An externally hosted image should be here but it was not working when we last tested it.
My El Cheapo OB
2.5" sica distorted like hell under 1k dipole corrected
putting it to 15mm deep baffle it gives +3db to all area 900-3k
2.5" had to delete dust cap, but 6.5" went worse after delete
80db is too much for this speaker
Sounds better than common "boxmufflers"
putting it to 15mm deep baffle it gives +3db to all area 900-3k
2.5" had to delete dust cap, but 6.5" went worse after delete
80db is too much for this speaker
Sounds better than common "boxmufflers"
For anyone who is on the fence about building the Manzanita or Ultra, Parts Express has the Tymphany mid/tweeter on sale for $10.50 right now.
With the Tympany driver on sale I'm toying with upgrading the 1st gen Manzanita's (that have the dome tweeter) to the new build.
Can I use the old 12 mH woofer inductor in series with an 8 mH inductor rather than buying a new, big 20 mH inductor? It's obvious they couldn't be anywhere near each other but using the old inductor would both save money and prevent another old part from being thrown in the parts bin.
Can I use the old 12 mH woofer inductor in series with an 8 mH inductor rather than buying a new, big 20 mH inductor? It's obvious they couldn't be anywhere near each other but using the old inductor would both save money and prevent another old part from being thrown in the parts bin.
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You guys should try upgrading the TC9FD to the $22 TG9FD10-8 (Fiberglass). It has a wonderful smooth as glass sound and for the most part - a drop in replacement for the paper cone TC9. It is a superb sounding driver almost on par with $100 SS 10F/8424.
Oh, well. Now you tell me after I just ordered a pair of new TC9FD. 😛
Actually, not sure the TG9FD would work for me. Power handling is very low and impedance is 4 ohm.
For my Troglodyte version of the Manzanita, I'm looking at going to a 4" Faital Pro driver. Need more umph. Might work well with the double 15" version, too. John? What do you think?
Actually, not sure the TG9FD would work for me. Power handling is very low and impedance is 4 ohm.
For my Troglodyte version of the Manzanita, I'm looking at going to a 4" Faital Pro driver. Need more umph. Might work well with the double 15" version, too. John? What do you think?
Maybe it would be a little outside this thread (but just a tiny bit) but it would be interesting to find a similar tweet that is more efficient to go with doubled up existing woofer...well, I guess crossover would also be needed....I am awfully greedy but it would be sweet! Efficiency in 90+ dB range. I will shut up now.
Russellc
Russellc
I don't think it's too much outside the topic. John Busch and I have discussed this a lot over the phone.
FOr sure the little Vifa can not keep up with the double GRS 15" woofer version. I would not even keep up with a double Peerless version. That's why I've been looking at the Faital Pro 4FE32. No more power handling than the Vifa, but it's 6-7dB more efficient, which counts for a lot! It might be able to keep up with a double woofer version. Just don't know how it sounds at the top end.
The plots are here - Vifa on the left, Faital on the right.
FOr sure the little Vifa can not keep up with the double GRS 15" woofer version. I would not even keep up with a double Peerless version. That's why I've been looking at the Faital Pro 4FE32. No more power handling than the Vifa, but it's 6-7dB more efficient, which counts for a lot! It might be able to keep up with a double woofer version. Just don't know how it sounds at the top end.
The plots are here - Vifa on the left, Faital on the right.
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6 to 7 dB would about right for the efficiency increase of the double woofers, unfortunately I know nothing of crossover design. I will build Ultras and wait for developments. Thanks to you and John on the work you have done here already, and the Caveman thread!
Russellc
Russellc
According to one reviewer on Parts Express, the 8Ω version sounds smoother in the top end than the 4Ω version, which makes me wonder about the 16Ω version.