#1 Interest Check - Custom Fane 15" Full-Range
Posted: Fri Sep 07, 2018 1:03 pm
Hi all,
I'm running an interest check first of all.
The Fane 15" full-range driver looks pretty good in a lot of ways, but the T/S parameters make it difficult to work with unless you're willing to put up with a very large cabinet - Qts = 0.7 and Vas is 203L.
I'm thinking of organising a group buy for some upgraded units, and wanted to check interest levels.
I can see a few options here:
A - Same moving parts, just add more magnet
B - More magnet, cast aluminium frame
C - More magnet, cast frame, bigger voice coil aiming for more cone excursion and power handling.
D - Don't bother, the original is fine
I'm not looking for solid commitment or money at this point, but a rough idea of how many you might want to order would be good.
The T/S parameters I'm aiming for are simply to increase BL and drop Qes. That'd mean they'll be much happier in smaller cabinets, and also gain some efficiency.
Here's a quick sim of what we get if we go from the current BL=10.9 to BL=18.9:
This is in a 35L cabinet tuned to 73Hz. I know which I'd prefer.
With the increased BL, you could also go for a larger cabinet in the 100L range, which would give a response that slopes down towards the bass (probably matching room gain curves quite well) with LF extension into the 30Hz range before it rolls off.
So, I can see the improved version being useful for a few different markets:
- High-efficiency home HiFi - add a small valve amp and you're done.
- Professional Audio - stage monitors, main PA, etc.
- High-power home theatre surrounds.
A quick summary of the upgraded product:
- 15" Full-range unit
- Powerful motor means it'll be happy in compact enclosures
- Exceptionally high efficiency - 102dB @ 2.83v in 2pi.
- No need for a crossover
- Possible option for cast aluminium basket
- Uses existing recone materials
- Possible to get very deep bass, but larger enclosures would be needed.
I think that's everything. I've (hopefully) set up a poll so you can tell me what you think of all this.
Cheers all,
Chris
I'm running an interest check first of all.
The Fane 15" full-range driver looks pretty good in a lot of ways, but the T/S parameters make it difficult to work with unless you're willing to put up with a very large cabinet - Qts = 0.7 and Vas is 203L.
I'm thinking of organising a group buy for some upgraded units, and wanted to check interest levels.
I can see a few options here:
A - Same moving parts, just add more magnet
B - More magnet, cast aluminium frame
C - More magnet, cast frame, bigger voice coil aiming for more cone excursion and power handling.
D - Don't bother, the original is fine
I'm not looking for solid commitment or money at this point, but a rough idea of how many you might want to order would be good.
The T/S parameters I'm aiming for are simply to increase BL and drop Qes. That'd mean they'll be much happier in smaller cabinets, and also gain some efficiency.
Here's a quick sim of what we get if we go from the current BL=10.9 to BL=18.9:
This is in a 35L cabinet tuned to 73Hz. I know which I'd prefer.
With the increased BL, you could also go for a larger cabinet in the 100L range, which would give a response that slopes down towards the bass (probably matching room gain curves quite well) with LF extension into the 30Hz range before it rolls off.
So, I can see the improved version being useful for a few different markets:
- High-efficiency home HiFi - add a small valve amp and you're done.
- Professional Audio - stage monitors, main PA, etc.
- High-power home theatre surrounds.
A quick summary of the upgraded product:
- 15" Full-range unit
- Powerful motor means it'll be happy in compact enclosures
- Exceptionally high efficiency - 102dB @ 2.83v in 2pi.
- No need for a crossover
- Possible option for cast aluminium basket
- Uses existing recone materials
- Possible to get very deep bass, but larger enclosures would be needed.
I think that's everything. I've (hopefully) set up a poll so you can tell me what you think of all this.
Cheers all,
Chris