Hello all,
I currently have a set of speaker towers i built off a design I found online. After seeing some of the posts here about it, it's not a well favored design. But frankly I enjoy it. I've had these towers built for awhile now, and at this point I've had the itch to mess with them again. They are currently an MTMW design and I wondered how much would need to change in the crossover to make it a MTMWW design?
I currently have a set of speaker towers i built off a design I found online. After seeing some of the posts here about it, it's not a well favored design. But frankly I enjoy it. I've had these towers built for awhile now, and at this point I've had the itch to mess with them again. They are currently an MTMW design and I wondered how much would need to change in the crossover to make it a MTMWW design?
Some thoughts...this one came later but goes first: another woofer would need more volume, right?
Okay...the first one is: as long as the impedance is the same, there shouldn't be any remarkable changes, but then it follows that the coherent waves would produce ( ideally) + 6dB, so the sound balance would be a little bass overwelmed, but that might be the objective...!
( at this point I would say that less is more, so a WMT instead of MTMWW! )
Okay...the first one is: as long as the impedance is the same, there shouldn't be any remarkable changes, but then it follows that the coherent waves would produce ( ideally) + 6dB, so the sound balance would be a little bass overwelmed, but that might be the objective...!
( at this point I would say that less is more, so a WMT instead of MTMWW! )
So I modeled the woofers in the same enclosure and they actually seem to perform better with 2 sharing than just one. The original enclosure was a lot bigger than it should have been, so volume shouldn't be an issue. Currently the W is an 8 ohms if I added another 8ohm driver that would change the impedance to either 4ohms or 16ohms depending on wiring configuration right?
I suspect the enclosure is tall & slim, so a bigger woofer is not in catalogue. The impedance of the woofer or 2 woofers is 'synergetic' ( ha ha) to the output of the amp, i.e. it (they) will draw more power and move in accordance to it ( if Z=4 Ω instead of 8Ω )
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You are correct on the enclosure. So it sounds like I won't need to make any changes to the crossover by adding a woofers? The lower ohm rating and power requirements are not an issue. They are driven by a dedicated crown amp. I didn't know if wiring in a 2nd woofer would change the crossover point or if I needed different capacitors due to a lower impedence.
It depends on how you want to use them, but first consider the fundamental issue. If you can increase your MTM section by 6dB then you can use the 6dB from the extra woofer. If your mids are reduced by resistors you could make up sensitivity there.
There is another way. If your mids are in series then you could put them in parallel, then put your woofers in parallel.. however if your mids are already in parallel then you might put your woofers in series.
There is another way. If your mids are in series then you could put them in parallel, then put your woofers in parallel.. however if your mids are already in parallel then you might put your woofers in series.
So the mids have around 4dB to spare, which could be tweaked up if needed.. but the tweeters are the limitation.
Would you be happy with series woofer connection?
Would you be happy with series woofer connection?
Yes. The thing with parallel connection is the increase in sensitivity. What will you do with it?
While you're answering that question, consider whether you'll run both together or cut one at a different frequency. It might not matter so much with this low cross.
Are you trying to get something out of the other woofer or do you just want it?
While you're answering that question, consider whether you'll run both together or cut one at a different frequency. It might not matter so much with this low cross.
Are you trying to get something out of the other woofer or do you just want it?
I don't see an increase in sensitivity as a bad thing, less power is require to make the lower range a bit louder. Part of the driver addition is just because I want it, but then the other part is the enclosure is almost 2 times the volume of what 1 driver needs at the moment. When I modeled it in the enclosure I got a better response mechanically from 2 drivers in the same enclosure, specifically the xmax of the driver fell back within its specified limits at any given wattage whereas with 1 driver, I would go passed xmax if I pushed to high of a wattage. Which isn't a bad thing, but these are used quite a bit for house parties and I don't want to worry about them.