Kramer Yarden 4-C SPK-C421-K User manual

KRAMER ELECTRONICS LTD.
USER MANUAL
MODEL:
Yarden 4-C (SPK-C421-K)
Closed-back Ceiling Speaker
P/N: 2900-300346 Rev 1

Yarden 4-C Contents
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Contents
1Introduction 1
2Getting Started 2
2.1 Achieving the Best Performance 2
2.2 Recycling Kramer Products 3
3Overview 4
4Your Yarden 4-C Closed-back Ceiling Speaker 5
5Installing the Yarden 4-C 7
5.1 Choosing the Best Location 7
5.2 Cutting the Ceiling Tile 7
5.3 Mounting the Yarden 4-C 8
5.4 Setting up an Array Installation 11
5.5 Painting the Speaker 14
6Technical Specifications 15
Figures
Figure 1: Yarden 4-C Closed-back Ceiling Speaker in a Boardroom Setup 4
Figure 2: Yarden 4-C Closed-back Ceiling Speaker 5
Figure 3: Closed-back Ceiling Speaker Schematic Diagram 6
Figure 4: Mounting the Yarden 4-C Closed-back Ceiling Speaker 9
Figure 5: Plugging and Securing the Cable 10
Figure 6: Tighten the Mounting Tabs 10
Figure 7: Adjust Tap Selector 11
Figure 8: Square Layout 12
Figure 9: Hexagonal Layout 12
Figure 10: Square Layout Parallel Wiring 13

Yarden 4-C Introduction
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1 Introduction
Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been
providing a world of unique, creative, and affordable solutions to the vast range of
problems that confront video, audio, presentation, and broadcasting professionals
on a daily basis. In recent years, we have redesigned and upgraded most of our
line, making the best even better!
Our 1,000-plus different models now appear in 11 groups that are clearly defined
by function: GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Routers;
GROUP 3: Control Systems; GROUP 4: Format/Standards Converters; GROUP 5:
Range Extenders and Repeaters; GROUP 6: Specialty AV Products; GROUP 7:
Scan Converters and Scalers; GROUP 8: Cables and Connectors; GROUP 9:
Room Connectivity; GROUP 10: Accessories and Rack Adapters and GROUP 11:
Sierra Products.
Congratulations on purchasing your Kramer Yarden 4-C Closed-back Ceiling
Speaker, which are ideal for the following typical applications:
Restaurants and cafes
Boutiques and shops
Boardrooms and meeting rooms
Classrooms and lecture venues
Yarden 4-C is designed for indoor dry locations and is suitable for
use in air handling spaces (plenum spaces).
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Yarden 4-C Getting Started
2 Getting Started
We recommend that you:
Unpack the equipment carefully and save the original box and packaging
materials for possible future shipment
Review the contents of this user manual
Go to http://www.kramerelectronics.com/support/product_downloads.asp
to check for up-to-date user manuals, application programs, and to check if
firmware upgrades are available (where appropriate).
2.1 Achieving the Best Performance
To achieve the best performance:
Use only good quality connection cables (we recommend Kramer high-
performance, high-resolution cables) to avoid interference, deterioration in
signal quality due to poor matching, and elevated noise levels (often
associated with low quality cables)
Do not secure the cables in tight bundles or roll the slack into tight coils
Avoid interference from neighboring electrical appliances that may adversely
influence signal quality
Position your Kramer Speakers away from moisture, excessive sunlight and
dust
This equipment is to be used only inside a building. It may only be
connected to other equipment that is installed inside a building.
Do not open the housing of the speaker; doing so may reduce the
quality of the sound.
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Yarden 4-C Getting Started
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2.2 Recycling Kramer Products
The Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC
aims to reduce the amount of WEEE sent for disposal to landfill or incineration by
requiring it to be collected and recycled. To comply with the WEEE Directive,
Kramer Electronics has made arrangements with the European Advanced
Recycling Network (EARN) and will cover any costs of treatment, recycling and
recovery of waste Kramer Electronics branded equipment on arrival at the EARN
facility. For details of Kramer’s recycling arrangements in your particular country
go to our recycling pages at http://www.kramerelectronics.com/support/recycling/.

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Yarden 4-C Overview
3 Overview
The Yarden 4-C Closed-back Ceiling Speaker consists of a pair of high
performance closed back speakers. Mount your Yarden 4-C speakers to the
ceiling in one of two ways: either directly onto the ceiling or, for added protection,
secure the speakers safely, using our ceiling mounting kit that is provided free
(see Section 5.3).
The Yarden 4-C speakers feature a multi-tap power transformer for selecting 8Ω
(bypassing the transformer) or 70V/100V power settings that are suitable for an
array installation.
Figure 1 shows an example of how the Yarden 4-C Closed-back Ceiling Speaker
can be installed in a boardroom setup:
Figure 1: Yarden 4-C Closed-back Ceiling Speaker in a Boardroom Setup

