The Eagle has landed, new tt ps kit has finally arrived!
207.119.229.245 |
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| Posted on May 8, 2014 at 14:08:43 | |
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Posts: 612
Location: Midwest Joined: November 26, 2002 |
 Just got Kevin's new turntable power supply kit up and running and I have to say up front that if you have a Nott. tt or any other that uses a 115V AC motor and are not using a tt ps like this you are NOT getting the full potential out of it. What does it do? Think of it as a stereo power supply. An AC motor with two field coils needs the current supplied to one coil to be 90 degrees out of phase with the other. This is usually done with a capacitor connected in series with it. With this power supply, each field coil has its own power supply, with one shifted the needed 90 degrees. Unlike the capacitor, this arrangement allows for trimming the phase angle with a knob on the front panel so that optimum operation of the motor (think smooth) is possible. Even more important for the sonics is the level control which allows the output voltage to be adjusted. When the motor runs, it inputs energy to the spinning platter in pulses. This results in a small amount of frequency modulation. Frequency modulation can be seen as a form of analog jitter. As with digital jitter a little goes a long way. By reducing the output voltage to the point where the energy input from the motor balances the mechanical losses in the system (with my tt this was 60Vrms @33 1/3 and 110Vrms @45rpm), one can reap the rewards of a much more transparent sound stage. How much? I recently rebuilt my line stage (see post). This included replacing the Alps pot with a custom stepped attenuator and PS improvements. I got a nice jump in resolution and transparency from these changes. This new tt ps brought as big of change or greater than that. This is not one of those changes that you have to strain to hear. This is more of the 'holy shit' variety. I had an audiophile buddy over to listen the other night and he was pretty blown over by how much of a difference this makes. In trying to explain the changes, one can expect cleaner transients, a more organic overall sound, a more 3D sound stage and better separation of voices. When a vocalist adds overdubs each is heard clearly. Massed strings sound like individual instruments playing together. I'm really having a lot of fun playing all my favorite records and hearing new things. This new kit is great. If your tt has an AC motor you need to buy one. "It is better to remain silent and thought a fool, then speak and remove all doubt." A. Lincoln
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| RE: The Eagle has landed, new tt ps kit has finally arrived!, posted on August 2, 2014 at 05:44:20 | |
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Posts: 215
Joined: July 30, 2014 |
JKT- What about you? Can you provide anymore information?
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| RE: Is this available?, posted on July 30, 2014 at 07:28:19 | |
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Posts: 215
Joined: July 30, 2014 |
Pretty cool. When will it be available and do you have any specs you can release?
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| RE: Is this available?, posted on July 30, 2014 at 08:18:18 | |
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Posts: 2984
Location: NC Joined: April 19, 2001 |
What specs do you need to see? Kevin Carter K&K Audio www.kandkaudio.com
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| RE: Is this available?, posted on July 30, 2014 at 10:58:09 | |
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Posts: 215
Joined: July 30, 2014 |
Got it. No go on the Gerrard. The VPI is an AC synch motor.
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| RE: Is this available?, posted on May 27, 2014 at 10:38:33 | |
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Posts: 2984
Location: NC Joined: April 19, 2001 |
That will work. Kevin Carter K&K Audio www.kandkaudio.com
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| RE: Is this available?, posted on November 9, 2016 at 06:44:11 | |
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Posts: 5
Location: Texas Joined: August 31, 2006 |
Ed, did you build that webpage or start a new forum topic?
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| RE: Is this available?, posted on August 10, 2017 at 05:20:01 | |
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Posts: 2595
Joined: November 3, 2000 |
Not yet, but soon hopefully!
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