Currently Being ModeratedSep 22, 2010 5:43 AM (in response to l6podman)Re: Variax 300 changing sounds
You found the problem... the metal "coffin" needs to be shielded. With changes in humidity, temperature, there would be times the circuit board grounds against the coffin. Tape is a good solution, but with temperature and age it will deteriorate. The best thing to do is pull the coffin, paint it with non-conductive paint, and replace. I have the same problem with my 600 (same guts) but am too lazy (and scared) to tear it all apart. You shouldn't have another problem with it unless a piezo fails.
Currently Being ModeratedSep 22, 2010 7:04 AM (in response to es336td)Re: Variax 300 changing sounds
If I ever build my Variax/Tele, I'll shield the entire cavity and lose the coffin. There are 2 "transistors" looking cans that are extremely close to the metal shield. If they're like typical transistors, the casing is the "collector" and really shouldn't come in contact with the grounding shield. Sometimes circuit ground is not the same as earth ground.
I'll either paint the cavity with conductive paint, or use Copper tape, and solder all the seams. A technique I used on Strats and Teles Before EMG and humbucking single coil type pickups.
Too bad I'm not in a Beatle band anymore. I found a great Vox 100 amp model for my pod here. The Ricks and Gretsch models sound great. and all without the HUM!!!!
Currently Being ModeratedSep 29, 2010 7:57 AM (in response to l6podman)Re: Variax 300 changing sounds
Just an update.
Using Variax exclusively. No Problems
Did a gig without the XPS. Just ran on batteries. Next day I checked the batteries, doing the old tongue-to-battery connector test. barely a tingle. The suckers were dead. My wireless pack would have shut down if its batteries were that low.
In the past I was changing batteries every gig, thinking low voltage was one of the reasons for the sounds changing.
Just an FYI.
I use an M13 stompbox modeler, and noticed that the effect sound is completely different when I switch from a "regular" guitar to the variax. Basically, a modeled output signal drives input stages differently than non-modeled guitars.
I copied my main scene and created a new "scene" on the M13, and tweaked all effects. Have to do this at gig volume, so I'm limited to when (and how long) I can do this.
If you switch between modeled and non-modeled guitar, I highly recommend taking the time to "re-adjust" your effects.
On small gigs I use a standard pedal board - Dyna-Comp, Tube Overdrive, DOD mini chorus, DD3 echo...... Obviously you can't create 2 different scenes, but I used "Stick-on arrows" (from a label maker) and marked the settings for the variax on the Dyna-comp and Tube overdrive. The chorus and echo responded about the same with either guitar. The chorus just jumps out more when I use the variax.