Hi all,
Im fairly new to this so please go easy on me!
I have found some 5.5" drive units i would like to use in a loudspeaker. I am currently designing the speaker cabinet. The spec of the drive units says it needs an 11 litre sealed cabinet for optimum proformance. My question is, if i want to use 2 of these drive units in the same speaker, would i need to double the enclosure size to 22 litres, or would one 11 litre enclosure be sufficent for both drive units?
Thanks in advance!
M
Im fairly new to this so please go easy on me!
I have found some 5.5" drive units i would like to use in a loudspeaker. I am currently designing the speaker cabinet. The spec of the drive units says it needs an 11 litre sealed cabinet for optimum proformance. My question is, if i want to use 2 of these drive units in the same speaker, would i need to double the enclosure size to 22 litres, or would one 11 litre enclosure be sufficent for both drive units?
Thanks in advance!
M
Just double the volume for 2 drivers, but the bigger box may have more flex so will probably need a little more attention to bracing, so don't forget to subtract the volume of the bracing.
I generally just use a nominal 10 percent as the bracing volume and add that to the box volume first.
so 11 * 2 + 10% = 24.2litres. Just call it 25 and it is close enough as the drivers themselves need to be accounted for.
I generally just use a nominal 10 percent as the bracing volume and add that to the box volume first.
so 11 * 2 + 10% = 24.2litres. Just call it 25 and it is close enough as the drivers themselves need to be accounted for.
Many thanks for your responses, it helps a great deal talking to people with experiance.
Just so i can confirm, i am thinking about using two of these bass/mid drivers in each loudspeaker:
http://www.mcmelectronics.com/product/55-1205
With one of these tweeters in each loudspeaker:
http://cpc.farnell.com/_/dt-28n/neodymium-tweeter-100w-square/dp/LS01262
What cabinet type/size would you be tempted to use?
I'd like to add this is my first prodject and i know it won't be the best pair of speakers ever made, but hopefully it will give me a good bit of experiance for future prodjects
Just so i can confirm, i am thinking about using two of these bass/mid drivers in each loudspeaker:
http://www.mcmelectronics.com/product/55-1205
With one of these tweeters in each loudspeaker:
http://cpc.farnell.com/_/dt-28n/neodymium-tweeter-100w-square/dp/LS01262
What cabinet type/size would you be tempted to use?
I'd like to add this is my first prodject and i know it won't be the best pair of speakers ever made, but hopefully it will give me a good bit of experiance for future prodjects
The short answer is that I would not use them as a mid-woofer, even in a 50 liter box; the performance is poor with nothing below 150 Hz and power handling is modeling poorly, X-max is exceeded below 120Hz with 2 watts in a 25 liter sealed box.
As a cheap midrange they look good though.
Even though the Vas is low at 11 liters the high "Q" will give a peaky performance in a small sealed box, look for a driver with a "Qts" of about 0.42/0.55
As a cheap midrange they look good though.
Even though the Vas is low at 11 liters the high "Q" will give a peaky performance in a small sealed box, look for a driver with a "Qts" of about 0.42/0.55
Moondog55 its easy if u can calculus by this link.
http://www.hometheatershack.com/forums/enclosure-volume-calculator/
download WINISD Pro (free!!!) -
this program will let you see what a given driver can do before you part with any hard earned...
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this program will let you see what a given driver can do before you part with any hard earned...
http://www.linearteam.dk/
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