Related Manuals for Miad Audio PS230
Summary of Contents for Miad Audio PS230
- Page 1 Operator’s Manual Version 1.7 LCPQ 4040 Discrete 4-band EQ PS230 External Power Supply...
- Page 2 GOUNELAS reserves the right to change the features and specifications described herein without notice or obligation. MIAD AUDIO MICHAIL GOUNELAS cannot be held responsible for any loss or damage arising directly or indirectly from any error or omission in this manual.
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Page 3: Table Of Contents
Table of Contents LCPQ 4040 Overview Features Front Panel Rear Panel PS 230 Overview Features Front Panel Rear Panel Troubleshooting Specifications LCPQ 4040 Technical Specifications LCPQ 4040 Dimensions PS 230 Technical Specifications PS 230 Dimensions Appendix Warranty Registration Product Warranty Block Diagram Frequency Response EQ Response Curves... - Page 4 • Use only attachments/accessories specified by the manufacturer. • Refer all service to qualified personnel. • MIAD AUDIO does not accept liability for damage caused by maintenance, repair or modification by unauthorized personnel. • Do NOT modify this unit, alterations may affect performance, safety and/or international compliance standards.
- Page 5 POWER SAFETY • Do not defeat the safety purpose of the polarized or grounding type AC plug. • Refer to the rating label on rear of the PS230 unit and always use a suitable mains cord. • Connect only to an AC power source that contains a protective earthing (PE) conductor.
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Page 6: Lcpq 4040
LCPQ 4040 1.1 Overview The LCPQ 4040 is a transformer balanced, high performance all-discrete equalizer with four passive RLC sections in cascade configuration. Each band has a variable level control ranging from -12dB to +12dB (or -6dB to +6dB). The four bands of equalization offer selectable Shelving/ Bell on the first and fourth band and selectable HiQ/ LowQ on the second and third band. -
Page 7: Front Panel
1.3 Front Panel SHELVING/ BELL SWITCH – This switch toggles between Shelving and Bell shape. When the switch is pressed, the Bell shape is active. OFF – When the FREQ. rotary switch is in the OFF position, the band is not engaged (i.e. the filter circuit and the LEVEL control are inactive). However, the audio signal still travels through the discrete circuit and the audio transformers. -
Page 8: Rear Panel
1.4 Rear Panel 6-PIN DC POWER SUPPLY INPUT – This input allows interconnection of the external supply (PS 230) required for the unit to operate. A 2-meter power supply cable is supplied with every unit. Pin out is as follows: Pin 1= Chassis Ground Pin 2= -28V (audio circuit) Pin 3= +28V (audio circuit) Pin 4= +24V (relay bypass system and bypass indicator) -
Page 9: Ps 230
PS 230 2.1 Overview The PS 230 is a 3-rail linear power supply capable of powering two LCPQ 4040 units, housed in a robust enclosure. The unit provides ±28V DC for the audio circuit and +24V DC for the relay bypass system and the bypass indicator (LED). In order to cut the cost (and for the shake of simplicity), a lot of audio euquipment use a common power rail for the audio circuit and for other functions such as relays, LEDs, lamps, etc. -
Page 10: Front Panel
2.3 Front Panel AC POWER SWITCH – This switch turns the unit ON and OFF. Make sure you do not plug (or unplug) the 6-pin DC cable between the power supply and the EQ unit while the unit (PS 230) is ON. Hot-plugging (i.e connecting the DC cable while the unit is powered on) may damage your equipment. -
Page 11: Rear Panel
2.4 Rear Panel 6-PIN DC POWER SUPPLY OUTPUTS – This output allows interconnection of the LCPQ 4040 unit. Up to two EQs can be connected to the power supply. Pin out is as follows: Pin 1= Chassis Ground Pin 2= -28V (audio circuit) Pin 3= +28V (audio circuit) Pin 4= +24V (relay bypass system and bypass indicator) Pin 5= 0V (reference for +24V) -
Page 12: Troubleshooting
Troubleshooting In the event of unit operational failure, contact MIAD AUDIO at info@miad.eu or for more contact information, check our website (www.miad.eu). Before contacting us, please be prepared to describe in detail the exact problem that the unit is experiencing. -
Page 13: Appendix
2. The warranty does not cover any of the following: damage caused by the user; spillages or moisture; neglect, abuse or misuse, including but not limited to the failure to use the MIAD AUDIO product for its normal purpose in accordance with the manufacturer's instructions for usage, failure to properly maintain the MIAD... - Page 14 MIAD AUDIO is not responsible for damage resulting from improper packing and/or mishandling by a shipper. 7. MIAD AUDIO reserves the right to inspect any products that may be the subject of any warranty claims before repair or replacement is carried out. Final determination...
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Page 15: Block Diagram
5.3 Block Diagram... -
Page 16: Frequency Response
5.4 Frequency Response Frequency Range: 20Hz to 20kHz / Magnitude Range: -1.0dB to +1.0dB (All bands ‘ON’ at unity gain) 5.5 EQ Response Curves The graphs below demonstrate some of the measured response curves for each band. BAND 1 BAND 2 Top Curve: Shelv. – 12dB Boost @ 45Hz (20Hz – 40kHz) Top Curve: Low Q - 12dB Boost @ 560Hz (20Hz –... -
Page 17: Recall Sheet
LCPQ 4040 - RECALL SHEET ARTIST _______________________________ PROJECT _______________________________ DATE __________________ TRACK ________________________ INSTRUMENT __________________________ ENGINEER _______________________ NOTES __________________________________________________________________________________________________________ ARTIST _______________________________ PROJECT _______________________________ DATE __________________ TRACK ________________________ INSTRUMENT __________________________ ENGINEER _______________________ NOTES __________________________________________________________________________________________________________ ARTIST _______________________________ PROJECT _______________________________ DATE __________________ TRACK ________________________ INSTRUMENT __________________________ ENGINEER _______________________ NOTES __________________________________________________________________________________________________________...
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