Ocean Way Audio HR4 Instruction Manual

Manual of Operations
Ocean Way Audio HR4 (2-Way) and HR4S (3-Way)
Sound System

Contents
1) HR4 Description
2) Safety Instructions and Warnings! (please read carefully)
3) Inputs and Controls
4) Input selectors & Legends
5) HR4S & S12A / Physical Setup
6) Signal Flow 2-Way & 3-Way
7) S12A Description
8) Specifications
9) Warranty
10) Maintenance

1) High Resolution HR4
The Ocean WayAudio HR4/HR4S Reference Monitor is an accurate, wide-dynamic-range, sound-delivery system for the
professional listening environment. It is 25.5” wide and features an integrated 2-way dual-horn, directivity-control loudspeaker
that can be placed as a pair in any environment to provide an exceptionally-accurate and revealing stereo monitoring
experience.
At the heart of the acoustic design is HR4’s dual/hybrid waveguide system. Its unique design was engineered utilizing 3D
modeling and then CNC machined from composite materials. This accurate process allows for the creation of geometrically-
complex surfaces that are accurately-matched for delivering detailed imaging.As a result, the HR4 delivers a stunning 100 x
40 degree dispersion pattern over a very wide audio range. An exceptionally wide “sweet-spot” is revealed with rich detail
across a broad area of the listening spectrum. The consistency of its stereo image, even at the far corners of the room, is
achieved due to the highly consistent directivity response of the speaker system. This is often a delightful surprise to the
listener in light of what is available today.
The HF driver is a high-definition silk fabric dome design with excellent mechanical linearity. The LF driver is a geometrically
reinforced aluminum cone with a vented cast-aluminum chassis yielding optimum strength and high-power linearity. Combined
with a rock-solid wood/composite cabinet, the system is voiced to provide an undetectable crossover transition between the
drivers. Our two-way, self-powered design delivers an unprecedented level of performance allowing for flexibility of placement
in the room with a matched uniform frequency response of 35 Hz to 25 kHz.
For those who wish to achieve even greater SPL, we offer a 3-Way version with dual 12” sub-bass cabinets –entitled HR4S.
HR4S delivers 25 Hz to 25kHz @ 118 db.
We carefully select and match each set of components getting them as close as possible to achieve our high performance
standards. Our process could easily be compared to building a fine musical instrument.

Read the information for use
Please keep this user manual in a safe place during the lifetime of the product.
Heed all warnings.
Follow all instructions.
Do not use this product near water (for example, in damp rooms or near a swimming pool).
Clean only with dry cloth.
Do not cover the heat sink. Install in accordance with the user manual.
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that
produce heat.
Protect the power cord from being walked on, pinched or damaged in any other way. Pay particular
attention to plugs and the point where they exit from the Amplifier Unit.
TheAmplifier Unit can only be disconnected from the power supply by removing the plug, which must
be freely accessible at all times. Unplug this Amplifier Unit during lightning storms or when unused for
long periods of time.
Refer all servicing to qualified service personnel.
2) Safety Instructions and Warnings

Servicing
Do not attempt to service this product yourself. As opening or removing covers may expose you to
dangerous voltage or other hazards, the amplifier may only be opened by qualified personnel. Please
refer to your dealer/distributor.
Servicing and Replacement Parts
All service and repair work must be carried out by an authorized dealer/distributor. When replacement parts
are required, please ensure that the dealer/distributor only uses replacement parts specified by the
manufacturer. The use of unauthorized replacement parts may result in injury and/or damage through fire
or electric shock or other electricity -related hazards.
Ventilation and heat sink
The heat sink is provided to ensure reliable operation of theAmplifier Unit and to protect it from
overheating. The heat sink must not be blocked or covered. This product should not be installed unless
proper ventilation is provided or manufacturer’s instructions have been adhered to.
Water and Moisture
Do not use this product near water (for example, in damp rooms or near a swimming pool).
Cleaning
Unplug theAmplifier Unit from the wall outlet before cleaning. Do not use liquid or aerosol cleaners.

