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Old 17th June 2011, 10:56 PM   #281
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Hi Chaps,
Thanks for helping out re the Winsd (rather than zip). I'm a bit pushed for time, replying to posts in-between other work, so glad of the help.

I quickly used a couple of on-line box calculators and got 11 litres. But freely admit, they won't be as advanced as Win. All the same I've found that Win, Bass-Box and similar can be conservative, so if some diy folks want to knock up some rough larger boxes to experiment, I'd love to the feedback on their outcomes. That's what I trying to suggest.

Remember, the fun part can be about experimenting. Effectively, Markaudio drivers are sort of in a state of "semi permanent" experimentation. Matsubara san likes constant experimentation. I quite like that way of thinking. Its worth remembering Matsubara san's credentials, He's the farther designer of the original Fostex FE series. For example, 4 years back, who'd of though a single cone driver could break 25-kHz or even the 30-kHz barrier without using a coax, whizz or other bolt-on's? So I'm trying to encourage diy guys to think "outside the box" (excuse the pun). That's how the Pensil's were born (Scott did a great job).

Cheers

Mark.
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Last edited by markaudio; 17th June 2011 at 11:17 PM. Reason: additional
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Old 17th June 2011, 11:39 PM   #282
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Quote:
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That's how the Pensil's were born (Scott did a great job).
Speaking of Pensils... (same file, 2 formats, grab the pdf, look at the gif)

Click the image to open in full size.

dave
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Old 18th June 2011, 12:11 AM   #283
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Dave, see the Alp 7.3 cabinet has gained ~2 inches in depth - more bass can be expected?
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Old 18th June 2011, 02:58 AM   #284
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Scott?

dave
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Old 18th June 2011, 03:28 AM   #285
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Hi Dave,
Nice work on the Pencil drawings - many thanks
Mark.
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Old 18th June 2011, 04:43 AM   #286
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Nice work on the Pencil drawings
I wouldn't have anything to draw without Scott's input

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Old 18th June 2011, 05:29 AM   #287
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I wouldn't have anything to draw without Scott's input
dave
Totally agree, gets my vote
Thx
Mark
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Old 18th June 2011, 08:18 AM   #288
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No more LF, they're tuned the same way; the new unit just requires a little more Vb with this alignment.
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Old 18th June 2011, 09:04 PM   #289
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If a TL could get the F3 of the new chr 70 down to about 35 HZ, how many octaves (total range) would that equal in total?
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Old 18th June 2011, 09:30 PM   #290
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An octave below resonance is probably not realistic... F10 (and consider room gain, is likely possible) 40-20k is 9 octaves.

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