Die Suche ergab 14 Treffer

von Bruno
05.06.2015, 20:10
Forum: Aktivlautsprecher
Thema: Kii Three - Bruno Putzeys' neue Kreation
Antworten: 667
Zugriffe: 272752

Kii Three - Bruno Putzeys' neue Kreation

Hi Oliver, At some point the wavelength becomes so long that when you place the speaker near a wall the dipole component cancels and only the omni component remains. So pushing the cardio transition deeper is only meaningful if you are actually planning to use the speakers free standing. I think the...
von Bruno
05.06.2015, 11:59
Forum: Aktivlautsprecher
Thema: Kii Three - Bruno Putzeys' neue Kreation
Antworten: 667
Zugriffe: 272752

Kii Three - Bruno Putzeys' neue Kreation

Below 40Hz the THREE is essentially an omni. At that point it follows the same physics as any speaker when it comes to SPL and cone movement. For the same SPL at 20Hz it needs to move exactly as much air (in litres per second) as any other speaker, including the Phantom. The same material, replayed ...
von Bruno
22.05.2015, 11:24
Forum: „wie ich zum aktiven Hören kam“
Thema: Bruno (Grimm LS1, Kii Three)
Antworten: 26
Zugriffe: 11846

Bruno (Grimm LS1, Kii Three)

FIR DACs have been around for as long as I remember. The only seriously new thing in this design is the PWM modulator which has lower distortion than any 1-bit modulator I've seen. Other than that it's really just attention to detail (the analogue design, the upsampler etc). It's not the novelty tha...
von Bruno
22.05.2015, 10:37
Forum: „wie ich zum aktiven Hören kam“
Thema: Bruno (Grimm LS1, Kii Three)
Antworten: 26
Zugriffe: 11846

Bruno (Grimm LS1, Kii Three)

They're not DAC chips but standard flip-flops. There's no single device in there that was ever designed to be part of a DAC :) The things that require shielding in RF circuits are the air coils of tuned circuits. This doesn't arise here. Anything else can be designed without shielding but you have t...
von Bruno
21.05.2015, 19:57
Forum: „wie ich zum aktiven Hören kam“
Thema: Bruno (Grimm LS1, Kii Three)
Antworten: 26
Zugriffe: 11846

Bruno (Grimm LS1, Kii Three)

The only thing we outsourced was the name and the logo. According to the designer of the logo, animals have always made for memorable luxury brands. I think he was right on the money there. So far nobody who's seen the name has managed to forget it. It has a delicious silliness to it that sticks in ...
von Bruno
21.05.2015, 10:47
Forum: „wie ich zum aktiven Hören kam“
Thema: Bruno (Grimm LS1, Kii Three)
Antworten: 26
Zugriffe: 11846

Bruno (Grimm LS1, Kii Three)

Hi All, Putting the Mola-Mola DAC into the THREE was not really an option. It dissipates about 12W per stereo pair, so we'd be looking at 36W more heat. Another reason is that Mola-Mola and Kii are separate enterprises so I can't just lift IP from one and drop it into another. We did put in an async...
von Bruno
21.05.2015, 10:13
Forum: Aktivlautsprecher
Thema: Kii Three - Bruno Putzeys' neue Kreation
Antworten: 667
Zugriffe: 272752

Kii Three - Bruno Putzeys' neue Kreation

Hi Charles, good to hear from you! But err, mopeds prohibited? Hier ist ein unfokussiertes Bild vom Anschlußfeld. Aufdruck fehlt noch. Nach dem Biegen paßte das Teil nicht mehr unter dem Lasergraviergerät. http://i57.tinypic.com/1qh2dt.jpg Der Schalter neben des XLRs hat 3 Positionen. Links/Rechts d...
von Bruno
20.05.2015, 17:04
Forum: Aktivlautsprecher
Thema: Kii Three - Bruno Putzeys' neue Kreation
Antworten: 667
Zugriffe: 272752

Kii Three - Bruno Putzeys' neue Kreation

Ah yes, the showroom model :) Later tonight I'll make a pic of one that has electronics in it.
von Bruno
20.05.2015, 13:41
Forum: Aktivlautsprecher
Thema: Kii Three - Bruno Putzeys' neue Kreation
Antworten: 667
Zugriffe: 272752

Kii Three - Bruno Putzeys' neue Kreation

Hi All, Perhaps one day I'll try posting a sample of my German and you'll thank me for switching back to English :D I use current drive wherever it helps reduce distortion. The midrange, for instance is entirely current driven. Some confusion is caused by the term "Entzerrung" which could mean reduc...
von Bruno
20.05.2015, 12:56
Forum: „wie ich zum aktiven Hören kam“
Thema: Bruno (Grimm LS1, Kii Three)
Antworten: 26
Zugriffe: 11846

Bruno (Grimm LS1, Kii Three)

Again thanks for all the welcomes. As promised a few shots of my listening room. http://i60.tinypic.com/5vi84.jpg Apart from the pileup of loudspeakers in the corners it doesn't exactly proclaim that an audiophile lives here. I expect to be scolded for actually putting a sofa between the speakers :)...
von Bruno
19.05.2015, 14:07
Forum: Aktivlautsprecher
Thema: Kii Three - Bruno Putzeys' neue Kreation
Antworten: 667
Zugriffe: 272752

Kii Three - Bruno Putzeys' neue Kreation

Hi All, I’m quite impressed by the thoughtful posts made here regarding cardioid cabs and of course Noels extensive report. I’m also enormously flattered that Noel likes the Kii THREE design so much that he would actually duplicate it. I should explain that my primary reason for making a cardioid is...
von Bruno
19.05.2015, 13:24
Forum: „wie ich zum aktiven Hören kam“
Thema: Bruno (Grimm LS1, Kii Three)
Antworten: 26
Zugriffe: 11846

Bruno (Grimm LS1, Kii Three)

Thanks everyone for the warm welcomes.

I'm not sure what you meant by sewing box but I have a sneaking suspicion my German might actually be better than Öttingers English.
von Bruno
19.05.2015, 12:27
Forum: „wie ich zum aktiven Hören kam“
Thema: Bruno (Grimm LS1, Kii Three)
Antworten: 26
Zugriffe: 11846

Bruno (Grimm LS1, Kii Three)

Hi Uli, Good to hear from you! We met at the AES (with Bob K). Good idea. I'll make a pic of my listening room tonight. I have taken no acoustic measures because I currently live next to a noisy street and hope to move in the near future. So I didn't feel like investing in acoustics. But since this ...
von Bruno
19.05.2015, 10:06
Forum: „wie ich zum aktiven Hören kam“
Thema: Bruno (Grimm LS1, Kii Three)
Antworten: 26
Zugriffe: 11846

Bruno (Grimm LS1, Kii Three)

It's the future, ain'it? Hello, Apologies for not writing in Goethe's language but I really must spare you my secondary school German which amounts to literally translated English delivered in a perfect German accent. I do understand it fluently though so there's no need to switch languages. I got ...