Hi guys, thought I would share my project for camping this summer. It was a really straight forward easy build. Which gives excellent sound and good bass to about 70-80hz - tuneable as it is a sealed design with the tone controls or eq on your source device.
I simply put a 12" fane 12-250tc full range driver into a 25 litre sealed box with a 12v lithium motorbike battery and a 12v lepei t-amp. I wired speaker posts to the battery with a switch so I can charge it with an external charger, and made a stereo to mono cable with some resistors to give good stereo summing.
Anyway with the high sensitivity of the fane driver and the tone controls you can get hours of loud high quality sound from a single charge.
Photos speak louder than words anyway:
I simply put a 12" fane 12-250tc full range driver into a 25 litre sealed box with a 12v lithium motorbike battery and a 12v lepei t-amp. I wired speaker posts to the battery with a switch so I can charge it with an external charger, and made a stereo to mono cable with some resistors to give good stereo summing.
Anyway with the high sensitivity of the fane driver and the tone controls you can get hours of loud high quality sound from a single charge.
Photos speak louder than words anyway:
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Hi, yep, I am shocked by how good the 250tc is! It is best with a little eq, but it sounds fantastic!
Freddi - yep I am only using one channel of the little amp, I built a cable using a stereo 3.5mm jack which terminates in a single rca plug. You can buy adaptors but they don't have any resistors and can damage the stereo source device. I followed the recommended schematic attached.
Freddi - yep I am only using one channel of the little amp, I built a cable using a stereo 3.5mm jack which terminates in a single rca plug. You can buy adaptors but they don't have any resistors and can damage the stereo source device. I followed the recommended schematic attached.
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Lol! My wife said the same... But there is a volume control and of course if you are using a fraction of a watt, a single charge will last a long time....
Yep, and if you stuff it with rockwall you'll get another 20% ish volume. Perfect for sealed alignment for a boom box! F3 around 70hz.
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Oh I know it will have a high QTC - but actually given it will be mainly used outside, I have found the higher F3 of 70 is a good thing to limit excursion, and the slight bass 'hump' due to the high QTC is no bad thing - doing low bass outside requires serious equipment! Anyway - it does require some EQ - I find a slight boost of bass and a slight turn down of treble and it is a delight!
If I were using it inside - I would have a very different enclosure. I am just so impressed that this large 12" driver can reach up so high and sound so good.
hey Norman re: notch filter - if I can find a direct radiator baffle to mount that Fane. It sounded very good (although no low bass) in a Karlson 12 with the slit vents damped with a layer of bonded Dacron. About 3 layers back in my junk is an EV Aristocrat. Do you think ~0.3mH would be a good starting figure?
http://i.imgur.com/87jTAYp.jpg
http://i.imgur.com/87jTAYp.jpg
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