Guest Posted August 22, 2023 Posted August 22, 2023 This is organised, and I have drink cards! And yes, @sir sanders zingmore's idea is a solid one! I've met many very good friends here that I wasn't such a fan of until I'd met them in in person eventually. From that point on, I had a much better understanding of the tone and context of their posts. 9
davewantsmoore Posted August 22, 2023 Posted August 22, 2023 20 minutes ago, Marc said: until I'd met them in in person Heh. I have only met a few, but never failed to surprise.
Addicted to music Posted August 22, 2023 Posted August 22, 2023 11 minutes ago, March Audio said: I'm also happy to run an after hours session in our room (inclusive of drinks ) so people can listen/discuss without the crowds. A demonstration on what looks good and bad on a scope with the associated gear so the audibility can be distinguished would be a suggestion. 1
Keith_W Posted August 22, 2023 Posted August 22, 2023 5 hours ago, POV said: You’d have to say very little has materially progressed in the field of audio engineering in the last 2 decades. Digital technology has taken hold and matured, but is there very much known now about audio engineering today that wasn’t known in the early 2000’s as an example? The obvious exception I suppose is the advancements in class D and the potential to mount an argument that the amplification problem has been ‘solved’. But there are advancements in audio! Here are some things we have now that did not exist when I started on this hobby 30 years ago: - Taking measurements at home is now within the realm of home hobbyists with inexpensive and sometimes free tools. You can buy a USB mic for $200, REW is free, and a Cosmos E1DA allows you to take jitter measurements for only $300. Up till a year ago, the latter was impossible without expensive equipment costing thousands of dollars. - Nearly any music you want can be easily found and streamed at any time at low cost. I still remember reading about performances in books and searching online catalogs and secondhand markets for out of print CD's. I was amazed when I found a rare performance of a Mahler Symphony online and available immediately, in the past it would have taken me months to get hold of the CD. - I can control everything from my listening chair with my phone or tablet. No need to get on my knees and squint at small print on my CD splines. - DSP software is easier to use and more accessible to the average hobbyist. - I was chatting to Stuart of SGR the other day. He has a tool (a Klippel) that helps him develop new drivers which are more precise and more linear than anything else on the market. - Digital amplifiers now exist. This is an entirely new type of amplifier, not Class D. The digital signal directly modulates the amplifier signal with DA conversion happening at the output stage. This is said to produce the cleanest, most transparent sound possible. When I bought my speakers 15 years ago, I never imagined I would have the tools we have today. Yet the average audiophile would turn their noses up at every one of these things I listed. DSP is regarded with suspicion, and audiophiles still won't use Class D amps despite the technology being mature and offered by some high end manufacturers (e.g. Jeff Rowland). 2 hours ago, March Audio said: Me, happy to pay for beers. Good thing for you I have quit alcohol so you'll only be paying for tap water for me 6
Addicted to music Posted August 22, 2023 Posted August 22, 2023 27 minutes ago, Keith_W said: - Digital amplifiers now exist. This is an entirely new type of amplifier, not Class D. The digital signal directly modulates the amplifier signal with DA conversion happening at the output stage. This is said to produce the cleanest, most transparent sound possible. That’s been tried back in the 2000 but somehow never took off. https://www.stereophile.com/content/sharp-sm-sx100-digital-integrated-amplifier-measurements-part-4 It was a different concept to typical class D design. Sharp Pty Ltd had some really great ideas. Maybe this isn’t what this market niche wants because separate boxes for digital and analog conversion can be replaced individually as “better” products come onto the market: not restricted to a single box concept.
Assisi Posted August 22, 2023 Posted August 22, 2023 32 minutes ago, Keith_W said: Klippel Speakers manufactured by March were subjected to measuring and testing using one and the results published on another Forum. The results were not good. John 2
georgehifi Posted August 22, 2023 Author Posted August 22, 2023 (edited) 59 minutes ago, Keith_W said: and audiophiles still won't use Class D amps despite the technology being mature and offered by some high end manufacturers (e.g. Jeff Rowland). "technology being mature and offered by some high end manufacturers (e.g. Jeff Rowland)." Wouldn't go near them, this is their $14k Rowland Research Continuum SII Are just tricked up $100 Chinese Sanway sub woofer plate amps Cheers George Edited August 22, 2023 by georgehifi 1 1
March Audio Posted August 22, 2023 Posted August 22, 2023 (edited) 53 minutes ago, Assisi said: Speakers manufactured by March were subjected to measuring and testing using one and the results published on another Forum. The results were not good. John This is not true. The amateur Korean reviewer in question misled people by making them think he has a Klippel NFS (near field scanner). He doesn't. He has a base level Klippel system which is very limited in its capabilities and cannot subtract the effects of the room. He measures in a tiny inappropriate home office space. I won't bore you with the other areas of incompetence. Professional independent review here: https://www.erinsaudiocorner.com/loudspeakers/march_audio_sointuva/ Edited August 22, 2023 by March Audio 1
Addicted to music Posted August 22, 2023 Posted August 22, 2023 41 minutes ago, georgehifi said: "technology being mature and offered by some high end manufacturers (e.g. Jeff Rowland)." Wouldn't go near them, this is their $14k Rowland Research Continuum SII Are just tricked up $100 Chinese Sanway sub woofer plate amps Cheers George i think the only class D to trust is the Hypex products, the rest is not up to scratch, and yes ive ad a number of the here. 1
aussievintage Posted August 22, 2023 Posted August 22, 2023 5 minutes ago, Addicted to music said: i think the only class D to trust is the Hypex products, the rest is not up to scratch, and yes ive ad a number of the here. They certainly seem to be the cream that has risen to the top. Fender use Icepower modules in some of their new amps (I have a 100 watt one) so I would expect them to be trustworthy too.
March Audio Posted August 22, 2023 Posted August 22, 2023 7 minutes ago, Addicted to music said: i think the only class D to trust is the Hypex products, the rest is not up to scratch, and yes ive ad a number of the here. That and the Purifi. Both designed by Bruno Putzeys 2
NonPlayableCharacter Posted August 22, 2023 Posted August 22, 2023 The volunteer team have made every effort and given every chance to keep well-mannered debate flowing, but yet again we've drifted away from the topic at hand and it seems many posters cannot resist mudslinging and behaving in an inflammatory manner. Frankly, this thread is tying up too much volunteer effort for the value it is providing. 4 1 1
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