Customer Galleries 

You can have your DIY Ground Sound project displayed on this page.
You only have to return some pics and comments on the sound and function.


"The Pimster - second gallery"
"The Pimster" as he calls himself has built a Seas Froy inspired loudspeaker and it's a very nice result. The loudspeaker is a 2,5-way based on two Seas W15CY001, ScanSpeak D3004/660000 and our electronics - Coolback II 300


Active DIY loudspeakers powered by Coolback II 600

Urs from Switzerland has constructed a closed-box loudspeaker
with drivers from Aurum Cantus and Scan Speak


The AKSA Equilibrium Jr. loudspeaker project

Thomas F was inspired to make a junior project of another Danish forum members project The Equilibrium. Have a look at the junior project - now it has become active....


Busk Audio - The Conductor under perfect conditions

Semi-Pro build loudspeaker system with Vifa & Scan Speak drivers

Comments from Christian:
"Everything has been elevated to something I had never expected from my humble setup"

Actually I had just guessed that my bass would get right, at best, but whew ...


An Active Wilson Audio Alexandria X2

An amazing DIY clone version of the famous
Wilson Audio Alexandria X2.
All processing by Ground Sound digital crossovers

Comment from Jean-Pierre:
The most notable improvement with the DCN was the feeling of lifting a blanket that had covered the loudspeakers


Perfectly build DCN23 & DCN24 kits

Drik S digital crossover projects.
I think the pictures speak for themeselves !


3- & 4-Way Fully Active 7.1 Surround Sound System

The Active Ground Sound concept together with expensive drivers from both Mundorf and Accuton/Thiel. Even the Dynaudio subwoofer will be replaced with a Accuton/Thiel woofer


Actively Powered Sphere:

German Hobby Hi-Fi Magazine project: Kugellautsprecher

Jim Thiel coaxial driver SCS3-N & Vifa 26WA550/4 bass mounted in two half spheres made up of MDF circles. Total diameter 58cm and a weight of 30 kg !


Active DIY clone loudspeaker:

DCN24 replaces DBX driverack

Where does the inspiration come from... read on


The XT612 project loudspeaker:

Make a simple powerful sound system !
Mission accomplished by Squeezebox & active loudspeakers

Lars A:
" - Excellent bass & good voicing"


Upgrade of very old Ground Sound amps
and replacement of old active filters:

Rebuilding old chassis with the modern Active Ground Sound Concept

Bjørn R:
"- I am truly surprised of the leap in Sound Quality - I didn't expect this much"
"- Now the annoying bass rumbling is gone together with the hiss"


Multiple plywood loudspeaker powered by Coolback II 600:
Mundorf AMT2510, Accuton C90-6-078 and 2 x ScanSpeak 18W/8531

Claus C:
"- the grip on the woofer is superb"

"- and I can not see myself going back to a passive system with the constraints that this will imply"

"I hope it can give some inspiration to others...!"


Upgrade at high speed...   Formula 1 McLaren / Mercedes


3-way Active multiple plywood loudspeaker boxes with expensive drivers:

RAAL 70-20XR AM, Audio-Technology 15H and AURASOUND NS 10-794 4A

Thomas S:
"And with 800 Watt horsepower per box it is like listening on steroids - Very controlled bass and the soundstage is almost holografic"


The Organ builders own DIY loudspeakers

Roland has build a set of loudspeakers with Mundorf and Accuton drivers and powered with Coolback II 600 (3-way Active Amplifier)

"I have tested a couple of different setups right now. They all sound really great."

"The active way with your Coolback is much more open, direct, fast, clean and colourful."


Making a pair of Vienna Acoustics Mahler fully active

Stefan have had a pair of Vienna Acoustics Mahler loudspeakers for a while without being really satisfied...

When acitve:
"Even with this basic setup the Mahlers sound way better than the original passive setup, and we are talking about 10.000€ speakers."


Active B&W in a 7.1 Home Theatre system

Ole has invested in 7 pcs Custom-made Wall-Hung Active Amplifiers with Ground Sound electronics. All is based on the Ground Sound Active Amplifier Solution and include both our digital crossovers DCN23 & DCN24 - which is DCN24 (4-way) for the front speakers and DCN23 (2-way) for the rest of the speakers.


Active DIY loudspeakers powered by Ground Sound electronics

"The sound quality is very good in my opinion (naturally)"

"Yes - the Ground Sound modules are a bit expensive, but I must say that I have not regretted the purchase. The spending is quickly recouped in saved money on expensive components for passive filters"


Active DIY Ribbons with assisting bass boxes

Jan has implemented an active solution with a pair of modified Chassis 600 for his ribbons.


Active 3-way DIY Seas loudspeakers

Matti has bought a pair of Chassis 1503 to make sure that his DIY speaker will get enough power.


Activating Dali Evidence 870

Thorbjørn has upgraded his old pair of Dali loudspeakers and given them new life with two Chassis 603 active amplifiers.

Thorbjørn: "I looked at my trusty speakers and though that if my subwoofers could work that great filtered by DCN23, then why not do the same with my front speakers?"


Antique full-range horns and subwoofer loudspeaker system

Bjarne is very technical minded and he has always experimented with technical solutions beyond what the "normal" DIY person would use.

