I always enjoy these lessons. This is a great idea if you're installing in a wooden house. All houses here are brick with cement floors and risers. Would it be more advantageous to build the riser from wood and have another resonating component or stick with the cement riser floor and put the low end absorption at the back of the room. I also find the chairs cause the most low end resonance. Is a porous backing for the rear of the seat going to help with this in place of the leather or is just making the entire home theatre chair from porous cloth the only solution?
Chairs do not produce low-frequency resonances. Chairs are for body support with closed cell foam in the cushions that does nothing for even middle and high frequency absorption. You must locate low-frequency absorption in the room positions that require it. You can not place it where you have space for it. It must be placed where the pressure issues occur within the room.
If the 2 most effective places are at the source and receiver (which make sense), would a logical guitar amplifier micing technique be setting the amplifier over a unit AND placing one under the microphone?
With microphones, it's all about reducing the pressure the microphone diaphragm is exposed to. Less pressure (to a point) means gretaer resolution. Drummers are able to get tone using our ACDA series of units by moving them back and forth closer and farther from the microphone position.
You are correct. Diaphragmatic absorption is a pressure based technology. It works on sound pressure waves not air flow or molecular velocity like middle and high frequency rays.
The best place to use low frequency management technology is close to source or receiver. The seat riser is as close to the receiver as you can get. An added benefit is that we usually have the 10" of space required to implement our carbon diaphragmatic absorber within a seat riser.
I always enjoy these lessons.
This is a great idea if you're installing in a wooden house. All houses here are brick with cement floors and risers. Would it be more advantageous to build the riser from wood and have another resonating component or stick with the cement riser floor and put the low end absorption at the back of the room.
I also find the chairs cause the most low end resonance. Is a porous backing for the rear of the seat going to help with this in place of the leather or is just making the entire home theatre chair from porous cloth the only solution?
Chairs do not produce low-frequency resonances. Chairs are for body support with closed cell foam in the cushions that does nothing for even middle and high frequency absorption. You must locate low-frequency absorption in the room positions that require it. You can not place it where you have space for it. It must be placed where the pressure issues occur within the room.
If the 2 most effective places are at the source and receiver (which make sense), would a logical guitar amplifier micing technique be setting the amplifier over a unit AND placing one under the microphone?
With microphones, it's all about reducing the pressure the microphone diaphragm is exposed to. Less pressure (to a point) means gretaer resolution. Drummers are able to get tone using our ACDA series of units by moving them back and forth closer and farther from the microphone position.
@@AcousticFields Do you mean the distance behind the microphone?
Thanks Dennis. How best to vent into the riser space to couple with the absorption?
The carbon technology is diaphragmatic absorption, so they are sealed units. Venting them is a bad thing.
You are correct. Diaphragmatic absorption is a pressure based technology. It works on sound pressure waves not air flow or molecular velocity like middle and high frequency rays.
👌👍
The best place to use low frequency management technology is close to source or receiver. The seat riser is as close to the receiver as you can get. An added benefit is that we usually have the 10" of space required to implement our carbon diaphragmatic absorber within a seat riser.