Yarden 4-C Your Yarden 4-C Closed-back Ceiling Speaker
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4 Your Yarden 4-C Closed-back Ceiling
Speaker
Figure 2 defines the Yarden 4-C.
Figure 2: Yarden 4-C Closed-back Ceiling Speaker
The following table defines the Closed-back Ceiling speaker hardware items (per
speaker pair) for each model in the series:
Description
A pair of
ceiling
speakers
(one shown)
Two grilles
(one shown)
Cutout
template
This table defines the ceiling mounting kit items:
Four
support
ring
screws
Two ceiling
support rings
(C-ring) –one
shown
Two pairs of
tile rails –
one of a pair
shown

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Yarden 4-C Your Yarden 4-C Closed-back Ceiling Speaker
Each Closed-back Ceiling speaker is supported by a C-ring and two tile rails. The tile
rails prevent the speakers from falling if the tile itself comes out or falls apart, as
their ends catch onto the T-grid. When mounting onto the ceiling tiles, use both
supports. When mounting onto a sheetrock ceiling, the C-ring alone is used to
reinforce the ceiling material.
Be sure that the tiles can support the speaker. Smaller sized tiles or
fiberglass-type tiles cannot support the weight of the speakers.
When this is the case, the speakers will need additional support.
Figure 3 shows a schematic diagram of the Closed-back ceiling speaker:
Figure 3: Closed-back Ceiling Speaker Schematic Diagram
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Yarden 4-C Installing the Yarden 4-C
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5 Installing the Yarden 4-C
This section explains how to install the Yarden 4-C closed-back ceiling speakers,
that is:
Choosing the best place to locate your speakers (see Section 5.1)
Cutting the ceiling tile (see Section 5.2)
Mounting the speakers (see Section 5.3)
Setting up an array installation (see Section 5.4)
Painting the speakers (see Section 5.5)
5.1 Choosing the Best Location
Ideally, locate the speakers above the main listening area. Before doing so, be
sure that:
The desired location is free of obstructions, such as electrical piping, AC
ducts or water lines, and so on
There is enough space behind the mounting surface for the speakers
The rear side of the speaker is not blocked by wall studs or other objects
5.2 Cutting the Ceiling Tile
To cut the ceiling tile, do the following:
1. Remove the circle in the supplied template.
Keep this template for later use as a mask, as you may want to paint the speakers (see
Section 5.5)
2. Mark the opening in the correct location by tracing the hole in the template.
3. Cut out the hole according to the template or with a circular cutter set to the
appropriate cutout size.
Initially, you can cut a smaller area inside the marked hole just to be sure that the
space above the speakers is clear

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Yarden 4-C Installing the Yarden 4-C
4. Route the wiring from the amplifier to the speakers’ cutout holes, taking care
not to place them next to electrical wires or at least at a distance of about
two feet from an AC line.
Do not nail or staple the speaker wires.
If you are mounting the speakers onto a ceiling tile, remove the ceiling tiles where
you plan to install the speakers. Use the template to trace and then cutout the
speaker hole over an empty box.
The closed-back ceiling speakers are supported by the ceiling mounting kit (two C-
rings and two pairs of tile rails; the tile rails prevent the speakers from falling if the
tile itself comes out or falls apart, as their ends catch onto the T-grid). When
mounting onto the ceiling tiles, use both supports.
Be sure that the tiles can support the speaker. Smaller sized tiles or
fiberglass-type tiles cannot support the weight of the speakers.
When this is the case, the speakers will need additional support.
When mounting onto a sheetrock ceiling, the C-ring alone is used to reinforce the
ceiling material.
5.3 Mounting the Yarden 4-C
To mount the closed-back ceiling speakers, do the following:
1. Place the C-ring over the hole cut in the ceiling tile (on the “ceiling” side).
Place it around the hole so that the tabs are located in parallel to the tile
edges.
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Yarden 4-C Installing the Yarden 4-C
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Figure 4: Mounting the Yarden 4-C Closed-back Ceiling Speaker
2. Place the tile rails on the tile and snap them into the two tabs on the C-ring.
Align the rails so that the ends extend over the T-channel grid.
3. Insert a screw through each tab on the C-ring to secure the rails.
4. Connect the speaker wires to the appropriate connector terminals:
PIN 1 and PIN 2 are connected internally and are positive (+)
PIN 3 and PIN 4 are connected internally and are negative (-)
Screw the hold-down screws on the connector until tight, using a small
screwdriver.
You can connect the speakers in the two following possible layouts:
Wiring in parallel: connect the amplifier directly to each of the
speakers. When one input connector is removed, subsequent
speakers will remain connected (see Figure 3)
Daisy-chaining: connect the wire pair (+ and -) of the speaker to the
subsequent speaker + and -. When one input connector is removed,
subsequent speakers will be disconnected (see Figure 3)
5. Plug the connector into the socket (see Figure 5).
6. Run the wires through the opening in the input terminal cover and then
connect to the speaker terminal block connector.
T-channel Grid
Support Ring
Screws Ceiling Tile
Tile Rails
C-ring

