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Old 30th June 2012, 11:42 AM   #51
bcmbob is offline bcmbob  United States
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SoIl4x4, the second link on the last post is incorrect. This one gives a better view of the combination.
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Old 30th June 2012, 03:43 PM   #52
SoIL4x4 is offline SoIL4x4  United States
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Thanks Bob I seem to remember reading that a while back. I will have to go back and read more. Now housing the LN and JC2 in one unit is on my mind. If I did that though I would like the ability to use the LN without the JC2. A simple switching network will be in order.

Just when I think I have a project figured out I have to go and complicate things!
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Old 30th June 2012, 05:38 PM   #53
bcmbob is offline bcmbob  United States
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You'r not alone. I'm considering complicating things even further by adding the DAC in the same chassis. If I don't build the FEs in a fully integrated design (like the MyRef V1.3s in that thread), it would be great to keep all the wires between Dac, LN and JC-2 internal and as short as possible. Probably won't make that decision till after the FEs and the JC-2 are optimized. A little voice in my head keeps whispering "....Mono-blocks.... Mono-blocks" for the FEs. Time will tell.
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Last edited by bcmbob; 30th June 2012 at 05:41 PM.
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Old 1st July 2012, 04:06 PM   #54
bcmbob is offline bcmbob  United States
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I put the Alps pot gizmo on the FE thread.
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Old 5th July 2012, 02:48 PM   #55
squalor is offline squalor  United States
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Quote:
Originally Posted by bcmbob View Post
I put the Alps pot gizmo on the FE thread.
... and I do appreciate that pin-out information. I listened to your "Test Mix" last night. The bass player on the first track is as fast as Jaco. The snipet of the last song was tasty.

To those thinking of using the lighter note or LDR in a enclosure with other devices, remember to place the LDR in the coolest (most vented) part of the chassis.
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Old 5th July 2012, 03:15 PM   #56
bcmbob is offline bcmbob  United States
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Yea, the bass also goes quite deep on some notes. I'm a big Jaco Pastorius fan.

So you did get the Lighter Note built and running? Can you report on your impressions of the sound quality?
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Old 5th July 2012, 03:47 PM   #57
squalor is offline squalor  United States
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I have only the basic LDR. I did build it, taking care not to overheat the diodes. Sadly, I have not tested it. I could not get a steady 5V from my regireg so I bought the parts for another one.
I must seem unmotivated but I've been so busy with other things. Yard work, car repair and my job, to name a few.
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Old 5th July 2012, 03:51 PM   #58
bcmbob is offline bcmbob  United States
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Understood. Remember you can use a 5V wall wart as a supply for testing till you get the regireg to your liking.
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Old 8th September 2012, 03:57 PM   #59
bcmbob is offline bcmbob  United States
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HUM - MMMM!

Before I could get to expanding this thread to include interconnects and speaker cabling, I ran up against a different problem. Pleas take a look at the diagrams and tell me what I am not seeing.
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File Type: jpg Gnd Prob.jpg (64.5 KB, 237 views)
File Type: jpg Gnd Prob 2.jpg (46.9 KB, 232 views)
File Type: jpg Gnd Prob 3.jpg (73.4 KB, 226 views)
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Old 8th September 2012, 04:22 PM   #60
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Bob,

Could you add the power supply paths to your diagrams, both hot and neutral (ground if applicable)? Also, use your ohm meter to show signal ground to neutral/ground continuity for each connection. Finally, do you have your dac, pre, and FE's all plugged into the same power plug strip or wall outlet? Sometimes separate power sources can have enough impedance between them to cause problems.

What you should be looking for is multiple paths to ground. I suspect the reason that the walkman as a source doesn't hum is because it is battery powered and isolated from ground. It is likely that you have a ground loop picking up hum between the dac and pre, but that is only a guess.

That said, I am not a expert in this. I won't be offended at all if someone with greater experience jumps in here.

Jac
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