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Identifies the product line as DPI Series Professional Power Amplifiers.
Indicates that this document is a preliminary user manual for the product.
Thanks the user for choosing the DPI series, highlighting its proprietary switching output stage (Class D).
Mentions the rugged steel chassis and conventional power supply with a toroidal transformer.
Introduces the EFL (Extended Feedback Loop) sensing technique, noting it requires user study.
Explains safety symbols indicating dangerous voltage and the presence of important instructions.
Emphasizes reading and retaining all safety and operation instructions for future reference.
Warns against using the unit near water sources and advises placement away from heat.
Advises on power cord routing, unplugging when unused, and preventing spills into the unit.
Lists conditions requiring unplugging and professional servicing, and user service limitations.
Covers plug safety, dust filter role, grounding, ventilation, and fanguard safety.
Highlights the switching class D output stage for power amplification.
Mentions a fully symmetrical, floating modulator for accuracy and channel separation.
Describes the open input architecture and the standard PIM-SIM1 input module.
Explains the instant recovery function, eliminating output signal stitching after clipping.
Details the EFL technique for loudspeaker terminal feedback, offering loudspeaker control.
Notes the defeatable clip limiter with selectable response time for signal management.
Lists protection against over-dissipation, short circuits, and DC offset at the output.
Describes output connectors including Neutrik Speakon and Phoenix screw terminals.
Mentions low flux toroidal transformer with thermal sensing and power line filtering.
Highlights the high efficiency cooling system with temperature-controlled fans.
Describes front-to-back airflow and the easy-to-clean front air filter.
Covers warnings about not opening the unit and preventing electric shock.
Warns against exposing the unit to rain or moisture to prevent fire or shock.
Includes notes on product specification compliance and potential interference.
Advises on polarized plug use with extension cords and mains connection safety.
Stresses the dust filter cover as an integral part of electrical safety provisions.
Mentions taking precautions to ensure grounding and mains polarization are not defeated.
Explains ventilation openings are for reliable operation and preventing overheating.
Emphasizes the fanguard's role in safety provisions and correct mounting.
Provides instructions on unpacking the amplifier and saving packaging materials.
Instructs to mount the fanguard on the unit as an integral part of safety provisions.
Details how to remove the fancover and clean/replace the air filter.
Identifies and describes the rear panel connectors and features.
Explains how to configure the amplifier using dipswitches for DUAL and BRIDGE modes.
Details the standard PIM-SIM1 module and its input connectors (XLR/phone jack).
Explains speaker connections for DUAL and BRIDGE modes, including impedance.
Describes using dipswitches to parallel CH1 and CH2 inputs, with a warning.
Details dipswitch settings for activating and setting the high pass filter frequency.
Explains the EFL sense inputs and the need for caution with sensitive components.
Provides details on XLR/phone jack receptacles and Phoenix screw terminals for inputs.
Explains speaker connections for DUAL and BRIDGE modes with impedance requirements.
Details dipswitch functions for parallel inputs, high pass filters, and CLIP LIMITER.
Explains the EFL feature and how sense inputs control feedback from loudspeaker terminals.
Provides diagrams for preferred and second option speaker cabling in stereo/parallel modes.
Instructs on using three-prong connectors with earth contact for mains connection.
Details the standard color code for mains cable conductors (earth, live, neutral).
Describes front panel controls and status LEDs (READY/PROTECT, SIGNAL, VOLT CLIP/LIMIT, TCL).
Explains the meaning of various status LEDs like READY/PROTECT, SIGNAL, and TCL.
Details the VOLT CLIP/LIMIT LED and how the limiter reduces gain to prevent distortion.
Explains the TCL LED indicating signal limiting due to heatsink temperature.
Describes the BRIDGE and SUPPLY OVL LEDs indicating configuration and power overload.
Mentions REMOTE and ACTIVE LEDs related to optional remote modules.
Recommends two-conductor shielded cable for input connections to minimize interference.
Warns against using ground lift adapters, as the chassis must remain connected to earth.
Provides guidance on experimenting with wiring to solve hum or buzz problems.
Explains pin 1 of input connectors connects to chassis ground for signal screening.
Addresses potential hum from poorly organized internal grounding and how to disconnect pin 1.
Offers diagrams for balanced and unbalanced floating and grounded connections.
Lists minimum output power per channel and in bridge mode for different impedance loads.
Details THD+N, SMPTE IM distortion, dynamic IM distortion, and frequency range.
Specifies large signal bandwidth and rise time for the amplifier's performance.
Provides damping factor (with EFL) and voltage gain specifications.
Lists noise interference levels and crosstalk between channels.
Details input impedance, CMRR, output DC offset, input/output connectors.
Specifies cooling method, mains voltage, and physical dimensions of the unit.
Lists net weight, shipping weight, and relevant safety/EMC standards.
Shows rack mount dimensions and front panel layout with connector labels.
Provides detailed measurements of the unit's width, height, and depth.
States the 2-year warranty period covering defects in components and workmanship.
Lists exclusions such as misuse, accident, neglect, and unauthorized alterations.
Explains Q4AUDIO's commitment to remedy defects via repair, replacement, or refund.
Provides instructions on how to obtain warranty service, including filling out a form.
Includes a disclaimer for damage to other products and reserves the right to change designs.
Fields for collecting owner and contact information for service requests.
Fields for product serial number, purchase details, and problem description.
Instructs users to explain the circumstances under which the problem occurred.
A section for users to detail any attempts made to resolve the issue.
Instructions on sending the service request form with the unit to the authorized dealer or factory.
Identifies the product line as DPI Series Professional Power Amplifiers.
Indicates that this document is a preliminary user manual for the product.
