Instruction Manual
PROFESSIONAL SOUND SYSTEM
Headset Microphone
Model HY1/HY2
GENERAL DESCRIPTION
The TOA HY 1 and HY 2 are headset type microphones
designed for professional level applications in recording, live
sound reinforcement, and broadcast environments. Unlike
the typical handheld or stand mounted mic, the "hands-free"
configuration allows the user to concentrate on the perfor-
mance rather than the microphone. The HY's feature a uni-
que design which provides superb performance and number
of functions never before available. They are ergonomically
designed to ensure comfort and stability for sustained
periods of time, without fatigue. The HY 1 and HY 2 are iden-
tical in design and function with the exception of the head-
band. The HY 1 headband is designed for extended wear, and
the HY 2 headband is designed to be hidden in the user's
hair.
The HY headsets are equipped with a sturdy beltpack which
provides operating power, mixing, and stereo monitoring
functions. The monitoring system is designed to allow the
user to independently control monitor (foldback) sends and
personal vocal level through the integral stereo headphone
system, directly from the beltpack. An optional 15 foot exten-
sion cable (C15-HY) allows the beltpack to be isolated from
the headset. The HY systems may be operated from two 1.5
volt "AA" batteries, or from an external phantom power
supply.
FEATURES
1. Ergonomic "hands-free" design provides secure attach-
ment to user's head, and allows comfortable wear
without fatigue.
2. Smooth, extended "vocal" frequency response, and ex-
cellent transient response.
3. High quality, fixed-charge condenser microphone element
with cardioid pick-up pattern. Interchangeable mic cap-
sules allow precision response tailoring for optimum
vocal performance.
4. Standard version is fitted with mic capsule designed for
male vocal response (HMV). Optional capsules are
available for female vocal, or male tenor vocal (HFV), and
limited bandwidth intercommunications (HCM).
5. Integral stereo headphone monitoring system for "per-
sonalized" foldback and cueing functions.
6. Red LED lights to indicate "mic live" status.
7. Cough button.
8. Headset may be worn from either right or left side.
9. System may be powered from two 1.5 volt "AA" bat teries.
or an external phantom power supply.
The fixed-charge condenser mic element employs a back-
electret type design with a gold-vaporized, extremely thin
membrane (4µm) to provide superior performance and high
stability. Frequency response is tailored to roll off the low
end, producing a well balanced low frequency characteristic
and eliminating problems associated with "proximity effect."
(Proximity effect causes the mic to accentuate the low fre-
quencies, and in extreme cases may cause the vocal to
sound boomy and muffled.) A cardioid pickup pattern ensures
that surrounding noise is rejected, allowing the vocal to be
clear, clean and distinctive.
The HY headsets are equipped with an interchangeable mic
capsule which is voiced for male vocal response (HMV),
however, optional capsules are available. The HFV is voiced
for female or tenor male vocals, and the HCM for limited
bandwidth intercommunications. All mic capsules feature a
red LED to give a visual indication of "mic live" status. A
cough button is also provided on the headset to allow the
user to turn the mic element off when necessary (the LED
goes out).
10. Sturdy beltpack provides operating power, mixing and
monitoring functions.
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Assembly Diagram
HY1 (left-side operation)
HEAD
BAND
COUGH
BUTTON
HEAD
PAD
MIC
ADJUSTMENT
KNOB
ARM HOLDER
MIC ARM
MIC
CAPSULE
"HMV"
BATTERY
COVER
"AA" BATTERY×2
HY2 (left-side operation)
HEAD
BAND
FROM MIXING
CONSOLE
TO MIXING
CONSOLE
— 2 —
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Operating Instructions
<Assembly Instructions for left-side operation>
6. Turn the beltpack power switch to "OFF," and
1. Assemble the HY headset according to the
assembly diagram.
(A) Attach the head pad marked "L" to the left side of
the headset, and the head pad marked "R" to the
right side, by pressing firmly until they "snap" into
rotate the monitor level volume control to "MIN"
and the monitor balance control to its center pos-
tion. Connect an XLR cable between the MIC
OUTPUT of the beltpack, and a low-Z input of a
mixer or sound system. If the integral monitoring
system is to be used, insert a stereo or mono 1/4"
phone plug into the LINE INPUT JACK, and slide
the line mode selector switch to the appropriate
setting.
place.
(B) Connect the interconnecting cable to the headset
and the beltpack, ensuring that the locking ring of
each connector is fully engaged.
(C) If the internal monitoring system is to be used,
connect the stereo mini plug of the PH 5 head-
phone to the headphone jack of the headset.
(Note: Other stereo headphones with an im-
pedance of 16 ohms or greater may be used if
desired.)
7. Place the beltpack power switch in the "ON" posi-
tion. Set the COUGH BUTTON to the "ON" posi-
tion, and the red LED will light to indicate "mic
live"status. Rotate the MONITOR LEVEL VOLUME
CONTROL to obtain a desirable level in the head-
phones, and adjust the MONITOR BALANCE CON-
TROL to obtain the proper "mix" between the direct
vocal and the line input monitor signal.
