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1 Forum: Pi Speakers «» Posted on: Fri, 12 August 2016 17:58 «» By: Wayne Parham
Re: 4 Pi and 3 pi subwoofer
Answers by numbers: 1. Will the design be compromised if the port is moved to the rear and the horn is centered above the woofer? Is having the horn off-center actually facilitating this design? It's just not so aesthetically pleasing to me. If you...
2 Forum: Speaker «» Posted on: Wed, 10 August 2016 15:01 «» By: Wayne Parham
Re: Mono "flanking sub"
When we talk about phase anomalies (time domain) or when we talk about peaks and dips in the amplitude response (frequency domain), we're essentially talking about flip sides of the same coin. I've always been more focused on the frequency domain becaus...
3 Forum: Speaker «» Posted on: Wed, 27 July 2016 14:32 «» By: johnnycamp5
Re: Midbass slam
I have not measured my room, in a way that I can look at a graph, but I have run sweeps and hz test tones. I had discovered a huge null at 70hz (throughout the center of the room) and another at around 150hz. I have since added considerable acoustic...
4 Forum: Speaker «» Posted on: Wed, 27 July 2016 09:19 «» By: jonone
Re: Midbass slam
Sub bass frequency' s are many tens of feet long, so 5ft from the speakers shouldnt make any difference. In my opinion I would only use sealed for subs and you need drivers with huge magnets to control the cone, lack of control leads to boom in my experie...
5 Forum: Speaker «» Posted on: Tue, 19 July 2016 06:36 «» By: jonone
Midbass slam
I went to a house party the other day which was outside and they had hired some pa speakers, they weren't huge probably 12" 2 ways and a pair of 15-18" subs. The bass was really powerful, that classic hit you in the chest bass just like only li...
6 Forum: Speaker «» Posted on: Thu, 14 July 2016 13:40 «» By: Wayne Parham
Re: Mono "flanking sub"
I have realized over the last decade or so that it always helps to add bass sound sources, up to about four where we start to see diminishing returns. But even beyond that, there are improvements. I have also learned that placement matters most when th...
7 Forum: Speaker «» Posted on: Wed, 25 May 2016 10:24 «» By: Wayne Parham
Re: Do Speakers Matter Much For This?
Obviously, you need intelligibility. But other than that, if you're only concerned about the vocal range, you don't have to deal with issues that complicate things at low and high frequency. For example, look at the problem of room modes. Those are ha...
8 Forum: Room Acoustics «» Posted on: Mon, 25 April 2016 10:24 «» By: Wayne Parham
Re: Acoustic calculators
I've used CARA, and found it helpful. The main thing I was hoping to do was to model different configurations and see room modes and energy distribution in the modal region. It does a great job of that.
9 Forum: Pi Speakers «» Posted on: Wed, 06 April 2016 14:24 «» By: johnnycamp5
Re: Woofers and models
Thanks Wayne. Your response confirms my thinking. No use getting wrapped up in a 6pi vs. 7pi comparison. I'll likely convert my 4pi's to 7pi's, just have to build the cabinets first. Is it feasable that I could convert my crossovers to 7pi cross...
10 Forum: Pi Speakers «» Posted on: Sun, 03 April 2016 17:51 «» By: Wayne Parham
Re: Woofers and models
You're right about all your thoughts, but really, both six π and seven π cornerhorns sound great driven with 300B SET amps. You'll be please with either one. Constant directivity cornerhorns don't need flanking subs. But you still can't go wrong wit...
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