Toa WM-290, WT-770, WT-780, WT-870, WTU-770 Specifications

TOA PASSWORD™ SERIES

WIRELESS MICROPHONE SYSTEMS

DESCRIPTION

TOA’s Password Series is a VHF high-band wireless
microphone system operable between 168mHz and 216mHz.
The Password systems are uniquely suited for professional
audio applications ranging from gymnasiums and houses of
worship to classrooms, boardrooms, auditoriums, and live
theater.

All four systems in the Password Series are equipped with
TOA’s proprietary double-squelch circuitry, consisting of a
noise squelch and a tone-key circuit. The noise squelch
automatically mutes signals at approximately 14dB

µ (5

µ

V) to

prevent unwanted RF noise from being transmitted. The tone­key circuit is a high-frequency 32.768kHz side-band signal
that is broadcast by the transmitter simultaneously with the
audio signal. The receiver is designed to reject any RF Signal
which does not have the tone-key present, especially when
the transmitter is off. As a result, the receiver will not process
any other audio signal which is nearby in frequency or location
if the tone key is not present.

TOA’s Password Series also features a compander circuit
which compresses the audio signal within the transmitter at a

ratio of 2 : 1. The signal is then expanded at the same ratio by
the receiver. This boosts the dynamic range to better than
90dB. The original audio signal is unaltered throughout the
entire compression/expansion process.

Four microphones are available with TOA’s Password Series.
Each mic transmitter will operate continuously on a single AA
battery for more than 12 hours. For enhanced speech
applications, TOA offers the WM-270 hand-held electret
condenser microphone. The WM-280 is a hand-held dynamic
microphone for vocal use. The WM-290, which includes a
Shure SM-58 head, is also a hand-held dynamic microphone.
The WM-370 is a unidirectional lapel condenser microphone
with a body pack transmitter.

PASSWORD™ SERIES MICROPHONES

WM-270

Electret
Condenser
Microphone

WM-280

Dynamic
Microphone

WM-290

Dynamic
Mlcrophone

Lapel Microphone

There are four systems that comprise TOA’s Password Series.
The 870 true diversity and 770 non-diversity wireless systems
each consist of two-port modular receiver frames, which
accept frequency-specific tuner modules. Occupying only a
half-rack space, two receivers can be mounted side-by-side,
yielding four frequencies in a single rack space. The modular
design of both systems allow you to add or change
frequencies in minutes.

TOA’s 780 Scout is a single-channel, non-diversity wireless
microphone system designed to deliver professional
performance at an attractive price. Packaged in a compact
case for placement flexibility, the Scout utilizes all the
performance functions of TOA’s 770 non-diversity system.
The Scout includes a built-in telescoping antenna and an
externally mounted AC power supply.

PASSWORD™ SERIES RECEIVERS

WT-870 Dual-channel Diversity Receiver Frame

WT-780

WT-770 Dual-channel Receiver Frame

WTU-870

True Diversity
Tuner Module

The 600 series portable
meeting amplifiers
incorporate the Password

600 SERIES PORTABLE
MEETING AMPLIFIERS

Single-Channel

Receiver

WTU-770

Non-diversity
Tuner Module

System non-diversity wireless
microphone into a compact,
ruggedly portable PA system.
The two models,
WA-641 and WA-641C (with
integrated cassette player),
feature a 20-watt, two-way
speaker/amplifier system, a
wired low-impedance
microphone input, an auxiliary

WA-641C

(15W)
with
cassette

input, and two non-diversity
microphone receiver tuner module slots, along with a built-in
telescoping antenna.

F/or added versatility, the Password Series includes an
antenna distributor, model WD-770, which splits the input from
a single antenna or a pair of antennas into eight separate
frequencies. Ideal for use in non-diversity or diversity
applications, the WD-770 eliminates the need to provide
additional antennas when more than two frequencies are used
within a wireless system.
With a single WD-770, one

ANTENNA DISTRIBUTOR

antenna can be utilized to
manage up to eight non­diversity signals, while a pair
of antennas working with two
WD-770 units can supply

WD-770

input for up to eight separate
diversity frequencies.

