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)...
...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.
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.
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.
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)
- The crossovers and cable are almost finished - jeffreybehr 22:34:53 01/5/16 (0)
- For fantja--i just started building an amppad for my new c-j ET250S... - jeffreybehr 18:06:32 10/30/15 (0)
- Just received a new c-j ET250S poweramp. - jeffreybehr 01:43:45 10/23/15 (0)
- FINALLY decided what, exactly, to do about rewiring... - jeffreybehr 19:40:08 10/16/15 (0)
- A new pic of full system frontend - jeffreybehr 17:18:22 09/7/15 (6)
- RE: A new pic of full system frontend - fantja 12:05:44 10/2/15 (4)
- Not yet. I'll soon be finishing the x-overs and recabling... - jeffreybehr 17:39:49 10/5/15 (3)
- RE: Not yet. I'll soon be finishing the x-overs and recabling... - fantja 02:57:04 10/6/15 (2)
- RE: Not yet. I'll soon be finishing the x-overs and recabling... - oilmanmojo 18:35:41 10/6/15 (1)
- RE: Not yet. I'll soon be finishing the x-overs and recabling... - fantja 20:47:19 10/6/15 (0)
- RE: A new pic of full system frontend - fantja 18:13:43 09/7/15 (0)
- The Avantis are keepers and are now worth new super-HQ wire... - jeffreybehr 00:27:54 09/1/15 (1)
- RE: The Avantis are keepers and are now worth new super-HQ wire... - fantja 03:06:55 09/7/15 (0)
- Have decided to replace the original, wrong tweeter x-over - jeffreybehr 01:47:39 08/23/15 (4)
- After listening to and tweaking values in the FOF... - jeffreybehr 01:32:36 08/26/15 (0)
- RE: Have decided to replace the original, wrong tweeter x-over - fantja 05:40:39 08/23/15 (2)
- A pic for fantja - jeffreybehr 19:43:48 08/23/15 (1)
- RE: A pic for fantja - fantja 18:52:34 08/25/15 (0)
- Replaced the lower-MR choke with a 12g. Solen - jeffreybehr 11:51:17 08/19/15 (0)
- For fantja...a few more pics - jeffreybehr 23:28:25 08/8/15 (1)
- RE: For fantja...a few more pics - fantja 08:16:52 08/9/15 (0)
- About that tweeter surround? - M3 lover 13:18:37 08/1/15 (1)
- The pads were made by Jim Goulding of diffractionbegone.com... - jeffreybehr 21:01:22 08/2/15 (0)
- What's your crossover frequency/slope to the Neo 3s? - Brian H P 10:42:39 07/29/15 (2)
- I believe the original MR/tweeter filter point is 2.7K, but... - jeffreybehr 16:01:20 07/29/15 (1)
- The Neo3 is a "true" 4 Ohm tweeter - Brian H P 17:01:53 07/29/15 (0)
- RE: Audio Physic Avanti - M3 lover 10:33:35 07/29/15 (6)
- TY. Herron was working on a large full-range speaker years ago... - jeffreybehr 15:05:10 07/29/15 (5)
- Herron's large full-range speaker - M3 lover 11:42:26 07/30/15 (4)
- Unimproved components? Yes and no. - jeffreybehr 12:17:45 07/30/15 (3)
- RE: Unimproved components? Yes and no. - fantja 14:10:43 07/30/15 (2)
- TY again for your kind comment. Here's another of a part of a J2 amp. - jeffreybehr 18:17:05 07/30/15 (1)
- RE: TY again for your kind comment. Here's another of a part of a J2 amp. - fantja 18:31:44 08/1/15 (0)
- RE: Audio Physic Avanti IIIs back in my system - fantja 05:19:18 07/29/15 (3)
- TYVM. Here's a link to lots of pics, some of which are rather old. - jeffreybehr 16:12:29 07/29/15 (2)
- RE: TYVM. Here's a link to lots of pics, some of which are rather old. - fantja 19:09:41 07/29/15 (1)
- TYVM again. Of course, most of that gear is gone. - jeffreybehr 22:06:57 07/29/15 (0)