Moble Enclosurs
10+ year member
Box Designer/Builder
Ok. I figured I would post this up so those who have questions or concerns about the time it takes me to finish a design, or generally just want to know what it may be like, will have an idea of one of the parts of the design........the vehicle info!
I am not going to say too much about what I do in the process, but basically, I take certain points in the vehicle's general cabin area, and figure for specific responses of each position of the mic, along with a specific position of the enclosure(pre-configured from the actual physical design), to arrive with specific responses that will then be figured together for a single response. Doing it this way will allow the listener to get a good idea of what the sound will be like throughout the entire space, as somewhat of an average. This "response" may differ from any specific position, unless I am designing for SPL or a specific SQ point in the vehicle, then other measures are taken as well.
The idea here is to get all of these responses, and calculate difference from them to the figured frequency response, or even the impulse response, which is where the frequency response actually comes from, and give the client an accurate idea of what the box will do within the vehicle.
Here is a picture of 24 different positions I have figured for a design in the past. You may notice there is a pattern for about 3 different "shapes" of each response group. The significance of this is the vertical change in the reflections of the vehicle. The response curve, is based more itself on a horizontal plane, as this is a more accurate perception of what we hear easier.
Overall, these responses will be put together for a single response(average) to then be configured into the anechoic response for a final response that the customer will see.
AND YES>>>THAT IS FOR ONE DESIGN!
So, the purpose of this, is to show you a single part of what I do, as a designer, to get you what you want.....along with getting those who think what I do is simply the "same" or simple per-say that it is not. This is only a single step that I take in the design portion. This sometimes may take a few days to complete alone! The response for the actual design is done differently, and may last a few days as well, considering the limitations that are included. Now, some of the things that I calculate for in the actual design are: Compression area, port area, port length, line length, throat area, mouth area, tuning/cutoff frequencies if applicable, and many more known variables that we are most familiar with. Then that information is taken in relation to the vehicle information and figured as the final response, along with losses and such as well(also averaged).
Then, the physical model has to be done, that can be quite cumbersome in staying within limitations. This can be the toughest part, though may not be the longest. So, this response example given shows ONE part, where not just a single response is figured, or a single position. The average is why some may argue that the response curve may differ from measured. This will always be a confusion for those who do not understand the process.
That's about it for now. I may add to this later for the other parts and their actual importance in the process, depending on how much information I will be willing to show.
Please keep the comments and opinions from getting into pissing matches with each other. I do not have to show anyone this, but there has been some recent arguments of what I am capable of. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif this is also not a means of showing I am better....I am not. I just have a very detailed process that those who get designs from me come to appreciate in the end. i might also be able to answer questions to a point as well.
I am not going to say too much about what I do in the process, but basically, I take certain points in the vehicle's general cabin area, and figure for specific responses of each position of the mic, along with a specific position of the enclosure(pre-configured from the actual physical design), to arrive with specific responses that will then be figured together for a single response. Doing it this way will allow the listener to get a good idea of what the sound will be like throughout the entire space, as somewhat of an average. This "response" may differ from any specific position, unless I am designing for SPL or a specific SQ point in the vehicle, then other measures are taken as well.
The idea here is to get all of these responses, and calculate difference from them to the figured frequency response, or even the impulse response, which is where the frequency response actually comes from, and give the client an accurate idea of what the box will do within the vehicle.
Here is a picture of 24 different positions I have figured for a design in the past. You may notice there is a pattern for about 3 different "shapes" of each response group. The significance of this is the vertical change in the reflections of the vehicle. The response curve, is based more itself on a horizontal plane, as this is a more accurate perception of what we hear easier.
Overall, these responses will be put together for a single response(average) to then be configured into the anechoic response for a final response that the customer will see.
AND YES>>>THAT IS FOR ONE DESIGN!
So, the purpose of this, is to show you a single part of what I do, as a designer, to get you what you want.....along with getting those who think what I do is simply the "same" or simple per-say that it is not. This is only a single step that I take in the design portion. This sometimes may take a few days to complete alone! The response for the actual design is done differently, and may last a few days as well, considering the limitations that are included. Now, some of the things that I calculate for in the actual design are: Compression area, port area, port length, line length, throat area, mouth area, tuning/cutoff frequencies if applicable, and many more known variables that we are most familiar with. Then that information is taken in relation to the vehicle information and figured as the final response, along with losses and such as well(also averaged).
Then, the physical model has to be done, that can be quite cumbersome in staying within limitations. This can be the toughest part, though may not be the longest. So, this response example given shows ONE part, where not just a single response is figured, or a single position. The average is why some may argue that the response curve may differ from measured. This will always be a confusion for those who do not understand the process.
That's about it for now. I may add to this later for the other parts and their actual importance in the process, depending on how much information I will be willing to show.
Please keep the comments and opinions from getting into pissing matches with each other. I do not have to show anyone this, but there has been some recent arguments of what I am capable of. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif this is also not a means of showing I am better....I am not. I just have a very detailed process that those who get designs from me come to appreciate in the end. i might also be able to answer questions to a point as well.
