Posted by Wayne Parham [ 70.234.134.147 ] on April 11, 2008 at 12:41:12:

In Reply to: Re: You've got mail! posted by Rick on April 10, 2008 at 14:14:41:

The black terminal is positive on the B&C DE250. The JBL 2226 is also connected with the black terminal being positive. The Delta 10 positive terminal is labeled "+".

Some compression drivers are connected internally with the diaphragm moving "forward" (away from the magnet) with positive voltage applied to the red terminal. Others are connected so there is positive pressure at the throat when positive voltage is applied to the red terminal, which is the exact opposite.

The B&C DE250 is a little louder than the PSD2002, so use 25Ω for R1 instead of 16Ω. The rest of the tweeter circuit remains the same. If you're using a Delta 10 midrange driver, then L2 is 0.5mH.

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