I had a day off from work and started to install FA123 amps. Piccies in the album!
Avalanche AS1 modernization - Google Photos
Avalanche AS1 modernization - Google Photos
Full passive. Original drivers were damaged.
New drivers selected to match existing holes, box size and budgget:
Tweeters: Seas Excel E0006-06 T25CF001
Midwoofers: SB Acoustics MW13P-8
Woofers: Seas Prestige H1192-08 CD22RN4X
Measured response: on tweeter axis, complex sum of far, near and ports
Cabinets went through expensive restoration - look now better then new.
New drivers selected to match existing holes, box size and budgget:
Tweeters: Seas Excel E0006-06 T25CF001
Midwoofers: SB Acoustics MW13P-8
Woofers: Seas Prestige H1192-08 CD22RN4X
Measured response: on tweeter axis, complex sum of far, near and ports
Cabinets went through expensive restoration - look now better then new.
Attachments
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Now the sound should be OK, LR2 at 400/3500Hz. Unfortunately I must make measurements in a too small room that has lots of reflections and modes. On the other hand that helps closed box woofers with natural boost down below.
More pics in album Avalanche AS1 modernization - Google Photos
More pics in album Avalanche AS1 modernization - Google Photos
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I got the Yamaha WXC-50 yesterday and now the bedroom system is finished.
TV via optical, phone/notebook via Bluetooth and Spotify premium via wifi. Spl goes high enough without gain boost in FA123. MusicCast is pretty nice with many optional settings, it needs more learning. I don't want multiroom, but my living room RX-V 685 could be coupled.
TV via optical, phone/notebook via Bluetooth and Spotify premium via wifi. Spl goes high enough without gain boost in FA123. MusicCast is pretty nice with many optional settings, it needs more learning. I don't want multiroom, but my living room RX-V 685 could be coupled.
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Some more fine tuning of dsp settings done. W/M xo now at 300Hz LR2. It's really difficut to get valid measurements indoors, but that'll have to do. Mixed set of nearfield, 1m and spot...
Room mode at 30Hz is major because it is longitudinal and speakers are in front corners - and will stay. Closed box woofers get dramatic boost, but I can call that "bottom oomph" and be happy.Didn't tame it down at all!
Wavelet shows modes well, and look how different they look when mic is moved 60cm! Measurements taken at 3 different mic positions around spot.
Link to Google files, go to bottom!
Room mode at 30Hz is major because it is longitudinal and speakers are in front corners - and will stay. Closed box woofers get dramatic boost, but I can call that "bottom oomph" and be happy.Didn't tame it down at all!
Wavelet shows modes well, and look how different they look when mic is moved 60cm! Measurements taken at 3 different mic positions around spot.
Link to Google files, go to bottom!
Attachments
Inspired by this hifijim's thread https://www.diyaudio.com/community/threads/vituixcad-simulations-with-ideal-drivers.380658/
I made some Edge sims of the double baffle in my modified Avalanches.
Edge doesn't support edge contours, but gives nice overlays of different setups. Dimensions in these sims aren't exactly right, but give and idea of what happens. Measurements of mid and tweeter (with serial cap) without eq and xo on-axis response shown too
AS1h album link https://photos.app.goo.gl/uBqYxH1G86dHJGfZ6
I made some Edge sims of the double baffle in my modified Avalanches.
Edge doesn't support edge contours, but gives nice overlays of different setups. Dimensions in these sims aren't exactly right, but give and idea of what happens. Measurements of mid and tweeter (with serial cap) without eq and xo on-axis response shown too
AS1h album link https://photos.app.goo.gl/uBqYxH1G86dHJGfZ6
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I have been promoting "good'ole high F LR2 crossover here and there...
Here is a good example, Mission 770 loudspeaker, 2-ways 5000/pair, LR2 xo at 2,9kHz
https://www.stereophile.com/content/mission-770-loudspeaker
"Conclusion
Traditionally, a reviewer lists a loudspeaker's performance in specific regions: "The bass was ..., the midrange was ..., the high frequencies were ..., the stereo imaging was ..., etc." This proved more difficult to do with the Mission 770 than I had anticipated, because the loudspeaker's sonic character was in some ways more than the sum of its parts. The highs didn't call attention to themselves, the bass was well-extended and articulate, the stereo imaging was sufficiently well-defined. But all through my time with the Missions, I kept returning to that warm, detailed, and musically involving midrange. That's where the 770 excels, and that's why I recommend it."
