Proiect subbass Planar Wave Horn cu c18-650EL

Mircea Bartic · **Scris:** Vin Noi 10, 2006 2:37 pm

congratulations!

fabrizio971 · **Membru din:** Sâm Oct 14, 2006 9:10 pm **Mesaje:** 42

nexus3 scrie:

congratulations!

thanx

but can you tell how is the bass of this sub?

is it better for tekno or for drum and bass or reggae?

Mircea Bartic · **Scris:** Vin Noi 10, 2006 3:24 pm

your version is best for Techno

fabrizio971 · **Membru din:** Sâm Oct 14, 2006 9:10 pm **Mesaje:** 42

nexus3 scrie:

your version is best for Techno

ok right

in france, there are a lot of people , they watching for this project and if the results is good you can be sure thare it will the first one but not the last one!!

i will tell how it's sound when it will be finish

fabrizio971 · **Membru din:** Sâm Oct 14, 2006 9:10 pm **Mesaje:** 42

Citat:

Proiectul este facut de mine folosind ca punct de plecare un proiect dezvoltat de firma Dynacord , modelul F18PWH .
Este un proiect experimentat in mod practic si comparat cu cel original .

Nu este nevoie de "cuplare acustica a hornurilor" pentru a cobori in frecventa .

Firma Dynacord a proiectat acest tip de horn dar ( in opinia mea ) a facut o mica greseala .

Amplasarea rezonatorului in interiorul hornului a limitat o parte din basul produs de rezonator datorita limitarilor fizice si geometriei hornului .

Am experimentat acest model facind mai multe modificari .
Am comparat o boxa originala Dynacord ( cu difuzor EVX180 ) cu una facuta ca in aceasta schema .
Cu toate ca este mai mica , suna mai bine si coboara mai jos .

Singura difertenta in minus ( fata de boxa originala ) se simte la o distanta mai mare de 50 ~ 60 metri . Boxa originala proiecteaza mai bine sunetul la mare distanta pentru ca hornul este mai lung fata de acest proiect .
Oricum , proiectia mai buna esate valabila doar pentru frecventele din spectrul 80 ~ 160Hz .

Nu am fost interesat de o boxa exagerat de mare pentru ca F18PWH este foarte dificil de carat . Multa lume din show-biz s-a plins ca este criminal sa te plimbi prin tara cu 24 de F18 + 16 x F12 . Trebuie o echipa de 4 oameni ca sa le manevreze si ocupa foarte mult loc in camioane .

Ar mai fi si o alta problema .

Toata lumea stie ca F18PWH ( modelul original Dynacord ) suna destul de rau daca sunetul nu este procesat . Dynacord recomanda explicit acest lucru .

Care este problema ?
Studiind graficul , vedem ca F18PWH este foarte galagioasa intre 65Hz si 150Hz ( peste 100dB ) dar se comporta normal ( la fel ca orice alta boxa ) pe la 50Hz sau mai jos ( 97dB la 50Hz - masurat la 1w )
Acest fenomen se intimpla datorita faptului ca rezonatorul incearca sa produca bass in interiorul unui horn prea mic pentru a reda o astfel de frecventa .

Documentatie :
http://www.dynacord.de/pdf/58_9_download.pdf
http://www.kaufein.ch/images/products/5746.jpeg
http://www.dynacord.de/pdf/58_4_download.pdf

Acest model de incinta are un mare avantaj .
Produce un bass puternic intr-un volum rezonabil . Proiecteaza sunetul la distanta dar suna bine si aproape . Este buna si pentru discoteca dar si pentru sonorizari live .

sorry but it's impossible to have a translation of this post but it's importante for me to understand all the problem in resonance of the sound so can you translate it to me please?

Mircea Bartic · **Scris:** Sâm Dec 02, 2006 7:58 pm

Here you are :wink:

Citat:

The project is made by me (Dj DNA) using the Dynacord F18-PWH as a starting point.
It is a practicaly experimented project compared head to head with the original.

There is no need for the horns to acoustically couple for them to go lower in frequency.

Dynacord designed this type of horn, but in my opinion they made a little mistake.

Putting the resonator inside the horn , limmits part of the bass produced by it because of the the physical limitations and the geometry of the horn.

I have experimented this model making several alterations.
I compared an original F18PWH loaded with the original driver EVX180 to this one.
Atrough it is smaller , my design sounds better and has a lower F3.

