I mean, we can access A10.3 which is not the Sibelus driver.
Mods to the A10.3do not affect the bass alignment.
dave
No. When i need a quarterwave design i ask Scott. @Scottmoose.
Given the access to stuff that hasn’t been published i would fold an A10.3 Festival into a rectangular box.
dave
Just a box with slotted port and some inner panels. Nothing is accurate but give you a good beginning.
your sibelius is average this no ? https://sites.google.com/view/low-e...y-tqwtml-voigt-pipe-with-damp-duct?authuser=0
your sims is better?
your sims is better?
Hello Cindra,
Yes it is not a simple TQWT it is a mass loaded TQWT (Voigt Pipe) and it may work a bit finer! Our dear "nandappe" stated:
"By making the opening of the enclosure duct-shaped, the frequency range below 300Hz can become flatter or the lower limit can be extended. Please give it a try once".
For a better understanding:
Regards to Zagreb
Stefan
Here the simulation with the 10.2 in same BR cabinet.
Red 10.2 / green 10.3.
Simulations looks very nice.
Attachments
Note that given the aspect ratio of the (so-called) BR box Hondasi posted will make it an ML-TL and WinISD can’t handle that.
dave
dave
Not even same line od MA drivers...no one will ever make Sibelius at home so best try to make something that will look alike with Alpair 10.3. Dimensions of Sibelius are known, so sims with stock driver than playing a bit with numbers to get something optimal if needed
My two cents based on the comments in this thread as I understand 'em:
The Pearl and the 10.3M drivers are different and insofar as they differ any resultant loudspeaker systems will be different.
Reverse engineering the Pearl based on outward appearance, materiality and general design concept assumptions might be productive (while admitting to not actually having the particular Pearl drivers) but...
We have several worked out designs for the 10.3M driver by really brilliant fellows that we can build and have confidence in their performance: The Pensils (that relatively closely resemble the Pearl); the FHXL which might be an arguably better loudspeaker; and versions of the mass loaded Voigt pipe that is the basis for the Pearl (Festival or folded Festival).
There is a consensus that standard construction techniques with baltic birch would work better and be more straightforward to accomplish than variations on the thick solid oak cabinet. Technically, the internal dimensions are the important thing, not the enclosure materials.
In any event, the 10.3M should be EnaBl-treated or benefit form Dave's "simple tweak" or a notch filter.
I will probably Enabl my newly-acquired 10.3Ms and build either a Pensil or FHXL and try to be happy (and not cast envious eyes at expensive Finnish jewelry).
There is also Nandappe TQWT or DDVP for Alpair 10.3.
I know that FHXL take some floor space, but I would not change mine just because of that, and as peace of furniture FH are really unique.
I know that FHXL take some floor space, but I would not change mine just because of that, and as peace of furniture FH are really unique.
Nope, I dont need that. Made FHXL with Sota11R and Alpair 11ms and FHmk3 with Pluvia 7HD, didnt need notch on either....but Im switching amps and speaker cables from time to time and difference is quite big