Pillows around speakers
Tourer
Joined: Mar 2010
Posts: 274
Likes: 3
From: Portage, IN
When you put fiber fill in a speaker enclosure there is a specific reason for it. This is mainly used for woofers. When a woofer is in an enclosure (usually a sealed enclosure) it pumps outward on the signal and back inward on the opposite phase of the signal. basically the same frequency but outward in phase and inward out of phase. All speakers work this way. Now. When a woofer is mounted in an enclosure it depends on the volume of air inside the enclosure to help control the cone movement. The reason a speaker is in an enclosure is so that the sound wave made by the back of the cone (out of phase) does not meet the sound wave in front of the cone. if the two waves meet they will cancel each other out and pretty much no sound will be heard. Low frequency is more prone to this than high frequency just because of the speed of the sound wave and the room needed to let the wave develop. So what fiber fill (stuffing) does is it slows down the wave behind the cone so that the cone reacts as if it is in a larger enclosure than it actually is. If no fill is put in the wave will come off the back and hit the hard wall of the enclosure in a very short amount of time and distance. With fill it moves slower (imagine trying to run in a swimming pool with the water resistance) thru the air inside the enclosure. So really the main reason for fill inside of an enclosure is to control the speaker movement. It usually is specified of how much fill is put inside "loosely" depending on the speaker design and the enclosure size in cubic volume.
Now in a vented or ported enclosure the vent is made to a specific amount of cubic space that affects certain frequencies. If the frequencies above a desired frequency are allowed to escape thru the port and meet the front wave of the same frequency, they will cancel each other out and that will strengthen the overall sound of the DESIRED frequencies. It also allows less resistance on the speaker so that it takes less power in wattage to give a certain decibel output. Sealed subwoofer enclosures generally require more power (wattage) to put out the same decibel output versus a vented or ported enclosure. A speaker will generally be rated to work best in a sealed box or a vented box and what size in cubic feet. Some speakers are ok to use in what is called "infinite baffle" applications. This means that as long as there is a barrier that keeps the front wave from meeting the back wave, the size of the enclosure on the back does not matter...Then finally there is a bandpass encloure where the speaker is mounted completely inside of the enclosure with the front part vented to a certain size port and the rear of the speaker is vented in a different sized port. These ports allow sound frequencies above AND below the desred frequencies to cancel out and allow a certain "band" of frequencies "pass" thru
....
Now in a vented or ported enclosure the vent is made to a specific amount of cubic space that affects certain frequencies. If the frequencies above a desired frequency are allowed to escape thru the port and meet the front wave of the same frequency, they will cancel each other out and that will strengthen the overall sound of the DESIRED frequencies. It also allows less resistance on the speaker so that it takes less power in wattage to give a certain decibel output. Sealed subwoofer enclosures generally require more power (wattage) to put out the same decibel output versus a vented or ported enclosure. A speaker will generally be rated to work best in a sealed box or a vented box and what size in cubic feet. Some speakers are ok to use in what is called "infinite baffle" applications. This means that as long as there is a barrier that keeps the front wave from meeting the back wave, the size of the enclosure on the back does not matter...Then finally there is a bandpass encloure where the speaker is mounted completely inside of the enclosure with the front part vented to a certain size port and the rear of the speaker is vented in a different sized port. These ports allow sound frequencies above AND below the desred frequencies to cancel out and allow a certain "band" of frequencies "pass" thru
....
