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Herwig in Austria has made a Digital Crossover with our DCN23 and Power Supply PSU DCN
in a ModuShop Galaxy GX288 casing.
![](customer/HerwigAT/Herwig_4.jpg)
The stereo system consists of:
Source:
Linn LP12 / Lingo New / Trampolin / Ekos / Klyde 2004 / Lingo
Niam CD3.5 with HighCap
Preamplifier:
Niam NAC282 with power supply DualTeddyCap MK3 from Teddy Pardo
Loudspeakers / Power Amplifier / Digital Crossover:
Capaciti 160 electrostatic loudspeakers powered by good old White Audio Class A Poweramp / DCN23
Sub:
2 pushpull Visaton TIW200XS Subwoofers driven by HiFiAkademie Poweramp with built in digital crossover
![](customer/HerwigAT/Herwig_2.jpg)
The Modu box with our DCN23 and PSU beside the HiFiAkademie AMP
![](customer/HerwigAT/Herwig_3.jpg)
Here is a closer look at the big old White Audio Class A amplifier and the bottom part
of the left
Capaciti Loudspeaker. In the back ground you can see the push-pull subwoofer with 8" drivers.
![](customer/HerwigAT/Herwig_1.jpg)
After playing with the DCN23 for a while, Herwig decided to have the DCN23 filter modified with new op-amps.
The choise was the very expensive AD8620 from Analog Device.
After the return of the upgrade made here at Ground Sound - Herwig comments are:
"The update with the AD8620 is a big improvement to the NE5532."
"The normal DCN23 is good hifi, but with the AD8620 music is music." ![](images/smile.gif)
Herwig will probably also install the resistors between DCN23 and the White Audio amplifier
for better resolution and signal-noise ratio, which I think will improve the sound even more...
Let us know how it turns out if you make the modification !
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