Posted by Martin [ 152.163.100.65 ] on May 25, 2005 at 18:30:43:

In Reply to: Re: Did Martin King do something with those? posted by manualblock on May 25, 2005 at 12:58:25:

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

Replies:

• Re: Did Martin King do something with those? - manualblock 18:59:09 05/25/05 (8)
  • Re: Did Martin King do something with those? - Martin 19:05:01 05/25/05 (7)
    • Re: Did Martin King do something with those? - manualblock 20:47:25 05/25/05 (6)
      • Re: Did Martin King do something with those? - Martin 06:05:27 05/26/05 (5)
        • Re: Did Martin King do something with those? - manualblock 07:15:42 05/26/05 (4)
          • Re: Did Martin King do something with those? - Martin 11:29:57 05/26/05 (3)
            • Re: Did Martin King do something with those? - manualblock 14:45:51 05/26/05 (2)
              • When I talk stereo..... - colinhester 22:18:18 05/26/05 (1)
                • Re: When I talk stereo..... - manualblock 03:29:17 05/27/05 (0)