EQ573-II - EQ 500 series, Neve style - DIY Analog Pro Audio
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  • EQ573-II - EQ 500 series, Neve style - DIY Analog Pro Audio
  • EQ573-II - EQ 500 series, Neve style - DIY Analog Pro Audio

EQ573-II Equaliser for the series 500

$382.93
$389.82 VAT incl.
$389.82 VAT excl.

The EQ573-II is an parametric equalizer based on the design that was originally used in the Neve 1073 and 1084 modules, that has been adapted to the '500' format of API*.

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EQ573-II

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The EQ573-II is an parametric equalizer based on the design that was originally used in the Neve 1073 and 1084 modules, that has been adapted to the '500' format of API*.

The EQ573-II can be used as a standalone unit but also as an insert, between the input and output stages of the MP573 mic pre, recreating the full architecture of the 1073.

the EQ573-II is the successor to the EQ573. The improvement mainly concerns the ease of assembly and the reliability of the final product. The audio behavior is the same, the only differences being the lack of attenuation when inserting into an MP573 and the removal of intermediate Q in the mid band.

Just install it in your API* compatible LunchboxTM rack and start recording.


Highlights

    • Three bands equalizer and high pass filter
    • High shelf EQ: +/-16dB @ 10kHz, 12kHz, 18kHz, 20kHz, 25kHz
    • Mid EQ: +/-18dB @ 0.27kHz, 0.36kHz, 0.5kHz, 0.7kHz, 1.1kHz, 1.6kHz, 2.3kHz, 3.2kHz, 4.8kHz, 7.2kHz, 10kHz
    • Low shelf EQ: +/-16dB @ 20Hz, 35Hz, 60Hz, 110Hz, 220Hz
    • High pass filter: -18dB/octave @ 25Hz, 45Hz, 70Hz, 160Hz, 360Hz
    • Additional frequencies in all bands
    • 2 Q values for the mid EQ (1073 and 1084-Hi)
    • Pre/Bypass/XLR switch on the front panel allows both MP573 insert or standalone mode
    • Single ended, class A circuit
    • Carnhill inductors
    • Available assembled or as a full kit (everything included)

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Controls

1 High shelf corner frequency: From 10kHz to 25kHz (OFF=disabled).

2 High shelf level: Sets the high frequency attenuation or boost from -16dB to +16dB.

3 High Q Gain switch: Modify the Q of the mid frequency band.

4 Mid band center frequency: From 270Hz to 10kHz (OFF=disabled).

5 Mid band level: Sets the mid frequency attenuation or boost from -18dB to +18dB.

6 Low shelf corner frequency: From 20Hz to 220Hz (OFF=disabled).

7 Low shelf level: Sets the low frequency attenuation or boost from -16dB to +16dB.

8 Source Selects the source of the EQ between XLR and a linked MP573 preamp (OFF=bypass).

9 High pass filter: From 25Hz to 360Hz (OFF=disabled).


What's in the kit?

Absolutely everything!

  • Passive components (resistors, capacitors),
  • 2 Carnhill inductors
  • Active components (diodes, transistors, LED, ...),
  • Front panel elements (switches, potentiometers, knobs),
  • Connectors, relay,
  • PCB's,
  • Front panel and side panel,
  • All hardware

You bring the solder (use good quality solder, 1mm diameter max) and the Lunchbox.


Difficulty level

The EQ573 kit is a rather complex build because of the high components density.

PK008

Specific References


Technical specifications

Measure Conditions Value
Iddle supply current No input signal I = +/- 40mA
Input impedance f=1kHz on XLR 20kΩ
Maximum input level on input XLR +25dBu
Maximum output level before clip on output XLR +26dBu
High Freq maximum boost/cut   +/-16dB
Mid Freq maximum boost/cut   +/-18dB
Low Freq maximum boost/cut   +/-16dB
High pass filter attenuation   -18dB/octave

Build and review of the EQ573

Reviews

Grade 
Stefan
07/05/2022

my 2nd DIY-Module

This Module was my 2nd DIY build. After I learnd my lesson on my 1st build, what it means to organise all parts befor you start, It was a joy to build this EQ.
And in the end, the most important thing is, this module rocks!!! Compared to my UAD 1073 EQ the EQ curves are very similar and the sonic characteristics are very close, but through the hardware unit, the signal has more body, is more 3 dimensional. I really love this peace of gear. Next thing is building the MP573 an run the EQ through it...Thank you Jean-Pierre for these beautiful kits.

Grade 
Matthias
11/23/2018

Perfect! The classic Neve EQ and very musical

This EQ needs a lot of patience and concentration while building it, but it is absolutely worth the effort. It’s the perfect supplement for the MP573 preamp. I use it in my studio for tracking on every single track. It’s so musical that you rarely need any other EQs with more bands. If the sound is allowed to get coloured in a nice way you can even use it for mastering – I did this and achieved great results in no time (faster than with a Pultec). It’s great that the EQ573 combines the 1073 and 1084 models: You have a bandwidth switch for the mid frequencies and more frequencies available for the high shelf. It’s worth looking at the frequency response while using it (with Waves Q-Clone for instance) – you begin to understand why you don’t need more EQ bands for a perfect sound ;-)
I disagree with the other reviewer here: I don’t find it harsh at all (if you use it "correctly"). But as always, you should also consider using it for cutting the frequencies you don’t need and not only for boosting. With a reasonable combination you have a high class musical sound and lots of possibilities.

Grade 
ZMFG
08/01/2018

Good For Certain Things

For the record, I had never soldered before I bought my first Sound Skulptor kit (CP5176). Also, I am not a trained recording engineer. This is the only Sound Skulptor I would give a 4 (out of 6 I own). What I've noticed after using this for a little over a year is that it can be a bit harsh. I use it more for HF/LF cut, and gentle tuning in the inner frequencies. I run it "inside" of my MP573 (which I love!), and occassionally in series when I am not getting the results I'm looking for. The build is a little tricky getting the pots and set up straight, but I had a lot of fun learning how this parametric structure works.

Write your review

EQ573-II Equaliser for the series 500

The EQ573-II is an parametric equalizer based on the design that was originally used in the Neve 1073 and 1084 modules, that has been adapted to the '500' format of API*.

Write your review