Electro-Voice S40 Bedienungsanleitung

Electro-Voice Lautsprecher S40

Lesen Sie kostenlos die 📖 deutsche Bedienungsanleitung für Electro-Voice S40 (6 Seiten) in der Kategorie Lautsprecher. Dieser Bedienungsanleitung war für 44 Personen hilfreich und wurde von 2 Benutzern mit durchschnittlich 4.5 Sternen bewertet

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S-40

Compact Monitor

Description

The Electro-Voice S-40 is an extremely com-

pact high- performance monitor loudspeaker

system. It is ideally suited for indoor or out-

door applications requiring high-quality

sound reproduction. As a near-field moni-

tor in control rooms or broadcast studios, or

as a foreground or background loudspeaker

in restaurants and clubs, the S-40 is the

choice of professional users. Its high power

handling also makes the S-40 an ideal loud-

speaker for nearfield monitoring in live per-

formance situations. Threaded inserts in the

cabinet in combination with the optional

mounting hardware provide a flexible

mounting system for virtually any applica-

tion.

The low-frequency section is a 5-1/4" di-

rect-radiating woofer with a polypropylene

cone installed in an optimally vented high-

impact polystyrene enclosure. This combi-

nation produces an exceptionally extended

bass response with relatively high efficiency

for an extremely small enclosure. The use

of plastic materials for the enclosure and cone

allow the loudspeaker system to be used in

high-humidity environments.

The high-frequency section is a 1-in. direct-

radiating soft dome tweeter. The tweeter is

ferro-fluid cooled and uses flexible tinsel

lead wires to prevent thermal or mechanical

failure. These features in addition to the large

magnetic system make this the most rugged

tweeter ever used in a system this size.

These high quality components will provide

years of listening pleasure when driven at

reasonable levels. However, sometimes

loudspeakers are accidently over-driven,

causing the drive units to fail. To prevent

against this, EV engineers have incorporated

independent woofer and tweeter protection

circuits in the S-40. These circuits will au-

tomatically reduce the power being delivered

to the drivers if their threshold is exceeded,

greatly reducing the possibility of driver fail-

ure.

Both drivers feature low-flux-leakage de-

signs enabling the speaker to be used in close

proximity to video monitors. For very criti-

cal video monitoring applications, a mini-

mum distance of four inches from the edge

of the loudspeaker to the edge of the CRT is

recommended.

Frequency Response

The combination of 5-1/4" woofer, 1-inch

tweeter and optimized crossover result in the

wide and smooth frequency response shown

in Figure 1. This response was measured at

1 meter, using a 2 Volt (1 watt) input in an

anechoic chamber. The response is 1/3-oc-

tave averaged and no external equalization

was used.

Directivity

The polar response of the S-40 speaker sys-

tem at selected 1/3-octave bandwidths is

shown in Figure 4. These polar responses

were measured in an anechoic environment

at 10 feet using 1/3-octave pink noise inputs.

The frequencies selected are fully represen-

tative of the polar response of the system.

Beamwidth of the system utilizing the com-

plete 1/3-octave polar data is shown in Fig-

ure 2. Rq (Q) and directivity index (Di) are

plotted in Figure 3.

Power Handling Capacity

To our knowledge, Electro-Voice was the

first U.S. manufacturer to develop and pub-

lish a power test closely related to real-life

conditions. First, we use a random noise

input signal because it contains many fre-

quencies simultaneously, just like real voice

or instrument program. Second, our signal

contains more energy at extremely high and

S-40 Compact Monitor

low frequencies than typical actual program,

adding an extra measure of reliability. Third,

the test signal includes not only the overall

“long-term average” or “continuous” level -

which our ears interpret as loudness - but also

short- duration peaks which are many times

higher than the average, just like the actual

program. The long-term average level

stresses the speaker thermally (heat). The

instantaneous peaks test mechanical reliabil-

ity (cone and diaphragm excursion). Note

that the sine wave test signals sometimes

used have a much less demanding peak value

relative to their average level. In actual use,

long-term average levels exist from several

seconds on up, but we apply the long-term

average for several hours, adding another

extra measure of reliability.

Specifically, the S-40 is designed to with-

stand the power test described in the revised

EIA Standard RS-426A. The EIA test spec-

trum is applied for eight hours. To obtain

the spectrum, the output of a white noise

generator (white noise is a particular type of

random noise with equal energy per band-

width in Hz) is fed to a shaping filter with 6-

dB-per octave slopes below 40 Hz and above

318 Hz. When measured with the usual con-

stant-percentage bandwidth analyzer (one-

third octave), this shaping filter produces a

spectrum whose 3-dB-down points are at 100

Hz and 1200 Hz with a 3-dB-per octave slope

above 1200 Hz. This shaped signal is sent

to the power amplifier with the continuous

power set at 1 0 watts into the 3.2 ohms EIA2

equivalent impedance, ( .6 volts true19

RMS). Amplifier clipping sets instantane-

ous peaks at 6 dB above the continuous

power, or 0 watts peak ( .2 volts peak).48 39

This procedure provides a rigorous test of

both thermal and mechanical failure modes.

Protection Circuitry

Both the woofer and the tweeter employ in-

dependent protection circuits to prevent

against accidental overdrive and improve

system reliability. In the woofer circuit, a

solid state self-resetting switch is activated

once the safe level to the woofer is exceeded

(approximately 60 watts). This switch then

inserts a high positive current coefficient

resistor (HPCCR) in series with the woofer.

