Table of Contents:
Introduction ����������������������������������������������������������������������������������������������� 2
Overview ���������������������������������������������������������������������������������������������������� 3
Precautions ������������������������������������������������������������������������������������������������4
Mounting the Microphone ������������������������������������������������������������������� 5
Selectable Polar Pattern Switch �������������������������������������������������������� 6
High-Pass Filter ���������������������������������������������������������������������������������������� 7
Attenuation Pad ���������������������������������������������������������������������������������������7
Connecting the Microphone ���������������������������������������������������������������8
Troubleshooting ��������������������������������������������������������������������������������������� 9
Specifications ������������������������������������������������������������������������������������10-11
Warranty ��������������������������������������������������������������������������������������������������� 12
USER’S GUIDE
SCM-660
LARGE DIAPHRAGM MULTI-PATTERN
CONDENSER MICROPHONE
Thank you for choosing Senal.
The Senal SCM-660 is a professional grade, large dual diaphragm, true condenser microphone� Its
dual 1�3˝ gold-plated transducer element is designed to give detailed and true sound reproduction in
professional and project studio applications� Its full rich tone and clarity make it an ideal microphone
for studio recording, broadcasting, podcasting, or live recording� With a wide dynamic range and
high SPL of 140 dB, you’ll be able to capture vocals and instruments accurately with pristine clarity�
The SCM-660’s selectable polar patterns provide flexible options to pick up audio
while minimizing off-axis noise and reflections� An onboard -10 dB attenuation pad
allows you to achieve optimal signal levels when in front of loud sound sources such as
guitar cabinets or singing� The 80 Hz high-pass filter rolls off unwanted low-frequency
noise and rumble caused, for example, by wind or the microphone shaking�
The included shock mount reduces unwanted vibrations when ultimate sensitivity
is required� Rugged all-metal construction provides durability in use or during
transport, and the aluminum case and protective pouch/dustcover add extra
protection� You’ll enjoy using the Senal SCM-660, so let’s get started�
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2
Introduction
Overview
Front Back
1.3˝ gold-plated
dual-diaphragm
Shock
mount
condenser
transducer
5/8˝ male to
3/8˝ female
Grille
adapter
Shock-mount
Selectable
polar pattern
switch
Hi-pass
filter
-10 dB pad
switch
thread
switch
Carry case
Protective
Gold-plated
XLR connector
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Overview
Threaded
mount
pouch/
dustcover
3
Precautions
▪ Please read and follow these instructions and keep this manual in a safe place�
▪ Exposure to high sound levels can cause permanent hearing loss�
Avoid listening at high volumes for extended periods�
▪ Keep this product away from water and flammable gases or liquids�
▪ Do not attempt to disassemble or repair this product yourself�
▪ Handle this product with care�
▪ Clean this product with only a soft, dry cloth�
▪ To avoid damage to this product, be careful not to overtighten
or improperly thread any of the threaded fittings�
▪ Make sure this product is intact and that there are no missing parts�
▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪
4
Precautions
Mounting the Microphone
To mount the SCM-660, follow these steps:
1� Screw the included shock mount onto a 5/8˝ threaded
microphone stand and make sure it is in a 90-degree position�
Then fully tighten the locking knob on the shock mount�
2� Carefully thread the bottom of the microphone to the shock
mount using the shock-mount thread and fully tighten�
Note: The front of the microphone (showing the Senal logo)
should be facing your sound source for recording�
Mounting the Microphone
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5
Selectable Polar Pattern Switch
Cardioid
When the cardioid pattern is selected ( ), the microphone will pick up sound from
the front and reject sound from the back of the microphone� This can be used for
