Speaker Damping For Auto And Studio
Speaker damping is very important when working with speakers for a couple of reasons. The ideal speaker enclosure should allow the speaker to move freely and let the speaker reproduce the sound without any coloration or added vibrations. This is one factor that increases the cost of most speaker boxes and cabinets.
The bigger companies will put a lot of research into materials to reduce the vibration and reduce the cabinet resonance that would color or render a perfectly good speaker useless.
When it comes to speaker dampening there are a couple of uses for the term. One term actually means the dampening of the sound inside the box, catching the resonance, and the other term can be used for foam or other products that are placed underneath a chamber to stop the low bass frequencies and vibrations from transferring to the listening environment. I forgot to mention, the types of foams and things that can be used inside the actual speaker box for speaker damping is called “wadding”.
Adding your own speaker damping is pretty easy to do. You basically remove the front plate also called a grill from your speaker, remove the mounting brackets or screws that hold the speaker and cone in place and you now have access to the speaker box where all the muffling takes place. You can use many products inside this cavity as speaker damping.
There are possibly hundreds of online vendors that offer solutions and sound proofing and sound deadening that can be placed in here. If you are on a budget, you can use soundproofing foam or use some packing peanuts that have been sprayed afterward with a soundproof adhesive.
Bigger box, More material
For the bigger in car or in trunk speaker boxes, you really need to work a bit harder, since you have a couple different variables to work with when thinking about speaker dampening products. You have a lot of heat from the speaker coils going on here, obviously you are going to want to use a flame retardant or flame proof wadding material back here.
The materials should be pretty heavy duty and I recommend using a lot of it, because you do have a severe amount of cabinet resonance in the case itself. Speaker damping materials are going to be a bit more costly when working in a bigger box like this, obviously both because of the sheer amount of material you need and the fact that you have to have a flameproof solution.
Using a speaker box that does not have any dampening material inside isn’t the best idea. You just simply aren’t going to get the quality of sound that you are expecting. You have to remember that when you have standing sound waves inside the speaker enclosure, those sound waves are pressing against the back of the speaker, this causes frequencies to be masked and that dramatically reduces the sound quality. Use speaker damping and you will be happy with the end results.