AD-CI52T - In-wall speaker QSC AUDIO - Free user manual and instructions

Product type	In-ceiling speaker
Brand	QSC AUDIO
Model	AD-CI52T
Woofer (LF)	13.3 cm (5.25 in)
Tweeter (HF)	2.5 cm (1 in) dome
Transformer	Suitable for 70 V and 100 V distributed systems, with multi-tap switch and bypass for 8 ohms
Maximum rated power (connectors)	400 W
Installation type	Suspended and non-suspended ceilings
Included accessories	Grille, suspended ceiling supports, C-bracket, self-tapping screws, grille clip, two terminal block connectors
Warranty	3 years limited (factory or authorized center)
Maintenance	Clean with a dry cloth only
Safety	Use the secondary support lug and the grille safety cable
Repairability	Refer repairs to qualified personnel
Mounting hardware	Use only hardware specified by QSC
Connectors	Terminal block, two connectors supplied (signal and loop-through)
Impedance selector	Positions for 8 ohms, 70 V and 100 V (4 positions for 70 V)
Compatibility	70 V, 100 V and 8 ohm systems
Application	Ceiling installation for audio distribution
Important instructions	Read, keep, heed warnings and follow instructions

Frequently Asked Questions - AD-CI52T QSC AUDIO

How to install the AD-CI52T speaker in a suspended ceiling?

Use the two suspended ceiling supports provided with the C-bracket. Cut a hole to the dimensions, insert the supports, then the C-bracket. Secure the C-bracket to the supports using the self-tapping screws. Then, connect the wires and insert the speaker into the hole. Tighten the mounting screws to lock the speaker.

How to connect the speaker to a 70 V or 100 V system?

Use the multi-tap switch located on the transformer. For a 70 V system, you can use all four power positions. For 100 V, do not use the maximum setting. For 8 ohms, set the switch to the '8 ohms' position (transformer bypass). Connect the wires to the terminal block connector observing polarity.

How to remove the speaker grille?

Gently lift the outer edge of the grille or insert a small metal pin into an opening of the grille and pull evenly around its entire perimeter. Be careful not to damage the grille.

What safety cable to use for the secondary support?

Use a metal cable or wire strong enough to support several times the weight of the speaker. Do not use rope, string, or textile material. Attach it between the attachment lug on the enclosure and an appropriate structural point.

What to do if the grille vibrates or whistles during operation?

Apply a vibration damping material between the support rails and the ceiling tiles or T-bars to reduce unwanted noise.

What is the recommended cleaning procedure?

Clean the speaker only with a dry cloth. Do not use liquid or abrasive products.

Can the speaker be used in a non-suspended ceiling?

Yes, you can install it in a non-suspended ceiling. The C-bracket can serve as reinforcement. If the ceiling is sturdy enough, the speaker can be fixed in the cutout without additional support. The suspended ceiling supports are not needed in this case.

How does the 3-year warranty work?

QSC warrants its products against manufacturing defects for 3 years from the date of sale. To obtain warranty service, return the device prepaid to the factory or an authorized repair center with proof of purchase. The warranty does not cover damage due to misuse, neglect, or incorrect installation.

What accessories are included in the box?

The box contains: the speaker, grille, two suspended ceiling supports, one C-bracket, self-tapping screws (M4.2 x 1.4 x 10 mm), one grille clip, and two terminal block connectors.

How to set the switch for 8 ohm operation?

Set the switch to the position marked '8 ohms' or 'bypass' on the transformer. This disables the transformer and the speaker operates at low impedance (8 ohms). Ensure the amplifier is compatible with this load.

USER MANUAL AD-CI52T QSC AUDIO

IMPORTANT SAFETY PRECAUTIONS

& EXPLANATION OF SYMBOLS

1- Read these instructions.
2- Keep these instructions.
3-Heed all warnings.
4- Follow all instructions.
5- Clean only with a dry cloth.
6- Install in accordance with QSC Audio Product's instructions and a licensed, professional engineer.
7- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
8- Only use attachments/accessories from QSC Audio Products, Inc.
9- Use only with mounts or brackets specified by QSC Audio Products.
10- Refer all servicing to qualified personnel. Servicing is required when the apparatus has been damaged in any way.

The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous" voltage within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in this manual.

