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Double 10 and Horn
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<blockquote data-quote="Max Warasila" data-source="post: 204534" data-attributes="member: 3845"><p>Chris,</p><p></p><p>Of course you want to make it a 12 - I just sorted out how to make the 10" work! :lol:</p><p></p><p>I try to avoid slot ports if at all possible. They just get worse airflow than other geometries, period. Add in the complications of the trap box and it turns out that it doesn't net as much as I'd want anyway. I was considering some more creative port geometries, but you wanted to keep the construction simple, so I just stuck with PVC pipe ports or very simple round ports as shown in this the attached drawings (anyone feel free to use these to go off of for a MTM version of this cabinet and ask me questions regarding it).</p><p></p><p>I'd like to actually get a good description of the different series that B&C has (as far as the model IDs go, such as NW, NDL, etc.) As I understand it, though, the NDL series uses an internal Nd slug and balances performance with weight, while the NW series uses a Nd ring and is more intended for bass performance in smaller cabinets - and by "as I understand it" I literally mean I basically took that right from the B&C website. Really what drives driver choice is the actual parameters and performance of the drivers themselves, not what series they are from.</p><p></p><p>Bennett - is there a good way to explain the model numbering system at B&C? PM or email me if you'd prefer.</p><p></p><p>John,</p><p></p><p>I personally use WinISD to get a general idea where to start. It's important (and has been stressed to me by several people), that the models that WinISD shows are only applicable to smaller signals and are not directly representative of actual performance. It simply does a lot of the math to develop a general alignment as you desire instead of having to do it by hand. I would expect that the cabinet suggestion you got was simply for a standard Qt of .707, but that is more certainly not the ideal alignment for this application.</p><p></p><p>The important thing to remember is that the calculators are tools to inform your design, not the final result. You will have to prototype your cabinets to confirm that it will work as expected and to finalize designs.</p></blockquote><p></p>
[QUOTE="Max Warasila, post: 204534, member: 3845"] Chris, Of course you want to make it a 12 - I just sorted out how to make the 10" work! :lol: I try to avoid slot ports if at all possible. They just get worse airflow than other geometries, period. Add in the complications of the trap box and it turns out that it doesn't net as much as I'd want anyway. I was considering some more creative port geometries, but you wanted to keep the construction simple, so I just stuck with PVC pipe ports or very simple round ports as shown in this the attached drawings (anyone feel free to use these to go off of for a MTM version of this cabinet and ask me questions regarding it). I'd like to actually get a good description of the different series that B&C has (as far as the model IDs go, such as NW, NDL, etc.) As I understand it, though, the NDL series uses an internal Nd slug and balances performance with weight, while the NW series uses a Nd ring and is more intended for bass performance in smaller cabinets - and by "as I understand it" I literally mean I basically took that right from the B&C website. Really what drives driver choice is the actual parameters and performance of the drivers themselves, not what series they are from. Bennett - is there a good way to explain the model numbering system at B&C? PM or email me if you'd prefer. John, I personally use WinISD to get a general idea where to start. It's important (and has been stressed to me by several people), that the models that WinISD shows are only applicable to smaller signals and are not directly representative of actual performance. It simply does a lot of the math to develop a general alignment as you desire instead of having to do it by hand. I would expect that the cabinet suggestion you got was simply for a standard Qt of .707, but that is more certainly not the ideal alignment for this application. The important thing to remember is that the calculators are tools to inform your design, not the final result. You will have to prototype your cabinets to confirm that it will work as expected and to finalize designs. [/QUOTE]
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