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496 Search Results Found |
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Forum: Pi Speakers «»
Posted on: Mon, 16 May 2011 10:09 «»
By: Wayne Parham
Re: So how does this all work then..?
The cabinet is tuned to 38Hz so you can safely boost bass down to that point. However, it would be much better to use multisubs, because then you'll not only gain the extension but also smooth room modes.
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Forum: Pi Speakers «»
Posted on: Mon, 09 May 2011 14:59 «»
By: Wayne Parham
Re: So how does this all work then..?
The biggest difference in the Eminence and AE drivers is in the midrange, actually. It's smoother and distortion is lower because of flux stabilization rings. The bass is good either way, although all my speakers are high-efficiency designs which means...
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Forum: Pi Speakers «»
Posted on: Thu, 05 May 2011 10:46 «»
By: Wayne Parham
Re: Back EMF?
Absolutely. They have shorting rings that provide flux modulation control. The improvement from that feature is huge.
Not sure what you mean. The crossovers are highly optimized and have a nice clean forward lobe. Even the stock build uses gre...
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Forum: Speaker «»
Posted on: Sun, 01 May 2011 21:10 «»
By: Wayne Parham
Re: Sub woofer Assist
Check out the thread called "The Subwoofer Thing" along with all the links contained therein. It's about a configuration that uses multiple bass sound sources at different places in the room to average out room modes. Some call this a multisu...
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Forum: Speaker «»
Posted on: Wed, 27 April 2011 14:18 «»
By: Wayne Parham
Re: Room modes, multisubs and flanking subs
What sets the modal range apart from the reverberant range (also sometimes referred to as the statistical range) is the spacing between peaks and valleys. Up high, the interference is so dense it creates tightly spaced spikes. It looks like "grass...
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Forum: Pi Speakers «»
Posted on: Thu, 14 April 2011 21:47 «»
By: Wayne Parham
Re: In-wall baffle
Flush soffit mouting is a good thing because it eliminates the (baffle step) directivity transion from freespace to halfspace radiation. Anytime there is a directivity change, there is a corresponding change in on-axis response. This assumes power resp...
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Forum: Pi Speakers «»
Posted on: Thu, 14 April 2011 01:31 «»
By: Wayne Parham
Re: 3-Pi Speaker plans
Don't crossover, blend the mains with the subs. Low-pass the subs, but don't high-pass the mains. These speakers won't need the high-pass like you might do in a prosound environment. What you'll gain is better smoothing of room modes.
For more info...
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Forum: Speaker «»
Posted on: Tue, 05 April 2011 15:24 «»
By: Wayne Parham
Room modes, multisubs and flanking subs
When I first considered the multisub approach, it was prompted by papers written by Todd Welti. He did several tests that showed in-room amplitude response could be made smoother using multiple subs, and gave specific guidance about placement. His favo...
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Forum: Pi Speakers «»
Posted on: Thu, 31 March 2011 23:40 «»
By: Wayne Parham
Options in a nutshell
It's all about the midrange, when you're talking differences between the JBL 2226 and the Eminence Omega 15 in the four Pi loudspeaker. The Omega 15 sounds very good, powerful yet still natural sounding. But it isn't as good as the JBL woofer. The 222...
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Forum: Pi Speakers «»
Posted on: Sun, 27 March 2011 23:43 «»
By: Wayne Parham
Upgrades
Upgrades are worth their extra cost. I would upgrade in the following order, as I think these bring the greatest improvements in this order:
1. Woofer
2. Compression driver
3. Coils
4. Capacitors
5. Resistors
The upgraded woofer make a bi...
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