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1 Forum: Room Acoustics «» Posted on: Thu, 20 December 2018 09:36 «» By: Wayne Parham
Re: Sound in basement
Yes, the hard surfaces will cause problems - Room modes will be very strong. So at any position in the room, certain bass notes will be very strong and others will be very weak. The tonal balance will change in different places in the room - What's wea...
2 Forum: Pi Speakers «» Posted on: Mon, 03 December 2018 17:29 «» By: Wayne Parham
Re: Amp for 4pi speakers
I would describe 100-300Hz as midrange. The fundamentals of human vocals are there; Middle C on the piano is in this range. So it isn't bass at all - It's midrange. And, yes, I think having the speakers on stands will modify the sound in this range. ...
3 Forum: Pi Speakers «» Posted on: Fri, 30 November 2018 09:40 «» By: Wayne Parham
Re: Amp for 4pi speakers
The flanking subs did exactly what I would have expected, which was to reduce 15dB ripple in the 100-200Hz region to 6dB ripple. That's a "textbook case" of what to expect. Flanking subs can smooth the range a little lower than 100Hz - usua...
4 Forum: Pi Speakers «» Posted on: Tue, 27 November 2018 12:21 «» By: Wayne Parham
Re: Amp for 4pi speakers
It looks like you've done a very good job already, and I have no doubt you'll tweak your system further to make it even better still. Congratulations! You're "working with what you've got," which is what 90% of us have to do. High-qualit...
5 Forum: Pi Speakers «» Posted on: Tue, 27 November 2018 03:34 «» By: vandevoordekoen
Amp for 4pi speakers
Hello Thanks to Wayne, I've built a set of 4pi speakers a few years ago. However, the room acoustics of our living room are far from ideal. We have an L-shaped room and this is the best aesthetic speaker setup: The 4pi speakers aren't toed-in, ...
6 Forum: Room Acoustics «» Posted on: Tue, 09 October 2018 17:13 «» By: Wayne Parham
Re: The size of the room
You might do a search here for "small rooms" and "room modes."
7 Forum: Room Acoustics «» Posted on: Wed, 03 October 2018 13:03 «» By: Wayne Parham
Re: The shape of the room
The ideal room is outdoors, because there are no walls or ceiling to act as reflectors. Obviously, that's not an option so next best thing would be a very large, well-damped room having randomly contoured walls with no large flat surfaces. That's proba...
8 Forum: Room Acoustics «» Posted on: Mon, 01 October 2018 12:44 «» By: Wayne Parham
Re: The shape of the room
Square rooms aren't good because room modes are strong. You would definitely benefit from multisubs - in any small room actually - but even more so if the room is square.
9 Forum: Pi Speakers «» Posted on: Sun, 30 September 2018 21:42 «» By: Wayne Parham
Re: Sound for small gym
Room modes are less a problem in large rooms. The bigger problem in gymnasiums is the hard, reflective surfaces on all sides. It makes a midrange reflection problem, and a lot of echo. The directivity of the speakers will help, and that's sometimes as...
10 Forum: Pi Speakers «» Posted on: Sat, 29 September 2018 13:20 «» By: ggnarley
Sound for small gym
I am providing the sound system for a fall festival/dance we are having in our school gym. The gym is fairly small and there is only about 5 feet of space beyond basketball court to the block walls. Will be setting up in the narrower side under the baske...
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