The resistance of the HPCCR increases as

the drive level to the woofer increases and

limits the power being delivered to the

woofer. The HPCCR is similar to a lamp

and will produce light that is visible thru the

port when activated. This is an indication to

reduce the gain of the power amp if output

compression is to be avoided. The maximum

acoustic output is achieved just before the

protection circuit is activated.

The tweeter protection circuit behaves in a

similar manner, except a fixed resistor is used

in place of the HPCCR which attenuates the

power to the tweeter by approximately 6 dB.

Installation Notes

On the back of the S-40 are -20(2) 1/4"

threaded inserts. These are intended to be

used with mounting systems which have 2-

3/8" mounting centers, such as the

Omnimount Systems Series 25.

A U-type bracket, the S-40MB is also avail-

able. This will allow the S-40 to be mounted

on walls or ceilings. A microphone stand

adaptor is also included. Complete mount-

ing instructions are included with the S-

40MB.

Care should be taken to ensure that the cho-

sen fixing point is strong enough to support

the S-40. Care should also be taken to en-

sure that the S-40 is not exposed to direct

precipitation.

If the speaker system is not used with one of

the mounting brackets, such as on a book-

shelf, then the rubber feet that are included

with the S-40 should be attached to the

speaker. If the speaker is placed on the bot-

tom side, then a rubber foot should be at-

tached to each of the two rear corners only.

This will compensate for the 3° draft that is

molded into the cabinet, and allows the baffle

to sit perpendicular to the surface that the

speaker is placed on. If the speaker is to be

placed on its side, then a rubber foot should

be attached to each of the four corners. The

nameplate that is attached to the grille may

be rotated depending on which mounting ori-

entation is used.

Architects' and Engineers'

Specifications

The loudspeaker shall be a two-way system

consisting of a 13 cm ( ) low-frequency5-1/4"

loudspeaker, 2.5 cm (1 inch) high-frequency

loudspeaker and frequency dividing network

installed in a vented enclosure. The divid-

ing network crossover frequency shall be

3,500 Hz. The dividing network shall in-

clude protection circuits for both the low-

frequency loudspeaker and the high-fre-

quency loudspeaker. The loudspeaker sys-

tem shall meet the following performance

criteria: Power handling, 1 0 watts per EIA2

RS-426A. Frequency response, … 3 dB from

85 Hz to 20 kHz. Pressure sensitivity, 85

dB SPL at one watt, 100 Hz to 10 kHz meas-

ured at a distance of one meter on axis. Im-

pedance, 4 ohms nominal, 3.7 ohms mini-

mum. The enclosure shall be molded of high

impact polystyrene structural foam. The unit

shall be 24.9 cm (9.8 inch) high, 17.8 cm

(7.0 inch) wide, 15.0 cm (5.9 inch) deep. The

loudspeaker system shall be the Electro-

Voice model S-40.

Limited Warranty

Electro-Voice products are guaranteed

against malfunction due to defects in mate-

rials or workmanship for a specified period,

as noted in the individual product-line

statement(s) below, or in the individual prod-

uct data sheet or owner’s manual, beginning

with the date of original purchase. If such

malfunction occurs during the specified pe-

riod, the product will be repaired or replaced

(at our option) without charge. The product

will be returned to the customer prepaid. Ex-

clusions and Limitations: The Limited

Warranty does not apply to: (a) exterior fin-

ish or appearance; (b) certain specific items

described in the individual product-line

statement(s) below, or in the individual prod-

uct data sheet or owner’s manual; (c) mal-

function resulting from use or operation of

the product other than as specified in the

product data sheet or owner’s manual; (d)

malfunction resulting from misuse or abuse

of the product; or (e) malfunction occurring

at any time after repairs have been made to

the product by anyone other than Electro-

Voice Service or any of its authorized ser-

vice representatives. Obtaining Warranty

Service: To obtain warranty service, a cus-

tomer must deliver the product, prepaid, to

Electro-Voice Service or any of its autho-

rized service representatives together with

S-40 Compact Monitor

proof of purchase of the product in the form

of a bill of sale or receipted invoice.

Incidental and

Consequential Damages Excluded: Prod-

uct repair or replacement and return to the

customer are the only remedies provided to

the customer. Electro-Voice shall not be li-

able for any incidental or consequential dam-

ages including, without limitation, injury to

persons or property or loss of use. Some

states do not allow the exclusion or limita-

tion of incidental or consequential damages

so the above limitation or exclusion may not

apply to you. Other Rights: This warranty

gives you specific legal rights, and you may

also have other rights which vary from state

to state. Electro-Voice Speakers and

Speaker Systems are guaranteed against

malfunction due to defects in materials or

workmanship for a period of five (5) years

from the date of original purchase. The Lim-

ited Warranty does not apply to burned voice

coils or malfunctions such as cone and/or coil

damage resulting from improperly designed

enclosures. Electro-Voice active electronics

associated with the speaker systems are guar-

anteed for three (3) years from the date of

original purchase. Additional details are in-

cluded in the Uniform Limited Warranty

statement.

For warranty repair or service informa-

tion, contact the service repair department

at: or .800/685-2606 501/354-0111

For technical assistance, contact Technical

Support at 8 ,66/78AUDIO M-F, 8:00 a.m.

to 5:00 p.m. Central Standard Time.

Specifications subject to change without

notice.

FIGURE–1 Axial Frequency Response

FIGURE–2 Beamwidth vs. Frequency

SPL in dB

100

360

300

200

100

BEAMWIDTH IN DEGREES

(–6 dB)

Produktspezifikationen

Marke:	Electro-Voice
Kategorie:	Lautsprecher
Modell:	S40

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