That is true, but the rising response in the response from 5K till 12K is too much, and a wide notch filter can tame that a bit. I did build a ported box with this driver for a friend a few weeks ago, and the notch filter does help a lot to tame that. But don't tame it to much (i did +/-4dB off in that passband) as the rising high frequency response is a bit needed in a FR speaker. But this Fane has a too big rise in the high frequency response, and taming it is necesairy. You can do it with speaker cloth, or with a electronic notch filter like described.
My Mark Audio Alpair 10M Gen3 speakers (my main set) has also a slight rise in that section, but it's much less (half that of the Fane) and therefor perfect for the setup and don't need not notch filter at all. I've run that driver for about 4 years without crossover or other electronic correction at all (just the speaker in a ported box straight connected to my amp). Now it's a part of a WAW setup (with an Scanspeak subwoofer tuned at 25Hz and a 1st order serial crossover at 180Hz) as i'm a bass addict and the Alpair 10M gives not the big and defined bass i like... But for most it will be loud and low enough without.
My Mark Audio Alpair 10M Gen3 speakers (my main set) has also a slight rise in that section, but it's much less (half that of the Fane) and therefor perfect for the setup and don't need not notch filter at all. I've run that driver for about 4 years without crossover or other electronic correction at all (just the speaker in a ported box straight connected to my amp). Now it's a part of a WAW setup (with an Scanspeak subwoofer tuned at 25Hz and a 1st order serial crossover at 180Hz) as i'm a bass addict and the Alpair 10M gives not the big and defined bass i like... But for most it will be loud and low enough without.
Yes, that's exactly what I said. The point I was making is that you're not actually 'losing efficiency' in any practical sense, since all you're doing is attenuating unusable excess output.
Yeah, the math to calculate efficiency is based on mid-band efficiency at ~1 kHz where the pioneers measured it, so folks that spec anything higher is false advertising.
GM
GM
People pay me to do those designs for them. So i won’t post them for free for others... But the principles are public knowledge so you could do the math yourself...
Sorry for the noob question but when you're all talking about off axis are you talking about tilting 30 degrees up would or toeing in the speakers 30 degrees?
Normally referring to off the horizontal 0 axis unless stated otherwise. Tilting 30 deg up = tilting the speaker backward. Toe'd in/out referenced to 0 axis [straight ahead].
GM
GM
Im thinking to get a pair of these.. but the enclosure design is a big question. I like special enclosures and was thinking how would this work in (ML) tqwt. Qts too high for such? My goal is to get good extension down to 40Hz or so without adding any EQ.
Me to..You are not the only one.. but Ml tqwt will the enclosure be very large? Did have the opportunity to listen to any pair??
This had been linked in this thread before, user GM's 223 liter MLTL.
Need help designing "tapped spiral TL" for Fane 12-250TC - Page 2 - diyAudio
Need help designing "tapped spiral TL" for Fane 12-250TC - Page 2 - diyAudio
I also studied that, but it’s to big. Then you better port it. A sealed box of 125l against a wall gives you good response untill the low 30´s altough
Ported box seems to be out of question. As far as I know, mltqwt should work better with high qts drivers.
220 litres is not that bad actually..if it works well. Heck, I have seen huge dual tqwt's and rear loaded horns having single 6 inch driver!
Sealed indeed would be the most economical choice but its just too typical for my taste. There is no "fun factor" what so ever.. 😀
220 litres is not that bad actually..if it works well. Heck, I have seen huge dual tqwt's and rear loaded horns having single 6 inch driver!
Sealed indeed would be the most economical choice but its just too typical for my taste. There is no "fun factor" what so ever.. 😀
Fwiw, here's my tiny thread on a 130 liter ported box I made for this driver.
Fane 12-250TC vs FC152 (15-300TC)
Fane 12-250TC vs FC152 (15-300TC)
It has to be balanced sound decently so we are not looking for extreme bass. What is you experience in a sealed box of 40x40x80cm, this is lets say 125lit??
Very funny.
I was not after extreme bass, then I'd have chosen something else entirely. I had some trouble adjusting for EQ because I had less problems with rising HF response than the datasheet says, and limited opportunity for measurement and building, as this was during my short vacation in Bali. So in case you are referring to the measurements in the beginning of the thread, they where merely prelimenary results.
I had the opportunity to measure the speakers at close to 1/2pi and test the limits of what this driver can do completely by itself, in a relatively compact enclosure, so I did just that.
Look at post #15 and #16, they sounded very neutral and not bass heavy at all. I can see if I can find some videos when I get home if you have any interest of it.
Remember this is halfspace in very noisy surroundings, so in order to get any reasonable noise floor I had to run perhaps 5 sweeps at stupid loud volume to get half decent results, and just choose the ones that wheren't completely ruined by outside-of-my-control noise sources. So in-room it would be a much easier story.
I was not after extreme bass, then I'd have chosen something else entirely. I had some trouble adjusting for EQ because I had less problems with rising HF response than the datasheet says, and limited opportunity for measurement and building, as this was during my short vacation in Bali. So in case you are referring to the measurements in the beginning of the thread, they where merely prelimenary results.
I had the opportunity to measure the speakers at close to 1/2pi and test the limits of what this driver can do completely by itself, in a relatively compact enclosure, so I did just that.
Look at post #15 and #16, they sounded very neutral and not bass heavy at all. I can see if I can find some videos when I get home if you have any interest of it.
Remember this is halfspace in very noisy surroundings, so in order to get any reasonable noise floor I had to run perhaps 5 sweeps at stupid loud volume to get half decent results, and just choose the ones that wheren't completely ruined by outside-of-my-control noise sources. So in-room it would be a much easier story.
I thought 3ft3 sealed was somewhat light bass, needing a good amount of boost.
But it handled the boost.
But it handled the boost.