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Posts posted by radiogram

  1. The Bass improvement with K28 over K22 is significant. There is more mid bass warmth and more fullness. Overall I find these awesome. I have had so many "so called" auidiophile speakers but none let me enjoy music like these even when I am in next room. I like this even more than my Cornscala I built 12 years ago.

  2. @Pondoro

    Not much really. The K22 woofers were replaced with K28. The original K53, K77 and Original crossover left alone inside. The K28 woofers directly connected to Binding post which is fed by the bass Section of New Crossover.


    I had originally just placed the new mid and Tweeter Horns on top the cabinet since the Motorboard of H1.5 is not compatible. I liked the sound stage with the raised Mid and Tweeter so I decided to make a top section cabinet.

  3. M-1.thumb.jpg.885c6bcb992f64b393720e04406858cd.jpg




    Drivers: K22, K53 & K77------->K28, K53Ti, K107Ti; CWIII Xover - K53Ti ,K107Ti Level reduced 3dB by RME DAC



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  4. Hello, hope everyone is staying safe and healthy.


    I need to convert my CW3 Crossover network to H3. The CW3 kit was originally bought  to experiment with my cornscala. Couple of years ago  I upgraded my Hersey 1.5 to H3, with CW3 Xover and K28, K53Ti and K107 Tweeters. And for a while I used a Autoformer to lower the mid and tweeter section by 3db. Now instead, I am using a RME DAC's EQ to lower mid and tweeter by 3db. But this only solves digital sources.


    I would instead like to make the network a proper H3 network. I checked with Michael Crites, he does not have the schematics of either.


    If any of you have schematics of CW3 and H3 and since both the H3 and CW3 are no longer in current production, could you share them ? 


    BTW, I am in the process of building a top section cabinet (trapezoid) as I like the higher soundstage with the mid and tweeter on top of the cabinet.


    Thanks & Cheers

  5. I built y cornscalas 3 years ago but did not get around to finish them cosmetically until now. Finally it is all dressed up in Veneer, grill cloths, etc. Here are some pics.

    Once again my sincere Thanks to Bob Crites, James Cullison and Klipsch forum members.

    Cornscala Parts - K77-F, K55- V (Solder Terminals) / K400, Crites CS1526CW Woofer, AL-4 Network.


  6. Here is the measurement of CS1526C (mounted in cabinet) by WT3. I did more than 10 runs at different times and the results were quite consistent without much variation. Re is right on (my Fluke Meter measures 3.8). The WT3 impedence curve pretty much matches with my crude method above with a few minor exceptions at a few frequencies. Also, the min impedence between the double peaks is at 40Hz suggesting tuning to 40Hz.

    Interesting things are as follows:

    1. Le is reported as 1.7mH (do not know at which frequency)

    2. Qts, Qes and Qms are substanially different from free air specs (cabinet loading cause??) which are Qts = 0.2, Qes = 0.27, Qms = 9.93.



  7. After getting the WT3 tester under Windows XP (it does not work under W7), I measured the impedence and T/S parameters of Crites CS1526C Woofer mounted in a Cornscala Bass Cabinet. My Cornscala Bass bin has almost same volume of Cornwall but with different shape. It is rectangular the first 9 inches of depth and then tapers like a trapezoid towards the rear. The port shelf is same dimension and postion as of cornwall. First I will post the impedence I measured earlier with my crude simple method using a known series resistor ans measuring voltage. Here it is.



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