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<blockquote data-quote="keep_hope_alive" data-source="post: 7451823" data-attributes="member: 576029">rubber feet won&#039;t have any benefit below the resonant frequency of the material - which is quite high.&nbsp; as such, rubber won&#039;t make any difference at low frequencies.&nbsp; in order to have vibration isolation at low frequencies, you need springs with a specfic k-factor sized for the load.&nbsp; rubber feet help with higher frequency vibrations, but it depends on the elastomeric properties of the rubber.reasons to not mount amps to sub boxes do not include vibration concerns.1.&nbsp; theft.&nbsp; it&#039;s easier to steal everything when it&#039;s bolted to a box.2.&nbsp; flexibility.&nbsp; you can&#039;t remove the sub box easily, you can&#039;t access the spare easily, you can&#039;t experiement with other sub boxes easily.3.&nbsp; physical damage.&nbsp; i commonly see damage as a result of physical stress on connections when the amp/box moves or shifts. This physical stress causes shorts and electrical/physical damage to the amp.When mounting amps to a box, the box should be firmly bolted to the vehicle so it cannot move, even during hard braking or acceleration.I never mount amps to boxes because I like my customers to have flexibility.&nbsp; I recognize that the box takes up space, and that space is sometimes needed.&nbsp; Removing a sub box is a 30 second effort.&nbsp; Access to the spare tire, ability to haul stuff, etc. are good reasons to be able to easily remove the sub box.&nbsp; I also like to experiment.&nbsp; Being able to test another sub enclosure is easier when the amp is mounted separately.</blockquote>

[QUOTE="keep_hope_alive, post: 7451823, member: 576029"] rubber feet won't have any benefit below the resonant frequency of the material - which is quite high. as such, rubber won't make any difference at low frequencies. in order to have vibration isolation at low frequencies, you need springs with a specfic k-factor sized for the load. rubber feet help with higher frequency vibrations, but it depends on the elastomeric properties of the rubber. reasons to not mount amps to sub boxes do not include vibration concerns. 1. theft. it's easier to steal everything when it's bolted to a box. 2. flexibility. you can't remove the sub box easily, you can't access the spare easily, you can't experiement with other sub boxes easily. 3. physical damage. i commonly see damage as a result of physical stress on connections when the amp/box moves or shifts. This physical stress causes shorts and electrical/physical damage to the amp. When mounting amps to a box, the box should be firmly bolted to the vehicle so it cannot move, even during hard braking or acceleration. I never mount amps to boxes because I like my customers to have flexibility. I recognize that the box takes up space, and that space is sometimes needed. Removing a sub box is a 30 second effort. Access to the spare tire, ability to haul stuff, etc. are good reasons to be able to easily remove the sub box. I also like to experiment. Being able to test another sub enclosure is easier when the amp is mounted separately. [/QUOTE]

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