So, just to start out, I'm going to come out and stay that I'm not very experienced with subwoofer design, other than going off of complete designs and plans.
So, while making my last parts order from PE, I found these, saw decent enough reviews, so on a larf I grabbed a pair. I figured worse case scenario I hook them up in the garage or for my kids video game setup, but I would like to try my hand at building them into a decent design.
Titan 10" Coated Paper Cone Red Surround Woofer 4 Ohm
Would the suggested box size be a workable starting point for each speaker? Would it be a useful idea to build them into a shared box as a push-push design?
Yes, I know these are cheap, please don't comment if all you have to say are negative comments based on price/quality. I just want to build them up into something useful for LF extension and take what I can get efficiency and quality wise.
So, while making my last parts order from PE, I found these, saw decent enough reviews, so on a larf I grabbed a pair. I figured worse case scenario I hook them up in the garage or for my kids video game setup, but I would like to try my hand at building them into a decent design.
Titan 10" Coated Paper Cone Red Surround Woofer 4 Ohm
Would the suggested box size be a workable starting point for each speaker? Would it be a useful idea to build them into a shared box as a push-push design?
Yes, I know these are cheap, please don't comment if all you have to say are negative comments based on price/quality. I just want to build them up into something useful for LF extension and take what I can get efficiency and quality wise.
Unfortunately there are very few options for this one.
It's not a subwoofer, just a woofer intended for cars. The Qts is very high so its really only suitable for a sealed box, with lots of fill. I've put a quick hornresp sim for a closed box from 80L->30L. You might be able to EQ it flatter if you have existing equipment (DSP, etc). It also looks like you prefer tube amps so driving this 4ohm speaker may be a problem.
If that's unsuitable you could always sell them.
It's not a subwoofer, just a woofer intended for cars. The Qts is very high so its really only suitable for a sealed box, with lots of fill. I've put a quick hornresp sim for a closed box from 80L->30L. You might be able to EQ it flatter if you have existing equipment (DSP, etc). It also looks like you prefer tube amps so driving this 4ohm speaker may be a problem.
If that's unsuitable you could always sell them.
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Two to four per side on a baffle ought to do it. Maybe make it fancy with opposing woofers in slot OB?
That is a very high qts for fs 37hz, designed for IB?
That is a very high qts for fs 37hz, designed for IB?
That doesn't look too bad, and could work with a bit of EQ. Might even do ok as-is. I'm assuming the flatter line is the 80L enclosure?
If I wanted to do push-push with them in a common box, would I double the size, or stick to the same dimensions?
I don't have DSP capabilities, but I'm strongly considering getting a miniDSP rig together at some point. I'm an analog guy primarily, mainly because I don't have more than a couple crappy laptops as far as computers, and lack the time as well as space to set up more. Then you get into DACs, etc. Quite the rabbit hole for those of us that DIY everything that we can 🙂
And 4 ohms isn't necessarily a problem, as I can build up something that will work for that easily, I just don't have anything that is currently set up for it. I've got piles and piles of LM3886 and LM4780, might be time to dust them off and build a big pair of parallel/bridge chipamps.
Cheap enough that a line array for LF sounds like an absurd but fun idea 😉
Hmmmm. With what, a 24" round baffle perhaps?
Not round.
Rectangular.
U-frame or similar.
The longer the way from the front side of the speaker to the back side the lower the low freq cut off.
Linkwitz Transform Subwoofer Equaliser for LF equalization (although it gets tricky with not exceeding Xmax, as DonVK's post shows very clearly, and the vagaries of one's listening space)
Dipole Woofer Woofer
and
DIY-dipole-1
are good reads.
Dipole Woofer Woofer
and
DIY-dipole-1
are good reads.
Still have excursion problem with isobaric, though I use it a lot for near field setups and like what I get out of it.
Hah!
That was fun Bjorno.
If you get materials for free/scavenged, it would be nice to see how cheap one can make a 267 liter complete sub. 20$ in drivers + shipping.
That was fun Bjorno.
If you get materials for free/scavenged, it would be nice to see how cheap one can make a 267 liter complete sub. 20$ in drivers + shipping.
It was interesting and I was impressed that @bjorno got a TH to work with this driver. However at 267L its about the size of a car and a 4.5m path is a lot of folds. 🙂
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Wow, thank you. Of these three, what makes more sense? I'm having a hard time looking at things practically as I'm not terribly familiar with hornresp... Is this with both driver mounted next to eachother, or a single?
267L 😱
Neat. Time to build it as a platform to set under my couch!
Could go for a quarter 4'x8' sheet of ply per top/bottom (24x48") folding baffles as necessary internally, fire the drivers from either end, and set it as a coffee table, or an ottoman 😎
Unless you're firing it from a basement/crawlspace, I think you're going to find bjorn's suggestion a bit difficult to package. 🙂
The drivers in this case aren't worth the investment in lumber! Stick with simple simple designs as you don't have the driver for loaded alignments (267 l) nor the output/low distortion to justify spending a tom of time on a box
The drivers in this case aren't worth the investment in lumber! Stick with simple simple designs as you don't have the driver for loaded alignments (267 l) nor the output/low distortion to justify spending a tom of time on a box
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