FEATURES

QUIETING CURVE

1. Modular design enables easy change or addition of frequencies

(870 & 770 models).

2. Up to four separate frequencies available in one rack space

(870 & 770 models).

WT-77O+WTU-770 FCC Part 74

DE-EMPHASIS

50µ

S

3. 23 frequencies available, up to eight compatible channels in any

geographical area.

4. FCC & UL approved.

5. Features VHF high-band operation from 168mHz to 216mHz.

6. Double squelch system combines noise squelch to eliminate

ambient RF noise with tone-key circuitry to block out stray RF signals.

7. Compander circuit guarantees better than 90dB dynamic range.

8. Four different microphones available, including a Shure SM-58.

9. 12 or more hours of continuous mic operation on one AA battery

10. LED low power indicator on transmitter activated at least 30
minutes before power fails.

WT-770+WTU-770 FCC Part 74 A-Weight

DE-EMPHASIS 50

µ

S

11. WD-770 optional antenna distributor can be used with the 870
and 770 models to split the input from a single antenna or pair of
antennas into eight separate frequencies.

12. Two year warranty.

Accessories

YW-620
Dipole Antenna

WT-770=WTU-770 FCC Part 90
DE-EMPHASIS 50µS

YW-610
Mic Stand Mounting
Antenna

YW-600
Whip Antenna

YW-451
Antenna Cover

for Outdoor

Installation
of YW-620

J-700
Joining Metal Plates for All 1/2 Width
Wireless Equipment
(Side-by-Side Mounting)

( 1 pair )

MB-14
Rack Mounting Brackets

(1 pair)

WP-860/760
Tuner Panel

BK-014B
Half Width
Blank Panel

WT-770 + WTU-770 FCC Part 90

A-Weight

DE-EMPHASIS 50µS

SPECIFICATIONS

Microphones

Model No.

WM-280 (Dynamic Microphone) WM-290 (Dynamic Microphone)

WM-270 (Electret Condenser Microphone)

WM-370 (Lapel Microphone)

Frequency Range

168mHz~216mHz

______

Microphone Element

TOA original dynamic, cardioid

Shure SM58 dynamic, cardioid

TOA original electret, cardioid

TOA original electret, cardioid

Frequency Stability

±0.005% (for USA FCC part 90, 74) ±10kHz (for UK MPT1345), 0.002% (for Australia)

RF Carrier Power

15mW (except UK MPT1345)

Effective Radiated Power

Less than 2mW (for UK MPT1345 only)

Maximum Input Level

144dBspl

144dBspl

127dBspl

115dBspl

Modulation (Max.)

± 15kHz deviation (for USA FCC part 90, Australia DOC 60) ±40kHz deviation (for USA FCC part 74, UK MPT1345)

Tone Frequency

32.768kHz

Controls

Power on/off, Variable sensitivity control

Power on/off

Battery

1 x LR6 (AA size) (15V) Alkaline

Current Drain

90mA typical (1.5V)

Battery Life

More than 12 hours

Battery Indicator

Green and Red LEDs

Antenna

Internal dipole

Internal dipole

Internal dipole

Internal loop

Ambient Temperature

14°F~122°F (-10°C~+50°C)

Dimensions

∅ 1.97" x 8.86" (0 50 x 225 0mm)

2.01" x 9.37" (051 x 238.0mm)

1.50" x 8.76" (038 x 222.5mm) 2.44" x 3.86" x 0.81"(62 x 98 x 20.5mm)

Weight

0.859 Ibs. (390g) with battery

0.859 Ibs. (390g) with battery

0.594 Ibs. (270g) with battery

0.198 Ibs. (90g) with battery

Standard Accessories

1 x Microphone holder, 1 x Color identification label (6 colors)

1 x Costume clip