Fostex FE206NV project is finished.
Some ML-TL derived from a Martin King project for Lowther that with some modifications fit into the TS parameters of the Fostex, these being very similar to those of the Lowther Dx2.
http://www.quarter-wave.com/Project04/Project04.html
To equalize this extended range I decided on two notch filters centered at 2.6k and 9k and a step speaker that starts at 150 hrz.
It has a rise of about 5 dB above 10k, very suitable for those of us who have lost sensitivity in those highs.
The impedance was very friendly for the tube amplifier with which this system will be used.
Note: Hornresp was used for the design and simulation of the box. Jeff Bagby's spreadsheet and XSim were used to design and simulate the filters. For response measurements the REW and for impedance the LIMP. All software free to use. It was measured with a Dayton IMM6 calibrated microphone.
Sorry for my english
Some ML-TL derived from a Martin King project for Lowther that with some modifications fit into the TS parameters of the Fostex, these being very similar to those of the Lowther Dx2.
http://www.quarter-wave.com/Project04/Project04.html
To equalize this extended range I decided on two notch filters centered at 2.6k and 9k and a step speaker that starts at 150 hrz.
It has a rise of about 5 dB above 10k, very suitable for those of us who have lost sensitivity in those highs.
The impedance was very friendly for the tube amplifier with which this system will be used.
Note: Hornresp was used for the design and simulation of the box. Jeff Bagby's spreadsheet and XSim were used to design and simulate the filters. For response measurements the REW and for impedance the LIMP. All software free to use. It was measured with a Dayton IMM6 calibrated microphone.
Sorry for my english
Attachments
Beautiful work.
My 15ohm PM6A double-notch 2.5/8.7khz done-by-ear/math-in-head:
https://www.diyaudio.com/community/...ile-city-of-22m-laid-flat.393338/post-7266571
My 15ohm PM6A double-notch 2.5/8.7khz done-by-ear/math-in-head:
https://www.diyaudio.com/community/...ile-city-of-22m-laid-flat.393338/post-7266571
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Nice work,
I also have 2 FE206NV2 sitting in their boxes and would like to build some good enclosure for them - preferably double front loaded horn like Sachiko or Kirishima.
I wonder if somebody will re-make Sachiko / Kirishima drawings for newer Fostex FE206NV2 line - these cabinets were not updated for a very long time and eN drivers are anyway obsolete by now?
I also have 2 FE206NV2 sitting in their boxes and would like to build some good enclosure for them - preferably double front loaded horn like Sachiko or Kirishima.
I wonder if somebody will re-make Sachiko / Kirishima drawings for newer Fostex FE206NV2 line - these cabinets were not updated for a very long time and eN drivers are anyway obsolete by now?
Attachments
@Ramey
Nice work! I’m interested in building Martin’s ML TL as well since I recently picked up a pair of DX4 drivers for a steal.
They needed some work, but I think I have them sorted now well enough to try them out.
It’s good to know that Martin’s design is adaptable to Fostex drivers. I have a pair of the NV that came in some Kirishima horns I scored in the past couple years.
I decided to try modifying my older 206e drivers and I’m loving them in those cabinets. So much so that I’ve put off trying some used 206esr and 208ez I hoarded after I got the cabinets.
@tubemax
I would reach out to Dave at Planet 10 or scottmoose on hear. There might already be an adaptation of the Sachiko/Kirishima design…or perhaps the NV2 isn’t different enough to warrant changes and it could be used in one if the existing cabinets. Either way, they’re the guys to talk to.
Nice work! I’m interested in building Martin’s ML TL as well since I recently picked up a pair of DX4 drivers for a steal.
They needed some work, but I think I have them sorted now well enough to try them out.
It’s good to know that Martin’s design is adaptable to Fostex drivers. I have a pair of the NV that came in some Kirishima horns I scored in the past couple years.
@tubemax
I would reach out to Dave at Planet 10 or scottmoose on hear. There might already be an adaptation of the Sachiko/Kirishima design…or perhaps the NV2 isn’t different enough to warrant changes and it could be used in one if the existing cabinets. Either way, they’re the guys to talk to.
@chromenuts
Thank you for advice, I will post a question to both of them... nice looking monsters! This is what I would like to build for NV drivers one day...
Thank you for advice, I will post a question to both of them... nice looking monsters! This is what I would like to build for NV drivers one day...
The NV could use phase plugs (like Chrome’s.
It likely benefirs from the other standard Fostex FE mod tricks.
dave
It likely benefirs from the other standard Fostex FE mod tricks.
dave
Hi Dave,
I would like to ask you and also scottmoose, if there is a newer version of Sachiko or Kirishima horns for Fostex FE206 NV/NV2 range, I don't mind paying for a planset?
I would like to ask you and also scottmoose, if there is a newer version of Sachiko or Kirishima horns for Fostex FE206 NV/NV2 range, I don't mind paying for a planset?