Studiomaster Professional SEQ 302F User manual

Professional Dual 30-Band Stereo Graphic Equalizer
with Feedback Detection System
SEQ 302F
WARNING :
THIS UNIT MUST BE EARTHED.
KEEP WELL VENTILATED.
SERIAL NUMBER
FUSE : T 1AL/250V
240V~/50Hz, 50Watts
MADE IN P .R.C.
2
1
OUTPUT
2
1
INPUT
SEQ 302F
ON
OFF
POWER
12
3
12
3
1. Safety Instructions
2. Introduction
3. Features
4. Operation
5. Technical Specifications
6. Setup Diagrams
Index:
+12
0
-12
+12
0
-12
+12
0
-12
+12
0
-12
SEQ 302F
ON -20 -15 -10 -5 0 +8 +20
DISPLAY LEVEL
OFF
ON
DISPLAY LEVEL
IN
BYPASS
FREQUENCY
LF
CUT
EQ
BYPASS
LF
CUT
EQ
BYPASS
OFF
ON
IN
BYPASS
+6dB
0dB
8
0
-20
+20
+6dB
0dB
8
0
-20
+20
CHANNEL 1
CHANNEL 2
Dual 30 Band Equalizer
With Feedback
Indicator System
FEEDBACK
INDICATION
FEEDBACK
INDICATION
25Hz 31 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1K 1K25 1K6 2K 2K5 3K15 4K 5K 6K3 8K 10K 12K5 16K 20KHz
ON -20 -15 -10 -5 0 +8 +20

Thank You for purchasing the Studiomaster Professional SEQ 302F, Dual 30-Band stereo graphic equalizer.
To ensure maximum performance and safety, please follow this instruction manual carefully.
Please retain this manual for future reference.
For any complaint, feedback or testimonials please contact our Distributor / Dealer.
3. Features
•
•
•
•
•
• Balanced inputs and outputs with 1/4” TRS and XLR connectors.
Professional Dual 30-Band stereo graphic equalizer with Constant Q factor for live sound and install applications.
Feedback detection system with LED for each frequency instantly reveals the critical frequencies.
Durable & Accurate 20mm Faders for easy level setting of each frequency.
Range setting between +12dB/-12dB to give the gradual variation required.
Low Frequency cut & EQ bypass switches.
2. Introduction
The Feedback Detection System is one of the most outstanding characteristics of our graphic equalizer. This ingenious circuitry
lets you immediately recognize & eliminate feedback frequencies. The Feedback Detection System uses the LEDs to indicate
the critical frequencies. This way, one can easily identify & control the particular frequency feedback.
1. Safety Instructions
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: To reduce the risk of fire or electrical shock, do not expose this appliance to rain or moisture.:
This symbol indicates that dangerous voltage constituting risk of electric shock is present within this unit.
This symbol indicates that there are important operating and maintenance instructions in the literature
accompanying this unit.
CAUTION: To reduce risk of electrical shock, do not remove the cover.
There are no serviceable parts inside the device. Maintenance &
service operations are only to be carried out by authorized dealers.
•
•
•
•
•
•
• Make sure the power cord should be routed so that they do not get pinched & get subject to wear or tear.
• Always use a dry cloth to clean the product.
• Do Not drop the product, as it may cause the product to mal-function.
If the device has been exposed to extreme temperature fluctuation (e.g. after transportation), do not switch it on
immediately. The arising condensation might damage your device. Leave the device switched off until it has reached
room temperature.
The voltage and frequency must be the same as stated on the device. Wrong voltages or power outlets can lead to
damage of the device & fatal electrical shock.
Always plug in the power plug last. Make sure that the plug is connected properly to the outlet.
All operation & user instruction should be followed.
The product should be kept away from water & moisture.
Make sure the product is always well ventilated keep it away from extreme heat or cold.
Factory Repair Service maybe required in the following circumstances:
• The Power supply cord or the plug has been damaged.
• If the product has been exposed to liquid spillage, rain or heavy moisture.
• If the product exhibits a change in performance & doesn’t operate properly.
• If the product is damaged due to it being dropped.
1

