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<blockquote data-quote="Ivan Beaver" data-source="post: 80928" data-attributes="member: 30">re: Listening Get TogetherIt depends on what you are trying to do/accomplish with the prototype.The difference in baltic birch and regular plywood is that it is much stronger.&nbsp; And how that matters in a bass cabinet is that the stiffer the wood-the less flex it has (hence the need for bracing in a sub cabinet).&nbsp; When the pieces of wood are flexing (and they do that even at a low SPL level-just harder to see/feel it), they are absorbing sound.And when the cabinet is absorbing sound-there is less coming out the front-towards the audience.So when the panels/walls are flexing-the output will be lower and the freq response could change (depending on the freq of the flexing).So when doing measurements-you may not end up with what the target was.Now some cheaper materials are fine for prototypes.&nbsp; Their problem may be that they don&#039;t hold up well on the road.&nbsp; That is fine for a prototype-who cares.So when making the choice of what materials to use (or to save money on a prototype), it is important to understand the consequences of those choices and whether or not it will affect the outcome you are trying to achieve.</blockquote>

[QUOTE="Ivan Beaver, post: 80928, member: 30"] re: Listening Get Together It depends on what you are trying to do/accomplish with the prototype. The difference in baltic birch and regular plywood is that it is much stronger. And how that matters in a bass cabinet is that the stiffer the wood-the less flex it has (hence the need for bracing in a sub cabinet). When the pieces of wood are flexing (and they do that even at a low SPL level-just harder to see/feel it), they are absorbing sound. And when the cabinet is absorbing sound-there is less coming out the front-towards the audience. So when the panels/walls are flexing-the output will be lower and the freq response could change (depending on the freq of the flexing). So when doing measurements-you may not end up with what the target was. Now some cheaper materials are fine for prototypes. Their problem may be that they don't hold up well on the road. That is fine for a prototype-who cares. So when making the choice of what materials to use (or to save money on a prototype), it is important to understand the consequences of those choices and whether or not it will affect the outcome you are trying to achieve. [/QUOTE]

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