| Re: 6.5" OB "bookshelf" speakers
So I figured the falling tweeter response could be from rising impedene. So, I tried to do impedence matching by adding and changing resistor R3a. Here is a plot with different R3b values:
Red: R3b = infinate (no resistor)
Yellow: R3b = 20 ohms
Pink: R3b = 8 ohms.
As you can see this is not the problem I'm having as there is little difference between these values. So, I'm left with two theories;
1) The TN28 doesn't play as high as advertised. I think this drop-off is too severe to be a small error in specs.
2) The soundcard on my fiancee's Mac G4 sucks. Given my experience with this so far this is my current leading theory - especially since the tweeters *sound* good.
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