Home Speaker Asylum

General speaker questions for audio and home theater.

Audio Physic Avanti IIIs back in my system

I purchased a pair of preowned Audio Physic Avanti III speakers in 2011. I improved them with better parts in the crossovers, replacing the MR's HP filter (cheap plastic-film caps)...
 photo 06Sep2010_outboardx-over_1280w.jpg
...with a high-quality cap in front of the poweramp, replacing internal wiring with very-high-quality stuff, removing the woofer filters from the boxes, rewiring the four woofers, and actively filtering and amping the bass. The sounds of the MR got so good, I began to notice the grittyness of the treble (from the ring-radiator tweeter) so I replaced that with a BG Neo-3 PDR mag-planar tweeter.
 photo 04Apr2011_Neo3wpadall3drivers_1280h.jpg
Overall, the top-seven octaves sounded much better, but I never got the bass sounding as good--as well integrated--as the rest, so I moved on to Vandersteen 5As. I used and loved them for a couple years, and last year I bought a pair of excellent-sounding Serenity Acoustics Super-7s.
 photo 2014Nov11_musicroom_1500w_zpsc13eed7e.jpg
Drove those with a pair of Nelson Pass's FirstWatt J2s, and that was a match made in heaven.
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Hmmm...what happened to the rest of my post?
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and again? This forum suddenly has the dropsies.
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So let's try again.
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Well, at 71 years old, it's time for me to downsize, so off the wall came the banished-for-four-years Avantis and into the system they went.
 photo 2015Jul22_A-IIIs amp VCC_1200w_zpsdkgvwyid.jpg

 photo 2015Jul22_plateamp amp eq_1200w_zpsxhoulzzc.jpg
Drove the MR/treble with the 60-into-4 J2s and the woofers with a pair of inexpensive plateamps my goodbuddy suggested and loaned me, and BINGO! the system quickly sounded better than I ever remember it. Lack of integration of bass and lower-MR was its unsolvable problem four years ago, but did those plateamps with their 2nd-order filters ever solve that!

The system has a dB or two too much treble so I'm playing with 1- and 2-Ohm resistors driving the tweeter, and I'm also driving the MR driver* with two Ohms to warm the tonal balance a tad, but right now I'm about 95% convinced the Avantis will stay in the system. I have L-pad resistors on the way to get the filter points back where they were.

*The pair of visibly identical MR drivers on the front panel aren't identical. That immediately below the tweeter is the MR driver; it has a double-strength magnet system and operates from c. 100HZ to maybe 3KHz. The one lower on the baffle is driven from 100Hz and is rolled off around 500Hz.



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Topic - Audio Physic Avanti IIIs back in my system - jeffreybehr 22:19:46 07/28/15 (37)

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