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4 pi speakers + 3 pi subwoofers, pics & measurements [message #81352]

Tue, 26 May 2015 13:29

vandevoordekoen
Messages: 18
Registered: January 2013

Chancellor

Hello,

Two years ago I started with the 4pi project thanks to Wayne who helped me a lot with his plans and answering my questions. Smile

Pictures!

1. Building the 4pi speakers

2. Finishing

3. New house, made new tv furniture --> new finishing (birch)

Measurements with ecm8000 mic (listening position): very poor low-end due to room modes and resonances:

I've bought two lab12 subwoofers and made 2 testing enclosures. crossover with mini-DSP (30hz;48db/oct, 120hz;12db/oct):

A very geeky testing setup. My wife loves me when I do this kind of setups. Rolling Eyes

Much better low-end frequency response at listening position!

When I measure full range from the listening position, there is an obvious roloff at the high frequencies. Is this something to worry about? I used the behringer ecm8000 mic, used CAL-file (which makes the roloff even steeper) and the m-audio fast track which is also calibrated by REW.

Thank you in advance!

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[Message index]

		4 pi speakers + 3 pi subwoofers, pics & measurements By: vandevoordekoen on Tue, 26 May 2015 13:29
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: Wayne Parham on Tue, 26 May 2015 13:39
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: vandevoordekoen on Wed, 27 May 2015 08:05
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: Wayne Parham on Wed, 27 May 2015 11:04
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: vandevoordekoen on Wed, 27 May 2015 16:23
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: Wayne Parham on Thu, 28 May 2015 11:19
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: chrisR on Thu, 28 May 2015 11:32
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: vandevoordekoen on Thu, 28 May 2015 12:59
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: Wayne Parham on Thu, 28 May 2015 14:36
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: vandevoordekoen on Sat, 30 May 2015 11:28
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: Wayne Parham on Sun, 31 May 2015 09:48
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: tom-m on Wed, 03 June 2015 18:12
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: Wayne Parham on Thu, 04 June 2015 10:19
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: vandevoordekoen on Thu, 04 June 2015 10:53
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: Wayne Parham on Fri, 05 June 2015 17:37
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: vandevoordekoen on Tue, 26 May 2015 13:47
		Re: 4 pi speakers + 3 pi subwoofers, pics & measurements By: tom-m on Fri, 05 June 2015 22:09

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