most frontal recording applications such as singing or guitar playing�
Figure 8
When in the figure 8 pattern ( ), the microphone will pick up sound from the front and back of the
microphone� Any noise from the sides will be rejected� This is great for two-person interviews with the
microphone in between them, or MS (mid-side) stereo recording techniques such as drum overheads�
Omni
When in the Omni pattern ( ), the microphone will pick up sound from all
around� This is a preferred setting for high-quality ambience sound miking, or
far-field recording in high-quality large and small recording rooms�
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6
Selectable Polar Pattern Switch
High-Pass Filter
The high-pass filter setting can be used to reduce the sensitivity of the microphone to low-frequency
sounds, additional noise and vibration from outside traffic, air conditioning or other background audio�
When set to ON ( ) the SCM-660 will filter sound 80 Hz and below� The OFF setting ( ) results in
no filtering�
Attenuation Pad
The SCM-660’s attenuation pad can be used to lower the output by 10 dB for preventing distortion
when recording loud sound sources like singing, percussion, or guitar amplifiers� In the left position,
there is 0dB attenuation, in the right position, there is -10dB attenuation�
High-Pass Filter / Attenuation Pad
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7
Connecting the Microphone
Use an XLR cable (not included) to connect the microphone to your mixing console,
microphone preamp, or recording device� Make sure phantom power is turned on�
Note: Phantom power must be used with this microphone� Make sure
your recording device has proper +48 V phantom power�
Warning
Make sure all faders and volume knobs are down� After the microphone is
connected, set the volume to your preferred level for recording�
Before recording, make sure the high-pass filter is set to OFF ( ) and the
attenuation pad is not engaged� See previous section for further reference�
If using this microphone for vocals, do not sing or blow directly into the
diaphragm� Use a pop filter (not included) to eliminate vocal plosives and
shield against corrosive moisture that can damage the diaphragm�
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8
Connecting the Microphone
Troubleshooting
Problem Solution
No sound is
being recorded�
The sound is
distorted�
Too much lowfrequency noise
or rumble is
being recorded�
Make sure your mixer or amplifier is turned on and phantom power is engaged�
The fader of the channel or master volume on your
mixing console is turned all the way down�
Your preamp gain is turned all the way down�
Make sure the microphone is properly connected and connections are secure�
Check your cable to make sure it’s reliable� Try switching it with another cable�
Turn on the microphone’s attenuation pad�
Move the microphone away from the sound source�
Turn on the high-pass filter�
Turn off air conditioners, fans, heaters or other devices
that might be interfering with your recording�
Troubleshooting
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9
Specifications
Element:
Diaphragm:
Polar pattern:
Dual, true condenser transducer
Dual 1�3 inch (34 mm) gold-plated diaphragm
Cardioid, Figure 8, Omni
Frequency response: 20 Hz – 20 kHz
Sensitivity:
Signal-to-noise ratio:
Maximum input SPL:
Impedance:
Power requirements:
Output connector:
Pad:
High-pass filter:
Dimensions:
Weight:
▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪
10
-33/-39/-38 dB ± 3 dB (0dB=1V/Pa at 1 kHz)
76 dB (1 kHz @ 1 Pa)
130 dB (140 dB with -10 dB pad engaged) (THD≤1�5% at 1kHz)
100 Ohms ± 20%
+48 V
Gold-plated 3-pin XLR
-10 dB
80 Hz
6˝ × 2˝ (15�24 cm × 5�08 cm)
1�15 lbs� (0�52 kg) / 3�9 lbs� with case (1�8 kg)
Specifications
Frequency Response Graph
0°
Polar Pattern
Cardioid
Figure 8
Omni
Relative Response in dB
Specifications
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-30
-40
-50
-30
-40
-50
-30
-40
-50
180°
0°
180°
0°
180°
30°
60°
90°
120°
150°
30°
60°
90°
120°
150°
30°
60°
90°
120°
150°
330°
300°
270°
50
0
50
0
50
0
200
100 500
100 500
200
100 500
200
1K
2K
1K
2K
1K
2K
5K
10K
5K
10K
5K
10K
20K
20K
20K
240°
210°
330°
300°
270°
240°
210°
330°
300°
270°
240°
210°
Frequency in Hertz
11
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� © 2015 Gradus Group LLC� All Rights Reserved�
GG1
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