Home » Sponsored » Pi Speakers » My CH-3's finally came in
My CH-3's finally came in [message #35125] Wed, 13 February 2002 15:44 Go to next message
Adam is currently offline  Adam
Messages: 419
Registered: May 2009
Illuminati (1st Degree)
They are somehow smaller then I imagined them, but that's fine... Now I have compression drivers and horns and no damn crossover components!!! I don't have the 8.2 uf cap I need on my network (First cap in HP network). ARGHH!!! I guess it's time for an electrolyte temp... Don't have the resistors, either. I'll have to use my adjustable L-pads for now.

Wayne, these things are really thick, do you countersink them? It would seem a wise move to me that would cut down on diffraction problems on the baffle.

Adam

Re: My CH-3's finally came in [message #35126 is a reply to message #35125] Wed, 13 February 2002 22:45 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18683
Registered: January 2001
Illuminati (33rd Degree)
We're talking about 1/4", which is equivalent to one wavelength of 54kHz. It's acoustically small, so there's nothing to worry about. Oon the other hand, flush mounting is cosmetically attractive and some DIY builders have routed their baffles to flush mount their woofers and tweeter horns. If you are considering it, do it for aesthetics only and don't expect to notice a difference in the sound.
Re: My CH-3's finally came in [message #35133 is a reply to message #35126] Fri, 15 February 2002 09:34 Go to previous messageGo to next message
Crazy Dave is currently offline  Crazy Dave
Messages: 67
Registered: May 2009
Viscount
If you are concerned about diffraction, an alternative would be to surround the driver with an equal thickness of felt or wool. This would let you know if defraction is an issue, is easy to A/B and it is reversable. AR used to do this in the 70s.

Dave

Re: My CH-3's finally came in [message #35135 is a reply to message #35125] Fri, 15 February 2002 10:37 Go to previous message
BillEpstein is currently offline  BillEpstein
Messages: 886
Registered: May 2009
Illuminati (2nd Degree)
Be careful when you tighten down the bolts. It only took a few times for the heads to work into the soft plastic of the horn. Wish I had found bolts with bigger heads or used washers from the start.
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