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Understandable Results [message #49030 is a reply to message #49007]

Mon, 06 March 2006 13:35

FredT
Messages: 704
Registered: May 2009

Illuminati (1st Degree)

My 3 Pi's sounded very live to me with 3/4" mdf as the enclosure material and a single window frame brace between the woofer and tweeter. I subsequently lined the interior with 3/8" plywood panels attached with a generous layer of liquid nails, and this tamed quite a bit of the boominess. I suspect the culprit was the vibration in the enclosure walls, which I could easily feel by holding my hand on a panel while playing a recording with strong bass content. Adding the plywood panels did compromise the interior volume a bit, but the overall result was worth it. The 1-1/4" sonic barrier that LAL used is a multi constrained layer damping material which I would expect to make a difference if the speaker's liveliness is caused by the panels ringing.

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[Message index]

		Stage 4Pi improvement By: LAL on Sat, 04 March 2006 10:39
		Re: Stage 4Pi improvement By: Pfenning on Sat, 04 March 2006 11:10
		Re: Stage 4Pi improvement By: LAL on Sat, 04 March 2006 14:18
		Re: Stage 4Pi improvement By: Matts on Sat, 04 March 2006 21:50
		Re: Stage 4Pi improvement By: LAL on Sun, 05 March 2006 10:23
		Re: No offense, Matts, but By: Bill Epstein on Sun, 05 March 2006 12:32
		Re: No offense, Matts, but By: Matts on Sun, 05 March 2006 13:06
		Re: No offense, Matts, but By: Manualblock on Sun, 05 March 2006 18:34
		Re: No offense, Matts, but By: LAL on Sun, 05 March 2006 19:44
		Re: No offense, Matts, but By: Matts on Sun, 05 March 2006 21:02
		Re: No offense, Matts, but By: LAL on Sun, 05 March 2006 21:22
		TRUE SONICS By: j.luis cruz . on Mon, 06 March 2006 09:19
		Earplugs By: Wayne Parham on Mon, 06 March 2006 09:28
		Re: No offense, Matts, but By: dB on Tue, 07 March 2006 05:43
		Re: No offense, Matts, but By: Manualblock on Wed, 08 March 2006 06:52
		Re: First order x-over By: dB on Wed, 08 March 2006 07:37
		Re: First order x-over By: Manualblock on Wed, 08 March 2006 13:18
		Re: No offense, Matts, but By: Manualblock on Mon, 06 March 2006 09:43
		Re: No offense, Matts, but By: Bill Epstein on Sun, 05 March 2006 18:54
		Re: No offense, Matts, but By: Matts on Sun, 05 March 2006 21:06
		Re: Stage 4Pi improvement By: GarMan on Mon, 06 March 2006 08:54
		Re: Stage 4Pi improvement By: ToFo on Mon, 06 March 2006 13:17
		Re: Stage 4Pi improvement By: LAL on Tue, 07 March 2006 14:32
		Re: Stage 4Pi improvement By: GarMan on Wed, 08 March 2006 07:30
		Understandable Results By: FredT on Mon, 06 March 2006 13:35

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