Power -Cord Protection
Power supply cords should be routed so that they are not likely to be walked on or pinched by items
placed upon them or against them, paying particular attention to cords and plugs, and the point where
they exit from the Amplifier Unit.
Lightning
For added protection of the product during lightning storms, or when it is left unattended and unused for
long periods of time, unplug it from the wall outlet. This will prevent damage to the product due to
lightning and power-line surges. Disconnection from the mains power supply can only be achieved by
removing the plug from the mains socket and by external disconnection of all poles from the mains.
Accessories
Do not place this product on an unstable cart, stand, tripod, bracket, or table. The product may fall,
causing serious injury, and serious damage to the product.

Connecting
When you connect this speaker to other equipment, turn off the power and unplug all of the equipment
from the supply source. Failure to do so may cause an electric shock and serious personal injury. Read
the user's manual of the other equipment carefully and follow the instructions when making the
connections.
Sound Volume
Reduce the system volume to minimum before you turn on the amplifier to prevent sudden high levels
of sound which may cause hearing or speaker damage.
Precautions when connecting to MAINS IN
When mounting or connecting the product always disconnect it from mains. Only connect the product to
an appropriateAC circuit and outlet, according to the requirements indicated on the rating plate. If a
power cut occurs while the amplifier is switched on, it will restart automatically once the power supply
has been restored.All settings prior to the loss of power will be maintained. IMPORTANT: Always
connect the Product to mains through the MAINS IN connector on theAmplifier Unit.

DO NOT REMOVE MAINS CONNECTOR GROUND, IT IS ILLEGAL
AND DANGEROUS.
AC power 115/230v switch
Make sure to correctly configure with the correct voltage for your country.

3) Inputs and Controls HR4
Master Volume
The Master Volume allows trimming the speaker input gain when desired.

HR4
LED 1 –when illuminated indicates preset selected requires an analog signal
LED2 –when illuminated indicates preset selected requires an AES-EBU digital signal
LEDS 3 & 4 - will be illuminated or dark in combinations specified in the legend above
To indicate which of the 4 presets is currently active.
Preset 1 –default preset the speaker is shipped with. It is an analog input 2-way (full range)
configuration. Use Analog In XLR. (LED 1 on, LED 3 & 4 off).
Preset 2- Is an analog 3-way (85Hz 4th order L-R high pass filter) for use with a sub-woofer.
Use Analog In XLR (LED 1 on, LED 3 off / LED 4 on).
Preset 3 –Is an AES-EBU digital left input with 2-way response. Use Digital In XLR (LED 2 on, LED 3 on / LED 4 off).
Preset 4 –Is an AES-EBU digital right input with 2-way response. Use Digital In XLR
4) Input Selection and Legends

Using a small diameter blunt tool (i.e. plain end of a cotton swab), depress the LED Selector
pushbutton for a short (1/2 second or less) duration. Each press will toggle the LEDS into different
flashing sequences that will match the legend above. When the desired sequence is flashing,
depress the switch for a full second. This will load that program and the LEDs will change from
flashing to full illumination.
N.B. A long push (1 sec or more) without first being preceded by a short push will toggle the
input from its alternate state (analog to digital or visa-versa).You’ll see LED 1 or LED 2 change
to their opposite state to indicate this. Avoid doing this unintentionally. Begin with short
pushes to toggle through the 4 preset options and use the long push to select the desired
preset.
Selecting Presets

5) HR4S & S12A / Physical Setup
HR4 & S12A Sub-Bass Combine
forming HR4S
(Stand not included or required)

Some consoles will not afford a safe support the HR4, and we generally recommend using the SoundAnchorADJ2 for
this. The HR4 is easily positioned on the ADJ2 platform and can be rotated safely as its center of gravity falls well within
the platform’s generous footprint. In most cases, the stand’s base will probably need to be positioned parallel to the
console’s “legs” and the HR4 rotated to best horizontal aim. More on this follows.

