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Post by stratotarts on Sept 27, 2016 11:38:47 GMT -5
I noticed you measure all pickups with a 200k load. That makes sense with HBs. For single-coil pickups, especially those we would expect to see as replacements in a Strat or Tele, I would think 100~115k would be more appropriate? There was a discussion that led up to the adoption of 200k on strat-talk. JohnDH posted the most succinct explanation: "1.Humbuckers commonly use two x500k pots, which with 1M amp input, equates to 200k 2. Singles, also often see a single 250k pot plus amp input (ie the same as 1), based on bridge positions on Strats, either classic wiring (no B tone), or modern Am Standard with a no-load tone pot. 3. This loaded point, while it needs to be significantly away from the unloaded tests, reveals information about the pickup more sensitively with less load, than if you match with say 2x250k pots plus amp input. With many pickups, if you model them with 2x250k pots plus 1M = 111k, or thereabouts, the resonant peak is largely killed off, making the data much less useful."
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Post by stratotarts on Sept 26, 2016 20:45:08 GMT -5
I finally paid to buy a "pro" or paid copy of RightMark. It has a feature that makes me wish I'd done that sooner. I can save the test results as wav files, and reload them into slots later. This means I can create charts combining fresh and previously measured data, for comparison. It also means that raw test results can be file shared between different people or posted online.
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Post by stratotarts on Sept 26, 2016 17:14:03 GMT -5
Hi, I am the designer of a circuit which provides an effective, extremely low cost method of testing guitar pickups. The project began in 2014 and has undergone many stages of improvement and evolution. You can read about the history of it here: link. I would like to thank Antigua for being the primary beta tester throughout the most recent development stages. The current version incorporates an integrator and a high impedance preamplifier. It is intended to be used with a computer sound interface and audio analysis software. The current version has been implemented in a PCB, which has been designated the V5.5. Here is a photo of a typical test setup: A limited number of PCBs are available at low cost, until they are exhausted. At that point, I will decide whether to publish the Gerber files, or produce more boards. Here is the documentation: Pickup Measurement Procedure
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