Thanks the user for choosing the DPI series, highlighting its proprietary switching output stage (Class D).
Mentions the rugged steel chassis and conventional power supply with a toroidal transformer.
Introduces the EFL (Extended Feedback Loop) sensing technique, noting it requires user study.
Explains safety symbols indicating dangerous voltage and the presence of important instructions.
Emphasizes reading and retaining all safety and operation instructions for future reference.
Warns against using the unit near water sources and advises placement away from heat.
Advises on power cord routing, unplugging when unused, and preventing spills into the unit.
Lists conditions requiring unplugging and professional servicing, and user service limitations.
Covers plug safety, dust filter role, grounding, ventilation, and fanguard safety.
Highlights the switching class D output stage for power amplification.
Mentions a fully symmetrical, floating modulator for accuracy and channel separation.
Describes the open input architecture and the standard PIM-SIM1 input module.
Explains the instant recovery function, eliminating output signal stitching after clipping.
Details the EFL technique for loudspeaker terminal feedback, offering loudspeaker control.
Notes the defeatable clip limiter with selectable response time for signal management.
Lists protection against over-dissipation, short circuits, and DC offset at the output.
Describes output connectors including Neutrik Speakon and Phoenix screw terminals.
Mentions low flux toroidal transformer with thermal sensing and power line filtering.
Highlights the high efficiency cooling system with temperature-controlled fans.
Describes front-to-back airflow and the easy-to-clean front air filter.
Covers warnings about not opening the unit and preventing electric shock.
Warns against exposing the unit to rain or moisture to prevent fire or shock.
Includes notes on product specification compliance and potential interference.
Advises on polarized plug use with extension cords and mains connection safety.
Stresses the dust filter cover as an integral part of electrical safety provisions.
Mentions taking precautions to ensure grounding and mains polarization are not defeated.
Explains ventilation openings are for reliable operation and preventing overheating.
Emphasizes the fanguard's role in safety provisions and correct mounting.
Provides instructions on unpacking the amplifier and saving packaging materials.
Instructs to mount the fanguard on the unit as an integral part of safety provisions.
Details how to remove the fancover and clean/replace the air filter.
Identifies and describes the rear panel connectors and features.
Explains how to configure the amplifier using dipswitches for DUAL and BRIDGE modes.
Details the standard PIM-SIM1 module and its input connectors (XLR/phone jack).
Explains speaker connections for DUAL and BRIDGE modes, including impedance.
Describes using dipswitches to parallel CH1 and CH2 inputs, with a warning.
Details dipswitch settings for activating and setting the high pass filter frequency.
Explains the EFL sense inputs and the need for caution with sensitive components.
Provides details on XLR/phone jack receptacles and Phoenix screw terminals for inputs.
Explains speaker connections for DUAL and BRIDGE modes with impedance requirements.
Details dipswitch functions for parallel inputs, high pass filters, and CLIP LIMITER.
Explains the EFL feature and how sense inputs control feedback from loudspeaker terminals.
Provides diagrams for preferred and second option speaker cabling in stereo/parallel modes.
Instructs on using three-prong connectors with earth contact for mains connection.
Details the standard color code for mains cable conductors (earth, live, neutral).
Describes front panel controls and status LEDs (READY/PROTECT, SIGNAL, VOLT CLIP/LIMIT, TCL).
Explains the meaning of various status LEDs like READY/PROTECT, SIGNAL, and TCL.
Details the VOLT CLIP/LIMIT LED and how the limiter reduces gain to prevent distortion.
Explains the TCL LED indicating signal limiting due to heatsink temperature.
Describes the BRIDGE and SUPPLY OVL LEDs indicating configuration and power overload.
Mentions REMOTE and ACTIVE LEDs related to optional remote modules.
Recommends two-conductor shielded cable for input connections to minimize interference.
Warns against using ground lift adapters, as the chassis must remain connected to earth.
Provides guidance on experimenting with wiring to solve hum or buzz problems.
Explains pin 1 of input connectors connects to chassis ground for signal screening.
Addresses potential hum from poorly organized internal grounding and how to disconnect pin 1.
Offers diagrams for balanced and unbalanced floating and grounded connections.
Lists minimum output power per channel and in bridge mode for different impedance loads.
Details THD+N, SMPTE IM distortion, dynamic IM distortion, and frequency range.
Specifies large signal bandwidth and rise time for the amplifier's performance.
Provides damping factor (with EFL) and voltage gain specifications.
Lists noise interference levels and crosstalk between channels.
Details input impedance, CMRR, output DC offset, input/output connectors.
Specifies cooling method, mains voltage, and physical dimensions of the unit.
Lists net weight, shipping weight, and relevant safety/EMC standards.
Shows rack mount dimensions and front panel layout with connector labels.
Provides detailed measurements of the unit's width, height, and depth.
States the 2-year warranty period covering defects in components and workmanship.
Lists exclusions such as misuse, accident, neglect, and unauthorized alterations.
Explains Q4AUDIO's commitment to remedy defects via repair, replacement, or refund.
Provides instructions on how to obtain warranty service, including filling out a form.
Includes a disclaimer for damage to other products and reserves the right to change designs.
Fields for collecting owner and contact information for service requests.
Fields for product serial number, purchase details, and problem description.
Instructs users to explain the circumstances under which the problem occurred.
A section for users to detail any attempts made to resolve the issue.
Instructions on sending the service request form with the unit to the authorized dealer or factory.
General| Frequency Range | 20Hz - 20kHz |
|---|---|
| THD | < 0.1% |
| Termination Impedance | 4-8 Ohms |
| Input Mode | RCA |
| Output Mode | Speaker terminals |
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