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Are 18", 21" pro audio subwoofers better than 12", 15" hifi subwoofers?
Are 18", 21" pro audio subwoofers better than 12", 15" hifi subwoofers?
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Old 16th February 2019, 11:17 PM   #91
kipman725 is offline kipman725  United Kingdom
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My current subs have 2*15" or 4*15" in opposed configuration, it works
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Old 17th February 2019, 12:48 PM   #92
Crashpc is offline Crashpc  Czech Republic
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I found that 21DS115s are relatively cheap in our country. It behaves nicely in larger excursions like 16-17mm. That is about 5,5-5,7l of usable displacement volume per driver. More than 18IPAL. With high Qts, it also mostly retains the IPALs great efficiency. A driver hard to beat. Got second piece last week, and yes, I think Iīm never going back with motor force ratios (cone area, mms and so on).
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Old 17th February 2019, 05:10 PM   #93
heinz1964 is offline heinz1964  Denmark
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Default New low price

Hi again

I just saw yesterday that the price of the BMS 12N630 has gone down to 209 euro a piece at thomanns.

21DS115 has a real Xmax of +/- 11 mm

best regards
uwe
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Old 17th February 2019, 05:28 PM   #94
Crashpc is offline Crashpc  Czech Republic
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That is good price indeed, Especially for those who are okay with just one piece. Cheaper than Eminence in our country.

Yes, mathematical Xmax is this number. Yet the number doesnīt tell full story about speaker usability at, or past this cone excursion. Thatīs why B&C also puts Xvar parameter in their specs. And with this particular driver, with measured with 16,5mm, I can agree that it is usable at this excursion.
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