WARNING! Before placing, installing, rigging, or suspending any speaker product, inspect all hardware, suspension, cabinets, transducers, brackets and associated equipment for damage. Any missing, corroded, deformed or non-load rated component could significantly reduce the strength of the installation, placement, or array. Any such condition severely reduces the safety of the installation and should be immediately corrected. Use only hardware which is rated for the loading conditions of the installation and any possible short-term unexpected overloading. Never exceed the rating of the hardware or equipment. Consult a licensed, professional engineer when any doubt or questions arise regarding a physical equipment installation.

Warranty (USA only; other countries, see your dealer or distributor)

Disclaimer

QSC Audio Products, Inc. is not liable for any damage to amplifiers, or any other equipment that is caused by negligence or improper installation and/or use of this loudspeaker product.

QSC Audio Products 3 Year Limited Warranty

QSC Audio Products, Inc. ("QSC") guarantees its products to be free from defective material and / or workmanship for a period of three (3) years from date of sale, and will replace defective parts and repair malfunctioning products under this warranty when the defect occurs under normal installation and use - provided the unit is returned to our factory or one of our authorized service stations via prepaid transportation with a copy of proof of purchase (i.e., sales receipt). This warranty provides that the examination of the return product must indicate, in our judgment, a manufacturing defect. This warranty does not extend to any product which has been subjected to misuse, neglect, accident, improper installation, or where the date code has been removed or defaced. QSC shall not be liable for incidental and/or consequential damages. This warranty gives you specific legal rights. This limited warranty is freely transferable during the term of the warranty period.

Customer may have additional rights, which vary from state to state.

In the event that this product was manufactured for export and sale outside of the United States or its territories, then this limited warranty shall not apply. Removal of the serial number on this product, or purchase of this product from an unauthorized dealer, will void this limited warranty.

Periodically, this warranty is updated. To obtain the most recent version of QSC's warranty statement, please visit www.qscaudio.com.

Contact us at 800-854-4079 or visit our web site at www.qscaudio.com.

Copyright 2005, QSC Audio Products, Inc.

QSC® is a registered trademark of QSC Audio Products, Inc.

"QSC" and the QSC logo are registered with the U.S. Patent and Trademark Office

All trademarks are the property of their respective owners.

Introduction

Congratulations and thank you for your ceiling loudspeaker purchase. The AD-CI52T and AD-CI52ST models offer excellent acoustic performance in an easy-to-install and attractive package. Please review these instructions carefully and follow the recommendations. Consult a licensed installation professional if you are uncertain about any mounting issues.

Both models feature a 5.25" (133mm) low-frequency (LF) driver and a 1"(25mm) dome high-frequency (HF) driver. The AD-CI52ST features a shallow enclosure which is larger in diameter and ported. All models are equipped with an audio transformer suitable for 70V and 100V distributed systems, as well as a tap-selector switch which can bypass the transformer for 8 ohm applications.

What's Included

Your ceiling loudspeaker box contains:

• the loudspeaker cabinet
• the protective grill assembly
• two support brackets for suspended ceiling installations
• C-ring bracket for suspended ceilings and other ceiling reinforcing applications
• Self-tapping screws(M4.2 X 1.4 X 10mm) for securing the C-ring-to-support brackets
• grill clip used for clipping the plastic grill retaining lines together
• two terminal block connectors for connecting signal and daisy-chaining

Installation Options

The AcousticDesign in-ceiling loudspeakers can be mounted in suspended ceilings, as well as non-suspended types. We recommend an installation professional be consulted for safety assurance, quality installation, and optimum acoustic performance.

For suspended ceiling applications, the suspended ceiling support brackets must be used with the C-ring bracket. The suspended ceiling support brackets are designed to accommodate 24" or 600 mm t-channel grid spacing. The brackets do not attach to the t-channel; the angled "V" bend sits over the t-channel and will catch the t-channel in the event of a tile failure or fall-out.

For other ceiling types, the C-ring bracket can be used to reinforce the mounting surface. If the ceiling is suitably strong, the loud-speaker can be secured in the cutout hole without additional reinforcement.

Audio connections are made using terminal block type connectors. Two sets of terminals are provided; one set for the signal connection and another for pass-through (or daisy chain) connection to other loudspeakers on the same distribution circuit.