The only difference in a bad way compared to the original can be felt beyond 50-60 meters in front of it. The original projects the sound a bit more because of the longer horn path.
Anyway, the enhanced projection exists only in the 80-160Hz frequency spectrum.

I was not interested in a huge box because F18PWH is verry dificult to carry. Many people involved in Show Business had complained that it was horrible to make a national tour using 24x F18-PWH and 16x F12-CWH. You had to have a minimal crew of 4 people just to put up / take down the system, and the space occupied in the trucks is trully enormous.

And there is another problem.

Everybody knows that F18PWH (the original ) sonds preety BAD if not properly processed , Dynacord specifically points out this fact.

Why is this happening ?
By studiyng the graphic, we can see that F18PWH is verry noisy between 65 and 150Hz (more than 100dB) but behaves just like a bassreflex below 50Hz( 97dB at 50Hz - measured at 1W )
This phenomenon is happening because the resonator is trying to reproduce bass frequency in a horn with a mouth to smll to sustain the wavelenghts involved.

Documentation :
http://www.dynacord.de/pdf/58_9_download.pdf
http://www.kaufein.ch/images/products/5746.jpeg
http://www.dynacord.de/pdf/58_4_download.pdf

This type of sub has a great advantage:
It produces a powerfull bass in a reasonably sized volume. Projects the sound at great distance, but sounds OK up close too. Is is usable for live outdoor concerts, but also for indoor discos.

[/quote]

fabrizio971 · **Membru din:** Sâm Oct 14, 2006 9:10 pm **Mesaje:** 42

pic hosting & size edited by Nexus3

Mircea Bartic · **Scris:** Dum Dec 03, 2006 11:06 pm

I see you made the short version.

very nice, how do they sound?

fabrizio971 · **Membru din:** Sâm Oct 14, 2006 9:10 pm **Mesaje:** 42

I prefere to grind the high speaker before making tests with 500w rms

but with only 150 w rms the sound is not bad
i willl give you a real answer after i will test it with 500 or 600 w behind the planar. ok?

fabrizio971 · **Membru din:** Sâm Oct 14, 2006 9:10 pm **Mesaje:** 42

yesterday afternoon, i has tested the short planar with a qsc rmx 1400 behind and the result is good.

i has tested it with only reaggae and dub because this type of music ask for a deep bass as i like, and with this kind of music it's super.

at 6 meters , you feel the bass in your plexus.

deepness and efficiency are ok

it's the first planar in france, and a friend of mine will make 4 planar as quickly as possible

thanx for the plan, mr nexus3!!

fabrizio971 · **Membru din:** Sâm Oct 14, 2006 9:10 pm **Mesaje:** 42

fabrizio971 scrie:

yesterday afternoon, i has tested the short planar with a qsc rmx 1400 behind and the result is good.

i has tested it with only reaggae and dub because this type of music ask for a deep bass as i like, and with this kind of music it's super.

at 6 meters , you feel the bass in your plexus.

deepness and efficiency are ok

it's the first planar in france, and a friend of mine will make 4 planar as quickly as possible

thanx for the plan, mr nexus3!!

i have tested it during 8 hours for a little disco session it 's a good plan
during this night with 600 w rms behind and it's sure now i will do another one to complete my set

do you have a plan to complete the planar for the sattelite ( mid/high)

Mircea Bartic · **Scris:** Lun Dec 18, 2006 10:47 pm

2x C12-300MB
1X WN-D72 or BM-D750 other 2" driver
1x PH2723 Horn

all from P-audio

fabrizio971 · **Membru din:** Sâm Oct 14, 2006 9:10 pm **Mesaje:** 42

yes all in p audio

but in france we don't have all the speakers from P audio
is it possible to use selenium speakers instead of the P audio?

wich reference?

Mircea Bartic · **Scris:** Mie Dec 27, 2006 6:03 pm

of course

use D3300Ti for driver and WPU1209 for midbass

Dan Nita aka DNA · **Scris:** Mie Dec 27, 2006 7:50 pm

If you want a better version, use this components :

Selenium HM47-50-SLF + D3500Ti-Nd
Selenium 12MB2P - 2 pcs.

Crossover should be at 800Hz ( 3th order or 1200hz L-R second order ).
It should be better if this mid high loudspeaker it would be powered by a 2 x 1800 w/ 4ohm rms power amplifier.

forumpoweraudio.ro

Proiect subbass Planar Wave Horn cu c18-650EL

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