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Old 6th November 2013, 06:55 AM   #11
Jason is offline Jason  Australia
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Quote:
Originally Posted by Anima999 View Post
Hi Jason,

I received my kit and have finally stuffed the boards. I was wondering if you could tell me what taps would be compatible with the included spacers as I need to drill the heatsinks please?
Everything we do for heatsinks is M3. So an M3 tap.
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Old 6th November 2013, 09:05 PM   #12
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Thanks very much.
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Old 10th December 2013, 04:59 PM   #13
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Default Amp Input Possiblities

Which types of inputs will drive this amp...
Preamp? Headphone output on MP3 player? CD Player Line Out?
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Old 11th December 2013, 04:47 PM   #14
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A teacher once told me that there are non dumb questions. Of course I never asked her the one above. Since there is no source switching or volume controls, a CD Player Line Out is out. Doing some research I found that "A preamp output normally needs to drive a load of between 10,000 Ohms and 47,000 Ohms..." with headphone outputs driving as low as 30 ohms. Looking at the circuit I see at least a 10K ohm load so I think it's safe to assume that to drive this amp I need to use a preamp.
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Old 11th December 2013, 06:43 PM   #15
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It's called learning. You've made an effort, so that's great.

Modern sources should drive this amp just fine without need for the gain found in most preamps. You just need to add a volume control (As simple as a potentiometer) and a source selector if desired. A B1 is a nice follow on project. It will buffer the source from your volume control (or volume control from amp)

If your CD player has adjustable line out levels you can use it directly.

Last edited by BobEllis; 11th December 2013 at 06:57 PM.
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Old 1st January 2014, 06:58 PM   #16
docrob is offline docrob  United States
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Default New questions

What version of Nelson's amps is the the Amp Camp Build Kit?

What is the best way for me to upgrade the Zen if I start at the beginning with the original Zen Amp....Breadboards?

What is the best of the sounding of all the Nelson amps?
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Old 2nd January 2014, 01:25 AM   #17
docrob is offline docrob  United States
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Default Amp Camp version and other questions

What is the version of the Zen Amp in the Amp Camp kit?

What is the best way to build and upgrade most of the Zen versions--breadboard or modifying the PC board? How do you guys do it?
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Old 3rd January 2014, 06:18 PM   #18
docrob is offline docrob  United States
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What is the best way to experiment with the different Zen Amp versions? Breadboarding or PC boards?

What version of all the Zen Amps is the Amp Camp?

All help appreciated.
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Old 15th January 2014, 11:12 PM   #19
mbain is offline mbain  United States
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Bobellis,
What is a B1?

Mark
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Old 16th January 2014, 02:13 PM   #20
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The B-1 buffer, a Pass project. There are other variants, with names like DCB1, but the original is https://www.passdiy.com/pdf/B1%20Buffer%20Preamp.pdf
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