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Hi Pol , Zygadr..Can you explain me please why one way is better than the other? Is confusing having two opposite opinions
Grab a piece of cardboard, EPS or similar. Place one exciter on the panel and listen. Then place a second exciter, connected paralell to the first and listen again.
by doing this we will probably get above 3 dB, but not 6dB the surface of radiation has not doubled, only the excitation power
Yes, that is kind of what I am thinking too.
..... provided to me by NXT in England as 79.6 db efficient........ the Podiums measured 89db+(Podium claim 92db) sensitive (with 4 exciters, remember).................How do you explain an increase of 10db as opposed to your ''thinking'' of : 3db?????.
I bought a Vika Amon to try. It's heavy but doesn't sound bad. It is like a hollow door. The frame is particle board 1" wide on the sides and about 6" wide on the ends where legs are attached. I cut 6" off each end and 1" off each side leaving just the surfaces and the cardboard core. Much lighter now and the sandwich stays together just fine. Now it sounds very good. The core material is thin and rigid. I find it an improvement over the 3 mil mahogany ply I tried which was quite good too. I would dearly like to get a hold of a honeycomb paper panel about 1/2" thick and experiment with treating it with shellac etc. My wife is very impressed with the Vika Amon now that it is cut down. The exposed edge looks OK too.