Aktiv Audio SC 20ST Manual - Página 2

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SC 20ST

Small Condensers

Matched Stereo Pair

Congratulations with the SC 20ST matched stereo pair of small condenser microphones!

In spite of its low cost, this stereo pair is ideal

for use in many live or studio situations. The

wide frequency response and the high SPL

capability makes them perfect for use as;

overheads for drums, on hi-hats, for miking

choirs, as room ambience mics and for miking

electric and acoustic stringed instruments. The

microhpones have external switches for Pad

and High Pass Filter.

Using the SC 20ST

The SC 20ST can be used with any standard

preamp or mixer. Use either a XLR to XLR or

XLR to 6,3 mm TRS jack standard banlanced

microphone cable. Please note that the micro-

phones need 48V phantom power and for op-

timum preformance, let them warm up for a

few minutes before use. The SC 20ST can be

used in different stereo configurations using

the supplied stereo bar.

One technique is the ORTF system (Office de

Radiodiffusion-Television Francaise).

The ORTF system is formed by spacing two

cardioid microphones so that their diaphragms

(capsules) are 17 cm apart and with an angel

of 110 degrees between the forward facing

patterns. This spacing and angel is similar to

the way our ears are positioned on our head

and simulate our listening experience. The

overall angel of pickup for the ORTF is 180

degrees with a minus 3 db loss at the center.

Another stereo configuration is the NOS sys-

tem (Nederlandsche Omroep Stichting). This

system uses two cadioid microphones at an

angel of 90 degrees with a spacing of 30 cm

between the diaphraghns (capsules).

adds even more of an apparent openness to the

sound and the overall angel of coverage for

the NOS system is 160 degrees, and it there-

fore is very useful with smaller ensembles.

Notice that the further apart you move the

microphones, the smaller the angel between

them becomes in order to maintain the overlap

at minus 3 db at the center of the stereofield,

and the narrower the overall angel of coverage

becomes. As we reach a distance of 120 – 150

cm a "hole in the middle" will appear.

X-Y is a technique where you put the two dia-

phragms (capsules) close to each other with an

angel of 45 degrees off center for both micro-

phones. This technique is often used along

with flanking microphones because of its nar-

row stereo image.

And of course you can use the microphones

separately, on hi-hats, shakers, bells, acoustic

guitars and stringed instruments of all kinds.

Precautions

Always use a pop-filter for close up vocals to

protect the capsule from mouth spray. Avoid

to expose the microphones to direct sunslight

or extreme humidity for long periods of time.

Handle the microphones with care and don't

drop them or subject them to shock, as this

can damage the electronics or the capsule. Al-

ways store the microphones in the case when

not in use and never try to service them your-

self, since this will void the warranty.

Warranty

Aktiv Audio warrants the product to be free

in normal use of any defects in workmanship

and materials for two years from the date of

purchase. This warranty does not cover abuse

or misuse of the product, use contrary to the

This

instruction, accident, ordinary wear and tear

or unauthorized repair.

Should it ever need service, please contact

your dealer.