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Related Manuals for Inter-m EQ-2231A
Summary of Contents for Inter-m EQ-2231A
- Page 1 Operation Manual Dual 31-Band Graphic Equalizer EQ-2231A...
- Page 2 DUAL 31- BAND GRAPHIC EQUALIZER Welcome Welcome A personal welcome to you from the management and employees of Inter-M All of the co-workers here at Inter-M are dedicated to providing excellent products with inherently good value, and we are delighted you have purchased one of our products. We sincerely trust this product will provide years of satisfactory service, but if anything is not to your complete satisfaction, we will endeavor to make things right.
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Page 3: Table Of Contents
Features ............................4 Accessories.............................4 Front Panel ............................5 Rear Panel ............................7 Applications ............................8 Operation ............................9 Treating Feedback ...........................9 System Tuning..........................10 Troubleshooting ..........................11 Assistance.............................11 Block Diagram ..........................12 Specifications ..........................13 Service Procedures............................15 Schematic .............................15 Parts List ............................15 Variations and Options .......................15 Warranty ............................15 EQ-2231A... -
Page 4: Unpacking
DUAL 31- BAND GRAPHIC EQUALIZER Unpacking Unpacking Although your EQ-2231A is neither complicated nor difficult to operate, we recommend you take a few minutes to read this brief manual and familiarize yourself with the important information regarding product features, setup and operation. -
Page 5: Short Form Instructions
8. The product is ready for operation. Slowly increase the LEVEL slider to the desired operating level without exceeding “0”, then make other adjustments as necessary. 9. Operate the product and the system in a manner which DOES NOT illuminate the PEAK warning indicator. EQ-2231A... -
Page 6: Features
- Rack Ears for permanent installation in a standard 19” (rack mount width) enclosure. - Detachable AC power cord. - DC 24V power input. Accessories One detachable AC power cord and EURO BLOCKS are provided for use with this product. EQ-2231A... -
Page 7: Front Panel
CUT ONLY graphics. Usually -12dB of attenuation is sufficient. However the RANGE switch can be employed to provide up to -24dB of attenuation if more than -12dB is needed. EQ-2231A... - Page 8 The position of this switch determines whether the power is ON or OFF. In the OFF position, the input(s) are hard bypassed to the output(s) to allow the signal to pass through unaffected as it does in BYPASS. 9. POWER INDICATOR Display the power ON/OFF. EQ-2231A...
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Page 9: Rear Panel
XLR output connector. 7. GROUND LIFT SWITCH This switch provides connection or disconnection of the equalizer ground to AC “earth” ground to prevent noise from ground loops. Under most circumstances, this switch should be set to FRAME position. EQ-2231A... -
Page 10: Applications
DUAL 31- BAND GRAPHIC EQUALIZER Applications Applications EQ-2231A... -
Page 11: Operation
4. When finished, all but a few of the sliders will be at the “0” position. The few that were used to treat feedback will be at approximately the -2dB or -3dB position. 5. Document your settings using the “Notes” page at the back of this manual. This will be useful in the vent that the settings are inadvertently altered. EQ-2231A... -
Page 12: System Tuning
3. Make the necessary adjustments remembering two important items. a. Proper equalization is achieved with minimal equalization. b. Better to cut than to boost. Cut excessive frequencies rather than boost weak frequencies. 4. Document your settings. EQ-2231A... -
Page 13: Troubleshooting
Probable cause#2: Too much boost is occurring due the position of the sliders (above “0”). Probable cause#3: Incorrect or overdriven input signal being received from another product. Be sure that this product is only receiving one input signal per channel, XLR or euroblock, not both. EQ-2231A... -
Page 14: Block Diagram
DUAL 31- BAND GRAPHIC EQUALIZER Block Diagram Block Diagram EQ-2231A... -
Page 15: Specifications
DUAL 31- BAND GRAPHIC EQUALIZER Specifications Specifications EQ-2231A Input Sensitivity / Impedance 4dBu/>10k , BAL (0dBu=0.775V) Output Level / Impedance 4dBu/600 , BAL (0dBu=0.775V) Total Harmonic Distortion Less than 0.02% (INPUT 1kHz, 4dBu, <80kHz FILTER, +20dBu) Frequency Response 20Hz~20kHz (±1dB) - Page 16 DUAL 31- BAND GRAPHIC EQUALIZER DIMENSIONS 440.5 EQ-2231A...
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Page 17: Service
To obtain specific warranty information and available service locations contact Inter-M directly or the authorized Inter-M Distributor for your specific country or region. EQ-2231A... - Page 18 NOTE...
- Page 19 Inter-M, Ltd. (Korea) began operations in 1983. Since then, Inter-M has grown to become one of the largest manufacturers of professional audio and commercial sound electronics equipment in the world. Inter-M has gained worldwide recognition for its own branded products, as well as private label manufacturing of electronics sold under other names (OEM).
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