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Mouth Area and Cut-Off Frequency [message #21251 is a reply to message #21240]

Sat, 20 August 2005 14:16

Martin
Messages: 220
Registered: May 2009

Master

For your mouth area, and assuming only floor reinforcement, I get a lower cut-off frequency of 172.5 Hz. The only way I can get your 86Hz is if I assume the speaker is flush against a side wall also. My guess is that your Hedlund horn is really acting like a TL below 200 Hz and transitions to a horn above this frequency.

I would also speculate that you are probably getting weak bass and could use a BSC circuit to help tame the rising mid and high frequency response of the DX4 driver, this is probably why you are using a sub woofer to help the low end. With a good BSC circuit design, the sub woofer may not always be needed unless you really want to play bass heavy music.

Martin

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[Message index]

		A little article about a BLH....why go to the trouble..... By: Ed Schilling on Sat, 06 August 2005 20:49
		Horns, transmission lines and reflex cabinets By: Wayne Parham on Sun, 07 August 2005 03:13
		Re: Horns, transmission lines and reflex cabinets By: Ed Schilling on Sun, 07 August 2005 08:21
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Sun, 07 August 2005 08:36
		Re: Horns, transmission lines and reflex cabinets By: Ed Schilling on Sun, 07 August 2005 09:41
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Sun, 07 August 2005 10:08
		Re: Horns, transmission lines and reflex cabinets By: Retsel on Wed, 10 August 2005 13:41
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Thu, 11 August 2005 05:16
		Re: Horns, transmission lines and reflex cabinets By: Retsel on Thu, 11 August 2005 07:15
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Thu, 11 August 2005 07:28
		Re: Horns, transmission lines and reflex cabinets By: hurdy_gurdyman on Thu, 11 August 2005 09:41
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Thu, 11 August 2005 10:05
		Re: Horns, transmission lines and reflex cabinets By: hurdy_gurdyman on Thu, 11 August 2005 10:37
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Thu, 11 August 2005 11:09
		Re: Horns, transmission lines and reflex cabinets By: hurdy_gurdyman on Thu, 11 August 2005 12:56
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Thu, 11 August 2005 17:04
		Re: Horns, transmission lines and reflex cabinets By: Retsel on Tue, 16 August 2005 09:44
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Tue, 16 August 2005 10:00
		Re: Horns, transmission lines and reflex cabinets By: Martin on Tue, 16 August 2005 17:48
		Re: Horns, transmission lines and reflex cabinets By: Retsel on Thu, 18 August 2005 08:08
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Thu, 18 August 2005 08:54
		Re: Horns, transmission lines and reflex cabinets By: Retsel on Thu, 18 August 2005 09:32
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Thu, 18 August 2005 09:39
		Re: Horns, transmission lines and reflex cabinets By: Martin on Thu, 18 August 2005 15:37
		Re: Horns, transmission lines and reflex cabinets By: Retsel on Fri, 19 August 2005 08:05
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Fri, 19 August 2005 09:27
		Re: Horns, transmission lines and reflex cabinets By: Martin on Sat, 20 August 2005 06:22
		Mouth Area and Cut-Off Frequency By: Martin on Sat, 20 August 2005 14:16
		Re: Mouth Area and Cut-Off Frequency By: Retsel on Mon, 22 August 2005 08:31
		Re: Mouth Area and Cut-Off Frequency By: Martin on Thu, 25 August 2005 18:23
		Re: Mouth Area and Cut-Off Frequency By: Retsel on Fri, 26 August 2005 09:17
		Re: Horns, transmission lines and reflex cabinets By: Retsel on Mon, 03 October 2005 10:41
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Mon, 03 October 2005 13:57
		Re: Horns, transmission lines and reflex cabinets By: Retsel on Mon, 03 October 2005 14:41
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Mon, 03 October 2005 15:15
		Re: Horns, transmission lines and reflex cabinets By: Chris K on Thu, 18 August 2005 20:29
		Re: Horns, transmission lines and reflex cabinets By: Wayne Parham on Thu, 18 August 2005 21:14
		Re: Horns, transmission lines and reflex cabinets By: ChrisK on Thu, 18 August 2005 22:17
		Maximum SPL charts By: Wayne Parham on Mon, 12 September 2005 06:02
		Re: A little article about a BLH....why go to the trouble..... By: SingleMinded on Sun, 07 August 2005 09:15
		A W-bin! By: Poindexter on Sun, 07 August 2005 15:53
		Re: A W-bin! By: hurdy_gurdyman on Sun, 07 August 2005 21:04
		Hurt me; hurt me! By: Poindexter on Sun, 07 August 2005 23:31
		Re: Hurt me; hurt me! By: Bob Brines on Mon, 08 August 2005 06:41
		You have mail, Bob. By: Poindexter on Mon, 08 August 2005 09:48

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