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01-14-2014 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 1
Post ID: 20444
Reply to: 20444
Avantgarde method of cap biasing.
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The DC biasing of filtering caps was something that I was advocating for years but recently I was pointed out that German Avantgarde took it a bit further. I did not use this method but it goes sound interesting. Read the Avantgarde’s document, the page #5

http://www.avantgarde-acoustic.de/trio-product-en.html?file=tl_files/avantgarde/downloads/produkte/trio/downloads/en/trio-g2_fact_sheet_engl.pdf

Rgs, Romy the Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
02-17-2014 Post does not mapped to Knowledge Tree
hoan da ox
Switzerland
Posts 1
Joined on 02-17-2014

Post #: 2
Post ID: 20616
Reply to: 20444
Question
fiogf49gjkf0d
Hello to all, After following the comments of Romy for some time (have learned a lot, thank you), I would like to ask a question on this subject.This circuit is built with resistors, diodes and capacitors. Could someone elaborate how it can produce a smooth curve by "cutting" the current in discrete values ? it looks a bit like an AD conversion, how does a smooth curve result from this ? The before-curve shows a sinus with a clear interruption - then all other horns should produce terrible distorsions, am I wrong ?Avantgarde claims they use only 4 passive elements for the complete system, how is it possible looking at this schematic ?Regarding these horns I have a second question : they use ABS. I heard them and the sound is outstanding. How does ABS compare with glassfiber or carbonfiber ? I heard that these materials can resonate. Does anyone have experience with this ?Thanks and br Mark
02-18-2014 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 3
Post ID: 20620
Reply to: 20616
Idiocy
fiogf49gjkf0d
 hoan da ox wrote:
Hello to all, After following the comments of Romy for some time (have learned a lot, thank you), I would like to ask a question on this subject.This circuit is built with resistors, diodes and capacitors. Could someone elaborate how it can produce a smooth curve by "cutting" the current in discrete values? it looks a bit like an AD conversion, how does a smooth curve result from this ? The before-curve shows a sinus with a clear interruption - then all other horns should produce terrible distorsions, am I wrong ?Avantgarde claims they use only 4 passive elements for the complete system, how is it possible looking at this schematic ?Regarding these horns I have a second question : they use ABS. I heard them and the sound is outstanding. How does ABS compare with glassfiber or carbonfiber ? I heard that these materials can resonate. Does anyone have experience with this ?Thanks and br Mark

Mark, the Avantgarde circuit is idiocy.  I initially did not get what it was but now as you mentioned it I looked again and realized that there is no DC source in there!  The DC-bias caps are a very good thing, I used it many time and there are unquestionable benefits. The Avantgarde does not use a DC buttery and other would do but they decided to rectify the sound single and use the rectified DC for cap’s bias. How stupid nigh it be? It is not to mention that it was made is acoustic system that costs many dozens thousand dollars.  Ridicules!!!!


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
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