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73 Search Results Found |
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Forum: Speaker «»
Posted on: Thu, 24 September 2009 09:58 «»
By: selahaudio
Re: Bose Line Array
See http://www.xlrtechs.com/dbkeele.com/papers.htm and scroll down to the CBT papers
JBL's design operates with a passive crossover so all you need to do is bi-amp with adding your own subwoofer. I would guess that they use resistors to taper the ou...
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Forum: Pi Speakers «»
Posted on: Fri, 10 July 2009 16:07 «»
By: Wayne Parham
Re: Pi subwoofer kits
Freespace sensitivity is 89dB. If you just use a pair of subs, you'll need about 10dB gain in the amp stage to match the stereo mains. If you use four subs, you won't need as much gain and you'll also get better smoothing from multiple bass sound sourc...
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Forum: Pi Speakers «»
Posted on: Sun, 26 April 2009 17:50 «»
By: Wayne Parham
Re: Questions on the 12 and 3 pi subs
Check your mail - I've sent plans.When using subs for prosound, use baltic birch. It's much more durable and it's lighter than MDF too.You decision about whether to use one 12π hornsub or a small group (say four) of the three π subs should be entirely di...
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Forum: Pi Speakers «»
Posted on: Wed, 03 December 2008 18:14 «»
By: Wayne Parham
Re: How many subs are enough?
Outdoors, I would prefer the subs packed close together, ideally within 1/4λ from each other and from the mains. The idea is to create a single sound source so there is no cancellation interference between sound sources. In this case, a single sub would...
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Forum: Pi Speakers «»
Posted on: Thu, 14 August 2008 11:24 «»
By: Wayne Parham
Re: Treatment for a cancellation notch - Multiple subs
The best thing to do is to add subs. I think you and I discussed this before, but just to be sure I'll hit the high points. The idea of adding subs isn't just to augment the low end but also to smooth room modes. Having just two subs added to the two b...
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Forum: LSAF «»
Posted on: Fri, 09 May 2008 12:19 «»
By: Wayne Parham
Re: LSAF 2008 - Show Coverage, Seminar Recordings, Slideshows and Handouts
Don't leave out Skip Pack and Bob Brines. They generally have very good sounding systems. I regret that I didn't get a chance to stop by and listen. Too much to do!About Duke's speakers, I was able to listen briefly and what I heard sounded very good. ...
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Forum: Speaker «»
Posted on: Wed, 12 September 2007 12:24 «»
By: Duke
Re: When is your multiple subwoofer design coming out?
Hi Akhilesh,I ran into a production problem. A mistake was made in manufacturing the boxes, and that has delayed things.My two beta-testers were happy and want sets, and one will be getting his next week. I did sell one completed set to a customer as I ...
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Forum: Speaker «»
Posted on: Wed, 12 September 2007 08:06 «»
By: akhilesh
When is your multiple subwoofer design coming out?
HI Duke,ANy updates on that comng to market?thanks-akhilesh
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Forum: Speaker «»
Posted on: Tue, 04 September 2007 20:09 «»
By: Duke
Re: Multiple subs and reverb?
The subjective effect of multiple subwoofers might be interpreted as faster decay, though that wouldn't really be what's going on.Large bass response peaks typically occuring due to room interactions are interpreted by the ear as "fat" or "slow" bass, and...
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Forum: Speaker «»
Posted on: Thu, 30 August 2007 08:33 «»
By: Wayne Parham
Re: Multiple subs and reverb?
There's a thread about this in the Room Acoustics forum, called "Computer Simulation of Room Acoustics."If the subs are placed within 1/4λ of the mains at the crossover point, then they will sum very well. They'll effectively be the same acoustic source....
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