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Re: 4 pi speakers + 3 pi subwoofers, pics & measurements [message #81366 is a reply to message #81364]

Sat, 30 May 2015 11:28

vandevoordekoen
Messages: 18
Registered: January 2013

Chancellor

Hello Wayne,

Both compression drivers are B&C DE250 drivers with H290C horns bought on the 4PI-webshop. Both drivers show the same unusual roll-off.

According to your previous post, I understand that the DE250/H290C combination doesn't need extra CD compensation (with an extra C1) because the crossover-design on its own already compensates enough for this CD/horn combination?

This is a picture of the crossover:

1. No C1 is installed

2. An extra resistor (over the tweeter) is installed (to reduce the possible peak at 1.6khz with the H290C horn).

3. R3 (the Zobel) isn't a large silver block (as seen often in the 4pi crossover pictures), but two 15ohm/50W resistors connected parallel.

Nothing of this should cause problems, should it? Or do I overlook something?

Maybe it is an incredible coincidence that both mics show the same roll-off?

Thanks 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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