Dave, I see you have flush mounted the driver. Do you find that flushing mounting helps the high end?
This page http://zaphaudio.com/mtg-surface.html has had me wondering about flush mounting full range drivers for quite some time.
This page http://zaphaudio.com/mtg-surface.html has had me wondering about flush mounting full range drivers for quite some time.
Re: The latest of the Fonken Family
They turned out quite nice Dave, how do they compare to the standard Fonkens?
Jeff
planet10 said:
They turned out quite nice Dave, how do they compare to the standard Fonkens?
Jeff
gmilitano said:
It is part of our assualt on getting the last little bit out of the speaker. With the program in the CNC machine, we just do it by default now,
dave
Re: Re: The latest of the Fonken Family
No direct comparison yet... Chris took a pair of fresh drivers for the ribbon mahogany Fonkens so that we can compare.
I expect a standard set to have an edge, but there are some (theoretical) advantages to the GR box (lower BS frequency for one, more bass maybe (but not necessarily better)).
dave
vinylkid58 said:
No direct comparison yet... Chris took a pair of fresh drivers for the ribbon mahogany Fonkens so that we can compare.
I expect a standard set to have an edge, but there are some (theoretical) advantages to the GR box (lower BS frequency for one, more bass maybe (but not necessarily better)).
dave
(Chris mailed me some pics)
Part of the rationale for the existance of the GR Fonken is that it is part of a family of "Flat-Face" Fonkens. A series of boxes that use the same tuning as the Fonken in different aspects (13 litres tuned to 50-something with a high aspect ratio port).
Here is the freshly finished Mark II floorstander. Everything below the port on the back is meant to be sand-filled for stability. The Mark 1 doesn't have this, so is even skinnier,
dave
Part of the rationale for the existance of the GR Fonken is that it is part of a family of "Flat-Face" Fonkens. A series of boxes that use the same tuning as the Fonken in different aspects (13 litres tuned to 50-something with a high aspect ratio port).
Here is the freshly finished Mark II floorstander. Everything below the port on the back is meant to be sand-filled for stability. The Mark 1 doesn't have this, so is even skinnier,
dave
Attachments
planet10 said:
I like the Mileva shape as well, although my wife doesn't. 🙁
The Mark II floorstanders are finished beautifully, that veneer is really quite lovely. I've given up on the idea of putting veneer on mine, now that the weather is warming up, I think a few coats of spar varnish and some wax will be it for them.
Jeff
vinylkid58 said:
If you like, I can get that done for you wholesale
(well, maybe a case of cool pops)32 sq ft of QC mahogany veneer goes a long way on this size a box
chrisb said:
If you like, I can get that done for you wholesale
32 sq ft of QC mahogany veneer goes a long way on this size a box
Thanks for that very generous offer Chris, I may be asking you for help when I decide what my next project is going to be.
I was thinking of a Super Abby clone with a bit more Vb, or a FF165k Mileva with a Fostex supertweet on top.
Unfortunately, I've got a bunch of domestic projects that have priority over any hifi related ones.
Jeff
FE168-E sigma project
hi to all,
i'm starting a project based on the foxtex fe168-e sigma drivers, here some pictures of this project: http://scalblog.blogspot.com/
And somes pictures attached:
hi to all,
i'm starting a project based on the foxtex fe168-e sigma drivers, here some pictures of this project: http://scalblog.blogspot.com/
And somes pictures attached:
Attachments
Update
Updated the blog yesterday, starting to be exiting 😉
http://scalblog.blogspot.com/
(sorry all coments are in french)
Geek said:
Updated the blog yesterday, starting to be exiting 😉
http://scalblog.blogspot.com/
(sorry all coments are in french)
First order, ~.12mH coil in parallel with tweeter for 11k ish, 22 ohm resistor pad also in parallel.
Woofer currently has 15ohms-10uF in parallel with it.
Both these values to be trimmed.
Woofer currently has 15ohms-10uF in parallel with it.
Both these values to be trimmed.
What does the R in the woofer circuit do?
I am considering something quite similar for 207 + FT17 -- i was thinking of an extra series cap on the tweeter.
dave
I am considering something quite similar for 207 + FT17 -- i was thinking of an extra series cap on the tweeter.
dave
Its a shot at baffle step compensation, the woofer is being run pretty much full range. A straight cap in parallel gives the normal 6dB/oct roll off. All this assumes current source amplifier. Normally tweeters are crossed to with cap, doesnt work out same here. All XO components go in parallel with current source amp.