what would be the ideal box for SQ for this subwoofer model with good low end extension? I dont like the recommended enclosure size from the manufacture as it seems much too small and very limiting on low end extension and I prefer efficiency. using less watts instead of more watts of power.
i have no constraints on space as im using it in my bedroom so it can be up to like 4 cubic feet as a reasonable upper limit
https://images-na.ssl-images-amazon.com/images/I/61f2gV2fo-L._SL1000_.jpg
i have no constraints on space as im using it in my bedroom so it can be up to like 4 cubic feet as a reasonable upper limit
https://images-na.ssl-images-amazon.com/images/I/61f2gV2fo-L._SL1000_.jpg
In theory, a TL tuned to Fs/Qts', though may not fit in 4 ft^3:
Qts' = Qts + any added series resistance [Rs]: HiFi Loudspeaker Design
GM
Qts' = Qts + any added series resistance [Rs]: HiFi Loudspeaker Design
GM
the box i have available right now to use is a dual sub box tuned to 34hz at 1.8 cubic feet of space per subwoofer
Yes
And the subwoofer box has separate chambers for each subwoofer with separate ports. so i can run just one sub if I want or two.
I plan on getting another one of that brand next month because i really like how clean it sounds and smooth and want to have both subwoofer chambers of the box having a subwoofer
And the subwoofer box has separate chambers for each subwoofer with separate ports. so i can run just one sub if I want or two.
I plan on getting another one of that brand next month because i really like how clean it sounds and smooth and want to have both subwoofer chambers of the box having a subwoofer
What? I mean I answered your original Q, but it's irrelevant based on your recent revelations as I understand the situation, so you'll have to be more specific.
GM
GM
That is NOT a subwoofer in anything but a car. Fs is too high and Qts way too high to be used in a box, ESPECIALLY a ported one. I think Qts is even too high for a bandpass... Can't say if it could work in a TL or not.
This WOULD make a nice open baffle woofer... response only goes down to Fs, which is just over 40Hz. Efficiency (SPL@1W) probably not very good, since often a small magnet is used to get a high Qts. This is why the driver is cheap, and on Ebay! OB is the only way you are going to get any kind of "good SQ" outta this thing.
This WOULD make a nice open baffle woofer... response only goes down to Fs, which is just over 40Hz. Efficiency (SPL@1W) probably not very good, since often a small magnet is used to get a high Qts. This is why the driver is cheap, and on Ebay! OB is the only way you are going to get any kind of "good SQ" outta this thing.
I got it on amazon and i tested it in the box and it sounds just great. gets loud and actually goes lower than my other subwoofer I used to have that had a lower FS. it gets louder at the same power. around 22 to 65hz which is my usable range
my old sub had lower output around 22 to 50hz even though it had a lower FS around 20hz. it didnt hit as hard around 22 to 40hz.
this new sub actually hits harder and louder around 22 to 65hz because the higher FS. lighter cone it has more excursion at the same power in this range and actually seems more usable.
the old sub had poor sensitivity due to heavy plastic cone with low 20hz FS
I have made a video of it in action playing about 50% of its rated power. it moves way more than my old sub and gives more more usable output. also has very good clean excursion with low mechanical noise. compared to my old sub that sounded very noisy and didnt hit as hard around 20 to 65hz as this new one does.
it can be also bought on amazon or DS18's webpage but i got it from amazon
DS18 12-inch SELECT subwoofer heres video of it playing and it hits pretty hard i just need more power to really get it going it'll be even louder then. i need a more powerful amp to really hit the low notes.
with some break in the FS quickly dropped to around 30hz the specs listed must be for the sub with no break in at all.
my old sub had lower output around 22 to 50hz even though it had a lower FS around 20hz. it didnt hit as hard around 22 to 40hz.
this new sub actually hits harder and louder around 22 to 65hz because the higher FS. lighter cone it has more excursion at the same power in this range and actually seems more usable.
the old sub had poor sensitivity due to heavy plastic cone with low 20hz FS
I have made a video of it in action playing about 50% of its rated power. it moves way more than my old sub and gives more more usable output. also has very good clean excursion with low mechanical noise. compared to my old sub that sounded very noisy and didnt hit as hard around 20 to 65hz as this new one does.
it can be also bought on amazon or DS18's webpage but i got it from amazon
DS18 12-inch SELECT subwoofer heres video of it playing and it hits pretty hard i just need more power to really get it going it'll be even louder then. i need a more powerful amp to really hit the low notes.
with some break in the FS quickly dropped to around 30hz the specs listed must be for the sub with no break in at all.
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VAS at 33L for a 12" is beyond stiff, which is why the box recommendation is so small. So pour on the power + eq and smile. 17mm is big xmax unless it's p-p, which is still decent. I have an older Polk Momo 10" in a too small box that surprised me when driven hard. With boost.
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I have it in the 1.8 cubic feet 34hz tuned box and it sounds great.
I broke it in really good yesterday running close to max safe excursion free air around 30 to 39hz for a few hours and its super loosened up
when i first got it out of the box it was so stiff i couldn't even push it in a few millimeters when using safe amount of force pushing on it
but now it moves almost an half an inch
and the spider was super stiff too when i felt it it felt like plastic almost. but now it feels more like soft fabric and i can press around on it and it moves pretty easily
after the heavy breaking in in free air its hitting the lows super good and clean
it has pretty good clean excursion free air too. no bad mechanical noise just the sound of air coming out the spider venting and pole piece venting a bit.
I broke it in really good yesterday running close to max safe excursion free air around 30 to 39hz for a few hours and its super loosened up
when i first got it out of the box it was so stiff i couldn't even push it in a few millimeters when using safe amount of force pushing on it
but now it moves almost an half an inch
and the spider was super stiff too when i felt it it felt like plastic almost. but now it feels more like soft fabric and i can press around on it and it moves pretty easily
after the heavy breaking in in free air its hitting the lows super good and clean
it has pretty good clean excursion free air too. no bad mechanical noise just the sound of air coming out the spider venting and pole piece venting a bit.
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Sounds like you've got something you're happy with, which is great.
If you're interested, try running it through something like WinISD and I think you'll see why the high Qts can pose problems.
FWIW, I'd be looking at using it on an OB speaker, with a 3-5" full-range driver for a cute little system.
Chris
If you're interested, try running it through something like WinISD and I think you'll see why the high Qts can pose problems.
FWIW, I'd be looking at using it on an OB speaker, with a 3-5" full-range driver for a cute little system.
Chris
the frequency response graph thing it shows is a huge load of BS. it quickly drops off around 200 to 350hz in my testing. even 500hz is many dB quieter than 100hz
sounds nothing like a "full range" type of speaker like a 12" guitar speaker
it sounds more like a subwoofer no matter where I put my ear even straight in line with the dustcap i dont really hear above 300 to 500hz at best.
when testing with the low pass filter turned off.
sounds nothing like a "full range" type of speaker like a 12" guitar speaker
it sounds more like a subwoofer no matter where I put my ear even straight in line with the dustcap i dont really hear above 300 to 500hz at best.
when testing with the low pass filter turned off.
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