The HPA M822FX-USB / M1022-USB is a professional stereo compact mixer designed for a wide range of audio applications, from live performance to home recording. It offers a balance of operability, functionality, and ease of use, making it suitable for both beginners and experienced users.
Function Description:
The mixer features a versatile input section, including 2 mono channels (M822FX / M822FX-USB / M1022 / M1022-USB) and either 3 stereo channels (M822FX / M822FX-USB) or 4 stereo channels (M1022 / M1022-USB). These inputs can accommodate various sound sources such as microphones, cassette decks, electronic guitars, and organs.
Each mono channel is equipped with a 3-band equalizer for precise tone shaping, offering ±15dB control for high (HF) and low (LF) frequencies, and ±12dB for mid (MF) frequencies. A 75Hz high-pass filter (HPF) can be engaged to cut frequencies below 75Hz, reducing unwanted low-end rumble. The mono channels also include an insert I/O jack, allowing for the integration of external effects like graphic equalizers, compressors, or noise filters. Phantom power (+48V) is available for condenser microphones, ensuring compatibility with a wide range of professional microphones.
The mixer incorporates a built-in 24-bit DSP (Digital Signal Processor) with 100 selectable presets, including high-quality studio-grade effects such as Reverb, Delay, and Chorus. These effects can be applied to individual channels via the EFX send controls.
For monitoring and external equipment integration, the mixer provides AUX RETURN and 2 AUX SEND functions. The main L/R outputs are available for connecting to power amplifiers or powered speakers, while control room outputs and a headphone jack allow for flexible monitoring. A TAPE IN section with RCA jacks enables direct connection of CD or DAT players for monitoring, and REC OUT jacks send pre-fader signals for recording.
The M822FX-USB and M1022-USB models feature a built-in stereo USB audio interface, allowing for direct recording and playback with a PC or MAC. This USB functionality is compliant with standard audio interface controls in both Windows and MAC OS, simplifying setup and integration with digital recording software. The USB I/O offers powerful routing options, enabling users to record the main L/R mix or create an independent stereo mix from the AUX1 and AUX2 outputs.
Important Technical Specifications:
- Maximum Output Level (0.5% T.H.D at 1kHz): +20dB (MAIN L/R), +20dB (AUX1, EFX, CTRL ROOM), +20dB (INSERT), More than 100mW (HEADPHONES) @33Ω
- T.H.D: <0.1% @+14dB 20Hz ~ 20kHz (MAIN L/R, AUX SEND, EFX SEND, CTRL ROOM)
- Frequency Response: 20Hz ~ 20kHz, +1/-2dB (MIX L/R, AUX SEND, EFX SEND, CTRL ROOM)
- Hum and Noise (Average, 20kHz LPF Rs=150Ω): -127dB equivalent input noise, -95dB residual noise (MAIN L/R, AUX/EFX SEND, CTRL ROOM OUT), -88dB (MAIN L/R, ALT 3/4, AUX/EFX send, CTRL ROOM OUT)
- Input Channel Equalization:
- HIGH: 12kHz shelving, ±15dB
- MID: 2.5kHz peaking, ±12dB
- LOW: 80Hz shelving, ±15dB
- Phantom Power: +48V DC
- Digital Effects: 100 selectable presets (Reverb, Delay, Chorus, Flange, Echo, etc.)