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Yarden 4-C Installing the Yarden 4-C
Figure 5: Plugging and Securing the Cable
7. Push the speaker into the ceiling hole until the front baffle rim is leveled with
the ceiling.
8. Tighten the mounting tabs by turning the screw counter clockwise (see
Figure 6).
Turning one quarter of a circle rotates the tab outwards; after that the screw is turned to
tighten the tabs to the rear side of the ceiling surface
When tightening the mounting tabs, the tabs automatically turn outward,
thus clamping the speaker to the wall from its rear side.
Do not over-tighten the screws. It may cause damage to both the
speakers and the surface.
Figure 6: Tighten the Mounting Tabs
9. If required, you can further secure the speaker by connecting the speaker
support ring to an independent secure anchor point.
10. Adjust each speaker to the appropriate tap setting before installing the grille
(see Figure 7).
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Yarden 4-C Installing the Yarden 4-C
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Figure 7: Adjust Tap Selector
11. Install the grilles to the speakers:
Push the grille fastener into the hole in front of the baffle
Press the grille into place until the front of the grille is flush with the rim
of the baffle
Check that the grille is securely seated
To remove the grille, insert two bent paper clips into the holes in the
grille and carefully pull it down. Repeat this around the perimeter of
the grille until it is completely removed.
5.4 Setting up an Array Installation
When installing Yarden 4-C in an array installation layout, you have to define the
distance between speakers as well as the layout pattern (square or hexagonal).
The distance between speakers is set according to the speakers’ dispersion
angle, the uniformity of the coverage desired and the budget.
The coverage angle of the speaker determines the coverage area and the number
of speakers required in the array installation. Two patterns are usually used for
array installations, square (see Figure 8) or hexagonal (see Figure 9), depending
on the shape of the installation area. The speakers are positioned according to
their coverage area.
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Yarden 4-C Installing the Yarden 4-C
Figure 8: Square Layout
Figure 9: Hexagonal Layout
You can set the power on each speaker to get the desired power level in different
installation areas.
Figure 10 shows an example of parallel wiring in a square array installation:

Yarden 4-C Installing the Yarden 4-C
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Figure 10: Square Layout Parallel Wiring

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Yarden 4-C Installing the Yarden 4-C
5.5 Painting the Speaker
You can paint the speakers before or after they are installed.
When painting before installation:
Clean the rim and grille with mineral spirits or other light solvent that is
unlikely to damage the surface
Spray with color by holding the spray can at an angle of 45
When spraying the grille, take care not to clog the holes in the grille
as this will greatly reduce the sound quality of the speakers.
When painting after installation:
Use the circle that you cut out of the template as a paint mask
After you finish painting, remove the paint mask
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Yarden 4-C Technical Specifications
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6 Technical Specifications
Yarden 4-C
Audio and Power
DESCRIPTION:
2−Way closed-back ceiling speakers
FREQUENCY RESPONSE:
85Hz to 20kHz @ -10dB
100Hz to 20kHz @ ±3dB
WOOFER:
4” (103mm) Kevlar(R) with rubber surround
TWEETER:
0.51” (13mm) Mylar
IMPEDANCE:
8Ω (transformer tap in off position)
TRANSFORMER TAPS:
70V –30W / 15W / 7.5W / 3.7W / Off (Lo-Z)
100V –30W / 15W / 7.5W / Off (Lo-Z)
SENSITIVITY:
85dB SPL, 1W@1m
MAX SPL:
Continuous: 95dB
Peak: 97dB
POWER HANDLING:
30W RMS
80W continuous program
CROSSOVER FREQUENCY:
6kHz
DIRECTIVITY FACTOR (Q):
4.2, averaged 1kHz to 10kHz
DIRECTIVITY INDEX (DI):
6.2dB averaged 1kHz to 10kHz
INPUT CONNECTOR:
Terminal block
Shipping and Installation
MATERIALS:
ABS bezel, aluminum grill, metal back can
OPERATING TEMPERATURE:
0° to +40°C (32° to 104°F)
STORAGE TEMPERATURE:
-40° to +70°C (-40° to 158°F)
HUMIDITY:
10% to 90%, RHL non-condensing
WEIGHT PER SINGLE SPEAKER:
1.75kg (3.9lbs) approx.
SHIPPING WEIGHT (FOR PAIR):
6.1kg (13.5lbs) approx.
DIMENSIONS:
External diameter: 19.5cm (7.68"); cutout diameter:
16.7cm (6.57")
INSTALLATION CLEARANCE:
Mounting depth: 10.7cm (4.2”)
ACCESSORIES:
Installation bracket, safety cord attached to grill,
ceiling mounting kit, cutout template
COLORS:
Available in white
Specifications are within a 10% tolerance and are subject to change without notice at
http://www.kramerelectronics.com

For the latest information on our products and a list of Kramer distributors,
visit our Web site where updates to this user manual may be found.
We welcome your questions, comments, and feedback.
Web site: www.kramerelectronics.com
E-mail: [e-mail]
P/N:
2900-300346
Rev:
1
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SAFETY WARNING
Disconnect the unit from the power
supply before opening and servicing