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XKi - X's ab initio Karlson 6th Order Bandpass
XKi - X's ab initio Karlson 6th Order Bandpass
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Old 29th November 2020, 07:09 AM   #1191
freddi is offline freddi  United States
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I tried to make my "sketch" of a 10 inch driver XKi more legible.

What do you think of the vent and front chamber shape? - it was suggested years back by XRK971 to use an 8 inch long vent for Delta10A. I might want to use this cabinet with the 10" "pro" Tymphany driver.

Besides the front chamber and vent, how would you do the taper panels and their starting gap?

With half inch material it should be about 13"x13"x17" tall
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File Type: jpg Tymphsny 10 K fix 4 web1.jpg (221.2 KB, 127 views)
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Old 29th November 2020, 03:40 PM   #1192
xrk971 is offline xrk971  United States
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XKi - X's ab initio Karlson 6th Order Bandpass
If you run a bass reflex calculator for the rear chamber and vent dimensions, that should work. No taper on vent, just straight parallel wall. One thing to be careful of is vent resonance frequency with longer vents. 8in long vent might cause a dip at 840Hz (1/2 wave). But usually not a problem as Karlson “W” is around there anyway.
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Old 29th November 2020, 04:47 PM   #1193
freddi is offline freddi  United States
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might it help any to cut the duct length to say 6 inches - ? - - - cut a "V" or "K" notch on its back side. - ? Shelf vents often tune ~15% lower than some vent calculators show.
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Old 29th November 2020, 06:11 PM   #1194
EddieT is offline EddieT  United States
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Freddi, I played your Steve Clarke link through my K5/XKi PA130 hybrids and it sounded pretty good. I am going to have to do some additional felt lining to reduce tunnel sound on some vocal passages.

Your proposed 10" cab makes for a neat sized cab, is it for guitar?

If I decide to modify my K8 (scaled from K12) I wonder if blocking the horizontal vent and adding a 2" PVC pipe duct would work . . . the cab is smaller so the PVC would have to have a downspout but that down section length could be an experiment . . . and maybe a K slot.

Last edited by EddieT; 29th November 2020 at 06:30 PM.
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Old 29th November 2020, 08:44 PM   #1195
sov is offline sov  Sweden
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XKi - X's ab initio Karlson 6th Order Bandpass
I had a listening session halfway through painting. The speakers have awesome bang and clarity for the buck. Here driven by B1K + ACA. I was surprised how well defined and low they get.

My woodworking skills have become better but need improvement. I had to do everything by hand without table saw.

I thought a report was in order for a thank you for a rewarding project.
Som pics in progress.
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File Type: png W5-2143 XKi listening session.png (742.1 KB, 105 views)
File Type: png W5-2143 XKi inside.png (766.8 KB, 102 views)
File Type: png W5-2143 XKi in progress.png (724.1 KB, 104 views)
File Type: png W5-2143 XKi behind front.png (569.0 KB, 100 views)
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Old 29th November 2020, 10:05 PM   #1196
freddi is offline freddi  United States
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sov. that's a beautiful build - good idea for damping material placement in the upper rear cavity too.

- did you have a powered circular saw? - - or literally a hand saw?

EddieT - yeah with Delta10A that should make a pretty good little bass cabinet. Would it help to more the "reflector" forwards on the shelf vent? (like in standard XKi builds such as sov's)

I'm liquidating all of my toys to try to survive month to month and hope sometime to get some hernia repaired.. - got one Kramer bass I'd like to keep.

There's also this "rock n' roll" bass

https://i.imgur.com/sqpPJHF.jpg

Last edited by freddi; 29th November 2020 at 10:08 PM.
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Old 29th November 2020, 11:31 PM   #1197
EddieT is offline EddieT  United States
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This guy gets a lot of E₂ (82.4Hz) into his work;
Come Together - Michael Chapdelaine - Video (solo fingerstyle guitar) cover - YouTube
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Old 30th November 2020, 08:46 AM   #1198
sov is offline sov  Sweden
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XKi - X's ab initio Karlson 6th Order Bandpass
Thank you. I have circular saw but it still har to get even distances.
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Old 30th November 2020, 11:38 PM   #1199
EddieT is offline EddieT  United States
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I think one of these little track saws would be good for sheet goods but a bit expensive unless one has other uses for it.

Click the image to open in full size.
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Old 1st December 2020, 01:33 AM   #1200
NegativeGhostrider is offline NegativeGhostrider  United States
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I got a Graff Termit blade for my cheap Harbor freight angle grinder. Turns it into one of those mini saws for about a third of the proce, and it cuts nice and clean through thin Ply.
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