Two safety features are provided, an enclosure-retaining safety tab and a grill-retaining safety tether. The enclosure tab is a metal tab on top of the enclosure suitable for securing the loudspeaker to building framing; this provides maximum safety in the event the ceiling structure fails for any reason. The grill's safety tether prevents the grill from falling in the event it should vibrate loose.

Hardware Nomenclature

Suspended ceiling viewed from above.
(hardware may not be required for all installations)

Grill Safety Clip

The cabinet and the grill both have a small loop of plastic line. The grill's loop has a clip attached. Using the grill clip, attach the grill to the cabinet's loop. This will help prevent the grill from falling should it become detached.

Connections

Connect signal wires to terminal block connector, note polarity. Connect next loudspeaker to remaining connector. Connectors are wired in parallel, internal connection is rated for 400W max.

Use the Secondary Support Tab!

Loudspeakers can potentially generate substantial vibration. In addition to ensuring all hardware is properly installed and secured, you must use the secondary support tab on the enclosure to secure the loudspeaker to an appropriate structural support. This will minimize the chance of the loudspeaker falling from the ceiling in the event the primary mount fails. Any cable or wire used as a secondary support line must be strong enough to support several times the weight of the loudspeaker. Do not use rope, string, twine or other textile-based line in the secondary support system as it is easily cut or burned. The secondary support attachment point and any fasteners used on the building's structure must also be strong enough to support several times the weight of the loudspeaker.

Mounting Clamps

The mounting clamps are part of the assembly for simple use. Do not install the grill until clamps have been tightened and any adjustments made.

Before inserting the cabinet into the mounting cutout, make sure the clamps are folded in against the cabinet, see 1, right.

After the cabinet is installed into the mounting cutout, tighten each clamp's screw using a #2 Phillips screwdriver, see 2, right.

The clamp rotates 90^ and is then pulled tight by the screw, see 3, right.

Other Recommendations and Important Information

• Grill removal: The grill can be removed by carefully prying around its outer edge or inserting a small, metal pin or hook into the grill's openings and pulling evenly around its perimeter.
• If rattles or buzzing is heard during operation, it may be necessary to put vibration dampening material between the support rails and the ceiling tiles and/or t-channels.
• The support rails have holes along their usable length to attach the C-ring bracket. This allows for the cutout to be placed in many positions along the ceiling tile width.

Installation Procedure

1- Using the included C-ring or the dimensions provided, trace a cutout pattern onto the ceiling surface.
2- Cut the mounting hole. Use a sharp tool to avoid stressing or cracking the mounting surface.
3- Pull the wires through the hole.
4- Pass the two suspended ceiling support brackets through the hole and place as shown in the illustration. Make sure the part of the bracket that is flat against the tile is toward the hole. If installing in a non-suspended ceiling application, these brackets are not required.
5- Pass the C-ring bracket through the hole. Slide the cutout slot into the hole first, and then rotate the bracket so it passes through the hole. Be sure the wires pass through the ring.
6- Position the support brackets, and secure the C-ring bracket to each of the support brackets using the screws provided. If installing in a non-suspended ceiling application, skip this step.
7- Loosen the connection cover plate retaining screw and swing the cover open. Install an appropriate non-metallic sheathed cable connector into the hole provided on the cover plate.
8- Temporarily support the enclosure so the wires may be passed through the enclosure top with enough slack to prepare and terminate the wires.
9- Locate the terminal block connectors included with the loudspeaker. Loosen the wire retaining screws fully.
10- Strip the wire ends approximately 5mm (0.2^ ) and insert each wire into its proper connector position. Tighten the wire retaining screws fully.
11- Rotate the connection cover plate closed, making sure not to stress the connections or pinch the wires. Tighten the cover plate's retaining screw.
12- Adjust the wiring at the entry point, if necessary, and tighten the clamping screw(s) on the non-metallic sheathed cable connector. This prevents wire stress and strain from pulling the connections/ connectors loose.
13- Attach a safety cable (secondary support cable) from the enclosure's attachment tab to an appropriate support point. This cable and the attachment points must be strong enough to support many times the weight of the loudspeaker in the event the primary mounting system fails.
14- Insert the enclosure into the ceiling cutout, making sure any brackets used remain properly positioned. Tighten the loudspeaker's mounting clamp screws.
15- Set the tap selector switch to the desired position. 70V systems, all four positions may be used. Do not use highest tap setting with 100V systems. 8 ohm systems, se selector to 8 ohm position.
16- Make sure all tests and adjustments are complete before installing the grills. Locate the loudspeaker's grill. The cabinet and the grill both have a small loop of plastic line. Using the clip on the grill's line, attach the grill's safety loop to the cabinet's loop. Carefully work the grill into its retaining slot and press firmly into place. Work the grill in slowly and evenly to avoid damage. Make sure all tests and adjustments are complete before installing the grills.

