Meyer Sound MTS-4 User Manual

FEATURES

Integrated control
electronics and amplifiers

MTS-4

Self-Powered Reinforcement Loudspeaker

TruPower∆
Limiting (TPL)

Intelligent AC™ System

Compatible with the
Remote Monitoring

™

System

➪

Exceptional
low-frequency

High Peak SPL Capability

SPL

Wide audio range

R

in one unit

4-way active,
corrected x-over

Superior
engineering
for the art
and science
of sound.

Meyer

™

(RMS)

The MTS-4 is a fully integrated
unit, containing all the drivers
and amplifiers needed to
handle both high frequencies
and lower sub-harmonics.
No extra subwoofers and no
extra amplifiers are needed,
and all of this comes in
only seventeen cubic feet
of cabinet.

Each of the three low
frequency drivers has its own
vented chamber, creating
acoustical addition that gives
the MTS-4 its impressive
output levels. Its high
frequency horn rounds-out the
audio spectrum to produce a
wide, flat frequency response
(±3dB from 30Hz to 16kHz).
The MTS-4 is easy to set up.
The power supply utilizes the
Intelligent AC
provides for automatic voltage

™

system, which

selection, EMI filtering,
soft current turn-on, surge
suppression, and dual
circuit breakers. Simply
plug in a power source and
an audio signal.

The power system utilizes a
dual fan, forced-air cooling
system which removes the
heat from the heatsink and
exhausts it to the rear. Since
air is not directed over the
electronics themselves, dirt
cannot accumulate on sensitive
components—increasing the
reliability of the amplifiers.

The amplifier unit
is equipped with TruPower
Limiter technology, which
maximizes speaker protection
reliability and component life.
This breakthrough in speaker
control also results in higher
SPL at all frequencies, and

™

PATENTED

increased available headroom.
Long term power compression,
typically 3-6 dB in conventional
systems, is less than 1 dB.
Maximum SPL capability
remains constant even during
operation at high levels for
extended periods.

MTS-4 performance can be
supervised using the Remote
Monitoring System
This enables users at a
computer terminal to monitor
such parameters as limiting
activity, power output, voltage,
temperature, fan speed,
and driver status.

Servicing of the MTS-4 is
facilitated by a rear access
panel; the entire power/
amplifier module
can be removed and replaced.

™

(RMS).

Sound

Acoustical

56.75

30.00

7.5°

14.125

28.5

U

L

C

U

L

®®

LISTED

3K59

COMMERCIAL

AUDIO SYSTEM

(each loudspeaker)

Coverage

Crossover

Transducers

Audio Input

Amplifiers

AC-Power

Physical

Frequency Response

Phase Response

Maximum SPL

Dynamic Range

(-6 dB points)

Sub Frequency
Low Frequency

Middle Frequency

High Frequency

Type

Connector

Nominal Input Level

Type

Burst capability

THD, IM, TIM

Connector

Automatic voltage selection

Operational Voltage Range

Max Continuous RMS Current (>10 sec)

Burst RMS Current (< 1 s)

Max Peak Current During Burst

Soft Start Turn-on

Dimensions

Weight

Enclosure

Finish

Protective Grill

Rigging

MTS-4 SPECIFICATIONS

1

±3 dB from 30 Hz to 16 kHz

-6 dB at 26 Hz and 18 kHz

1

±70° from 90 Hz to 17.2 kHz

1

140 dB peak@1 meter
>110 dB

70°H; 60°V

40 Hz, 100 Hz, 1 kHz

18” diameter MS-18 cone
15” diameter MS-15 cone
12” diameter MS-12 cone
2” throat (4” diaphragm) MS-2001A compression driver

10kΩ impedance, electronically balanced
XLR (A-3) male and female
+4 dBu

Complementary power MOSFET output stages (audio class AB/H)

2

2480 watts (620 watts/channel)
< .02 %

1

⁄5 the

3

250V NEMA L6-20P (twistlock) inlet or IEC 309 male inlet
95-125 VAC and 208-235 VAC; 50 Hz / 60 Hz

4

Turn on: 85 VAC; Turn off 134 VAC; 50/60 Hz
Turn on: 165 VAC; Turn off 264 VAC; 50/60 Hz
@115 V: 14 A @230 V: 7 A @100 V: 16 A
@115 V: 26 A @230 V: 13 A @100 V: 30 A
@115 V: 36 Apk @230 V: 18 Apk @100 V: 42 Apk
Inrush current < 12A @ 115V

1

21

⁄4” W x 56 3⁄4” H x 30” D
280 lbs (127 kg)
Multi-ply hardwood
Black textured
Perforated metal grill, fiberglass screen
Aircraft pan fittings (3 on top, 2 on bottom).
Working load for each fitting is 600 lbs, which is

Meyer Sound Laboratories

has devoted itself to

designing, manufacturing,

and refining components

that deliver superb sonic

reproduction. Every part of

every component is

designed and built to

exacting specifications

and undergoes rigorous,

comprehensive testing

in the laboratories.

Research remains an

integral, driving force

behind all production.

Meyer strives for sound

quality that is predictable

and neutral over an

extended lifetime and

across an extended range.

Notes

PHYSICAL DIMENSIONS

(bottom view)

(top view)

21.26

13.16

7.5°

ALL UNITS IN INCHES

13.00

10.63

14.125

21.97

30.26

30.00

1. Subject to half space loading, measured with one-third
octave frequency resolution in fixed ISO bands.

2. Nominal 8Ω resistive load, pink noise, 100V peak.

3. Other connectors available.

4. The unit is rated at 95-125 VAC and 208-235 VAC, 50/60 Hz, to satisfy EC
standards for –10% to 6% AC line voltage.

!

ATENCIÓN

:

ACCESO INTERNO SOLO AUTORIZADO A PERSONAL TÉCNICO CALIFICADO

ACHTUNG

:

GEHÄUSE NICHT ÖFFNEN WARTUNG UND REPARATUR NUR DURCH ELEKTROFACHKRÄFTE

ATTENTION

:

ENTRETIEN ET REPARATIONS INTERNES NE SONT AUTORISEES QU'AU PERSONNEL TECHNIQUE QUALIFIÉ

UK WARNING

:

THIS APPARATUS MUST BE EARTHED. NO OPERATOR SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL

WARNINGS:

This surface may reach high temperatures while in use. To ensure proper operation, allow at least 6 inches clearance from this surface and adequate ventilation.

13.36

Input polarity switch

Limit LEDs

Power LED

Signal input and
loop connectors

To reduce the risk of electric shock do not remove cover. No operator serviceable parts inside. Refer servicing to qualified personnel.
To reduce the risk of fire or electric shock do not expose this appliance to rain or moisture.

S

S

H

H

U

U

P

P

NEMA L5-20

R

R

20A-125VAC

T

T

E

E

I

I

-

-

-

-

C

C

K

K

I

I

R

R

Unlock

Active

Input Loop Out

Pin
2 +
3 +

Lock

Meyer Sound, Berkeley, CA USA

Mains circuit
breakers

Mains AC inlet

Rear Panel Locations (U.S. Version)

Made by Meyer Sound, Berkeley, CA, USA

European Office:

Meyer Sound Europe
Dalston House
39-49 Hastings Street
Luton Bedfordshire
England, LU1 5BE

MTS-4 - 04.029.010.01B

Meyer Sound Laboratories, Inc.

2832 San Pablo Avenue
Berkeley, CA 94702
tel: [phone]
fax: [phone]
e-mail: [e-mail]
http: www.meyersound.com

© 1998 Meyer Sound Laboratories, Inc.

All rights reserved