Meyer Sound UPA-1C Bedienungsanleitung

A-1C

UltraSeries™

Loudspeaker

Designed for a wide variety of sound

reinforcement applications, the compact,

arrayable UPA-1C allows for controlled

coverage of wide areas in theater, club and

concert sound reinforcement. The powerful

loudspeaker delivers high sound pressure

levels with extremely low distortion, for

maximum intelligibility and fidelity.

The biamplified loudspeaker consists of

a␣proprietary 12-inch low-frequency cone

driver in a vented enclosure with an 80-

degree high-frequency horn and driver.

The rugged, multiple-ply hardwood

cabinet enclosure is fitted with handles

and, optionally, aircraft-style rigging pan

fittings or threaded nut plates.

The UPA-1C requires a high-quality

professional stereo power amplifier capable

of delivering 250 watts/channel continu-

ously into 8 ohms, with a signal voltage

gain of 20␣dB (minimum) to 30 dB (maxi-

mum).

Features

Efficient high power

Ultra-low distortion

Compact and versatile

High clarity and coherence

Arrayable

Rugged

Long-term reliability

Applications

Music playback in discos

Sound reinforcement

Live music clubs

Side fill in concert reinforcement

Theater PA systems

High-power announcing

Paging indoors/outdoors

Meyer Sound Laboratories, Inc.

2832 San Pablo Avenue

Berkeley, CA 94702

(510) 486-1166

FAX (510) 486-8356

— 12

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Inches

Note 1:

Measured 1 meter from center

of cabinet face, half-space

conditions, pink noise input,

network set to FLT, smoothed

to one-third octave. Low

frequency response

dependent on load conditions.

Note 2:

Loudspeaker driven with pink

noise.

Note 3:

“A”- weighted, unbalanced.

Acoustical – UPA-1C/M-1A System

Frequency Response

80 to 18,000 Hz +4 dB

-6 dB at 60 Hz and 20 kHz

Maximum SPL

with amplifier rated at: 250 W/8 ohms/ch 60 W/8 ohms/ch

Continuous 125 dB 120 dB

Peak 132 dB 125 dB

HF Coverage

Horizontal 80 degrees

Vertical 60 degrees

UPA-1C Loudspeaker

Transducers

Low Frequency MS-12 12-inch cone driver, 8 ohms

High Frequency MS-1401B 1.4-inch throat driver, 16 ohms

High Frequency Horn Modified radial with foam lens

HF Network Y-1PD

Function DC blocking and damped band-elimination filter

Enclosure 0.8 cu. ft. vented, multi-ply Finnish birch plywood

Finish Black textured, weather protected (optional)

Protective Grill Perforated steel screen, charcoal-grey foam covering

Connector EP-4 male (EP-5 male, Europe only)

Rigging Aircraft pan fittings, or

⁄8"-16 or M10 x 1.5 nut plate

Physical Dimensions 14

⁄2" W x 22

⁄8" H x 14

⁄2" D

Weight 67 lbs. (30 kg)

M-1A Control Electronics Unit

Input Type Balanced (active), 47K ohms

Output Type Active push-pull, will drive 600 ohms

Maximum Input/Output Level

Balanced +26 dBu

Unbalanced +20 dBu

Hum and Noise

-90 dBV

Dynamic Range 120 dB

Sense Inputs 10k ohms true differential, opto-isolated

Crossover Frequency 1600 Hz

Low Frequency Delay Type Active all-pass

Driver Protection Circuitry

Low Frequency RMS limiter

High Frequency RMS limiter

VHF Peak limiter

Indicators

Sense; Hi and Lo Green LEDs

Limit; Hi, Lo, and VHF Red LEDs

Safe Green LED

Power Supply, Positive and Negative Green LEDs

Controls

Front Panel Input level control, AC on/off switch

Preset Panel VHF control, Lo Cut switch, Safe switch and VHF switch

Connectors

Balanced Inputs/Outputs 3-pin XLR (A-3), RTS

⁄4" phone jacks

Subwoofer Circuit Input Unbalanced,

⁄4" phone jack (inserts Lo Cut,

disables Level control)

Sense Inputs Banana jacks

UPA-1C Specifications

Power 120/240V AC, 50/60 Hz (internally switchable)

Physical Dimensions 19" W x 1

⁄4" H x 7

⁄4" D Standard rack mount

Weight 8 lbs. (3.6 kg)

The UPA-1C loudspeaker operates as a system with

the M-1A Control Electronics Unit (one per channel).