2. Insert the "L" and "R" units of the headphone into
the respective left and right ears as illustrated.
8. For right-side operation, reverse the positions of the
"L"and "R" head pads. The MIC ARM should be
reversed by carefully pulling the CANTILEVER out
away from the headset (just enough for clearance)
and swinging it to the other side; then gently lower
the arm to the surface of the headset. Orient the
red LED of the mic capsule toward the face, by
first loosening the MIC ADJUSTMENT KNOB, turn-
ing the shaft, and then retightening the knob.
3. Set the cough button to the "mic off" position.
"mic off"
position
"mic on"
position
CANTILEVER
OFF
POSITION
SPECIAL
SCREW
4. Position the headset so the "L" and "R" head pads
rest immediately above the respective "L" and "R"
ears, and adjust the headband for a comfortable fit.
5. Loosen the mic adjustment knob, and position the
mic capsule approximately 10-25mm (1/2-1 inches)
from the corner of the mouth. Ensure that the can-
tilever is positioned fully downward, and carefully
tighten the mic adjustment knob to hold the mic
arm in the desired location. You should experiment
with the positioning of the mic capsule, in relation
to the mouth, to determine the location that pro-
vides the best reproduction of your individual vocal
tonality and performing style.
POSITION FOR
RIGHT-SIDE
OPERATION
POSITION FOR
LEFT-SIDE
OPERATION
Note: The cantilever that connects the mic arm to
the body of the headset allows you to swing the
mic arm up and away from the face when
necessary, and then reposition the mic arm to ex-
actly the same location when desired.
— 3 —
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Stereo Headphone Monitoring System
The stereo headphone monitoring system was designed to monitor the vocal, direct from the
mic capsule, and mix it with an external line level input signal, such as a monitor (foldback)
signal from a mixing console. The combined signals are sent to the stereo headset after being
amplified by the beltpack's stereo amplifier. This allows the user to adjust his own mixing
balance and master sound level independently of other performers. Disconnecting the head-
phone makes it possible to use the headset only as a microphone.
The monitoring system is powered by two 1.5 volt "AA" dry cell batteries, which are housed in
the beltpack. To operate the unit, turn the battery power switch to the "ON" position. Please
note that even though the HY headset is designed to operate from an external "Phantom"
power supply, the monitoring system, because of its relatively high power requirements, still
requires power from the batteries in the beltpack.
)
Line Mode
Selector Switch
Control Panel Diagram
Monitor Level
Volume Control
Monitor Balance
Control
)
Battery ———
Power Switch
Mic
Output Connector
Line
Input Jack
Battery Power Switch and Phantom power supplies:
This switch turns the beltpack battery power supply
on or off. Setting the switch to ON supplies battery
power to the mic capsule as well as to the head-
phone monitoring system. If phantom power is sup-
plied from an external source to the beltpack, the
mic capsule is automatically switched to the exter-
nal source for its operation, regardless of the posi-
tion of the BATTERY POWER SWITCH.
Line Mode Selector Switch:
The switch setting should be determined by the
type of 1/4" plug (stereo or mono) which is inserted
into the LINE INPUT jack. Place the switch in the
STEREO position when a stereo plug is inserted,
and to MONO when a mono plug is inserted. Set-
ting the switch to the MONO position when a
stereo signal is inserted will cause the "R" signal to
be disconnected from the circuitry, and only the
"L" signal will be heard through the headphones.
Please see the block diagram for a full understan-
ding of the signal flow path.
NOTE:
The headphone monitoring system always requires
battery power from the beltpack, due to the
relatively high power requirements common to this
type of system.
Monitor Balance Control:
This control adjusts the balance or "mix" heard
through the stereo headphone system, between the
direct vocal from the headset mic, and the line in-
put signal. The volume of the direct vocal in-
creases in relation to the level of the line input
signal as the control is rotated toward "MIC," and
decreases as the control is rotated toward "LINE."
Line Input Jack:
This jack accepts any line level input signal, and is
rated +4dB 10K-ohms. The jack would typically be
connected to either a stereo or mono send from a
mixing console. It also serves very well as an input
for a tape deck or other pre-recorded music
source, except a magnetic turntable. Set the LINE
MODE SELECTOR SWITCH to STEREO or MONO
according to the type of 1/4" phone plug which is
inserted into this jack.
Monitor Level Volume Control:
This control adjusts the volume level heard through
the stereo headphone system. It does not in any
way effect the output of the mic signal through the
MIC OUTPUT connector.
Mic Output Connector:
The vocal signal from the headset microphone is
routed to this XLR connector. The signal available
at this output is not affected by the settings of
either the MONITOR BALANCE CONTROL or the
MONITOR LEVEL VOLUME CONTROL. The output
impedance is 250 ohms balanced, and would
typically be connected to a low impedance XLR
connector of a mixing console or powered sound
system.
— 4 —
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Capsule Replacement
"HMV" capsule (accessory)
LOCK SCREW
"HFV" capsule (option)
"HCM" capsule (option)
Loosen the lock screw, replace the mic capsule
carefully, and tighten the lock screw.
