73EQ JR | HA73EQJR

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73EQ JR

Art.-Nr.: HA73EQJR

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Formed in 2011 by group of sound and electronics engineers with +45 years of combined experience in the Pro Audio world, Heritage Audio brings a new flavor to the high end studio equipment market. Combining a vintage look and sound with key features not found in ancient equipment, Heritage Audio adds some spice to 1970s Series 80 consoles and outboard racks, expanding the sonic palette of any professional or home studio.

Overview

500 Series ´73 EQ JR 3 Band EQ

The 73EQ JR is a fully featured Line Input module for the 500 Series. It not only shares the 3-band Equalizer with his big brother, the 1073, but also shares the same transformer coupled line preamp and Class A transformer balanced output stage.

These facts make the 73EQ JR unique on its class, being able to capture a full transformer based, Class A sound without relying on external preamps.

The Equalizer features the same Baxandall type High and Low shelf found in the 1073, with the addition of a high frequency selector switch. 4 different frequencies are possible instead of the fixed 12Khz one.

The mid band is the same exact dual inductor 1073 one, thick low and sweet high midrange boosts without being muddy or brittle! The line preamp has a range of +6 to -20dB, allowing heavy eq boosts without overloadingA/D converters.

Finally, special care has been taken with power handling, implementing internal +24v slow turn on regulation (about 20 seconds to reach full voltage ). This makes the 73EQ JR independent of the rest of the slots and makes lunchbox´s PSU happier.

Product Details

1073 style EQ
+6 to -20dB Class A Line Amplifier, Bridging input impedance, balanced and floating.
Class A, single ended, 2N3055 driven high headroom output stage.
3 band EQ with high and low shelf baxandal type eq and fixed ‘Q’ peaking mid frequency eq
High frequencies: 10, 12, 16 or 20kHz, +- 16dB
Low frequencies: 35, 60, 110 or 220 Hz, +- 16dB
Mid frequencies: 0.36, 0.7, 1.6, 3.2, 4.8 and 7.2 kHz +- 18dB
Internal Slow Turn-on +24v power supply for lower inrush current, improving lunchbox performance.
Carnhill Transformers.
Marconi style knobs
500 series format

+/-16dB shelving, 10, 12, 16 or 20kHz, Baxandall type

+/-16dB shelving, 35Hz, 60Hz, 110Hz, 220Hz ,Baxandall type

+/-18dB peaking, fixed 'Q' , 0.36kHz, 0.7kHz, 1.6kHz, 3.2kHz, 4.8kHz, 7.2kHz , dual inductor based

10KOhms bridging, transformer balanced

< 75 Ohms, transformer balanced

> +26dBm into 600 Ohms

< 0.025% at 1Khz, < 0.05% at 100Hz.

20Hz (+0.3dB) to 20Khz (-0.2dB).

6dB.

< -100dBm.

85 mA @ +-16VDC

13.34 x 3.81 x 15.09 cm, 1x 500 series slot