2
4. Operation
Front Panel Introduction
NOTE: Channel 1 and 2 are identical.
1. This fader is used to boost or cut a dedicated frequency.
a. Moving the fader upward will boost frequency upto +12dB.
b. Moving the fader downward will cut frequency upto -12dB.
.
7.
Boost/Cut fader:
2. : This switch is used to cut/attenuate signals below 63Hz. The low cut is activated when switch is in
''pressed'' position.
3. : This LED lights up when the low cut mode is in operation.
4. : This switch is used to activate the EQ IN/Bypass mode. When switch is in ''Released'' position,
EQ IN mode is active and if the switch is in ''Pressed'' position, EQ is ''Bypassed''.
5. : This LED lights up when EQ is by passed.
6 : This fader sets the signal level to the Equalizer.
: It will show the signal level. Red led indicates the clipping of the signal.
8. : This LED lights up when there will be feedback generation.
9. : Feedback indication LED brightness can be controlled by display fader.
10. LED lights to indicate equalizer power on status.
Low cut switch
Low cut LED
EQ IN/Bypass switch
EQ Bypass Status LED
Input level fader
Bargraph
Feedback Indication LED
Display Fader
Power On LED:
10
9
2
1
7
6
4
3
8
+12
0
-12
+12
0
-12
+12
0
-12
+12
0
-12
SEQ 302F
ON -20 -15 -10 -5 0 +8 +20
DISPLAY LEVEL
OFF
ON
DISPLAY LEVEL
IN
BYPASS
FREQUENCY
LF
CUT
EQ
BYPASS
LF
CUT
EQ
BYPASS
OFF
ON
IN
BYPASS
+6dB
0dB
8
0
-20
+20
+6dB
0dB
8
0
-20
+20
CHANNEL 1
CHANNEL 2
Dual 30 Band Equalizer
With Feedback
Indicator System
FEEDBACK
INDICATION
FEEDBACK
INDICATION ON -20 -15 -10 -5 0 +8 +20
25Hz 31 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1K 1K25 1K6 2K 2K5 3K15 4K 5K 6K3 8K 10K 12K5 16K 20KHz
5
Rear Panel Introduction
11. The SEQ 302F has provisions for both XLR & TRS (Phono) output.
14. This switch is used to switch the Equalizer On/OFF.
Signal Output Connector:
Power On/Off Switch:
12. The SEQ 302F has both XLR & TRS (Phono) input connectors.
13. Plug the supplied cord into the power supply socket. (Before using the product, check if the
power supply is correct). If the fuse is broken, please replace with a fuse of the same type.
Signal Input Connector:
AC Cord & Fuse:
14
13
12
11
WARNING :
THIS UNIT MUST BE EARTHED.
KEEP WELL VENTILATED.
SERIAL NUMBER
FUSE : T 1AL/250V
240V~/50Hz, 50Watts
MADE IN P .R.C.
2
1
OUTPUT
2
1
INPUT
SEQ 302F
ON
OFF
POWER
12
3
12
3
How to use Feedback Function:
• If there is feedback in the system, the feedback detection LEDs indicate frequency ranges with the highest energy levels.
If you keep an eye on the LEDs while you play back your music (or during the sound check before a show), you can
easily identify those frequencies causing feedback. Similarly, increased signal levels on individual frequency bands
indicate a higher likelihood that feedback may occur.
• If feedback occures, pull down the respective faders whose LEDs are lit until the feedback subsides. Repeat this procedure
to eliminate other possible feedback frequencies.

3
5. Technical Specifications:
Input Impedance
Output Impedance
Bal: 12.7K Ω
Bal : 600 Ω
Input Output Connectors
Frequency Response
EQ Center Frequency
XLR & TRS
20Hz - 20 KHz
25Hz, 31Hz, 40Hz, 50Hz, 63Hz, 80Hz, 100Hz,
125Hz, 160Hz, 200Hz, 250Hz, 315Hz, 400Hz,
500Hz, 630Hz, 800Hz, 1KHz, 1.25KHz, 1.6KHz,
2KHz, 2.5KHz, 3.15KHz, 4KHz, 5KHz, 6.3KHz,
8KHz, 10KHz, 12.5KHz, 16KHz, 20KHz
Low Cut
Sub Woofer Frequency
EQ Cut/Boost
S/N Ratio
THD
Power Supply
Power Consumption
Dimensions (W x D x H)
Net Weight
63Hz, -3dB
63Hz - 315Hz
±12dB
> 90 dB
0.01%
230V AC (50 60Hz)
~
25W
485 x 170 x 90mm
3.15 Kg
• Leave all other faders in the middle position if there is no need for frequency correction.
• Do not touch other settings (mixer gain, amplifier volume..etc), and you will have a tremendous amount of headroom
available to you, without creating audible feedback.
• The brightness of LED's can be controlled by display Fader (Please see point 9).

