Senal SCI-3212 User manual

Table of Contents:
Introduction ���������������������������������������������������������������������������������������������������������� 2
Overview ���������������������������������������������������������������������������������������������������������������3
Precautions �����������������������������������������������������������������������������������������������������������4
The Interchangeable Microphone Capsules �����������������������������������������4-5
Stereo Microphone Techniques ����������������������������������������������������������������6-9
Specifications �����������������������������������������������������������������������������������������������10-11
Warranty �������������������������������������������������������������������������������������������������������������� 12
USER’S GUIDE
SC I -3212

2
Thank you for choosing Senal.
The Senal SCI-3212 is a rugged small-diaphragm condenser microphone capable of delivering
professional-quality audio for a variety of recording applications in the field or in the studio�
Its unique design features three interchangeable capsules that allow this microphone to
change polar patterns quickly and easily� The omnidirectional, cardioid, and supercardioid
capsules provide adaptability for a wide range of recording scenarios� The excellent
transient response and high sensitivity assure detailed and accurate sound when recording
instruments or dialog� High SPL handling capability enables close mic placement to
cymbals, pianos, guitars, and other acoustic instruments, as well as recording in high-
noise environments� As a matched pair, the SCI-3212’s versatility provides the option of
selecting between several stereo miking techniques for a wide and true stereo sound�
An included shock mount allows for easy boompole mounting when recording dialog indoors or
in the studio� The included foam windscreen minimizes wind noise when shooting outdoors�
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Introduction

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Overview
Overview
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Interchangeable
capsule
XLR connector
Shock mount
Cardioid
capsule
Omnidirectional
capsule
Supercardioid
capsule
Foam
windscreen
Carrying case
(SCI-3212MP only)

4
Precautions
▪ Please read and follow
these instructions and keep
this manual in a safe place�
▪ Keep this product away
from water and all
flammable gases or liquids�
▪ Do not attempt to
disassemble or repair
this product�
▪ Make sure that this product
is intact and that there
are no missing parts�
▪ All images are for
illustrative purposes only�
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Precautions / The Interchangeable Microphone Capsules
The Interchangeable Microphone Capsules
The SCI-3212 comes with the cardioid capsule
attached� To change the capsule:
• Remove the capsule from the microphone by
turning it counterclockwise�
• Attach the new capsule by screwing it
clockwise onto the microphone�

5
The Interchangeable Microphone Capsules
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Omnidirectional capsule
Due to the high sensitivity of the SCI-3212, the omnidirectional capsule is suitable for capturing
ambient sounds of the environment and for nature recording� It’s also a good choice when recording
live sound or music� Consider the omnidirectional capsule when close-miking guitars or voices in
the studio or in quiet spaces without background noise� As a matched pair, the omnidirectional
capsule is ideal for A/B stereo recording� See A/B (Spaced Pair) technique on page 6�
Cardioid capsule
The cardioid capsule offers a wide variety of uses in the field and in the studio� It’s ideal
for capturing acoustic instruments in live and studio settings, and it’s very effective as a
drum mic or as a drum overhead� When recording speech or dialog in the studio or on
location, the cardioid polar pattern is less susceptible to picking up reflections than shotgun
microphones� This makes it an excellent option for boompole use� As a stereo pair, the
cardioid capsules are excellent for X/Y and ORTF stereo recording� See X/Y (Coincident
Pair) technique on page 7 and ORTF (Near Coincident) technique on page 8�
Supercardioid capsule
The supercardioid capsule focuses on the sound directly in front of it while
rejecting off-axis sound� This is advantageous when recording interviews or dialog
in noisy environments� It is also well suited for loud stage environments�

6
Stereo Microphone Techniques
Your matched pair of Senal SCI-3212 microphones is ideal for capturing stereo sound�
Microphone placement is crucial in successful stereo recordings� The following are
a few common microphone techniques for creating stereo sound images�
As in all miking scenarios, experimenting with the distance from your sound source and the
distance between the microphones will ultimately result in the best stereo recordings�
A/B (Spaced Pair) technique
Use the omnidirectional capsules�
• Place the microphones parallel to each other and point
both microphones toward the sound source�
• There’s no hard and fast rule for achieving the best results using this
technique� Experiment by adjusting the distance of the microphones
from the sound source, and the distance of the mics from each other�
• Send the mono signal from each microphone to its own track�
Note: Due to the timing offset of the sound reaching each microphone, you may
experience phase cancellation if mixing the stereo signal down to a mono track�
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Stereo Microphone Techniques

