https://www.timothyclink.com/ 2026-06-06T01:14:34+00:00 https://www.timothyclink.com/ https://www.timothyclink.com/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2026-01-30T21:01:46+00:00 tim (tim@undisclosed.example.com) https://www.timothyclink.com/doku.php?id=namespace:web_based_matt_tool&rev=1769806906&do=diff Web Based MATT Tool The Musical Articulation Test Tones (MATT) is a modulated sweep signal developed by Art Noxon at Acoustic Sciences Corporation to test room acoustic performance. About MATT test More about MATT test The signal can be played through a high fidelity sound system to reveal issues with a room's acoustics. This signal can be listened to from the listening position to reveal audible issues, and it can also be recorded and then analyzed with special software to find out what fr… text/html 2026-01-21T02:34:17+00:00 tim (tim@undisclosed.example.com) https://www.timothyclink.com/doku.php?id=namespace:the_sound_of_higher_directivity_speakers&rev=1768962857&do=diff The sound of higher directivity speakers Reading this article from Sausalito Audio got me thinking about what it is that I like about horn speakers for hifi. Interpreting "Spinorama" Charts In that article they point out that narrower dispersion speakers are generally not preferred, with their sound being described as more colored and less open sounding than speakers with wider dispersion. This has been my impression as well. But I have learned to hear past the coloration effect of narrow dir… text/html 2026-01-21T02:23:09+00:00 tim (tim@undisclosed.example.com) https://www.timothyclink.com/doku.php?id=namespace:speaker_directivity_and_room_eq&rev=1768962189&do=diff Speaker Directivity and Room EQ How do you EQ an exponential horn? That's what this entry is about, although it could apply to any speaker or speaker driver that exhibits increasing directivity at higher frequencies. Back around 2017 I completed a pair of large corner horn speakers. These incorporated an exponential midrange horn with an exponential tweeter horn mounted coaxially. The reason for this choice was a goal of maximal efficiency and minimal speaker membrane motion, which was taken t… text/html 2026-01-03T01:55:31+00:00 tim (tim@undisclosed.example.com) https://www.timothyclink.com/doku.php?id=namespace:horn_loading_is_all_about_reducing_exit_shock&rev=1767405331&do=diff Horn Loading is About Reducing Exit Shock Horns are known to increase the efficiency of speaker drivers. It is also known that for lower frequencies the horn has to be bigger, both in its length and the size of its mouth to properly “load” the longer wavelengths of lower frequencies. So how is it that the efficiency is increased? What is being lost when a direct radiator tries to make sound without a horn or waveguide? The answer, I believe, is that the horn drastically reduces exit shock, or d… text/html 2026-01-03T01:32:59+00:00 tim (tim@undisclosed.example.com) https://www.timothyclink.com/doku.php?image=namespace%3Apt_waveguide_vs_1_inch_pvc_1_foot_long.jpg&ns=namespace&rev=1767403979&tab_details=history&media_do=diff&do=media <img src="https://www.timothyclink.com/lib/exe/fetch.php?w=500&amp;h=500&amp;tok=c0a44c&amp;media=namespace:pt_waveguide_vs_1_inch_pvc_1_foot_long.jpg" alt="pt_waveguide_vs_1_inch_pvc_1_foot_long.jpg" loading="lazy" width="500" height="500" />