Optimized for the UPA-1C and UM-1C UltraMonitor™

and pre-aligned at the factory, the M-1A contains

frequency response and phase response alignment

circuitry, and Meyer Sound's exclusive SpeakerSense

™

driver protection circuitry, incorporating both peak and

RMS signal limiting.

A single-channel device operating at line level, the

M-1A is intended to be the final component in the signal

chain before the power amplifier. Its factory-calibrated

SpeakerSense circuitry protects the UPA-1C loudspeaker

components from damage due to overheating under

high power conditions. This unique circuit continuously

monitors the power applied to the UPA-1C drivers, and

individually limits the high-frequency and low-fre-

quency outputs when the safe operating limits of the

drivers are exceeded. Until the onset of overload, the

Speaker-Sense circuitry has no effect on the signal.

Also provided is a switch-selectable Safe function,

which widens the safety margin of the system and is

intended to be used when extended periods of overload

are anticipated. The Safe switch and other setup controls

are located behind a cover plate on the M-1A front panel,

providing a means of securing the system installer's

presets.

To enhance the effectiveness of the UPA-1C, the M-1A

incorporates sliding filters which band-limit the system

response under full-power conditions. This has the effect

of discriminating for vocal information in the signal to

increase clarity, and is particularly useful when sound

pressure levels are high and leakage becomes a problem.

For this reason, it is recommended that subwoofers be

used with the system if it must pass the full audio fre-

quency range at all times. The preferred choice of

subwoofer for the UPA-1C is the Meyer Sound USW-1.

7.67"

2.63"

7.50"

12.75"

14.50"

1.75"

14.50"

22.38"

13.31"

10.25"

7.0"

M-1A Control Electronics Unit

Physical Dimensions

UltraSeries™ M-1A Power

Sense Limit

Safe

Adj

Lo Cut

Cal

VHF

Var

Safe

∞

10 843

Attn dB

+ -

VHF

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, comprehen-

sive 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.

Sound

engineering

for the art

and science

of sound.

Meyer Sound Laboratories, Inc.

2832 San Pablo Avenue

Berkeley, CA 94702

(

510

) 486-1166

FAX (

510

) 486-8356

Architectural and

Engineering Specifications

The compact sound reinforcement

speaker system shall be a two-way type

with a 12" low-frequency loudspeaker front-

mounted in a ducted bass-reflex hardwood

plywood enclosure with a compression

driver mounted on a high-frequency horn

which has a 1.4" throat, and a separate

Control Electronics Unit.

The Control Electronics Unit shall

contain a power supply capable of opera-

ting from a 120/240V AC, 50/60 Hz line,

electronic crossover circuitry, electronic

delay for the phase alignment of the

low-frequency speaker, low- and high-

frequency sliding filters which automati-

cally activate under high power conditions,

RMS limiters which protect the speakers

from over-heating, equalization circuitry,

active balanced input, indicator LED’s

for power on and limiters. Total harmonic

distortion shall be less than .1%. “A”-

weighted noise level shall be at least 110 dB

below maximum rated output of +26 dBu.

The speaker system, its companion

Control Electronics Unit, and a power

amplifier rated at 250 watts/channel into

8 ohms shall meet the following perfor-

mance criteria: Frequency response, 80 Hz

to 18 kHz plus or minus 4 dB measured

with

⁄

octave pink noise, 1 meter on axis;

output of 125 dB SPL measured 1 meter

on axis with peaks of 132 dB SPL driven

with “A”-weighted noise. Total harmonic

distortion shall be less than 1% at 110 dB

SPL and 3% at 120 dB SPL one meter on

axis. Distribution pattern, 80 degrees

horizontal by 60 degrees vertical.

Speaker dimensions shall be 14

⁄

" W x

⁄

" H x 14

⁄

" D, weight 67 lbs (30 kg).

Control Electronics Unit dimensions

shall be 19" W x 1

⁄

" H x 7

⁄

" D, weight

8␣lbs (3.6 kg).

The speaker system shall be the Meyer

Sound UPA-1C. The Control Electronics

Unit shall be the Meyer Sound M-1A.

UPA-1C/M-1A

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