OffTopic (Drive Units)

by Jose Hidalgo , Wednesday, April 18, 2007, 17:41 (6218 days ago)

Just a reminder for Bert, if he comes across this topic. I'd like an answer to the following questions please :

1°) Regarding the enclosures, your BR enclosures would suit us well. However, I have noticed (WinIsd) that a big BR enclosure (165L or more) will create a lot of group delay under 60 Hz, while allowing us to gain very few SPL (which we don't want since we're already over 105). Moreover, the Xmax of the BD15 (6mm, is it right ?) will be exceeded before 30 Hz in that case. A smaller enclosure (120L ?) would allow us to have less group delay, at the price of a single dB @ 30 Hz (104 instead of 105 - big deal ), and with an Xmax exceeded well under 30 Hz. Wouldn't that be better for us ? Or do you see other problems with a smaller enclosure ?

2°) One last question : does someone have some measurement graphs for the DB15 ? We'd really like to have a look at the response, distorsion and impedance graphs for instance. I hope it's possible. Thanks in advance.

Thanks in advance / Jose

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