I pick efficient and as low as possible, under 200 liters pr. box.
Interesting concept. I haven't come by this one before. In the SB1000z you posted in #57, the drivers seem to be mounted close to the mouth of the OD horn and with the magnets in the chamber. Do you have an example of this venturi port driver concept?
BIC speakers used what they patented as a "venturi port" sometime in the 1970s or 1980s, they still use it, though too small to put a speaker in.
Efficient and low = >300L.
What F3 do you want?
What dB do you want at 2.83 volts?
Are there any ‘benefits’ to having the driver ‘in’ the port? (I say this while having two dozen tapped TQWT s and still don’t really ‘know’)
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Cooling / Heat Transfer / Less Complexity to Build / Easier to Assembly / No removable panel
You can choose your option.
I would dearly like to know how to model this alignment. Is it a tapped horn? Bill Fitzmaurice has a similar design (his Omni 12 and 15), and they certainly pump out some low end. There have also been some commercial bass guitar cabinets that have a tapped reflex port, which by all accounts sound very big for their size.
Whenever I model them as a tapped horn, they model like absolute rubbish. Perhaps I am doing something wrong.
It's a simple Band Pass 6th order Series or Tapped Horn.
Check the models below:
BP6S2
https://freeloudspeakerplan.rf.gd/pages/bp6s2.htm
TH-T18
https://freeloudspeakerplan.rf.gd/pages/th-t18.htm
Besides all those names, It's just about defining pipe length between the two chambers and adding flare or not in the pipe/chamber.
Sometimes people just create a layout of the same thing and give it a different name. In the core it's the same thing, different layouts help to better achieve different ratios from each parameter witch at the end can benefit some drivers to improve the output performance.
Looks like the port is big enough for the driver to fit in, so, port noise will probably not be a problem for this layout, motor / suspension noise, you need to consider at what driver displacement, lets consider Xmax, in that situation what would be the output SPL from the box? If they are 12dB different or higher in the same frequency range, it may not be a problem also, driver is also orthogonal to the port.
it doesn't look as a disaster for this particular case.
Booger....I told you to quit the LSD!!!
(At least when you post here!!)
Gezzzz!!!
I can't babysit you 24/7🤣🤣🤣
@maxolini, I thought you saiD you were lactating? How can you type and pump
Milk at the same time? 😝
Milk at the same time? 😝
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@Booger weldz , cause I told you to wear adult diapers (extra absorbent) 😂, it's not fair that your family need to clean up your mess.
I can call 911 so they take you to the mental hospice before you make a mess again!!
🤣🤣🤣
I can call 911 so they take you to the mental hospice before you make a mess again!!
🤣🤣🤣
What do you think a Tapped Horn is?
The whole enclosure is the port, from throat to mouth.
How about less cone movement per a given voltage vs sealed and BR enclosures.
Lower distortion is your magic.
Combining the front and back wave of the driver is your SPL.
Go to data-bass.com. There is plenty of proof there.
You like to create sawdust. Build a sealed, BR, and BP enclosures with the same F3 and driver. Measure them and then there's your proof #2.