A friend of mine is planning on building enclosures for his Lii audio fast 10 drivers. He asked me about the enclosure design, and I could not give a good answer but suggested I'd try to ask here. These are probably very trivial questions for most of you.
Firstly, with the design below, would it be possible to place the vent hole at the backside...? I assume no, but would like confirmation.
Secondly, are there supposed to be sidewalls to that vent slot? My friend made some nice renderings to explain the alternatives. So should it be like this:
Or like this:
Thanks in advance!
Firstly, with the design below, would it be possible to place the vent hole at the backside...? I assume no, but would like confirmation.
Secondly, are there supposed to be sidewalls to that vent slot? My friend made some nice renderings to explain the alternatives. So should it be like this:
Or like this:
Thanks in advance!
Hmm, as drawn it's two chambers are tied together by a duct, so in theory shouldn't have a secondary vent.
Do you have a speaker program that can even sim it? If so, then try it in different places to find where, if any, it works best overall.
Yes it must have sides, so normally goes full width to use the cab's side panels.
Do you have a speaker program that can even sim it? If so, then try it in different places to find where, if any, it works best overall.
Yes it must have sides, so normally goes full width to use the cab's side panels.
Thanks, unfortunately we don't have a speaker program.
We also thought it would be logical to use the cab's side panels as side walls, but according to that drawing the slot clearly ends before the sidewalls.
Might not be the best cabinet design that one...?
We also thought it would be logical to use the cab's side panels as side walls, but according to that drawing the slot clearly ends before the sidewalls.
Might not be the best cabinet design that one...?
It looks somewhat similar to Visaton Solo 100 cabinet, so check it out if you need some guidelines. It possible to simulate such cabinets in Hornresp and with proper stuffing they work similar to damped TL.
Vent placement on the back shouldnt make significant difference, and full width is usual practice with slot vents.
Vent placement on the back shouldnt make significant difference, and full width is usual practice with slot vents.
Take the area of the rectangular vent and divide by the cab's width to determine the new vent's shorter height (all dims i.d.).
new slot height = 242*60 = 14520/340 = 42.706
new slot height = 242*60 = 14520/340 = 42.706
Hi,
I'm the friend Zleepy mentioned. The problem is that Lii Audio's data sheet doesn't match with the speaker element that I have (see attachments). So I don't have the required information to model the enclosure. So I don't know how to proceed. The speaker enclosure schematic in original post, is the only version that specifies Fast-10 (https://www.lii-audio.com/dt_gallery/plans-for-cabinets-crystal-10-fast-10/). The "crystal" is different version of this speaker element.
I'm the friend Zleepy mentioned. The problem is that Lii Audio's data sheet doesn't match with the speaker element that I have (see attachments). So I don't have the required information to model the enclosure. So I don't know how to proceed. The speaker enclosure schematic in original post, is the only version that specifies Fast-10 (https://www.lii-audio.com/dt_gallery/plans-for-cabinets-crystal-10-fast-10/). The "crystal" is different version of this speaker element.
Attachments
Greets!
OK, so what type/thickness wood are you going to use and then I'll just calculate the cab's gross Vb, subtract a bit for the driver, vent and some bracing to find basic box tuning (not sure ATM how the little vent might impact it), though typically with these type drivers it's tuned to Fs.
OK, so what type/thickness wood are you going to use and then I'll just calculate the cab's gross Vb, subtract a bit for the driver, vent and some bracing to find basic box tuning (not sure ATM how the little vent might impact it), though typically with these type drivers it's tuned to Fs.
Hmm. Lii's data [such as it is] has often been so inconsistent with itself that even in instances where they provide sufficient to do more than SWAG it, you're left wondering what, if any is actually representative. I take no pleasure at all in saying that, and if it's been addressed in their more recent units, so much the better. Sans that -I'd probably just shove them in the largest sealed or open-back box I could handle & try to dial it in with a variac / similar from there.
Alternative: if you don't want to invest in DATS or similar, download REW (free) get a couple of resistors (peanuts), and follow the jig setup detailed in its manual. Assuming you have a reasonable soundcard and a suitable lead you'll at least be able to measure the basic T/S values on a low voltage drive. https://audiojudgement.com/measure-thiele-small-parameters-using-free-software/
Alternative: if you don't want to invest in DATS or similar, download REW (free) get a couple of resistors (peanuts), and follow the jig setup detailed in its manual. Assuming you have a reasonable soundcard and a suitable lead you'll at least be able to measure the basic T/S values on a low voltage drive. https://audiojudgement.com/measure-thiele-small-parameters-using-free-software/