Best Value 18" subwoofer driver

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Hoping to build a new subwoofer to go along with some 2 pi speakers I'll be building this winter. Unfortunately, I've been planning to use the SI HT18 for the longest time and it just recently has been discontinued. So no using that I guess. In my mind, that was literally the ultimate value when it came to subwoofers; ridiculous displacement for only 160$. Now I'm looking for a replacement that could fill those shoes I had planned for the HT18. My biggest goal is to be able to hit down to 20hz with authority. Currently I have a Sundown Audio E12 v2 in a Transmission line enclosure (that was previously in my car, but it was the best I had at the time). It can dig down that deep, but not with any real power. Hoping to remedy that with more displacement 😀. Any recommendations under 200$?
 
Hoping to build a new subwoofer to go along with some 2 pi speakers I'll be building this winter. Unfortunately, I've been planning to use the SI HT18 for the longest time and it just recently has been discontinued. So no using that I guess. In my mind, that was literally the ultimate value when it came to subwoofers; ridiculous displacement for only 160$. Now I'm looking for a replacement that could fill those shoes I had planned for the HT18. My biggest goal is to be able to hit down to 20hz with authority. Currently I have a Sundown Audio E12 v2 in a Transmission line enclosure (that was previously in my car, but it was the best I had at the time). It can dig down that deep, but not with any real power. Hoping to remedy that with more displacement 😀. Any recommendations under 200$?

I made a spreadsheet for that. You're right, the SI gives you the most 'bang for the buck.' But the Alpine SWS-15 is available from Amazon, Google Shopping, and your local car audio dealer. And it delivers 85% of the value of the SI sub.

http://www.diyaudio.com/forums/subwoofers/229991-alpine-type-s-your-value-leader.html#post3369127
 
...It can dig down that deep, but not with any real power...

Hi CaptCrawfish,

Sugg.: Try instead a T-TQWT:

Adding a Sub (T-TQWT) using Alpine_SWR-15D2.

b🙂
 

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