Brian Steele
Seasoned Veteran
Last Activity: Yesterday, 10:32 PM
Joined: 08-14-2007
Location: Grenada, West Indies
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FWIW, running with a Q that high for a small sealed speaker that's going to be suspended in open air outdoors is not such a bad idea. It might even sound... -
Replacing the series resistor with one with a significantly smaller value looks like a great way to end up blowing the tweeters. I wouldn't do it. As...Leave a comment:
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interesting patent. The image at the link is prior art though. The description of the invention suggests that one port will be at the front of the enclosure...Leave a comment:
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Yup, we may be on to something here. If you have a closer look at the second image I posted, you can see the peaks at the pipe resonance harmonics and...Leave a comment:
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The first pipe resonance will occur at F1=c/(2*L+0.8*d)
Where
c=speed of sound (m/s)
L = vent length (m)
d = vend...Leave a comment:
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I use REW's RTA set to 1/6th octave smoothing and "forever" averaging, and configure REW to use the "Stereo Mix"...Leave a comment:
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When I run my my spectrum analysis "trick" on that track (Ok, the Deezer version of that track), it suggests that there's actually too much...Leave a comment:
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Not that I know of. Just out of interest, over a year ago I mentioned to Deezer support that including something like that in their player would be a...Leave a comment:
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What you need (what we all need) is content EQ, not system EQ, which is a considerably more feasible option these days, as unless you're a member of the...Leave a comment:
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GD of 30ms and above actually sounds a bit high, unless you're referring to very low frequencies.
4th order BP designs can be fun builds,...Leave a comment:
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That sounds a bit like the old "classical" approach to TLs that's been obsolete since Martin King's work on the subject, if not earlier. Now...Leave a comment:
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I thought that a worked example in Hornresp might help here. I've attached a few images for a Hornresp sim of the PA310 12" pro audio driver in...Leave a comment:
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If the impedance response changes, that means that the impact of the enclosure on the driver's operation has also changed, and if that's at Fb, that means...Leave a comment:
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A few more things:
1. If the simulation program doesn't include a feature that accounts for the delta difference in distance between the...Leave a comment:
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I'd try something a little smaller - 27.5 l tuned to 42 Hz, for example. The GD curve is a bit better, and passband power handling won't be reduced that...Leave a comment:
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The FR graph shows the combined response of the terminus and the drivers, so theoretically the "anomalies" will appear in the overall response....Leave a comment:
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