SDA SRS cabinets differences
Comments
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Polk said that one of the design goals going from the SRS to the SRS 1.2 was the reduction of cabinet resonance (the 1.2 and 1.2TL cabinets are identical). This was achieved with a denser, more rigid cabinet material with internal grooving to break up standing waves.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
gregmoyers wrote: »The grooves must be there for something and cabinet tuning makes the most sense. What else could it possibly be for.
I expect the goal was cabinet tuning. Standing waves doesn't make any sense to me.
Inducing deliberate cabinet deflection/resonance is my best guess. Not only is the passive radiator vibrating to the pressure nodes in the cabinet, the cabinet walls have intentional rigidity-reducing slices carved into it to promote (controlled) panel vibration.
But I wasn't there when the design was being debated. I have no "inside" information.
Fifth generation SDA SRSs used a more rigid "monocoque" cabinet design with a minimum of internal bracing. Accordingly, I would not think the grooves are there to reduce rigidity.
I don't have any inside information either, but I do know that one of the ways of reducing standing waves is asymmetrical and uneven surfaces. The grooved surfaces on the sides and bottoms of 5th generation SRS cabinets probably act like grooved acoustical panels to scatter sound.
Proud and loyal citizen of the Digital Domain and Solid State Country! -
That was my take as well.The grooved surfaces on the sides and bottoms of 5th generation SRS cabinets probably act like grooved acoustical panels to scatter sound
Whether it was marketing fluff or not I would have thought there was some science to it. -
I thought the best way to prevent waves inside a speaker cabinet was to eliminate right angle corners.
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Whatever the exact intent and the reasoning behind the grooves was, there they are and the speakers sound incredible. I think all comments here make good sense and the one fact in all of it is that Polk said they were trying to break up standing waves and reduce cabinet resonance. So they used denser material with specific groves cut in specific places, eliminated a maze of bracing and called it good to go.
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All this being said, should I put BH5 in my SRS cabinets? I have not yet and am looking for someone who has and is it an improvement at all?
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gregmoyers wrote: »All this being said, should I put BH5 in my SRS cabinets? I have not yet and am looking for someone who has and is it an improvement at all?
Absolutely, but only 3 or 4 inch wide strips behind the mid-drivers.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
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I will dynomat the drivers when I have them out. Did the PR a while ago but was too lazy to take the drivers out.
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Morning wood can be especially pleasing…gregmoyers wrote: »Very nice.
I love my wood. Don’t we all??
😂😂😂
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