Latest project.
Will be fitting a Fane 12-500.
Works up to 5KHz.
Will be fitting a Fane 12-500.
Works up to 5KHz.
An externally hosted image should be here but it was not working when we last tested it.
"Works up to 5KHz" is definitely going to involve caveats. Any 12" is going to be beaming significantly up that high.
I have a Pyle tweeter box to go on top to boost the top end.
The folded horn should be good up to mids.
Datasheet says 45Hz to 4.5kHz and I bet it sux at that high frequency like most woofers do.
http://www.fane-international.com/downloads/Fane%20Sovereign%20Pro%2012500%20DS030513.pdf
I don't understand the enclosure photo in the first post, is there a diagram or something with the completed design?
http://www.fane-international.com/downloads/Fane%20Sovereign%20Pro%2012500%20DS030513.pdf
I don't understand the enclosure photo in the first post, is there a diagram or something with the completed design?
Its the 12-500LF not the 12-500.
It goes to 5KHz according to the pdf on it.
I just scribbled down a rough drawing of the half folded horn.
I got it from one on sale on ebay.
Hopefully my dimensions aren't too far wrong.
I will put up another picture when it has progressed a bit.
There are 3 panels missing from the op to fit yet.
You didn't say LF in the OP, here is that data sheet:
http://www.fane-international.com/downloads/Fane Sovereign 12500LF DS030513.pdf
The inductance they quote is 2.36 mH at 1kHz which will obviously effect the slew rate at higher voltages and frequencies. You can see in the frequency response chart that it drops off a cliff at 4KHz so the 5kHz claim is most likely a mistake, even at their +/- 6dB spec. (Manufacturers generally quote +/- 3dB for frequency response)
Most speakers have a realistic useful working range of around 2 octaves at decent power.
I am using a pair of tweeters with the box so it should sound OK.
Sorry I missed off the LF, I have so many Fane speakers lying around I have trouble remembering all the codes for them.
Sorry I missed off the LF, I have so many Fane speakers lying around I have trouble remembering all the codes for them.
In a cavity setup like that 5k is dreaming. It'll be interesting what measures look like when you're done.
I will put the sig gen on it once it is built and see how it performs.
It will only be by ear though.
I was told a similar story about my full folded horn speakers but they work very well up to mids.
I can see the sound is going to be quite complex.
The sound comes out of the back of the driver into a cavity so there will be lots of reflections from the four holes in the back of the driver and the box.
Last edited:
Painted the baffle black and temporarily bolted in speaker today.
I will remove the bolts and fit speaker clamps when they arrived.
The clamps with t-nuts and bolts will make the speaker easier to remove later.
I will remove the bolts and fit speaker clamps when they arrived.
The clamps with t-nuts and bolts will make the speaker easier to remove later.
An externally hosted image should be here but it was not working when we last tested it.
Got the side and top on now.
Add a sound deflector panel in the back.
Add a sound deflector panel in the back.
An externally hosted image should be here but it was not working when we last tested it.
Whoops, made a rookie mistake.
I wired up speaker to have positive part of waveform move speaker forwards.
As the speaker is rear facing this is the wrong way around.
Need to rewire speaker.
I wired up speaker to have positive part of waveform move speaker forwards.
As the speaker is rear facing this is the wrong way around.
Need to rewire speaker.
I suppose because there would be some directivity/gain above just mounting it on a flat baffle.... in the lower midrange. It would probably perform better in that regard if the driver was mounted magnet in instead of magnet out.
Nigel,
The cabinet you built is a straight parabolic offset mid-bass horn, it has no folds.
One could reduce the amount of folds in a folded horn, but "Half folded" is like "half pregnant", not possible 😉.
Art
You're still not going to get 5kHz out of that 12 without severe beaming & rolloff, especially so with reflective cabinet surfaces & a magnet in the way. There's nothing magical about the design which will extend & widen the driver's useable HF coverage.
This enclosure is inferior in every possible metric to a sealed box of the same size. What the hell did you see on ebay?
I hooked up a sig gen to the speaker.
It works fine up to a few hundred hertz around 400Hz.
It has a peak around 7KHz for some reason.
What is odd is it sounds ok with music.
The tops aren't too bad.
I will be using it with a dual tweeter so that should even things up a bit.
- Status
- Not open for further replies.