Interesting read from Benchmark Media on audio rules of thumb. - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 2Likes
  • 2 Post By vzphoneman
 
Thread Tools
post #1 of 4 Old 04-02-2019, 08:54 AM - Thread Starter
Advanced Member
 
vzphoneman's Avatar
 
Join Date: Jan 2009
Location: upstate New York
Posts: 719
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 149 Post(s)
Liked: 171
Interesting read from Benchmark Media on audio rules of thumb.

That is if you enjoy wading deep into the weeds .....

https://benchmarkmedia.com/blogs/app...ade9-198225429

The lazy man finds the easiest way ... Ben Franklin

Rouge Audio Cronus Magnum II integrated amp, Goldenear Technology's Triton 2+ speakers, Schiit Bifrost Multibit Dac, Technics SL-1200MK2 turntable with Audio Technica 440ml cartridge, Teac X-1000R reel to reel, custom computer as main music source
vzphoneman is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 04-02-2019, 04:10 PM
AVS Forum Special Member
 
CharlesJ's Avatar
 
Join Date: Jan 2006
Posts: 4,697
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 785 Post(s)
Liked: 533
Interesting, thanks. Some good take away was signal speed in wire and air., Usable JND.
CharlesJ is offline  
post #3 of 4 Old 04-05-2019, 11:54 AM
AVS Forum Addicted Member
 
gajCA's Avatar
 
Join Date: Mar 2009
Location: Sonoma County, CA
Posts: 18,417
Mentioned: 214 Post(s)
Tagged: 2 Thread(s)
Quoted: 8585 Post(s)
Liked: 5784
Quote:
Originally Posted by vzphoneman View Post
That is if you enjoy wading deep into the weeds .....

https://benchmarkmedia.com/blogs/app...ade9-198225429
I did find this interesting:

"If a speaker has a measured output of 90 dB SPL at 1 meter when fed with one watt, you can expect about 90 dB SPL at your listening position when driving your speaker with one watt.

Room reflections supplement the output of the speakers and compensate for the fact that you are more than 1 meter from your speakers.

If you are outdoors, this rule does not apply.

But, in a typical home listening room, the rule works reasonably well for a quick approximation."

Geoff A. J., California
gajCA is offline  
Sponsored Links
Advertisement
 
post #4 of 4 Old 04-05-2019, 01:02 PM
AVS Forum Special Member
 
alan0354's Avatar
 
Join Date: Oct 2013
Location: Silicon Valley
Posts: 2,257
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 1617 Post(s)
Liked: 418
Funny I am building a new amp with error correction like it described. This is not exactly a new idea, even the Book by Bob Cordell talked about it. It mainly used in Class AB amps to minimize crossover distortion like the article said in the link.


I am at the process to bring the amp up. THD is 0.001%@1KHz and 0.0025%@20KHz driving 4ohm load and at 60Wrms. I have to listen to it to determine whether it improves the sound. As spec wise, it is NOT better than the Amp I already designed and built and in use for over half a year. In fact the amp without error correction has lower THD and cleaner looking. This is a case that you can talk until your face turn blue on how good and how much improvement with new technology. BUT the measurement doesn't pan out at all. I'll have the amp up in a few weeks and listen to it.

Own designed power amp, own designed preamp, JM LAB Spectral 913.1 speakers, Rythmik F12SE sub.
Not hooked up: Nakamichi Stasis PA-7 power amp, Velodyne VA1210 sub, Kef Reference Series center, Kef Bookshelf speaker, Monitor Audio bookshelf speaker, Infinity rear speakers. Acurus 3X200W amp.
alan0354 is offline  
Sponsored Links
Advertisement
 
Reply 2-Channel Audio

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off