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#331 Re: Fane 12-250TC Retro Speaker.
Posted: Sun Nov 13, 2022 10:42 am
by Fozzibaermopped
I have tried to simulate the Fane with a simulation programme (closed cabinet). The results are not so good (my skills are very limited). But I could see that increasing the volume above 80 litres does not bring much improvement for more deep frequencies. Therefore, I will also build the enclosure in the 80 litre range.
However, I would like to equip the bottom with an exchangeable plate. This way I can do different experiments (closed, ventilated or bass-reflex).
I have read in the last reports that you have exchanged the feet for others. What was the reason? Did the longer feet have a negative influence on the sound? What is the length of the new feet?
#332 Re: Fane 12-250TC Retro Speaker.
Posted: Sun Nov 13, 2022 10:43 am
by Cressy Snr
I was just experimenting with different feet. The original feet ended up back on.
Yes, 80 litres was the best compromise I found. In terms of bass, as you will be aware, deep bass, reasonable box size and high efficiency do not go together. If you want ultra-deep frequencies then an active sub will be needed.
#333 Re: Fane 12-250TC Retro Speaker.
Posted: Sun Nov 13, 2022 11:33 am
by chris661
It's also worth noting that the typical UK house has brick walls, which means we can get quite a lot of room gain.
My current speakers, for example, are -3dB at 50Hz according to the simulations. In practice, my (very helpful) room results in a response that gets to +15dB (over nominal level) at 40Hz. The measured -3dB point at the listening position is just below 10Hz.
It's entirely possible that the Fanes were enjoying similar benefits in terms of LF boost, but it'd need a measurement mic to check.
Chris
#334 Re: Fane 12-250TC Retro Speaker.
Posted: Wed Nov 16, 2022 7:38 pm
by Fozzibaermopped
I will add another 10 litres on top. So the enclosure will have 90 litres. So I have the possibility to reduce the enclosure volume by inserting polystyrene cubes if necessary.
And the speaker gets a little higher.
I will revise the drawing accordingly. When it is finished, I will show it to you. Wood has already been ordered.
It will be my winter project.
#335 Re: Fane 12-250TC Retro Speaker.
Posted: Sat Dec 03, 2022 2:48 pm
by Fozzibaermopped
I would like to report further. Here you can see my first design for the 90L enclosure:
The openings for ventilation in the floor remain closed for the time being. I want to hear the speakers closed first.
The first load of wood has already arrived:
I start with the partition wall inside:
Shit... The circle cutter is blunt:
The wood burns during sawing:
Sharpened the circle cutter for an hour with the diamond file. Now it cuts well again and produces a lot of Biscuits:
I'm done for the day:
I'll keep you updated.
#336 Re: Fane 12-250TC Retro Speaker.
Posted: Sat Dec 03, 2022 5:49 pm
by IslandPink
Good effort. I've been there a number of times where I had the time and focus to get things done, then the tools failed me.
#337 Re: Fane 12-250TC Retro Speaker.
Posted: Sun Dec 04, 2022 10:55 am
by Ray P
Fozzibaermopped wrote: ↑Sat Dec 03, 2022 2:48 pm
I would like to report further.
Good work.
#338 Re: Fane 12-250TC Retro Speaker.
Posted: Wed Feb 08, 2023 7:36 am
by Fozzibaermopped
Things are moving forward. A lot of work, little free time. Therefore only slowly.
The enclosures are glued together:
Unfortunately, the supplier of the boards did not work cleanly. The side parts are 1mm too short:
But I will compensate for that later with the router.
Then the cut-outs for the full range drivers:
Soon it will continue.
#339 Re: Fane 12-250TC Retro Speaker.
Posted: Wed Feb 08, 2023 8:04 am
by Cressy Snr
Great work!
#340 Re: Fane 12-250TC Retro Speaker.
Posted: Sat Feb 18, 2023 1:33 pm
by Fozzibaermopped
With the current prices for wood, it is really hard to get material at reasonable prices. That's why I made the mouldings for the corners myself.
I installed the router in the work table and clamped on guides made from wood scraps:
Then carefully push the rectangular strips through:
#341 Re: Fane 12-250TC Retro Speaker.
Posted: Fri Mar 03, 2023 7:31 pm
by Fozzibaermopped
And it goes on...
The strips were glued:
This is what the enclosures with the corners look like:
The edges will be rounded off later...
#342 Re: Fane 12-250TC Retro Speaker.
Posted: Fri Mar 03, 2023 7:45 pm
by Fozzibaermopped
#343 Re: Fane 12-250TC Retro Speaker.
Posted: Fri Mar 03, 2023 8:04 pm
by Fozzibaermopped
#344 Re: Fane 12-250TC Retro Speaker.
Posted: Fri Mar 03, 2023 10:18 pm
by IslandPink
The pictures are very educational !
#345 Re: Fane 12-250TC Retro Speaker.
Posted: Sat Mar 04, 2023 8:31 am
by vinylspinner
Nice work, those little Makita palm routers are brilliant, very versatile and every workshop should have one.