- USB Audio Interface: Stereo input/output, USB compliant
- Power Source/Consumption:
- USA / Canada: 120Vac / 60Hz / PA-M822 25W
- England / Australia: 240Vac / 50Hz / PA-M822 25W
- Korea: 220Vac / 60Hz / PA-M822 25W
- Europe: 230Vac / 50Hz / PA-M822 25W
- Weight: 2.4kg
- Dimensions (WxDxH): 295 x 249 x 75 mm
- CH Mic: 4KΩ Input Impedance, 50~600Ω Nominal Impedance, -50dB Rated Input Level, XLR 3-31 Type Balanced
- CH Line: 10KΩ Input Impedance, 600Ω Nominal Impedance, -30dB Rated Input Level, Phone Jack (TRS) T=Hot R=Cold S=GND
- Stereo Input Mic: 3KΩ Input Impedance, 600Ω Nominal Impedance, -44dB Rated Input Level, XLR 3-31 Type Balanced
- Stereo Input Line: 5KΩ Input Impedance, 600Ω Nominal Impedance, -20dB Rated Input Level, Unbalanced Phone Jack
- Aux Return Insert Input: 10KΩ Input Impedance, 600Ω Nominal Impedance, +4dB Rated Input Level, Unbalanced Phone Jack
- Mono Channel Insert Input: 10KΩ Input Impedance, 600Ω Nominal Impedance, 0dB Rated Input Level, Phone Jack (TRS) T=Out R=In S=GND
- Tape In: 10KΩ Input Impedance, 600Ω Nominal Impedance, -10dBV Rated Input Level, RCA pin Jack
Output Connector Specifications:
- MAIN: 75Ω Output Impedance, 10KΩ Nominal Impedance, +4dB Rated Output Level, Unbalanced Phone Jack
- CTRL Room Out: 75Ω Output Impedance, 10KΩ Nominal Impedance, +4dB Rated Output Level, Unbalanced Phone Jack
- Aux/Efx Send: 75Ω Output Impedance, 600Ω Nominal Impedance, +4dB Rated Output Level, Unbalanced Phone Jack
- Mono channel insert output: 100Ω Output Impedance, 10KΩ Nominal Impedance, 0dB Rated Output Level, Phone Jack (TRS) T=Out R=In S=GND
- Rec Out: 600Ω Output Impedance, 10KΩ Nominal Impedance, -10dBV Rated Output Level, RCA pin Jack
- Phones Out: 100Ω Output Impedance, 33Ω Nominal Impedance, 3mW Rated Output Level, Stereo Phone Jack
Usage Features:
- Peak LED Indicators: Provide visual feedback on input signal levels, lighting up when the signal reaches 5dB below clipping.
- TRIM Control: Adjusts input sensitivity for optimal signal-to-noise ratio and dynamic range.
- PAN/BAL Control: Pans mono channel signals across the stereo field and adjusts the L/R balance for stereo channels.
- Channel Level Volume: Controls the main level of each channel sent to the master mixing and effect buses.
- DSP Program Display and Select Switch: Allows users to easily browse and select from the 100 built-in digital effects.
- DSP ON/OFF Switch: Toggles the internal digital effects on or off.
- EFX RTN Volume: Adjusts the level of the internal digital effect signal sent to the main bus.
- CTRL ROOM/PHONES Control: Manages the output level to the PHONES jack and CTRL ROOM L/R jacks.
- MAIN L/R Master Volume: Adjusts the final level of the combined signals from all channels.
- TAPE IN Control: Adjusts the playback signal level from the TAPE IN RCA jacks.
- Output Level Meter: A 10-segment LED display shows the continuous output level of the main L/R, with 0 LED indicating +4dB output.
- Foot Switch Jack (M822FX/M822FX-USB only): Allows for remote toggling of digital effects ON and OFF.
- USB I/O (M822FX-USB / M1022-USB only): Seamless integration with computers for recording and playback, with flexible routing options for the main mix or auxiliary mixes.
Maintenance Features:
- Unpacking and Setup: Instructions emphasize careful unpacking and retention of packing materials for potential service returns. It also advises against placing the unit near heat sources, in direct sunlight, or in excessively humid/dusty locations.
- Safety Warnings: Comprehensive safety instructions are provided, covering topics such as proper power supply, ventilation, cleaning, and avoiding exposure to moisture or liquids.
- Qualified Personnel for Servicing: Users are advised to refer all servicing to qualified personnel, especially if the apparatus has been damaged or is not operating normally.
- Wiring Practices: Recommendations for using good quality twin-screened audio cables and proper earthing to prevent hum and interference.
- Warranty Information: Details on how to obtain specific warranty information and locate authorized service centers, as warranty terms and conditions may vary by country.
- Schematic and Parts List: Available by contacting the warranty provider, which can be useful for authorized technicians during repairs.
- Power Disconnection: Emphasizes locating the apparatus near a power socket for quick disconnection in emergencies.
- USB Driver Installation: For USB compatible models, the manual provides clear instructions for driver installation on Windows XP and MAC OS X, ensuring smooth setup.
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