Road Warrior
Joined: May 2009
Posts: 1,537
Likes: 4
From: The Great River Road, Wisconsin
Id give it a 10
Extreme HDF Member
Joined: Feb 2008
Posts: 13,422
Likes: 2
From: Las Cruces, NM
When you put fiber fill in a speaker enclosure there is a specific reason for it. This is mainly used for woofers. When a woofer is in an enclosure (usually a sealed enclosure) it pumps outward on the signal and back inward on the opposite phase of the signal. basically the same frequency but outward in phase and inward out of phase. All speakers work this way. Now. When a woofer is mounted in an enclosure it depends on the volume of air inside the enclosure to help control the cone movement. The reason a speaker is in an enclosure is so that the sound wave made by the back of the cone (out of phase) does not meet the sound wave in front of the cone. if the two waves meet they will cancel each other out and pretty much no sound will be heard. Low frequency is more prone to this than high frequency just because of the speed of the sound wave and the room needed to let the wave develop. So what fiber fill (stuffing) does is it slows down the wave behind the cone so that the cone reacts as if it is in a larger enclosure than it actually is. If no fill is put in the wave will come off the back and hit the hard wall of the enclosure in a very short amount of time and distance. With fill it moves slower (imagine trying to run in a swimming pool with the water resistance) thru the air inside the enclosure. So really the main reason for fill inside of an enclosure is to control the speaker movement. It usually is specified of how much fill is put inside "loosely" depending on the speaker design and the enclosure size in cubic volume.
Now in a vented or ported enclosure the vent is made to a specific amount of cubic space that affects certain frequencies. If the frequencies above a desired frequency are allowed to escape thru the port and meet the front wave of the same frequency, they will cancel each other out and that will strengthen the overall sound of the DESIRED frequencies. It also allows less resistance on the speaker so that it takes less power in wattage to give a certain decibel output. Sealed subwoofer enclosures generally require more power (wattage) to put out the same decibel output versus a vented or ported enclosure. A speaker will generally be rated to work best in a sealed box or a vented box and what size in cubic feet. Some speakers are ok to use in what is called "infinite baffle" applications. This means that as long as there is a barrier that keeps the front wave from meeting the back wave, the size of the enclosure on the back does not matter...Then finally there is a bandpass encloure where the speaker is mounted completely inside of the enclosure with the front part vented to a certain size port and the rear of the speaker is vented in a different sized port. These ports allow sound frequencies above AND below the desred frequencies to cancel out and allow a certain "band" of frequencies "pass" thru....
Now in a vented or ported enclosure the vent is made to a specific amount of cubic space that affects certain frequencies. If the frequencies above a desired frequency are allowed to escape thru the port and meet the front wave of the same frequency, they will cancel each other out and that will strengthen the overall sound of the DESIRED frequencies. It also allows less resistance on the speaker so that it takes less power in wattage to give a certain decibel output. Sealed subwoofer enclosures generally require more power (wattage) to put out the same decibel output versus a vented or ported enclosure. A speaker will generally be rated to work best in a sealed box or a vented box and what size in cubic feet. Some speakers are ok to use in what is called "infinite baffle" applications. This means that as long as there is a barrier that keeps the front wave from meeting the back wave, the size of the enclosure on the back does not matter...Then finally there is a bandpass encloure where the speaker is mounted completely inside of the enclosure with the front part vented to a certain size port and the rear of the speaker is vented in a different sized port. These ports allow sound frequencies above AND below the desred frequencies to cancel out and allow a certain "band" of frequencies "pass" thru
....
Club Member
Joined: Jul 2012
Posts: 2,697
Likes: 10
From: San Angelo, Texas
When you put fiber fill in a speaker enclosure there is a specific reason for it. This is mainly used for woofers. When a woofer is in an enclosure (usually a sealed enclosure) it pumps outward on the signal and back inward on the opposite phase of the signal. basically the same frequency but outward in phase and inward out of phase. All speakers work this way. Now. When a woofer is mounted in an enclosure it depends on the volume of air inside the enclosure to help control the cone movement. The reason a speaker is in an enclosure is so that the sound wave made by the back of the cone (out of phase) does not meet the sound wave in front of the cone. if the two waves meet they will cancel each other out and pretty much no sound will be heard. Low frequency is more prone to this than high frequency just because of the speed of the sound wave and the room needed to let the wave develop. So what fiber fill (stuffing) does is it slows down the wave behind the cone so that the cone reacts as if it is in a larger enclosure than it actually is. If no fill is put in the wave will come off the back and hit the hard wall of the enclosure in a very short amount of time and distance. With fill it moves slower (imagine trying to run in a swimming pool with the water resistance) thru the air inside the enclosure. So really the main reason for fill inside of an enclosure is to control the speaker movement. It usually is specified of how much fill is put inside "loosely" depending on the speaker design and the enclosure size in cubic volume.
