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142 Search Results Found |
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Forum: Pi Speakers «»
Posted on: Tue, 12 March 2019 14:43 «»
By: Wayne Parham
Re: 3 Pi plans
That sure is a nice looking pair of three π speakers! I like the stands they're on too. They'd be perfect for use with flanking subs.
The way to implement flanking subs is to use the left and right preamp outputs as input signals for the left and ri...
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Forum: Pi Speakers «»
Posted on: Fri, 01 March 2019 10:11 «»
By: Wayne Parham
Re: 3 Pi plans
Flanking subs are really just "helper woofers" except that they are generally tuned to provide deep extension. That way you get both benefits - Blending in the 75Hz to 150Hz range gives SBIR smoothing and extension below that gives more deep b...
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Forum: Pi Speakers «»
Posted on: Thu, 28 February 2019 08:59 «»
By: Wayne Parham
Re: 3 Pi plans
Those look stunning!
To improve the upper midbass and lower midrange, you have two options that come to mind right away:
1. Upgrade the midwoofer to the Definimax 4012HO. It's a drop-in swap, with only a single capacitor change on the crossover. ...
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Forum: Pi Speakers «»
Posted on: Thu, 14 February 2019 10:01 «»
By: Wayne Parham
Re: Questions about H290C horn and 3Pi Subwoofer
The volume displacement of the H290C is 125 cubic inches sans driver. But the internal volume offsets are taken into account already, so don't "grow" the box to account for internal offsets again. More information about the H290C Horn/Wavegui...
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Forum: Pi Speakers «»
Posted on: Fri, 04 January 2019 12:58 «»
By: Wayne Parham
Re: More on subs
Very good experimentation, and useful information. Thanks for the feedback.
I have almost always found that flanking subs are a first priority, and one or two distributed subs are next in priority. But sometimes the priorities switch - Rooms that ha...
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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. ...
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Forum: Pi Speakers «»
Posted on: Tue, 27 November 2018 16:47 «»
By: Wayne Parham
Re: Amp for 4pi speakers
In my experience, 200Hz is about the limit of the flanking sub (helper woofer) approach. But I've blended the woofer with the mid(woofer) to ~250Hz in some loudspeakers and it has worked well.
Some specialized cases, like the constant directivity cor...
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Forum: Speaker «»
Posted on: Tue, 04 September 2018 16:18 «»
By: Wayne Parham
Re: Horn mouth vs. front baffle or "speaker cone"
I definitely understand what you've described. Geddes suggests placing one sub high in the air like that, specifically to deal with modal smoothing in the vertical dimension.
My guess is your troublesome mode is probably in the 60-80Hz range. Partly...
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Forum: Room Acoustics «»
Posted on: Tue, 07 August 2018 08:56 «»
By: Wayne Parham
Re: 3 subs to setup
You could certainly try Geddes original proposed multisub arrangement, which was "one in a corner, one along a side wall and the last one 2/3 the way up to the ceiling along another side wall."
For reference, the link below has information a...
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Forum: Speaker «»
Posted on: Fri, 27 July 2018 08:40 «»
By: Wayne Parham
Re: Two Subwoofers
Outside and inside are very different.
Outside, you want all sources to combine coherently. This means you want sound sources grouped together, and their acoustic centers aligned.
When two subs are placed at each ends of a stage, bass suffers from...
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