Help me, need more bright.

[raypalmer]

Just finished my new speakers. I'm sad because there's a definite little something missing... I think I need them to be brighter. So, every set up is different, help me do this without replacing tweeters or building completely new speakers.

First off I should point out that we're talking about these speakers. They don't have the best tweeters in the world but they could definitely be brighter. Playing with the x.o. is out of the question because it's too much work to get at them and they're already buried in silicone:S

I was thinking about replacing the 3300uf output caps in my LM3875 with 1500uf's, would that help?

[wintermute]

Unfortunately I think the best way of dealing with this would be to change the values of the resistors in your LPAD. (the series and parallel resistors on your tweeter). These attenuate the tweeter. I doubt changing the caps on your chipamp is going to help. You could boost the trebel with an eq circuit I guess but I think tinkering with the crossover is the best bet...

Tony.

[tinitus]

Try and disconnect the 10ohm paralel pad resistor
Or, try and remove the series 2,2ohm between amp and tweeter xo

Maybe also try adjustment to the 2.2ohm zobel resistor on woofer
Try slightly bigger resistor

Man, thats a lot of 2.2ohm resistors

Personally I would try and remove the series 10uf on tweeter, and reverse phase
But that might be a bit radical

[raypalmer]

Unfortunately (stupidly) I settled on this design too early, now they've broken in or I've gotten used to them but it's too late. The x.o. is pretty much inaccessible without totally tearing these apart.

L-Pad across the woofer lines maybe?

[raypalmer]

I suppose the other choice would be to find a tweeter with similar dynamics but a higher spl...

[PeteMcK]

perhaps you could try something like this contour network, perhaps with a series resistor wired across the tweeter crossover - results are likely to play merry hell with what the xover is doing though:
http://www.diyaudioandvideo.com/Calc...tour/Help.aspx

[raypalmer]

Originally Posted by PeteMcK

perhaps you could try something like this contour network, perhaps with a series resistor wired across the tweeter crossover - results are likely to play merry hell with what the xover is doing though:
http://www.diyaudioandvideo.com/Calc...tour/Help.aspx

Yar-har! That's the kind of thing I need, being as the x.o. is buried so deep it may as well be on the moon.

But I might need a bit of help with this:

"The first is a RL (Resistor & Inductor) network that is used when the response is rising as the frequency increases. The other network is a RC (Resistor & Capacitor) network for drivers whose response is rising as the frequency decreases."

That couldn't be more convoluted... I want an RC network right? Because it counter-acts a rising response as freq. decreases, so ipso facto it will raise response as freq. rises?




????