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Ricci last won the day on August 26

Ricci had the most liked content!

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About Ricci

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    Super Bass Overlord

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    Louisville, KY
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    Bass...Subwoofers, audio, video, drums, recording, craft beer, performance arts, poetry...

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  1. I don't use a HPF with sealed subs either in testing or my systems. I'm careful during testing to not push the level too high and in my systems I try not to have enough amp on tap to bottom the drivers with the box size used.
  2. I'd echo SME here. The Othorn is still a very good sounding design but I'd consider the Skram instead. It's smaller, lighter, has flexible tuning options and is simpler to build. Output and SQ should be the same if not a bit better due to the more extended top end. Issues don't start till higher in frequency that the Othorn.
  3. You could do something similar and shrink the cabinet and slot volume somewhat to better fit the 18". The 18 doesn't need as much airspace to work in.
  4. I'm not entirely sure what it would be for the SI 24's. The cone holds a lot of volume but the surround is huge and protrudes a lot unlike the pro drivers. Also the frame is really thick on these and it'll be front mounted which moves the whole assembly forward quite a bit. It may actually be less than a back mounted 21" pro. This is probably a good generic guess. AVH...300-350cm2 for each driver should be added to S2. This is used rather than Atc/Vtc. It has a better track record, in my offset designs at least. Also the AE drivers have extremely low inductance. I doubt the complex inductance modeling will make much difference at all on them. I wouldn't worry about it. Yes the inductance modeled correctly would be slightly more accurate but it'll be a very small difference on these. These are the exception rather than the rule for bass drivers.
  5. Are your FR measurements above after EQ? If so do you have any from before EQ? The waterfall indicates the decay rate of the sub in your room. It looks like you have a bit of a resonance at 27Hz, 42Hz. Not bad though most rooms do. Seems like you might have a bit of ground hum at 60Hz...
  6. Hello Enrique... What is your budget for the subwoofer? What would be a maximum size you would like for the sub? LxWxH?
  7. I see. Very cool. Have you had a chance to fire them up yet? Any issues with vibration?
  8. You mean the 18DS115? In this cab, or? I'd recommend the 21 for this cab.
  9. Also...To reiterate, most of the parameters are directly linked to, affected by and calculated from others. None of them really exist in a vacuum. To further complicate things these are known as small signal parameters and many of them will shift greatly once the driver is subjected to large signals. Subs in particular operate with what would be considered large signals.
  10. I wouldn't bother with triple thick baffles. Most of the vibration reduction would be from coupling the drivers through the cabinet walls in the opposed arrangement. Double thick baffle is good for counter sinking, but not really needed for strength in most cases.
  11. This is from the MK1 HS-24 so I'm sure the MKIII has had some tweaks made. In the absence of the complex inductance data for the MKIII I'd suggest using these specs. It'll be closer than not modeling semi-inductance as it's pronounced in these Plug these into HR by double clicking on the LE box. It is activated once the label turns green. Measured Complex Inductance Parameters Re' 3.572 Ω Leb 0.951 mH Le 14.868 mH Rss 74.784 Ω Ke 0.451 sH
  12. SME answered well. It's complicated. With almost any driver the performance starts to degrade as it is pushed to higher excursion. This really cannot be answered with a single number like xmax that mfg's try to use. The 21Ipal will go to about 30mm one way if not a bit more if you REALLY hammer on it but it does not sound good by then. It gets cleaner at 20mm one way, and again much cleaner at 10mm one way than 20mm.
  13. Cool!!! How thick is the acrylic? How is it going to be fastened to the wood? I don't see any screws?
  14. As long as the volume of the ported section and horn section stay the same. Also the port area and length must stay the same. The horn length also must stay the same. The Beyma drivers are supposed to be good but they are a bit light on motor force for these cabs.
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