LXH2 Fender simulator

[Yazoo]

I've built the LXH2 Fender simulator and cab. It does work but I'm not getting the awesome sounds I've heard on Krille's site and on the Frank'n'Tone site. I keep coming back to it and tweaking. I'm wondering whether I need to reduce the number of 1N34As.

Has anybody got any guide voltages you could make available for the opamps in the pre amp section so that I can compare what I'm getting with what occurs on a fully working rig? I'd be very grateful for any help.

Thanks in advance.

[Yazoo]

I've been fiddling about with the LHX2 simulator for the best part of 9 months, but I have now got it working to my satisfaction. I eventually isolated the problems I was getting to the LEDs and 5.1V Zener diodes which I had socketed on the circuit board, rather than soldering them in. I used Frank's Fender mods, involvind a pair of LEDs. I had socketed them so it would be easier to experiment with them and change types. However, after using the amp for 10 minutes or so the sound would become really distorted and unusable. I have now soldered both the LEDs and the Diodes in place, and every thing is working (I'm crossing my fingers here!).

I also put an effects loop in between the preamp output and the cab input, using a stereo socket and a y cable to connect up the reverb unit. This is also working well.

Now that it is working, I can definitely say it was worth the effort and thanks again to Frank for so generously sharing his efforts, and also of course to the genius behind this project.

[km-r]

cool dude!
im currently in the process of building the LXH2 MARSHALL version...
now im ready for the possibility that i may encounter problems lke yours.

do you say that, after 10 mins of playing the preamp sounds differently???

[Yazoo]

The sound changed and became very distorted and unusable before I soldered the LEDs and Zener Diodes in place.

Now that the parts are soldered in, rather than just socketed, everything is stable and the sound doesn't change.

Good luck with the Marshall version. Krille's build sounds really good.

[krille2]

Hi friends!

One really has to pay attention to details on these projects 
Though, my impression still is that it was worth every invested moment building it.

Glad u like the clips!