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Re: Did Martin King do something with those? [message #20937 is a reply to message #20933]

Wed, 25 May 2005 17:30

Martin
Messages: 220
Registered: May 2009

Master

I have ten Radio Shack 1197 (blue and black boxes each marked FE 103) that I have played with a little. I have not built any formal project with them.

I have a back loaded horn design for the Lowthers worked out. I upgraded my advanced MathCad worksheets to account for the real wall reflection and also front or rear firing mouth location. The paper design has a fairly flat SPL down to 40 Hz with an efficiency of 95+ dB, depending on Lowther driver, without any BSC circuit. I am working on the folding scheme now so that it fits in a reasonable enclosure.

Progress on the Lowther designs has slowed some as I look into upgrading my amp and preamp. My old reliable Adcom preamp is not doing well and I am long overdue for an upgrade anyway.

Martin

Quarter Wavelength Loudspeaker Design

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[Message index]

		Did Martin King do something with those? By: Manualblock on Tue, 24 May 2005 14:55
		Re: Did Martin King do something with those? By: Martin on Tue, 24 May 2005 15:35
		Re: Did Martin King do something with those? By: Manualblock on Wed, 25 May 2005 07:14
		Re: Did Martin King do something with those? By: Martin on Wed, 25 May 2005 07:55
		Re: Did Martin King do something with those? By: Manualblock on Wed, 25 May 2005 11:58
		Re: Did Martin King do something with those? By: Martin on Wed, 25 May 2005 17:30
		Re: Did Martin King do something with those? By: Manualblock on Wed, 25 May 2005 17:59
		Re: Did Martin King do something with those? By: Martin on Wed, 25 May 2005 18:05
		Re: Did Martin King do something with those? By: Manualblock on Wed, 25 May 2005 19:47
		Re: Did Martin King do something with those? By: Martin on Thu, 26 May 2005 05:05
		Re: Did Martin King do something with those? By: Manualblock on Thu, 26 May 2005 06:15
		Re: Did Martin King do something with those? By: Martin on Thu, 26 May 2005 10:29
		Re: Did Martin King do something with those? By: Manualblock on Thu, 26 May 2005 13:45
		When I talk stereo..... By: colinhester on Thu, 26 May 2005 21:18
		Re: When I talk stereo..... By: Manualblock on Fri, 27 May 2005 02:29

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