It's just amazing how fast you come up with those sims, dont do to much work on my account, i almost feel ashamed for posting those now 😱 Those W4-1052SDF drivers do look very nice in the sim, tried them out by any chance?
Only looks and durability then, well i still do have 22 foamboards left and it would be a shame not to use them..
Or maybe the Tang Band W4-1879??
Not cheap ($129 each... 🙁) with neodymium magnet, bamboo fiber cone, but specs look pretty good for going low:
FS: 55Hz
QTS: 0.43
Xmax: 5mm
SPL: 87db
Not cheap ($129 each... 🙁) with neodymium magnet, bamboo fiber cone, but specs look pretty good for going low:
FS: 55Hz
QTS: 0.43
Xmax: 5mm
SPL: 87db
It's fast because the model is built and I have a database of 100+ drivers on hand that I have created over time. So no problem to help. I have not tried the W4-1052SDF but I know Prezden has tried the W3-1320SIF and he really likes the sound of it. This one is similar but has poly cone and higher Qts which will give a slightly better bass extension. If you want a sure thing, you can't go wrong with the 1320SIF Bamboo paper cone. No need for fancy drivers with Nd magnets - which will tend to have a more powerful motor with lower Qts and not as deep bass extension for the same fs.
I agree with Cal that wood channels will not sound better - the foam may actually have beneficial acoustic damping effects.
Here is the W4-1879 in a 27.55 in x 5 in deep Cornu - very similar to the lower priced W4-1052SDF, but less bass extension.
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Well the driver hunt it still on then. Noticed the W4-1052 is a 4ohm driver, my amp is a 6/8ohm one so i'd rather just stick to 8 ohm drivers. Think the W4-1320Sif will be better then the W3? It has a 0.36Qts.
My mistake I meant Prezden tried the W4-1320sif bamboo. I would go with that driver, as Prrzden said, it is perhaps the best sounding speaker he has heard and he has built 4 Cornu's.
Well i was hoping to try something new, how about this 4.5 inch one:
REVC 7.2 Ohm
Fo 65.40 Hz
Sd 5.02 K mm/2
Vas 5.17 Ltrs
Cms 1.44 uM/N
Mmd 3.90 g
Mms 4.10 g
BL 4.20 T*M
Qms 2.66
Qes 0.69
Qts 0.55
Levc 32.44 uH
No 0.20%
Spl 85.4 dB
Pwr 20w Nom.
X max 4.3-mm 1 way
Coil Dia 20-mm
on the other hand if the ff125wk or the w4-1320 are simply the best there are for the 70/80 cm cornu i might as well pick one of those..
Fo 65.40 Hz
Sd 5.02 K mm/2
Vas 5.17 Ltrs
Cms 1.44 uM/N
Mmd 3.90 g
Mms 4.10 g
BL 4.20 T*M
Qms 2.66
Qes 0.69
Qts 0.55
Levc 32.44 uH
No 0.20%
Spl 85.4 dB
Pwr 20w Nom.
X max 4.3-mm 1 way
Coil Dia 20-mm
on the other hand if the ff125wk or the w4-1320 are simply the best there are for the 70/80 cm cornu i might as well pick one of those..
I've seen some earlier posts talking about the MA chr 70 but no-one tried them? dont suppose you did a sim? 😀 Any other intresting drivers that passed the review but didnt get tested?
I think someone has built it with chr70 but I can't remember who. I have run sims and it looks very good if I recall, similar to W4-1320. I will see if I can find it.
Cornu with W4-1320SIF
Here is the sim for the W4-1320SIF. Speaker is mounted on wall at 48 in above floor (centerline of driver). 27.55 in x 5.0 in deep.
SPL vs Freq.
Impedance
Cone Excursion
Looks like it should work well.
good luck building it!
X
Here is the sim for the W4-1320SIF. Speaker is mounted on wall at 48 in above floor (centerline of driver). 27.55 in x 5.0 in deep.
SPL vs Freq.
Impedance
Cone Excursion
Looks like it should work well.
good luck building it!
X
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My vote is for the W4-1320sif as it has a more efficient high freq which will be needed to balance the bass amplification the horns provide. Although a simple 4 sided foam core front horn/waveguide that goes from 4x4 in to 10x10 in over 4 in depth will give you about 10 dB gain on the HF to balance. It looks funny though. 🙂
I noticed, but the chr70 will cost me about $48 per driver while the tangband will cost $68 Not that i really mind, but the cheap foamcore drivers aren't that cheap anymore then 🙂 I' ve seen the horns on the original cornus, anyone make one out of foam yet?
You don't need an expensive driver to get a real kick out of these cabinets. That's one of the advantages I think. They make a mediocre driver sound that much better.