Raul - from personal experience in my room when you have multiple bass drivers, one positioned high near the ceiling and one low - pointed at the listener. The effect of the output from the woofers is that the bass waves cancel each other out. The sound is much smoother, bass notes stop and start quicker. There are no standing waves.
It costs a lot to do this type of speaker design, they are tall and substantial for the top woofer to reach high and for the cabinetry to be able to hold the weight. They are very imposing in the room. If a manufacturer makes this type of speaker they are usually their flagship line. Not many made like this anymore
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Well the job of the subwoofer is to reproduce low frequencies. In most cases, the bottom two octaves, from 20Hz to ....the higher frequency varies for each persons room. Now I believe in all designs (someone correct me if I am wrong in this assumption) the least distortion for any design, will be when the sub is working the least - IMO.
When it is working is triggered by when it has been set to kick on (the frequency), and how loud it has been set to play at when it kicks on. This second part is IMO key (how loud it has been set for), especially if someone is using One subwoofer. let me explain.
If anyone owns one subwoofer and you want to learn how clean it can play - lowest distortion try this experiment with one subwoofer.
Place it a few feet to the left or the right of your listening position. If it used to be on the other side of the room, change the dial on the phase control 180 degrees to start.
Start playing your music; if the sub used to be close to your main speakers on the other side of the room, you will need to turn the db level of the sub down at least 60 - 70%.
Set it up for your music. You will not be able to tell that it is next to you. In fact you can play a game with your audio friends.
Camouflage the sub with a nice cover. Let your friends sit in your chair, start playing music and ask your friends to tell you where the sub is located. They will point to a far corner somewhere. They will be surprised when you tell them it is 3 feet beside them. try it ...
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True Story
Two weeks ago my 22 year old son comes over with his truck. As it pulls into the driveway, I was able to can hear the vehicle thumping with bass from before he entered the driveway. Fed up I told him we are going to try something. For the record this vehicle comes with decent stock stereo (for car stereo ) I think sourced from Alpine and has a nice big cabin (Room). He has added a JL Audio amp/controls under the passenger seat, and two JL Audio Drivers under the back seat in a long custom box. The first thing I noticed was that his stock sub was still on. Why? It was redundant and competing with the JL Audios. We went to the dash and turned off the vehicles stock sub. I then reached down under the passenger seat where the controls were - I turned the frequency the sub kicked in, a little lower and turned the db level from 6 ! ....to 3. I asked him to play some music. He could not believe it. I can now hear the bass he commented. I felt good but it was short lived. Couple days ago he asked if I could show him how to turn it back the way it was, just so he could learn how to do it. I think its one of these things when guys get together that your vehicle needs to be thumping. :^(
It costs a lot to do this type of speaker design, they are tall and substantial for the top woofer to reach high and for the cabinetry to be able to hold the weight. They are very imposing in the room. If a manufacturer makes this type of speaker they are usually their flagship line. Not many made like this anymore
.
Remember subs main/primary premise is not to have deeper bass or " boom boom " but better quality overall system performance with lower distortions!.
Well the job of the subwoofer is to reproduce low frequencies. In most cases, the bottom two octaves, from 20Hz to ....the higher frequency varies for each persons room. Now I believe in all designs (someone correct me if I am wrong in this assumption) the least distortion for any design, will be when the sub is working the least - IMO.
When it is working is triggered by when it has been set to kick on (the frequency), and how loud it has been set to play at when it kicks on. This second part is IMO key (how loud it has been set for), especially if someone is using One subwoofer. let me explain.
If anyone owns one subwoofer and you want to learn how clean it can play - lowest distortion try this experiment with one subwoofer.
Place it a few feet to the left or the right of your listening position. If it used to be on the other side of the room, change the dial on the phase control 180 degrees to start.
Start playing your music; if the sub used to be close to your main speakers on the other side of the room, you will need to turn the db level of the sub down at least 60 - 70%.
Set it up for your music. You will not be able to tell that it is next to you. In fact you can play a game with your audio friends.
Camouflage the sub with a nice cover. Let your friends sit in your chair, start playing music and ask your friends to tell you where the sub is located. They will point to a far corner somewhere. They will be surprised when you tell them it is 3 feet beside them. try it ...
**********
True Story
Two weeks ago my 22 year old son comes over with his truck. As it pulls into the driveway, I was able to can hear the vehicle thumping with bass from before he entered the driveway. Fed up I told him we are going to try something. For the record this vehicle comes with decent stock stereo (for car stereo ) I think sourced from Alpine and has a nice big cabin (Room). He has added a JL Audio amp/controls under the passenger seat, and two JL Audio Drivers under the back seat in a long custom box. The first thing I noticed was that his stock sub was still on. Why? It was redundant and competing with the JL Audios. We went to the dash and turned off the vehicles stock sub. I then reached down under the passenger seat where the controls were - I turned the frequency the sub kicked in, a little lower and turned the db level from 6 ! ....to 3. I asked him to play some music. He could not believe it. I can now hear the bass he commented. I felt good but it was short lived. Couple days ago he asked if I could show him how to turn it back the way it was, just so he could learn how to do it. I think its one of these things when guys get together that your vehicle needs to be thumping. :^(