HY Applications Guide
LIVE ON-STAGE
BROADCAST PRODUCTION
Cue output
Monitor send out
(mono or stereo)
in
(single or dual channel)
producer/director mic out
in
out
Broadcast Console
cue input
HY
Mixing Console
low-Z input
HY
vocal mic out
out
RECORDING STUDIO
VIDEO POST PRODUCTION
Cue output
Cue mix out
(stereo or mono)
in
(stereo or mono)
in
Recording Console
balanced input
Recording Console
balanced input
HY
HY
announcer mic out
vocal mic out
out
out
HOME RECORDING
COMMERCIAL
Talkback out
Communications
Control Center
in
in
HY
(single or dual channel)
Porta-Studio
low-Z input
HY
vocal mic out
out
out
balanced mic input
INDUSTRIAL
STAGE CREW COMMUNICATIONS
Communications out
Talkback out
Voice Activated
(computer assisted)
Manufacturing
in
in
(single or dual channel)
(single or dual channel)
Mixing Console
cue input
HY
HY
control mic out
out
com mic out
out
voice control input
INSTITUTIONAL
LIVE BROADCAST
Cue/monitor out
(stereo or mono)
Cue/monitor out
(single or dual channel)
announcer mic out
in
in
Broadcast Console
HY
HY
Mixing Console
cue input
low-Z balanced
input
Director mic out
out
out
— 5 —
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HY1/HY2 Specifications
<Construction>
<Microphone>
Mic capsule
Headset
HMV (accessory)
HFV (option)
HCM (option)
Mic Capsule "HMV"
Beltpack
Application
Male vocals
Female vocals or male
tenor vocals
Communication
Interconnecting Cable
Stereo Headphone
Fixed-charge (back-electret) condenser
Type
Frequency response
Polar pattern
Impedance
70-20,000 Hz
Cardioid
60-20,000 Hz
100-20,000 Hz
250 ohms balanced
Output levels (.1,000 Hz)
Open circuit voltage
(OdB = 1V/µbar)
-77 dB
-57 dB
-149 dB
-74 dB
-54 dB
-146 dB
-77 dB
-57 dB
-149 dB
Power level
(OdB=1mW/10µbars)
EIA rating Gm
(OdB = 1 mW/0.0002µbar)
Equivalent noise level 35 dB (A-weighted)
Maximum SPL
Phasing
122dB(at 1,000 Hz 1%THD)
Positive pressure on diaphragm produces positive voltage at pin 2
Power supply
Two 1 .5 volt "AA" batteries or 9 to 52 volts phantom power supply
(Phantom power supply has automatic priority over batteries)
Current drain
Output connector
0.8 mA (9V phantom)-5.3 mA (52V phantom)
XLRM type
HMV capsule Frequency Response
Polar Pattern
HFV capsule Frequency Response
Polar Pattern
HCM capsule Frequency Response
Polar Pattern
— 6 —
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HY1/HY2 Specifications
<Monitor amplifier>
<Battery life (alkaline batteries)>
Maximum output
12 hours (maximum monitor level)
60 hours (1mW monitor level)
55mW/ch (18 ohms load 10%THD)
Line input
80 hours (without monitoring)
Batteries should be replaced when the LED
indicator does not light brightly.
+4 dB/10 kilo-ohms
("BALANCE": center "LEVEL": max 2mW output)
Frequency response
110-15,000 Hz (mic)
<Net weight>
35-15,000 Hz (line input)
headset: 105 grams (3.7 oz) /HY1
Power supply
85 grams (3.0 oz) /HY2
Two 1.5 volt "AA" batteries
Beltpack: 265 grams (9.3 oz) including batteries
HMV capsule: 15 grams (0.5 oz)
<Stereo headphones>
Interconnecting cable: 34 grams (1.2 oz)
Stereo headphone: 10 grams (0.4 oz) including cord
Driver unit
ø15mm(ø0.59")
Frequency response
50-20,000 Hz
Impedance
<Standard accessories>
Hard case
Special screwdriver
18 ohms
Sensitivity
<Optionalaccessories>
102dB/mW
HFV: Replacement capsule for female or tenor male
vocals
HCM: Replacement capsule for communication
C15-HY: Extension cable (15 ft)
C15-M: XLR to XLR cable (15 ft)
C20-M: XLR to XLR cable (20 ft)
Dimensions
HY1
— 7 —
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Dimensions
HY2 (same as that of the HY1 except the headset)
Block Diagram
LED
REGULATOR
PHANTOM
PRIORITY CIRCUIT
PHANTOM
POWER
COUGH
BUTTON
MIC
OUTPUT
MIC
UNIT
BATT
OUTPUT
TRANSFORMER
POWER
SW.
LINE
MIC
LINE
INPUT
MONO
STEREO
STEREO
HEADPHONE
LINE
SW.
BALANCE
LEVEL
— 8 —
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Printed in Japan
133-04-168-80
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