Now in a vented or ported enclosure the vent is made to a specific amount of cubic space that affects certain frequencies. If the frequencies above a desired frequency are allowed to escape thru the port and meet the front wave of the same frequency, they will cancel each other out and that will strengthen the overall sound of the DESIRED frequencies. It also allows less resistance on the speaker so that it takes less power in wattage to give a certain decibel output. Sealed subwoofer enclosures generally require more power (wattage) to put out the same decibel output versus a vented or ported enclosure. A speaker will generally be rated to work best in a sealed box or a vented box and what size in cubic feet. Some speakers are ok to use in what is called "infinite baffle" applications. This means that as long as there is a barrier that keeps the front wave from meeting the back wave, the size of the enclosure on the back does not matter...Then finally there is a bandpass encloure where the speaker is mounted completely inside of the enclosure with the front part vented to a certain size port and the rear of the speaker is vented in a different sized port. These ports allow sound frequencies above AND below the desred frequencies to cancel out and allow a certain "band" of frequencies "pass" thru....
Now in a vented or ported enclosure the vent is made to a specific amount of cubic space that affects certain frequencies. If the frequencies above a desired frequency are allowed to escape thru the port and meet the front wave of the same frequency, they will cancel each other out and that will strengthen the overall sound of the DESIRED frequencies. It also allows less resistance on the speaker so that it takes less power in wattage to give a certain decibel output. Sealed subwoofer enclosures generally require more power (wattage) to put out the same decibel output versus a vented or ported enclosure. A speaker will generally be rated to work best in a sealed box or a vented box and what size in cubic feet. Some speakers are ok to use in what is called "infinite baffle" applications. This means that as long as there is a barrier that keeps the front wave from meeting the back wave, the size of the enclosure on the back does not matter...Then finally there is a bandpass encloure where the speaker is mounted completely inside of the enclosure with the front part vented to a certain size port and the rear of the speaker is vented in a different sized port. These ports allow sound frequencies above AND below the desred frequencies to cancel out and allow a certain "band" of frequencies "pass" thru
....
Road Warrior
Joined: Jul 2013
Posts: 1,624
Likes: 13
From: Fort Worth
When you put fiber fill in a speaker enclosure there is a specific reason for it. This is mainly used for woofers. When a woofer is in an enclosure (usually a sealed enclosure) it pumps outward on the signal and back inward on the opposite phase of the signal. basically the same frequency but outward in phase and inward out of phase. All speakers work this way. Now. When a woofer is mounted in an enclosure it depends on the volume of air inside the enclosure to help control the cone movement. The reason a speaker is in an enclosure is so that the sound wave made by the back of the cone (out of phase) does not meet the sound wave in front of the cone. if the two waves meet they will cancel each other out and pretty much no sound will be heard. Low frequency is more prone to this than high frequency just because of the speed of the sound wave and the room needed to let the wave develop. So what fiber fill (stuffing) does is it slows down the wave behind the cone so that the cone reacts as if it is in a larger enclosure than it actually is. If no fill is put in the wave will come off the back and hit the hard wall of the enclosure in a very short amount of time and distance. With fill it moves slower (imagine trying to run in a swimming pool with the water resistance) thru the air inside the enclosure. So really the main reason for fill inside of an enclosure is to control the speaker movement. It usually is specified of how much fill is put inside "loosely" depending on the speaker design and the enclosure size in cubic volume.
