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RE: accelerometer

Posted by JBen (A) on August 20, 2010 at 00:39:42

In Reply to: RE: accelerometer posted by pictureguy on August 19, 2010 at 22:36:02:

I was saying these material just for effect. You get the idea.

Corian has been mentioned here in the past; perhaps by yourself? At the time I first saw it, I liked the concept. However, I still thought wood would be better...until recently. You see, at that point, I had a misunderstanding about "real" frames, of the PG kind.

Not ever having heard "framed" Maggies, I thought that they actually worked by making the frame stiffer. My own experience with the wood P-Frames sort of misled me into thinking that this was the case. Being wood, they worked (sound-wise).

Then, in recent discussion, I realized that frame users were reporting MORE vibration felt on their wood frames. Plus they were HAPPY about it. Further reading confirmed that the claim is of "redirecting" the vibration. It seems like they actually want the wood to color the sound to a more acceptable tone?

Time-out, I said to myself. These wood P-Frames are vibrating LESS, and so is the MDF it is firmly clamped on to. Plus things sound great. The stiffer the P-Frames, the better. Something does not add up here. To me, these P-Frames are killing vibrations and/or, more likely, forcing them to come out where they should, the Mylar...as sound.

This happened just as I was testing the Razoring tweaks. The shock of seeing these work so much better than I expected, forced me to attempt to be sure. Razoring seemed worth using and endorsing. So, I was more observant, measured what I could more than ever, and repeated everything I could.

It is a pity that I only found a better way to guage musical impulse energy AFTER I had already done the first Razoring stage. (If I just removed the P-Frames, initially, my MMGs were left in stock MDF, with no damping just yet.) Still, a Radio Shack meter in the early tests, when used in peak reading mode, began to tell. That was at the beginning of over 2 months of testing.

It all suggests that the extent to which I increasingly stiffen the frame and/or the pole piece, may be helping to keep more enery coming from the Mylar itself. That energy comes as better sound.

When unmodded, it appears that the majority of the losses happen on the stronger impulses. On stock MDF alone, the amount of peaks that get cancelled by not having the P-Frames (or even real frames, I am sure) is impressive. These are, primarily, the low frequency impulses. Full-Razoring helps, but largely in the upper-bass and midrange. The combination always measures -- and sounds -- better than the separate parts.

My hope is that if we help people like you to measure from the beginning, when the Maggies are still stock, a better understanding of the real behaviors and the contributing factors, will emerge. I am not talking about theories. This is about defining repeatable methods and widening choices for all.

Having said all this litany, one thing totally puzzles me:
Your "Bamboo would be interesting to try.
I have been condsidering the very same thing for a couple of weeks now!!!

This post is made possible by the generous support of people like you and our sponsors:

Kimber Kable

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