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In the Forum: Horn-Loaded Speakers
In the Thread: Macondo’s Midbass Project – the grown up time.
Post Subject: ModestyPosted by Romy the Cat on: 11/29/2010
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Yes, if you have a midbass horn that more or less properly built then modesty and humility   of the horn setup is the key ingredient of the horn sound. When I have my old transformer 11:1 then I had the midbass horns calibrated so perfectly that you can tune a large symphonic orchestra by it sound. It was spectacularly stop-on setting with any type of music if played it never was too much or to little – it was perfection that might be taught in the hi-fi schools if they exists.

But I did not have power and I went for 9:1. Since then I keep playing the modesty games, constantly rolling off .25dB. The initial 1.6dB drop was implemented of cause but then running the attenuation back and forth I do not have that perfection that I had before. After long thinking I desired to move the crossover point of the first line level filter from 107Hz to 100Hz and drop another .5dB.  I mean I will drop 1.5dB on attenuation but will switch the out tube for +1 by plate dissipation, driving the 6C33C at 55W. I think that will do the trick as driving plate hotter I will get Rp down and will closer harmonically to 11:1 my setting. The most important I will get my power back. Horn or no horn but to drive the 15” driver from 6C33C I do what to have some spare power.  With absence of neighbors I sometime drive playback VERY hard and I would like it to be absolutely not restricted by power. On 6C33C the divergence between 45W and 55W is 1dB by gain, so I will burn in my input voltage divider….

CatAndIceScream.jpg

Meanwhile I exercise the most distinctive quality of myself – modesty, by finding the most modest operation point for my midbass horn. I have to note that it is very lucrative and attractive idea to make it to shine from hi-fi perspective but I keep repeating to myself that modesty is a fucking virtue.

The Cat

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