| Re: Back EMF? [message #67473 is a reply to message #67469] |
Fri, 06 May 2011 10:06  |
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Wayne Parham
Messages: 18787
Registered: January 2001
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Illuminati (33rd Degree) |
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| Frihed89 wrote on Fri, 06 May 2011 06:21 | What is the difference, if any, between a JBL 2226H and 2226J? Which one is the "right" one?
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The 2226H is 8Ω and the JBL 2226J is 16Ω. The one you need is the 2226H.
| Frihed89 wrote on Fri, 06 May 2011 06:21 | Is the "wave guide" (please don't eat me alive) for the tweeter on the Four- Pi available from commercial vendors or made to your specs? I am in Denmark.
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It's an Eminence H290. I would be happy if you got that in Denmark, as it would save shipping charges. The most cost-effective thing for you to do is to get the crossovers from us and source everything else locally.
| Frihed89 wrote on Fri, 06 May 2011 06:21 | What happens (both the good and bad) when you add a super tweeter on the top of the box? Will it help my dog appreciate music better? Or me? I suspect it requires a new or another cross-over, correct?
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Do not use a super-tweeter. It cannot be placed within 1/4λ from the tweeter, so comb-filtering will result. You won't need the extension anyway, because the DE250 reaches to 18kHz.
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