And here vertical dispersion of my Avalanche with LR2 at 3500Hz. Notice how null changes with angle - PIR gets smoother!
Here is a good example, Mission 770 loudspeaker, 2-ways 5000/pair, LR2 xo at 2,9kHz
https://www.stereophile.com/content/mission-770-loudspeaker
"Conclusion
Traditionally, a reviewer lists a loudspeaker's performance in specific regions: "The bass was ..., the midrange was ..., the high frequencies were ..., the stereo imaging was ..., etc." This proved more difficult to do with the Mission 770 than I had anticipated, because the loudspeaker's sonic character was in some ways more than the sum of its parts. The highs didn't call attention to themselves, the bass was well-extended and articulate, the stereo imaging was sufficiently well-defined. But all through my time with the Missions, I kept returning to that warm, detailed, and musically involving midrange. That's where the 770 excels, and that's why I recommend it."
And here vertical dispersion of my Avalanche with LR2 at 3500Hz. Notice how null changes with angle - PIR gets smoother!
Polish site tested a very similar 3-way active speaker from Dynaudio. Nice curves!
https://audio.com.pl/testy/stereo/kolumny-glosnikowe/3555-dynaudio-focus-50
Wireless (except power cable), active, dsp with Dirac, closed box bass, no waveguide - roughly 10.000€/pair - well worth the money IMO!
https://www.dynaudio.com/home-audio/focus/focus-50
https://audio.com.pl/testy/stereo/kolumny-glosnikowe/3555-dynaudio-focus-50
Wireless (except power cable), active, dsp with Dirac, closed box bass, no waveguide - roughly 10.000€/pair - well worth the money IMO!
https://www.dynaudio.com/home-audio/focus/focus-50
2x8" WMTMW https://www.dynaudio.com/home-audio/confidence/confidence-60#tech-specs - 50.000€/pair
- 1,6m high
- 66kg
But these concepts give best value for diyers!
- 1,6m high
- 66kg
But these concepts give best value for diyers!
I took the tunrntable and measurement gear to bedroom and tuned dsp settings a little. MT xo changed to 2500hz LR2 with some eq tuning. o-90 deg polars were taken at 80cm distance and I used here 10ms gating , so response below 1kHz has artefacts. Mic height was between M and T. No room response measurements this time.
I use LR2 xo, which gives less than smooth horizontal response 2-4kHz. 4,5kHz has baffle edge interferences form the narrow sub-baffle. 26mm textile dome has high directivity above 12kHz. I have no interest to try to make response better, because speakers positioning in the room gives much more problems that cannot be fixed.
Measurements with REW shown with smoothing 1/24, traced with 1/6 to VCAD2.
I use LR2 xo, which gives less than smooth horizontal response 2-4kHz. 4,5kHz has baffle edge interferences form the narrow sub-baffle. 26mm textile dome has high directivity above 12kHz. I have no interest to try to make response better, because speakers positioning in the room gives much more problems that cannot be fixed.
Measurements with REW shown with smoothing 1/24, traced with 1/6 to VCAD2.
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It is snowing again and I have a day off from work. I was thinking about testing some masking to smooth the midrange, but instead decided to jus make some eq changes and shift MT xo to 3kHz LR2 acoustic.
These speakers are used only for farfield listening, in not so optimal locations. So, ultimate smoothness of response is not needed. The added panel I made for new drivers is making some unavoidable edge interferences that destroy smooth DI. Stone baffle width is 26cm, added baffle is 14cm.
Let It Be
These speakers are used only for farfield listening, in not so optimal locations. So, ultimate smoothness of response is not needed. The added panel I made for new drivers is making some unavoidable edge interferences that destroy smooth DI. Stone baffle width is 26cm, added baffle is 14cm.
Let It Be