7
Stereo Microphone Techniques
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X/Y (Coincident Pair) technique
Use the cardioid capsules� Since the capsules are placed close together, the
stereo image won’t be as wide as the A/B or M/S techniques�
• Place the two microphones at an angle between 90° and 135° so that
the two capsules are very close to each other but not touching�
• The ideal configuration is to have the microphones placed vertically
so that one capsule is directly above the other� However, placing
the microphones side by side will also deliver satisfactory results�
• The wider the angle is, the wider the stereo image will be�
• Send the mono signal from each microphone to its own track�
Note: If you are mixing the two tracks down to a mono track, you will not encounter the
potential phase cancellation issues that can occur in the other mic techniques�
90°–135°

8
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Stereo Microphone Techniques
ORTF (Near Coincident) technique
Use the cardioid capsules� This technique is good for recording dialog or
sound in stereo without picking up a lot of the ambient room noise�
• Spread the microphones outward at an angle of 110° while
making sure that the capsules are about 6�5″ (17 cm) apart�
• Send the mono signal from each microphone to its own track�
Note: Due to the timing offset of the sound reaching each
microphone, you may experience phase cancellation if
mixing the stereo signal down to a mono track�
6.5″
110°

9
M/S (Mid/Side) technique
Use either the cardioid or omnidirectional capsules� This technique requires one SCI-
3212 microphone and a figure-8 (bidirectional) large-diaphragm condenser microphone
like the Senal SCM-660� This technique is excellent for capturing the ambience
surrounding your sound source and often offers the greatest stereo width�
• Point the SCI-3212 directly at the sound source (mid)�
• Place the figure-8 microphone just below the capsule
of the SCI-3212 and at a 90° angle (side)�
• Send the stereo signal from the figure-8 microphone
to a stereo track, and the mono signal from the
cardioid microphone to its own mono track�
• The cardioid microphone (mid) will record the sound source
directly in front of it while rejecting the off-axis sound� The
figure-8 microphone (side) will record the off-axis sound�
Note: Mixing these signals can be tricky� Duplicate the side channel and reverse the polarity�
Then combine both side tracks onto one stereo track� Mix in the mid channel with the
stereo track� The louder the stereo side track is, the greater the stereo width will be�
Stereo Microphone Techniques
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Sound
Source
90°

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Specications
Transducer Back electret condenser
Polar pattern Omnidirectional, cardioid, supercardioid
Frequency response 30 Hz to 18 kHz
Sensitivity -36 dB ±3 dB (0 dB = 1 V/Pa at 1 kHz)
Maximum input SPL 125 dB (THD <1�0% at 1 kHz)
Power requirements 9–52 V phantom power
Equivalent Noise Level ≤27 dB A (IEC 581-5)
Output impedance 350Ω ± 30%
Load impedance ≥1000 Ω
Diameter 0�8ʺ (2cm)
Height 5ʺ (12�8cm)
Weight 3�8 oz (108�2g)
Specifications

11
Specications
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Frequency Response Graph
Frequency in Hertz
-20
-30
-40
Relative Response in dB
050 100 500 1K 5K 10K 20K
-30
-40
-50
050 100 500 1K 5K 10K 20K
-20
-30
-40
050 100 500 1K 5K 10K 20K
0° 30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
0° 30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
0° 30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
200
200
200
2K
2K
2K
Omnidirectional
Cardioid
Supercardioid
Polar Pattern

GG4
Two-Year Limited Warranty
This Senal product is warranted to the original purchaser to be free from defects in materials and workmanship
under normal consumer use for a period of two (2) years from the original purchase date or thirty (30) days after
replacement, whichever occurs later� The warranty provider’s responsibility with respect to this limited warranty
shall be limited solely to repair or replacement, at the provider’s discretion, of any product that fails during
normal use of this product in its intended manner and in its intended environment� Inoperability of the product or
part(s) shall be determined by the warranty provider� If the product has been discontinued, the warranty provider
reserves the right to replace it with a model of equivalent quality and function�
This warranty does not cover damage or defect caused by misuse, neglect, accident, alteration, abuse, improper
installation or maintenance� EXCEPT AS PROVIDED HEREIN, THE WARRANTY PROVIDER MAKES NEITHER ANY
EXPRESS WARRANTIES NOR ANY IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE� This warranty provides you
with specific legal rights, and you may also have additional rights that vary from state to state�
To obtain warranty coverage, contact the Senal Customer Service Department to obtain a return merchandise
authorization (“RMA”) number, and return the defective product to Senal along with the RMA number and proof
of purchase� Shipment of the defective product is at the purchaser’s own risk and expense�
For more information or to arrange service, visit www�senalsound�com or call Customer Service at 212-594-2353�
Product warranty provided by the Gradus Group�
www�gradusgroup�com
Senal is a registered trademark of the Gradus Group� © 2017 Gradus Group LLC� All Rights Reserved