Re: 2-Way Speaker Project
I do appreciate all of the knowledge that can be found here so, Thank You! And, don't beat this old man up too bad.. 😀
I found a pair of component car speakers for a good price and figured that I'd make a project out of them. (One of the few that has any T/S Specs!)
FUSION CP-CM50 5.25" (13CM) COMPONENT SPEAKERS
Ok.. Got speakers and some numbers. Now I gotta figure an enclosure.. (Sealed)
I used this online calculator with the numbers that I have.. (Vas/Fs/Qts)
Speaker Box Enclosure Designer / Calculator
The calculator said .26ft. of volume and I understand the magnet and such is going to use up some of the internal volume. So, I took the mounting specs of the speaker and rounded to the closest inch. (2.25 x 4.75) A bit of overkill but the speakers have a crossover network/wiring that will be inside of the enclosure also. I plugged these numbers into the following online calculator to find that volume..
Calculate gravel and sand coverage in a cylindrical aquarium
That came out to 39.87 inches. I added that sum to the .26ft. (449.28") and came up with 489.15". I then added 10% of volume for adding some internal damping material. (48.915") That comes out to a grand total of 538.065" of needed internal volume..
I figured an enclosure with the I.D. measurements of 7 x 7 x 11 inches. This gives me an internal volume of 539 inches.. (Using 3/4" plywood)
I know that I cheated and rounded a little but how close am I? Is it worth my effort? The speakers were cheap in price but after reading some reviews, they seem to be of some quality..
Thanks in Advance!
I do appreciate all of the knowledge that can be found here so, Thank You! And, don't beat this old man up too bad.. 😀
I found a pair of component car speakers for a good price and figured that I'd make a project out of them. (One of the few that has any T/S Specs!)
FUSION CP-CM50 5.25" (13CM) COMPONENT SPEAKERS
Ok.. Got speakers and some numbers. Now I gotta figure an enclosure.. (Sealed)
I used this online calculator with the numbers that I have.. (Vas/Fs/Qts)
Speaker Box Enclosure Designer / Calculator
The calculator said .26ft. of volume and I understand the magnet and such is going to use up some of the internal volume. So, I took the mounting specs of the speaker and rounded to the closest inch. (2.25 x 4.75) A bit of overkill but the speakers have a crossover network/wiring that will be inside of the enclosure also. I plugged these numbers into the following online calculator to find that volume..
Calculate gravel and sand coverage in a cylindrical aquarium
That came out to 39.87 inches. I added that sum to the .26ft. (449.28") and came up with 489.15". I then added 10% of volume for adding some internal damping material. (48.915") That comes out to a grand total of 538.065" of needed internal volume..
I figured an enclosure with the I.D. measurements of 7 x 7 x 11 inches. This gives me an internal volume of 539 inches.. (Using 3/4" plywood)
I know that I cheated and rounded a little but how close am I? Is it worth my effort? The speakers were cheap in price but after reading some reviews, they seem to be of some quality..
Thanks in Advance!
Since speakers can vary quite a bit in specs from what the manufacturer states, I'd say anything within about 25% is close enough. More expensive drivers from highly reputable brands tend to be pretty consistent and close to spec, but off brands and cheap drivers tend to not be very consistent. Car audio especially, since it is assumed that they will be put in a small enclosure of a size that varies with every model of car, it's nearly impossible to model/predict the response anyway.
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Thanks for your thoughts. I know that most car speakers aren't the best of quality but they make good training wheels, being that there are some actual T/S specs to work with.. *And, I didn't break the bank and can burn 'um if they suk..*
Assuming I had a better quality driver to work with and the specs being more true, do my calculations seem anywhere near correct with the methods that I used? I'd like to be closer than a 25% margin..
I looked at a few calculation software programs but they just blew me away! They ask things that I have no idea of what they are! I just know that an enclosure should be a certain size per the characteristics of the driver(s) and I'm trying to find a simple way to figure it. (Or, come close at least)
This is the kinda stuff that scares the pants off us noobs. (Me at least) I wouldn't mind spending some cash for some quality drivers and build something if I knew for sure that my efforts would be worthwhile. I want to design it, build it, sit in front of it, drink a few beers, and feel proud!
I'm in kindergarten of speaker design. I've done a couple of small projects that didn't turn out too bad and now I have the same disease that everyone else has around here..
Thanks Alot..
Assuming I had a better quality driver to work with and the specs being more true, do my calculations seem anywhere near correct with the methods that I used? I'd like to be closer than a 25% margin..
I looked at a few calculation software programs but they just blew me away! They ask things that I have no idea of what they are! I just know that an enclosure should be a certain size per the characteristics of the driver(s) and I'm trying to find a simple way to figure it. (Or, come close at least)
This is the kinda stuff that scares the pants off us noobs. (Me at least) I wouldn't mind spending some cash for some quality drivers and build something if I knew for sure that my efforts would be worthwhile. I want to design it, build it, sit in front of it, drink a few beers, and feel proud!
I'm in kindergarten of speaker design. I've done a couple of small projects that didn't turn out too bad and now I have the same disease that everyone else has around here..
Thanks Alot..
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