Grey text on a black field is unreadable. Please change.Finally got my first test review page up. Kef's Q100.
Grey text on a black field is unreadable. Please change.Finally got my first test review page up. Kef's Q100.
Grey text on a black field is unreadable. Please change.
The existence of a plug that blocks a significant portion of the exit makes the KEF HF unit a compression driver by default, though with a low compression ratio (I believe it is roughly 2). This gives a slight increase in high-frequency efficiency.KEF's plug is in front of a normal dome driver in a coaxial system
How about a chart that uses thin lines except for thicker ones on the 30/60/90 curves?
The existence of a plug that blocks a significant portion of the exit makes the KEF HF unit a compression driver by default, though with a low compression ratio (I believe it is roughly 2). This gives a slight increase in high-frequency efficiency.
Grey text on a black field is unreadable. Please change.
They are related in only a loose sense: their function is to correct for undesirable wave propagation.Phase shields in alu dome tweeters are for the same purpose, eg.
I appreciate that! Glad you found the information useful. Just out of curiosity, how did you find my old site? Were you a forum member on diya, TT, diyma? I used to post the links there. Just curious if I know you from another forum.
For those of you who are in to car audio, know that my background is indeed car audio. So a lot of my old reviews are focused on car audio drive units. I also recently wrote a review for the miniDSP CDSP 8x12 with Dirac Live that some of you may find useful.
https://www.erinsaudiocorner.com/electronics/minidsp_cdsp_8x12_with_diraclive/
Hi Erin, I remember mulling over your site, and all the hard work you had done. Welcome back. Are you on the midwest audio club forum? A lot of the techtalk people spend time on there.
Could you explain what the main differences are between home hifi and car audio?For those of you who are in to car audio, know that my background is indeed car audio. So a lot of my old reviews are focused on car audio drive units. I also recently wrote a review for the miniDSP CDSP 8x12 with Dirac Live that some of you may find useful.
https://www.erinsaudiocorner.com/electronics/minidsp_cdsp_8x12_with_diraclive/
Could you explain what the main differences are between home hifi and car audio?
Yes, the listening environment is completely different ofcourse. And because of that the design goals are harder to achieve and/or design elements become more critical.As far as goals, hi-fi in the home and hi-fi in the car are the same: to achieve a quality reference playback system.
The problem with the car, however, is it is a terrible environment. Highly reflective, not much room for positioning of speakers in order to eliminate modal issues, assymetrical speaker layout wrt main listening position (MLP). A specific example is inter-aural cross-cancellation. Home audio setups have the luxury of putting the listener in the center of a mostly symmetrical environment and speaker setup. In a car you sit to one side of the speaker setup. Therefore, the apparent source width is skewed between the sides and the HRTF is nowhere near the same (in a car with a driver on the left, the angle from the MLP to the left side speakers is usually no more than 20 degrees and the width on the right is typically > 45 degrees).
It's funny, though, that thanks to car audio I have a pretty high understanding about sound science and DSP configurations because in order to get great sound in a car you have to understand various facets of sound reproduction. Unfortunately, there's not much documented in this realm other than a couple white papers (one from Volvo/Dyn and one from JBL) and some things aren't as easily transferred from the home environment to the car environment.
I could go on and on. I've been messing with hi-fi car audio for a very long time now and I have to say that it is easily the most challenging environment but thanks to that it has taught me to learn about acoustics and made me a better person for it. Heck, Geddes wrote the whitepaper stressing the importance of spatial averaging when he worked for Ford Automotive.![]()
Awesome, just as I thought. Do you use the Scan-Speak 10F/4424G00 for midrange? I saw some Frog Audio drivers tested on your old site, they seemed very lineair!Gotcha. Yea, there's no reason why you can't use car audio drive units in a home. Home audio drive units like Scanspeak, Tang Band, Vifa, etc are commonly used in car audio. In fact, I'm using scanspeak beryllium tweeters in my car right now.
If you are interested, here's a short video one of my friends made of me at car audio finals this year in Louisville, KY. He did about 10 other videos highlighting people's systems if you want to look at his other vids.