psarkissian

What silverhead said. Nexus is not a VDI connection for Variax, the D-10 has that. Use the Variax interface device in the meantime.

Without power, the relay default position is in passive mode, but it still goes through the main board circuitry, which is fixed, and not to be messed with,... before it goes to the output. The filters are fix, and one can't just put some gum-drop polyester capacitors in there without altering the impedance and filter curve. 6.5k or 7.8k is fine. Also, number of windings of the pick-up coils, gauge of the wire, etc,... plays a part in it as well. Too deep for me to go into here, would be an hour lecture on electronics,... don't want to put anyone through that, too much math. Best to stick with what is specified. There is some lee-way, but not much. Doing mods outside the boundaries on a JTV is not for the faint of heart. I've done a number of mods and Frankie Steins,... so I know the pitfalls. Tread carefully. Good luck.

"... magnetic pickups should be between 6K and 8K DCR. ", and "... sound will be thin/weak, and above that, rolled off and dull. ", yes, correct, very much so. "But that is not true for a "regular" guitar", also correct. This being a guitar with active circuitry (require a power source), as a result, is not a 'regular guitar' with passive circuitry. Pick up companies will have a DCR spec for their products. The pick-up signal goes through the main board, then to the the jack plate. What is in between on the main board I cannot discuss (it's a non disclosure agreement (NDA) thing). I have posted on this subject a number of times, here and on the Facebook Variax group page. "Has anyone done any tinkering/testing to see how the circuit actually works? ", yes, many people have swapped out pick-ups and found out for themselves, and didn't like it. There is a difference in how active verses passive and active filters work, and impedance matching two disparate circuits is key tot that. And I've been the guy at Line 6 who has been doing service and repair on these since 2010. Have been dealing with active circuits for guitars since 1975-76 'ish.

"When you say "current" Variax, are you referring to the JTV 59/69/89 guitars? ",... Yes. Yes, Variax guitars can be found on Reverb, eBay, Variax guitar and bass Facebook group pages.

There is no Workbench to edit with for bass guitars. For original Variax, the is Workbench, and for JTV, Standard and Shuriken there is Workbench HD. For updating original Variax with Monkey, download Monkey and the desired Firmware version to you computer's local drive and do the updates from there. You may need a computer with earlier pre 64 OS, that will run 32 bit processing. For PC's, it would be Window 10 or earlier, and for the Mac 10.6.8 OS or earlier. For current Variax, use Line 6 Central app to update with and Workbench HD for patch editing and custom patch creating. There are online manuals in the Line 6 Support page for the guitars and for Workbench and Workbench HD. And check the Downloads page for computer OS compatibility.

Very good.

Don't run Central and Workbench HD at the same time, it confuses the apps as to what they're doing in which app.

Ah, just the charger,... that's problematic, but may work for a time. Sony chargers are quality chargers. The problem would be the CS brand batteries. Better to use the real Line 6 battery and charger, they are better matched to one another. Has to be some out there somewhere, just a matter of finding them. Cheers.

DON'T USE the Sony camcorder batteries. Wrong number of contacts and current draw. Please DON'T USE it. Contact Line 6 Support and see about getting a charger and any leftover battery stock. They might not be made anymore, but there is still some stock out there for now. Just a matter of running it down. https://line6.com/find/service_center/ Closest authorized service center to you is Electronic Music Services in Southend-On-Sea, mouth of the Thames, or Sontec Electronics Ltd in Ipswich. Maybe they can help too.

"Would it be anything to do with the Cameron Sino aftermarket battery,... ", good possibility. I have had problems with those batteries. Use real Line 6 versions.

It should not do that, log a Support ticket.

- Line 6 authorized service center for jack plate and installation. - If you are not using a VDI cable with the Canon shell,... get one, so that the connection is good. Once the pins in the mod jack get bent, replacement is needed.

1) Insert a fully charged battery into battery compartment (four LED's showing briefly). 2) Connect Variax to computer thru VDI-to-USB interface. 3) Connect 1/4" TRS headphone adapter into 1/4" TRS guitar jack. 4) Relay should click and interface shout be showing two green LED's. Variax should show up on Central and Workbench HD. Don't run them together at the same time, they get confused updating Firmware verses Workbench HD functions.

To authorize, try Central's sign in, it should authorize it then.

See Technical Schematics on the Support page,... https://line6.com/support/ Some legacy product schematics are there.