Inexpensive entry to the world of Tapped Horn subs...

[SpeakerScott]

I just realized I'd never posted the Hornresponse plots

[Brian Steele]

Originally Posted by SpeakerScott

Okay I was able to do a quick impedance sweep. Which took two hours, because Praxis was being weird. My thoughts:

1. It's even closer than I expected...even up to the higher order modes.
2. Looks like some bracing around the mouth might be in order...even for this sub.
3. Looks like the copper pole cap is doing it's job on inductance, though the higher than predicted impedance in the 300Hz to 2kHz is a bit weird.

Scott

That looks pretty good IMO. Did you do a t/s param check on the driver? Perhaps actual Le is a bit higher than spec'd, which would account for the higher than expected impedance above 100 Hz or so. It also looks like the resonance frequency for your horn came in just slightly lower than the sim, which isn't necessarily a bad thing .

[SpeakerScott]

Originally Posted by Brian Steele

That looks pretty good IMO. Did you do a t/s param check on the driver? Perhaps actual Le is a bit higher than spec'd, which would account for the higher than expected impedance above 100 Hz or so. It also looks like the resonance frequency for your horn came in just slightly lower than the sim, which isn't necessarily a bad thing .

No I didn't do a T/S check, I was just too impatient. I'm very happy with the agreement, closer than many I've seen. Though I did check and re-check dimensions in the model and in building it a bunch of times.

Scott

[Rullknufs]

What are the outside dimensions of the cabinet?

[katana2112]

I just reread thru the post...Congratulations on the girls!!!!! They sure change things...

[gychang]

SpeakerScott: what plate amp did u use?, good match?

gychang

[SpeakerScott]

Originally Posted by Rullknufs

What are the outside dimensions of the cabinet?

27" Tall, 23.75" Deep, 14.875" wide.

Or

68.58 cm * 60.325 *37.7825

[SpeakerScott]

Originally Posted by katana2112

I just reread thru the post...Congratulations on the girls!!!!! They sure change things...

You're telling me! Yikes. My house has exploded in pink and perfume.

[SpeakerScott]

Originally Posted by gychang

SpeakerScott: what plate amp did u use?, good match?

gychang

I use a BASH500 from Parts Express. I didn't build it into the cabinet though...its in a separate enclosure. I find amplifier matching to be an awkward term. It's enough power, sounds great and has the features I need. So, yes? It's a good match?


Scott

[J. L.]

Scott,

Do you happen to have a list of the sizes of the pieces illustrated in your cutlist layout diagrams.

The illustrations you provided are great, but unless I make a full size layout with pieces positioned as in your "relative position" illustration, there is no way for me to know (as an example) the size of the piece labeled as "9"

Thanks in advance... Joe L.