Specifications
	AD-C152T	AD-C152ST
Frequency Response1:	85- 20k Hz (-6 dB), 65- 20k Hz (-10 dB)	63- 20k Hz (-6 dB), 53- 20k Hz (-10 dB)
Maximum Output2:	102 dB SPL continuous rms output	103.5 dB SPL continuous rms output
(calculated)	108 dB SPL peak output	109.5 dB SPL peak output
Transducers:	LF: 133 mm (5.25", 25 mm (1") voice coil; weatherproof, low-distortion fiberglass cone. HF: 25mm (1") titanium dome, neodymium magnet.	LF: 133 mm (5.25", 25mm (1") voice coil; weatherproof, low-distortion fiberglass cone. HF: 25mm (1") titanium dome, neodymium magnet.
Nominal Coverage:	90° conical (average 1 kHz - 4 kHz)	100° conical (average 1 kHz - 4 kHz)
Impedance (ohms):	8.0 nom./ 6.4 min. @ 15 kHz.	8.0 nom./ 6.0 min. @ 13 kHz.
Power Rating3:
rms (IEC 100 hrs):	40 watts rms (30 watts, AD-C52T)	40 watts rms (30 watts, AD-C52ST)
recommended amp power:	80 watts rms, maximum	80 watts rms, maximum
Sensitivity:	86.0 dB, 1 watt, 1 meter, flush mounted (2 pi)	87.5 dB, 1 watt, 1 meter, flush mounted (2 pi)
Bass Loading:	sealed	ported, tuned to 75 Hz.
Optional Processing:	65 to 125 Hz. high pass >12 dB/octave	55 to 125 Hz. high pass >12 dB/octave
Dimensions:	see drawings	see drawings
Net Weight:	AD-C152T: 3.4 kg (7.5 lb.)	AD-C152ST: 3.9 kg (8.5 lb.)
Enclosure:	Corrosion-resistant plated steel enclosure with injection-molded plastic baffle. Press on metal grill.
Mounting System:	Captive, integral mounting clamps. Insert enclosure into cutout, and tighten. Suspended ceiling C-ring and support bars included.
Connectors:	Terminal block connector inputs and terminal block "through" connectors (rated for 400W max).
Controls:	Transformer "tap" selector/ bypass (8 ohm) switch, settings: 3.75, 7.5, 15, and 30 watts (7.5, 15, 30 watts for 100V) and 8 ohms. 70/100V Insertion loss: 0.8 dB, Averaged over 50Hz - 20kHz bandwidth (30W tap). Transformer Distortion: less than .01% THD above 100Hz, 0.2% @ 50Hz (30W tap). Bandwidth: 40 - 20k Hz (-1dB, all taps).
Agency Listings:	CE, UL 1480 (commercial/professional use, outdoor damp), UL 2043 (air handling spaces).

Specification Notes:

1- All frequency ranges specified refer to measured half-space response (2 pi).
2-Calculated maximum peak SPL at 1 m, half-space, speaker operating at rated rms power pink noise input, 50Hz to 20kHz
3- Maximum input power tested in accordance with IEC recommendations; 50 Hz to 20 kHz band limiting, 6 dB signal crest factor.

AD-CI52ST Dimensions

HOLE CUTOUT DIAMETER = 297 mm (11.70") USE C-RING FOR TEMPLATE

MATERIAL THICKNESS RANGE FOR CLAMP MOUNTING = 5.6 - 19.0 mm (0.22" - 0.75")

QSC Audio Products, Inc.

1675 MacArthur Boulevard

Costa Mesa, CA 92626-1468 USA

Telephone Numbers:

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