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User Manual for Heritage Audio '73 Junior API 500 Series Microphone Preamplifier Module Click to enlarge the picture
Contents of the user manual for the Heritage Audio '73 Junior API 500
- Product category: Microphone Preamps Heritage Audio
- Brand: Heritage Audio
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Heritage Audio Microphone Preamps
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User manual for the Heritage Audio '73 Junior API 500 contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Heritage Audio product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Heritage Audio user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Heritage Audio product will considerably shorten its lifespan!
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Product description The Heritage Audio '73 Junior API 500 Series Microphone Preamplifier Module is a 1U 500 series compatible 80 dB microphone and 10 dB line recording reproduction module based on the vintage 1073 designed by Rupert Neve. The remake is intended for recording engineers who want the classic Neve sound but do not need the equalizer functionality of the original module.
Using Styroflex and tantalum capacitors, the designers were able to fit all three 1073 discrete component Class A preamplifier gain stages in 1U of an API 500 Series lunchbox module.
The preamplifier supports selectable HI-LO minimum balanced and floating input impedances that accommodate a range of microphone types including vintage ribbons. You can also switch the module into line mode to re-amplify pre-recorded tracks and add color to a mix. Plugging in a mono 1/4" input into the DI port on the front of the unit automatically switches the module from MIC to DI mode. A discrete component Class A 3rd order 80 Hz high-pass filter with an 18 dB per octave slope has been added for recording sources without the effects of low-frequency coloration. An output control knob is included to prevent overloading the preamplifier.
The unit is powered by a +24V slow turn on power regulator that takes approximately 20 seconds to reach full voltage. This design improves the overall operation of your lunchbox PSU and makes the unit independent from the other modules in the lunchbox. To achieve the classic feel of the original 1073, the unit is constructed with Marconi-style knobs and vintage engraved pushbuttons. UPC: 639713908244 In the Box Heritage Audio '73 Junior API 500 Series Microphone Preamplifier Module Limited 1-Year Warranty Table of Contents
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Technical parametersHeritage Audio 73 JR Specs | Input Impedance | Microphone
HI: 1200 Ω minimum
LO: 300 Ω minimum
Line: 10 kΩ bridging, Carnhill transformer balanced and floating
DI: Greater than 2 MΩ, unbalanced | | Output Impedance | Less than 75 Ω,
Transformer balanced and floating to drive a load of 600 Ω | | Maximum Output | Greater than +26 dBm into 600 Ω | | THD | Less than 0.025% at 1,000 Hz
Less than 0.05% at 100 Hz | | Frequency Response | 20 Hz (+0.3 dB) to 20,000 Hz (-0.2 dB) | | Maximum Gain | Slightly greater than 80 dB | | Noise | Less than -100 dBm | | Power Consumption | 88 mA per rail at ±16 VDC | | Dimensions (W x D x H) | 1.50 x 6.89 x 5.32" (3.81 x 17.5 x 13.5 cm) | | Weight | 1.3 lb (0.6 kg) | | | | Package Weight | 2.85 lb | | Box Dimensions (LxWxH) | 10.5 x 8.3 x 4.1" |
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