6. Setup Diagram
SENSITIVITY
1.2V OFF ON
0.775V
LIMITER
PA 2.0
LOW-CUT
OFF ON
CH1/
BRIDGE
OUT
V1
CH2
OUT
FOR MONO OR BRIDGE MODE USE INPUT CH1.
WARRANTY VOIDS IF
SERIAL NO. IS MISSING
Output Connections
Stereo Mode
+1 = speaker +
-1 = speaker -
Mono Mode
Bridged Mode
CH1 only
+2 = speaker +
-2 = speaker -
Self Declaration-Conforming to
IS 616 : 2010, R-75000108
+8 +8 +8 +8 +8 +8 +8 +8 +8 +8 +8 [phone] -40 -40 -40 -40 -40
-12dB -12dB -12dB -12dB -12dB -12dB -12dB -12dB -12dB -12dB -12dB -12dB
-60 -60 -60 -60 -60 -60 -60 -60 -60 -60 -60 -60
-16 -16 -16 -16 -16 -16 -16 -16 -16 -16 -16 -16
+16 +16 +16 +16 +16 +16 +16 +16 +16 +16 +16 +16
-16 -16 -16 -16 -16 -16 -16 -16 -16 -16 -16 -16
+16 +16 +16 +16 +16 +16 +16 +16 +16 +16 +16 +16
LF LF LF LF LF LF LF LF LF LF LF LF
-16 -16 -16 -16 -16 -16 -16 -16 -16 -16 -16 -16
+16 +16 +16 +16 +16 +16 +16 +16 +16 +16 +16 +16
AUX1 AUX1 AUX1 AUX1 AUX1 AUX1 AUX1 AUX1 AUX1 AUX1 AUX1 AUX1
POST POST POST POST POST POST POST POST POST POST POST POST
AUX2 AUX2 AUX2 AUX2 AUX2 AUX2 AUX2 AUX2 AUX2 AUX2 AUX2 AUX2
PRE PRE PRE PRE PRE PRE PRE PRE PRE PRE PRE PRE
PAN PAN PA N PAN PA N PAN PAN PA N PAN PAN PA N PAN
L5 L5 L5 L5 L5 L5 L5 L5 L5 L5 L5 L55R 5R 5R 5R 5R 5R 5R 5R 5R 5R 5R 5R
ON ON ON ON ON ON ON ON ON ON ON
MUTE MUTE MUTE MUTE MUTE MUTE MUTE MUTE MUTE MUTE MUTE
+6 +6 +6 +6 +6 +6 +6 +6 +6 +6 +6
00000000000
8
8
8
8
8
8
8
8
8
8
8
123456789
10 11
-16 +16
LF
AUX1
EFX
POST
L5 5R
LEFT/
MONO
RIGHT
MIC
GAIN
-10 +60
+10 -20
LINE
GAIN
-16 +16
-16 +16
AUX2
PRE
BAL
EFX ON
ON
DELAY
MIN MAX
MIN MAX
FEEDBACK
DELAY
SELECTION
Delay 1
Delay 2
E-Delay
MONO
13 LEVEL LR
10
+5
0dB
-5
10
20
30
40
8
LROUTPUT
12
AUX SEND
AUX RETURN
LEFT RIGHT
PEAK
2
+1
0dB
-1
2
3
5
7
10
13
20
RETURN
LEVEL
55
PAN
L5 5R
0
L5 5R
0
SEND
LEVEL
55
AUX1 AUX2
MONO OUT
POWER
+48 PHANTOM
TAPE
RECORD
LR
PLAYBACK
6R MIN
PHONES
DIAMOND
Supreme 12
• Delay 1 : 80mSec - 330mSec
• Delay 2 : 390mSec - 340mSec
• E-Delay : 80mSec - 330mSec
000000000000
000000000000
000000000000
555555555555
5
5
555555555555
000000000000
0
CLIP CLIP CLIP CLIP CLIP CLIP CLIP CLIP CLIP CLIP CLIP
ON
MUTE
+6
0
8
12
CLIP
ON
MUTE
+6
0
8
13
CLIP
ON
MUTE
+6
0
8
CLIP
+6
0
8
EFX
WIRELESS
MICROPHONE
MICROPHONES
CD PLAYER
+12
0
-12
+12
0
-12
+12
0
-12
+12
0
-12
SEQ 302F
ON -20 -15 -10 -5 0 +8 +20
DISPLAY LEVEL
OFF
ON
DISPLAY LEVEL
IN
BYPASS
FREQUENCY
LF
CUT
EQ
BYPASS
LF
CUT
EQ
BYPASS
OFF
ON
IN
BYPASS
+6dB
0dB
8
0
-20
+20
+6dB
0dB
8
0
-20
+20
CHANNEL 1
CHANNEL 2
Dual 30 Band Equalizer
With Feedback
Indicator System
FEEDBACK
INDICATION
FEEDBACK
INDICATION ON -20 -15 -10 -5 0 +8 +20
25Hz 31 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1K 1K25 1K6 2K 2K5 3K15 4K 5K 6K3 8K 10K 12K5 16K 20KHz
WARNING :
THIS UNIT MUST BE EARTHED.
KEEP WELL VENTILATED.
SERIAL NUMBER
FUSE : T1AL/250V
240V~/50Hz, 50 Watts
MADE IN P .R.C.
2
1
OUTPUT
2
1
INPUT
SEQ 302F
ON
OFF
POWER
12
3
12
3
4

Rev001/SM SEQ 302F/AUGUST 2016
* Design and specification are subject to change without notice.
is a registered trademark of Audioplus in India. © Copyright Audioplus, 2008. All rights reserved. Any
unauthorised reproduction or use of logos, images or design elements is strictly prohibited by law. No part of the
compilation may be reproduced in any manner or translated without written permission.
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