Bjarne uses a DCN23 Digital Crossover module and PSU DCN Power Supply.

New colours - Wauw - Totally different impression


Rick's DIY Dynaudio loudspeakers

"Every evening I am enjoying the sound through the new DCN23 boxes..."


Meil's Magico Mini II clones

Meil has really put a lot of energy and time into this project - the result is extremely nice

"it's really an exciting product with a myriad of opportunities"
"....I feel like building some new speakers because it was so easy in terms of crossover.”


Herwig from Austria

DCN23 and Power Supply PSU DCN in a ModuShop Galaxy GX288 casing.
Capaciti 160 electrostatic loudspeakers powered by good old White Audio Class A Poweramp / DCN23
Updated DCN23 with AD8620 - Herwig: "Music is music."


Claus Karl has made two mono digital crossover boxes with a DCN23 kit

Claus Karl: "I am the proud owner of a DCN23 kit and enjoy every hour I can hear music with it.


Peter K's horn system

The system has been updated - second half of gallery...!

Peter bourght the amplifiers from gallery 3. Peter says:
"I do not miss any of my previous amps!"
"The sound is still clear and clean with a nice sense of ‘presence’ "
"the ‘blocks’ are VERY silent considering that the sensitivity of the speakers is +110 dB/1 watt(!) "


Oliver has made a Box with our DCN23 + PSU DCN.

Oliver P: "The speakers don't look fancy yet, but they sound incredibly good."

"I also appreciate the overall tonal balance of the DCN23. It doesn't sound digitally at all."


Svein has made a smaller pair of Studio Monitors

Svein: "It's the first time I build something this complicated so I was prepared for some challenges - BUT - thanks to good assembly descriptions from Ground Sound and Hypex it was a relative painless job"

"I am very surprised by how good the sound quality has gotten"
"The bass is deep, fast and well defined"


Harry's active Amplifier Chassis with digital crossover - DCN23
Harry have "converted" to active drive and in this gallery you'll find details and comments of the "conversion".

Harry: "I changed my current speakers to get a proof of concept - with big results. Very big difference from the old passive filtering!"

"Now I am going to built new speakers that can take better advantage of active filtering."


Morten's "Boxed" Coolback 603
Morten bought a pair of demo Coolback 603 to upgrade from passive filtering to active filtering.

Morten: "The bass is clearer and with much more correct body to the instruments. The mid now has more direct access to the recording and the same applies to the tweeter"


Jan Erik has made a pair of Active Amadeus loudspeakers:
The sound was quite OKAY and much better than from any other loudspeaker that he have owned previously. Most astonishing is the bass control and the effect of tweaking with the room modes - in his room 42Hz and 59Hz.


Markus has cloned the Pure Passion One loudspeakers:
It is a very big 5-way system in 5 seperate cubes - all active.

"The sound "flows" really free in the air, it is nearly incredible that it comes from the speakers."


The Neujahr digital crossover box
The DCN23 filter kit is installed in a transparent box

Neujahr: "It's sounds very well and makes a lot of fun to hear."

"The sound is indescribable, the smoothness and the dynamic, the voices, the transparency and the feeling of live playing."

"The result: That's music, the music is alive like you've never heard it before."


Nils Hjelte has made this nice active box
Nils:"It works and soon I will use in a real setup"


"The Pimster"
"The Pimster" as he calls himself has built a Seas Froy inspired loudspeaker and it's a very nice result. The loudspeaker is a 2,5-way based on two Seas W15CY001, ScanSpeak D3004/660000 and our electronics - Coolback303


Kim H. - new subwoofer boxes with 2 x 12" XXLS Peerles
He has installed seven amplifier blocks for his 5.4 surround home theatre. The loudspeaker system consists at the moment of five 2-way speakers with two 6,5" ScanSpeak bass/mid driver and one ScanSpeak 1" alu dome and the subrange is performed by 5pcs. boxes with Peerless 12" XXLS subwoofer drivers. Definitly a Home Theatre with a huge dynamic range...


Bernd Ewald's project DCN23 kit
He have activated a pair of DIY loudspeakers with Eton and Seas drivers. The filter will be setup as 3-way stereo with a Linn Unidisc SC sourse and a Chakra multi channel power amplifier.


Stig's active ATC
Stig bourght the 5 active amplifiers from gallery 6 and activated his ATC SCM-100. In this gallery you can see how simple it was...


Stefan Wössner:
By the way, both DCNs worked right from the start. No search for errors necessary. Your assembly instructions are very good. I started with a generic DCN setup, based on the recommendations of the speaker producer (Manger) for crossover frequency and characteristics. The woofers are build in a closed cabinet and show a drop off below 80Hz (calculated), so I corrected this to be linear down to 30Hz. It already sounded great. Then I used the programming based on my measurements, where I corrected some room resonances and pulled up the Manger's soft roll-off at high frequencies. The result is a frequency response within a 5db range from 28Hz to 20kHz with a sweet-tempered phase.
The listening result almost knocked me off my shoes. Crystal clear heights like I never heard them from Mangers and a very tight an low bass.



We will continually add customers' creations and comments on this page
- so if you think it is interesting keep on coming back once in a while.


GS Galleries © Ground Sound * Products of Denmark