Great Stuff Dennis. While I dont claim to be an expert, I did study acoustics at Uni and worked in recording studios quite a while. This is the best UA-cam video on Audio stuff I have seen in AGES. You talk directly, and clearly, while not dumbing down anything. You make the important points, and underline them with good descriptions. Please dont change a thing Cheers O.
Whats the ideal placement for subs in a room. I have 6 at the moment. Four up front and two in the rear. My room is about 30 feet long and 24 feet wide with 8' ceilings. I am still lacking low end. What are ideal placement positions for subwoofers?
JJ Dente Sorry for the delay in responding. I will make sure I answer this in the next hangout and send you the link to your specific question and answer. Thanks Dennis
Hi JJ Dente I answered this question as well in this week's Google Hangout. You can see your answer here: ua-cam.com/video/3ps5Tm5CYP0/v-deo.html If you fill in this form on my site I can take a closer look at your situation. If you can include photos then that would be great: www.acousticfields.com/free-acoustic-treatment-room-analysis-tell-us-about-your-room/ Thanks Dennis
Time to look for a new room. Best advice ever.. my ceiling height is a problem. Fiberglass I use on my walls is the stuff they put under glass in buildings. I only have one subwoofer currently and don't feel the need but I have in the past set up 3 spaced 1 meter apart and with the phase rotated 60 is degrees on each and the LP filter lower as they are further away. It sends out of phase sounds everywhere but forward. Great videos by the way. Try an end fire. The most directional woofer in line with the mains.. you do need 3 meters of space to work with... Larger room.. I used 8" cheapo Energy and Mirage when I tried and a paradigm 12" with 180 rotary and switch. You will be surprised. Well maybe not..
D, Sub quantity, driver diameter, room position, and a room with sufficient volume are all great starts. However, if the room low frequency modal issues are treated correctly with the appropriate technologies and amplitudes are lowered with the first three variables, you can achieve similar attack and decay rates with frequencies below 100 Hz. as you can above 100 cycles. Their is no greater sound to me than a 40 Hz. wave that sounds as tight and clean as an 80 Hz. wave and its cousin the 120 Hz.
By fixing rock wool panels to all the sides of the room , can I manage Low frequency?. material is having absorbing coefficient 0.7 for low freq and 0.9 for mid range
S, No, they are a limp mass material that has no impact on low frequencies. They are also toxic to work with and the particles get into your lungs and never leave. They also over absorb middle range frequencies and drain the life out of music and voice.
Thanks for clear info sir, how do I manage 50 to 1000 Hz, with keeping down below 40 hz in a 25 x 13 room. Any how I do not want to listen boom boom bass below 40/50 HZ
S, Broadband diaphragmatic absorption is your treatment type. You can build your own units using our DIY / BDA units. www.acousticfields.com/product/diy-bass-absorber-build-plans-bda-broadband-diaphragmatic-absorber/
Great Stuff Dennis. While I dont claim to be an expert, I did study acoustics at Uni and worked in recording studios quite a while.
This is the best UA-cam video on Audio stuff I have seen in AGES. You talk directly, and clearly, while not dumbing down anything.
You make the important points, and underline them with good descriptions.
Please dont change a thing
Cheers O.
yep, you cant really speak physics in multiple languages, it in itself IS the language. :) I love his tutorials too!
Whats the ideal placement for subs in a room. I have 6 at the moment. Four up front and two in the rear. My room is about 30 feet long and 24 feet wide with 8' ceilings. I am still lacking low end.
What are ideal placement positions for subwoofers?
JJ Dente Sorry for the delay in responding. I will make sure I answer this in the next hangout and send you the link to your specific question and answer.
Thanks
Dennis
Hi JJ Dente
I answered this question as well in this week's Google Hangout. You can see your answer here:
ua-cam.com/video/3ps5Tm5CYP0/v-deo.html
If you fill in this form on my site I can take a closer look at your situation. If you can include photos then that would be great:
www.acousticfields.com/free-acoustic-treatment-room-analysis-tell-us-about-your-room/
Thanks
Dennis
Mmmm ... Eeeww
Yet another top notch video from the professor! Thanks D
J, Thank you for our support.
Time to look for a new room. Best advice ever.. my ceiling height is a problem. Fiberglass I use on my walls is the stuff they put under glass in buildings. I only have one subwoofer currently and don't feel the need but I have in the past set up 3 spaced 1 meter apart and with the phase rotated 60 is degrees on each and the LP filter lower as they are further away. It sends out of phase sounds everywhere but forward. Great videos by the way. Try an end fire. The most directional woofer in line with the mains.. you do need 3 meters of space to work with... Larger room.. I used 8" cheapo Energy and Mirage when I tried and a paradigm 12" with 180 rotary and switch. You will be surprised. Well maybe not..
D, Sub quantity, driver diameter, room position, and a room with sufficient volume are all great starts. However, if the room low frequency modal issues are treated correctly with the appropriate technologies and amplitudes are lowered with the first three variables, you can achieve similar attack and decay rates with frequencies below 100 Hz. as you can above 100 cycles. Their is no greater sound to me than a 40 Hz. wave that sounds as tight and clean as an 80 Hz. wave and its cousin the 120 Hz.
Great videos. Fantastic suggestions! Thank you.
By fixing rock wool panels to all the sides of the room , can I manage Low frequency?. material is having absorbing coefficient 0.7 for low freq and 0.9 for mid range
S, No, they are a limp mass material that has no impact on low frequencies. They are also toxic to work with and the particles get into your lungs and never leave. They also over absorb middle range frequencies and drain the life out of music and voice.
Thanks for clear info sir, how do I manage 50 to 1000 Hz, with keeping down below 40 hz in a 25 x 13 room. Any how I do not want to listen boom boom bass below 40/50 HZ
S, Broadband diaphragmatic absorption is your treatment type. You can build your own units using our DIY / BDA units. www.acousticfields.com/product/diy-bass-absorber-build-plans-bda-broadband-diaphragmatic-absorber/
Great video
N, Thank you. We all appreciate your support.
How in the heck do I connect dual passive subs to my home theater?. Can't fig out this out at all.
R, What do you mean by connect?
you can get a splitter ...two into one connection
Speed of sub is an important topic for sure.
Bring up lots of problems with no understandable solution.
R, What is your specific question?