Achieving wideband stereo sound is deceptively simple; you must be able to hear the full range of two speakers. The HR4
represents a breakthrough in modern stereo studio monitor technology. It employs advanced, full-spectrum directivity-
control as compared to the typical compact direct-radiator monitor which exhibits narrow HF “beaming”. While most
compact monitors establish a “sweet spot” between them, the HR4 establishes a wide-area Stereo-Zone™ in a wide area.
The HR4 can easily be aimed to establish a truly accurate Stereo-Zone™ for multi-person listening. For example, we have
plotted, below, the 100 degree horizontal pattern of the HR4 in an overhead plan-view with a typical console. Speaker
centers are about 72” apart. You can see where the individual HR4 sound-fields overlap; this defines a wide area where you
can hear full-band stereophonic sound. In this case, we chose an inward aiming of 20 degrees. If the pair were aimed more
inward, the stereo-zone narrows. Aiming more outward, the Stereo-Zone™ widens but the result is more sound impacting
the sides of the studio environment, changing the overall sound of the space. It is up to the HR4 owner or studio designer to
choose what works best. Often this is a matter of listening and achieving the most acceptable aesthetic sound (always our
first recommendation). A 20 degree inward aiming angle is a good place to start, nice wide field at the console and also for
anyone behind or off to the sides (two or three persons can work at once on a mix and hear the full stereo sound): Below is a
graphical depiction showing (below right) the location of the stereo zone in yellow, which is simply the mutual overlap zone
of the two HR4’s.

The HF horizontal pattern of the HR4 (S) is largely controlled by the HF horn walls. There is a very easy on-
site test for aiming: If you can see the little “dot” or circle at the entrance to both HF horns, you will be in the
stereo-zone. You can set up your HR4’s this way by just visual inspection. Below is a depiction of a location at
the fringe of the stereo zone:

HR4 & HR4S are perfect for any teaching environment. Its 100 degree dispersion pattern allows everyone to hear
the full stereo mix in great detail. Below, an almost zero-aiming-angle achieves a wide Stereo-Zone for a classroom.

6) Signal Flow 2-Way & 3-Way
The HR4 is configured as a 2-way system with no programmed roll-off in the low end response. There is a
factory preset installed that will allow the speaker’s low frequency response to be extended by adding a sub-
bass cabinet. Ocean Way Audio offers the S12Asubwoofer which has been matched to create a balanced
system response.
Select Preset 2 - (LED 1 on, LED 3 off / LED 4 on).

7) Inputs and Controls S12A
The Power Switch (toggle) has three positions.
1.) In the left most position the unit is powered OFF.
2.) In the center position the unit is in Auto mode. It can
be powered on uniting the 12V trigger inputs or
by feeding audio into the input XLR. In the absence of
either it will enter STANDBY mode with the red LED
illuminating.
When the trigger is activated or audio is supplied it will
power up and the green LED will illuminate.
3.) The right most position is will power up to ON with the
green LED illuminating. It will remain ON in this position.
The Voltage auto selects between 100v and 240v-
115W 50/60HZ

Inputs and Controls S12A
GAIN is the volume control. A suggested starting position is 12 o’clock when matched
with HR5 speakers. Adjust up
or down to suit positioning in your room. (Closer to a wall or a corner on the floor will
increase the low frequency response.
LF Adjust incorporated a LF shelf @ 45 Hz +/- 5 db in 1 db increments
Crossover switch selects frequencies from 60 / 65 / 70 / 75 / 80 /85 / 90 /95 / 100 / 110 /
120hz
Delay adjusts from 0 to 20 ms.
12V trigger (AC or DC) will turn the unit on and off when power switch is in center (Auto)
position. The jacks are paralleled to daisy chain to other auto powered products. With
switch in center position and no trigger utilized, the unit will power ON when audio is
sent to the input XLRs.
Balanced XLR IN & OUT jacks are paralleled and a direct feed through. Signal does not go
through any electronics.

8) Specifications
Tech Specs HR4
Powered YES. Accepts analog/digital inputs 24 bit / 192 kHz
Driver Configuration 2-way, compression-driven horns/waveguides
3-Way version available Yes
HF Driver Size / Amp 1" / 125watts
LF Driver Size / Amp 8" / 125watts
AES3 Digital Inputs Yes
Horizontal / Vertical directivity control 100 / 40 degrees
Frequency Range 2-way 35Hz > 25kHz
Maximum Peak SPL 2-way 116 db
Enclosure Type Sealed
Dimentions H 14" x W 25.5" x D 14" / 57lbs
Tech Specs HR4S
HR4S 3-Way, One Sub-Bass per channel 12" Driver / 800watts per channel
Frequency Range 3-Way 25Hz > 25kHz
S12A - Sub-Base H 18" x W 18" x D 21.5" / 76 lbs
Maximum Peak SPL 3-Way 118 db