Hey Dave, hope your recovery is going as well as possible!
Not meant to per se, Hornresp needs to be loaded, text file
Frankly, HR [freeware] has become the default program for so many here and around the net like WinISD, MJK's once was that I wish it was ~mandatory for folks wanting basic designs plus most pipe/horn types to at least view others speaker alignments/suggestions rather than having to [re]post various details.
All dims I.D.:
H = 106.7 cm
CSA = 280.32 cm^2
driver = 22.4 cm [0.21 offset]
vent = 90.48 cm [0.848 offset]
Av = 38.9 cm^2 [7 cm dia.]
Lv = 11 cm
That said, this is a design for someone else and after all these years, still can't quickly convert metric to Imperial, so didn't notice it being shorter [designed for super tweeter] than the norm [~38"/ 96.5 cm driver/floor] so will post it later.
GM
No. Coating the cone is not reversible.
i have been doing this on drivers since the late ‘70s and have had few fails (with more experience, none in the last decade or more).
It will reduce the self-noise of the paper cone, locking the surface fibres together in a matrix, but it is important to use as little as you can get away with or some top will be lost. And often people will thin the modPodge too much which can wrinkle some paper cones.
I have no trepeidation about doing it, and use the technique on almost all paper cones.
dave
i have been doing this on drivers since the late ‘70s and have had few fails (with more experience, none in the last decade or more).
It will reduce the self-noise of the paper cone, locking the surface fibres together in a matrix, but it is important to use as little as you can get away with or some top will be lost. And often people will thin the modPodge too much which can wrinkle some paper cones.
I have no trepeidation about doing it, and use the technique on almost all paper cones.
dave
Dave
Have you been coating A12P second gen?
I have coating some paper cones. I have use 2 compent Araldit
and thinner.
A12P is expensiv in Europe.
Have you been coating A12P second gen?
I have coating some paper cones. I have use 2 compent Araldit
and thinner.
A12P is expensiv in Europe.
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I have done 2 pair of A12p, 2 pair of A12pw, and many, many more A10p. Coating 1st step in EnABLing them.
Jeff’s A12.2PeN (he as them in SuperPensils)
dave
Jeff’s A12.2PeN (he as them in SuperPensils)
dave
Although GM's ML-TL appears to be a very real-estate friendly design for I'd think a small'ish room. However, given what P-10 said WRT driver liking big boxes for bass and most out of mid-range, I fail to see the point of GM's design.
Can we get some more feedback on the intended use and how it worked out?
It's a good, compact MLTL. Not a lot else to say, the usual conditions apply as can be noted in the Hornresp sim. Relatively low excursion, solid output to the mid-40s or so with a well-controlled rolloff.
Looks fine to me. FWIW, dims aren't that critical; if I were to build one I'd be rounding everything off at nearest 1/4", erring on the large side. 😉
GM
Did some sims with 0.349, 0.424 offsets and once again, HR doesn't really like these type Vas, Fs, Qts ratios, so don't sim 'pretty' looking taller MLTLs due to large vents required just to get it 1.9 cm long unless heavily stuffed.
Re 'big boxes'; as I suspected, once passed Vas, didn't much see the point till I used the CSA of a Vas size cube, winding up with an early W.E./RCA alignment [vent considerably bigger than driver Sd], so at around 200 L gross, doubt anyone will build it even simple as it is, but even with < 3 W it sims mids - 40 Hz 'to die for' if the room's big enough to get it well away from corners and the driver can load such a big pipe, ~3.53x Sd vent. 😉 Otherwise can be DSP'd for increased dynamic headroom.
GM
Joey,
Just like teh FHXL send me your receipt for a donation to diyAudio for a minimum $10USD.
dave
Just like teh FHXL send me your receipt for a donation to diyAudio for a minimum $10USD.
dave
Hi, thanks for plan.
I wonder how long time takes to break in A12p? To get full potential.
20h 50h or 200h?
Maybe i will try to use A12p in a OB.
But I need a big bass to join then.
I wonder how long time takes to break in A12p? To get full potential.
20h 50h or 200h?
Maybe i will try to use A12p in a OB.
But I need a big bass to join then.
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100 hrs is the factory suggestion, they do keep getting a bit better than that.
Low levels, varied material at first.
dave
Low levels, varied material at first.
dave
Do you think this Alpair 12P in FHXL is a worthy upgrade over my current Alpair MAOP 10 in FXHL? Current room size is 21 sq.m. (226 sq.ft)
Easier to drive?
Better Bass?
Better details?
Easier to drive?
Better Bass?
Better details?