User manual Avalon Design AD2022 Dual Mono Pure Class A AD2022-BL
Operating instructions and pdf manual for use - Avalon Design AD2022 Dual Mono Pure Class A AD2022-BL User manual, User manual Avalon Design AD2022 Dual Mono Pure Class A AD2022-BL, Avalon, Design, AD2022, Dual, Mono, Pure, Class, A, AD2022-BL,
User manual for Avalon Design AD2022 Dual Mono Pure Class A AD2022-BL
Manufacturer: Avalon Design
Basic description and contents of package
Product classification: Pro Audio - Recording - Microphone Preamps
Safety instructions
Startup and operation of the microphone preamps
Tips for setting up your Avalon Design
Settings and expert assistance
Contact Avalon Design service
Troubleshooting
Warranty information
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User manual for the Avalon Design AD2022 Dual Mono Pure Class A AD2022-BL
The user manual for the Avalon Design AD2022 Dual Mono Pure Class A AD2022-BL provides
necessary instructions for the proper use of the product Pro Audio - Recording - Microphone Preamps.
The AD2022 Dual Mono Symmetrical Pure Class A Preamplifier from Avalon Design includes the original sonic capabilities and transparency of M2, M22, and M5 Preamplifiers and several additional features including selectable microphone source loading for optimized cable/mic matching, improved, high-voltage Class A-regulated power supplies, two high Z instrument inputs, variable-passive high pass filter, polytetrafluoroethylene / silver wiring, and double-plated circuit boards for superior low level signal transfer.
The AD2022 Preamplifier incorporates an advanced, high-performance microphone transformer. Split low-ratio primary windings are carefully combined within a custom mu-metal core for extended smooth frequency response and very low distortion.
Sealer silver relays are used for minimal signal invasion. Input signal selector, high pass filter, polarity-phase reverse, 48V power, and the 20 dB input attenuator utilize local, sealed relay operation. A variable passive high pass filter provides a minimum phase shift design while eliminating low frequency rumble, wind noise, and mechanical vibration at sub sonic frequencies.
Two 100% discrete, high-voltage, symmetrical Pure Class A signal amplifiers are utilized per channel. The first operates in a cascaded-cascode FET configuration, while the second stage amplifier is fully bipolar. The twin amplifiers share the total available gain requirement. This shared architecture increases high level headroom capability, improves transient response, and doubles the internal bandwidth of the high performance pure Class A signal amplifiers.
The high-current, DC-coupled, discrete Class A amplifiers are utilized for the output drive interface with 36 dB capability into all known loads. Two large, high-quality analog VU meters indicate accurate signal readings, while bi-color LEDs offer peak indication at 0 and 20 dB.
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Additional parameters of the Avalon Design AD2022 Dual Mono Pure Class A AD2022-BL:
Topology
Circuit: Twin cascode FET and bipolar low level signal amplifiers, high-voltage, 100% discrete, symmetrical Pure Class A
Input
Type and Load: Transformer balanced low ratio, 50, 150, 600, and 1,500 Ω input load selection
Mic
Maximum Level: 36 dB balanced XLR 2-pin hot (with -20 dB passive attenuator)
Maximum Level
Instrument: 18 dB at 100 kΩ instrument input level, standard mono 1/4" jack
Input Attenuator
-20 dB resistive pre transformer primary, sealed silver relay
Phantom Power
48 V regulated 50 mA capability, sealed silver relay
Filter
High Pass Filter: Passive, variable from 30 to 185 Hz @ 6 dB/octave, sealed silver relay
Polarity
Reverse: Sealed silver relay on microphone input
Gain Range
Input: 20 to 64 dB (in 4 dB steps) Output: ±3 dB variable conductive plastic potentiometer
Output Level
Maximum: 36 dB balanced 600 Ω, DC coupled, discrete symmetrical Pure Class A
Output Type
XLR connector, 2-pin hot
Noise
-126 dB 150 Ω (EIN unweighted) -102 dB (20 kHz unweighted)
Distortion
THD, IMD: 0.05% nominal
Frequency Response
-3 dB: 1 Hz to 12O kHz transformer limit
Bandwidth
System: DC to 1 MHz
Meter
High quality, illuminated analog VU meter (0 dB equals to 4 dB) (output meter) Bi-color LEDs 0 and 20 dB peak detection circuit (peak meter)
Power Supply
B2T: External toroidal 100 to 240 VAC, 50 to 60 Hz selectable, 150 W maximum
Power supply included.
Dimensions
Preamplifier Unit: 19.00 x 12.00 x 3.50" (482.60 x 304.80 x 88.90 mm) B2T Power Supply: 5.00 x 7.00 x 3.25" (127.00 x 177.80 x 82.55 mm)
Weight
Preamplifier Unit: 15.0 lb (6.8 kg) B2T Power Supply: 7.0 lb (3.1 kg)
The user manual for the Avalon Design AD2022 Dual Mono Pure Class A AD2022-BL can be downloaded in .pdf
format if it did not come with your new microphone preamps, although the seller is
required to supply one. It is also quite common that customers throw out
the user manual with the box, or put the CD away somewhere and then can’t find it.
That’s why we and other Avalon Design users keep a unique electronic library
for Avalon Design microphone preampss,
where you can use our link to download the user manual for the Avalon Design AD2022 Dual Mono Pure Class A AD2022-BL.
The user manual lists all of the functions of the Avalon Design AD2022 Dual Mono Pure Class A AD2022-BL,
all the basic and advanced features and tells you how to use the microphone preamps.
The manual also provides troubleshooting for common problems. Even greater
detail is provided by the service manual, which is not typically shipped with the product,
but which can often be downloaded from Avalon Design service.
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to download a user manual or service manual, ideally in .pdf format. These pages
are created by you – users of the Avalon Design AD2022 Dual Mono Pure Class A AD2022-BL. User manuals are also
available on the Avalon Design website under Pro Audio - Recording - Microphone Preamps.
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