Now in a vented or ported enclosure the vent is made to a specific amount of cubic space that affects certain frequencies. If the frequencies above a desired frequency are allowed to escape thru the port and meet the front wave of the same frequency, they will cancel each other out and that will strengthen the overall sound of the DESIRED frequencies. It also allows less resistance on the speaker so that it takes less power in wattage to give a certain decibel output. Sealed subwoofer enclosures generally require more power (wattage) to put out the same decibel output versus a vented or ported enclosure. A speaker will generally be rated to work best in a sealed box or a vented box and what size in cubic feet. Some speakers are ok to use in what is called "infinite baffle" applications. This means that as long as there is a barrier that keeps the front wave from meeting the back wave, the size of the enclosure on the back does not matter...Then finally there is a bandpass encloure where the speaker is mounted completely inside of the enclosure with the front part vented to a certain size port and the rear of the speaker is vented in a different sized port. These ports allow sound frequencies above AND below the desred frequencies to cancel out and allow a certain "band" of frequencies "pass" thru....
Now in a vented or ported enclosure the vent is made to a specific amount of cubic space that affects certain frequencies. If the frequencies above a desired frequency are allowed to escape thru the port and meet the front wave of the same frequency, they will cancel each other out and that will strengthen the overall sound of the DESIRED frequencies. It also allows less resistance on the speaker so that it takes less power in wattage to give a certain decibel output. Sealed subwoofer enclosures generally require more power (wattage) to put out the same decibel output versus a vented or ported enclosure. A speaker will generally be rated to work best in a sealed box or a vented box and what size in cubic feet. Some speakers are ok to use in what is called "infinite baffle" applications. This means that as long as there is a barrier that keeps the front wave from meeting the back wave, the size of the enclosure on the back does not matter...Then finally there is a bandpass encloure where the speaker is mounted completely inside of the enclosure with the front part vented to a certain size port and the rear of the speaker is vented in a different sized port. These ports allow sound frequencies above AND below the desred frequencies to cancel out and allow a certain "band" of frequencies "pass" thru
....My latest set of boxes I made were fiberglass for my Lexus and a couple 10" subs. I used expanding foam to correct for the final volume of airspace I needed for the particular subs.
Here's the entire album: http://s336.photobucket.com/user/bph...0ES350%20Build
Cruiser
Joined: Apr 2013
Posts: 223
Likes: 0
From: Jackson Louisiana
I have read about foam covers that you can put over the speakers under the fairing for richer sound but cannot remember where I saw it.
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Tourer
Joined: Mar 2010
Posts: 274
Likes: 3
From: Portage, IN
Finalshot..Excellent excellent work man...Truly pro and done right. Clean install. I can talk audio for hours...love to learn anything from anyone in the way of audio. Home, car and pro audio....
prezflyr...One of the big issues in automotive and probably motorcycle audio is taming resonances. With a fairing the speaker is mounted to it and as the speaker works it expels energy. When something resonates or vibrates from the speaker sound, it uses energy from the speaker to do that. It is also noisy and it can also blend with the sound to color it or distort it. When you put that foam in there it tries to keep the piece from vibrating. When resonation is stopped or controlled it allows all the energy from the speaker to be put in the air as sound. It will play cleaner and louder. In car audio in pro installs the interior of the car is pulled out and a material called dynamat is installed over all the sheet metal surfaces inside the car and trunk. It is a flexible rubberlike membrane that sticks to the metal and keeps it from resonating. It also helps control road noise and outside noise from entering the car/truck.
prezflyr...One of the big issues in automotive and probably motorcycle audio is taming resonances. With a fairing the speaker is mounted to it and as the speaker works it expels energy. When something resonates or vibrates from the speaker sound, it uses energy from the speaker to do that. It is also noisy and it can also blend with the sound to color it or distort it. When you put that foam in there it tries to keep the piece from vibrating. When resonation is stopped or controlled it allows all the energy from the speaker to be put in the air as sound. It will play cleaner and louder. In car audio in pro installs the interior of the car is pulled out and a material called dynamat is installed over all the sheet metal surfaces inside the car and trunk. It is a flexible rubberlike membrane that sticks to the metal and keeps it from resonating. It also helps control road noise and outside noise from entering the car/truck.
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