Studiomaster SEQ 152 User manual

I N S T R U C T I O N M A N U A L
SEQ 152
Thank you for purchasing the Studiomaster Professional SEQ 152, Dual 15-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.
1. Introduction
Features at a Glance:
• Professional Dual 15-Band stereo graphic equalizer with Constant Q factor.
• Range setting switchable between 6dB/15dB to give a gradual variation as required.
• High Quality Double Sided PCB made using Advanced SMT Technology ensure great reliability.
• Durable & Accurate 20mm Fader • Convenient Ground Lift Switch on the Rear Panel.
• Balanced & Unbalanced I/O Connectors. • Sleek 1 U, 19” inch rack mountable design.
1. ..............................................................................................................Introduction
2. ..............................................................................................................Safety Instructions
3. ..............................................................................................................Operation
4. ..............................................................................................................Technical Specifications
5. ..............................................................................................................Setup Diagrams
Professional Stereo Graphic Equalizer

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2. Safety Instructions
CAUTION: To reduce risk of electrical shock, do not remove the cover.
There are no serviceable parts inside the device. Maintenance and
service operations are only to be carried out by authorized dealers.
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.
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.
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.
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 not operate properly.
• If the product is damaged due to it being dropped.
3. Operation
Front Panel Introduction
NOTE: Channel 1 and 2 are identical.
1. Power Switch: This knob is used to switch the equalizer On/Off.
2. Boost / Cut Fader: This fader is used to boost or cut a dedicated
frequency.
a. Moving the fader upward will boost frequency up to +6dB or +15dB.
b. Moving the fader downward will cut frequency up to -6dB or -15dB.
12
0
CLIP
6dB
EQ IN
30Hz
LOW
CUT
㊣
15dB
OUT
OFF
㊣
+12
B
d
8
-20dB LEVEL
3
8910
4567

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3. CLIP Indicator: The LED flash lights to indicate that the signal is clipping, please reduce gain level till the LED stops glowing.
4. 6dB or 15dB Range Mode Selector: This knob is used to switch between ±6dB and ±15dB Range Mode. When the
knob is in the “pressed” position the ±6dB range mode is active, & when the knob is in the “release” position the ±15dB
range mode is active.
5. 6dB or 15dB Range Mode Indicator: These LED's indicate the status of 6dB or 15dB Range Mode.
6. EQ In/Out Switch: This knob is used to activate the EQ In/Out mode. EQ Out means that the effect of the EQ is bypassed.
When the knob is in the “pressed” position the EQ Out mode is active, & when the knob is in the “release” position the EQ
IN mode is active. (EQ Out is also be referred as Bypass feature commonly)
7. EQ Status LED: This LED lights up when the EQ Out mode is in operation. EQ Out indicates that the EQ is bypassed.
8. Low Cut: This knob is used to cut / attenuate signals below 30Hz. The Low Cut is activated when the button is in
“pressed” position.
9. Low Cut LED: This LED lights up when the Low Cut mode is in operation.
10. Output Level: This knob is used to control the master output from the equalizer.
NOTE: Channel 1 and 2 are identical.
11. Signal Input Connector: The SEQ 152 has both XLR & TRS (Phono) input connectors.
12. Signal Output Connector: The SEQ 152 has provisions for both XLR & TRS (Phono) output.
13. Ground or Lift: The Ground Lift switch eliminates unwanted hums and buzzes by interrupting ground loops between
equipment. You can use the provided switch change the two modes.
14. AC Cord & Fuse: 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.
Rear Panel Introduction
Input Impedance
Output Impedance
Input Output Connectors
Frequency Response
EQ Center Frequency
Low Cut
S/N Ratio
THD
Power Supply
Power Consumption
Dimensions (WxDxH)
Weight
Unbal: 10 K Ohms, Bal: 20 K Ohms
Unbal: 300 K Ohms, Bal: 150 K Ohms
XLR & TRS
20Hz - 20 KHz
25 Hz, 40 Hz, 63 Hz, 100 Hz, 160 Hz, 250 Hz, 400 Hz, 630Hz, 1KHz, 1.6 Khz,
2.5 KHz, 4 KHz, 6.3 KHz, 10 KHz, 16 KHz.
Below 30Hz, -20dB
> 90 dB
0.05%
230 V AC (50~60Hz)
20W
483 x 170 x 44.5mm
2.90 Kg’s
4. Technical Specification:
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