Electro-Voice Computer Monitor - Manual

Force
Monitor

• 12-inch two-way high-output stage

system

• 150-watts continuous, 600-watts

short-term power handling

• 80° x 55° Constant-directivity CD

horn

• Super low profile cabinet design
• Usable monitor angles of 50° and

65°

• Integral 1 3/8-inch stand mount
• Choice of paralleled 1/4-inch or

Neutrik Speakon

®

(-E) connectors

Description

The Electro-Voice Force

®

Monitor is a high-

peak output, high-efficiency super low pro-

file two-way floor monitor. The Force

®

Monitor features a constant directivity 80°

x 55° horn in a vertical orientation that pro-

vides usable monitor angles of 50° and 65°.

T h e c o m b i n e d p r o f e s s i o n a l q u a l i t y

manufactured components arrange in a

horizontal array with a very durable and

road worthy light weight enclosure. The

result is a very high performance system

with excellent vocal reproduction and bass

response that is surprising from such a

small enclosure.

The Force

®

Monitor enclosure has a unique

design that presents a very minimal front

cross section along with an exremely low

profile. A top mounted strap handle al-

lows for comfortable one handed transpor-

tation. The design is light weight, but very

rugged and features a heavy metal grill and

highly stylized corner protection.

The Force

®

Monitor also features a stand

mount adapter on the woofer side for ver-

tical orientation (standard 1 3/8 diameter.)

Power-Handling Capacity

Electro-Voice components and systems are

manufactured to exacting standards, en-

suring they will hold up, not only through

the most rigorous of power tests, but also

through continued use in arduous, real-

life conditions. The EIA Loudspeaker

Power Rating Full Range (ANSI/EIA RS-

426-A 1980) uses a noise spectrum which

mimics typical music and tests the ther-

m a l a n d m e chanical capabilities of the

components. Electro-Voice will support rel-

evant additional standards as and when

they become available. Extreme, in-house

power tests, which push the performance

boundaries of the woofers, are also per-

f o r m e d a n d p a s s e d t o e n s u r e y e a r s o f

trouble-free service.

Specifically, the Eliminator Monitor passes

ANSI/EIA RS-426-A 1980 with the follow-

ing values:

R

SR

= 6.55 ohms (1.15 x R

E

)

P

E(MAX)

= 150 watts

Test voltage = 31.34 volts rms,

138.00 volts peak (+6dB)

The “peak” power-handling capacity of a

woofer is determined by the peak test volt-

age amount. For the Eliminator Monitor, a

138.00-volt-peak-test voltage translates

into 600-watts short-term peak power-han-

dling capacity. This is the equivalent of

four times the “average” power-handling

capacity, and is a peak that can be sus-

tained for only a few milliseconds. How-

ever, this sort of short duration peak is very

typical in speech and music. Provided the

amplifier can reproduce the signal accu-

rately, without clipping, the woofer will also

perform accurately and reliably, even at

these levels.

Amplifier Recommendations

The power-handling rating of the Force

®

Monitor is 150-watts continuous. The spe-

cific tests used employ a crest factor (ratio

of peak energy to continuous energy) of

at least 6 dB. During extended testing, the

Force

®

Monitor is routinely subjected to

peak levels far in excess of its continuous

rating of 150 watts. Many amplifier de-

signs are capable of producing peak power

levels in excess of their ratings as well, so

exact “pairing’ of loudspeaker rating and

amplifier ratings is not necessary. Ampli-

fier continuous ratings of 150 watts to 300

watts into 8 ohms are suggested. Larger

amplifier ratings are recommended for maxi-

®