, 2 hrs, Power = Vrms 2/Znom

TD-001624-01-A

SC-2150 Dimensions

14.5”

368 mm

6.8”

173 mm

16.3”

414 mm

30”

762 mm

17.3”

440 mm

55.6”

1,412 mm

38.3”

972 mm

Trademark ofﬁce and other countries. All other trademarks are the property of their respective owners.

http://patents.qsc.com.

Mailing Address:

QSC, LLC

1675 MacArthur Boulevard

Costa Mesa, CA 92626-1468 U.S.

Main Number: +1.714.754.6175

World Wide Web: www.qsc.com

Sales & Marketing:

Voice: +1.714.957.7100 or toll free

(U.S. only) +1.800.854.4079

FAX: +1.714.754.6174

Email: info@qsc.com

QSC

Technical Services

1675 MacArthur Blvd.

Costa Mesa, CA 92626 U.S.

Tel: +1.800.772.2834 (U.S. only)

Tel: +1.714.957.7150

FAX: +1.714.754.6173

QSC Self Help Portal

Access our Self-Help Portal for additional information,

FAQs and documents. You may also register or login to

open a case with QSC Technical Services.

https://qscprod.force.com/selfhelpportal/s/

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