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  1. stoneattic

    Crate V5 mods... anyone?

    Not a chance!!!! Just kidding of course, whenever you're ready to go crazy with the soldering iron let me know. I'll bring the V5 in on Monday and let you check it out.
  2. stoneattic

    Crate V5 mods... anyone?

    I finally finished the VVR install and figured I'd give a little update on what I did. The mods I made are: 1. Removed the IC in the pre-amp and modified the tone control per jim_p's post 2. Added a Master Volume per jim_p's post 3. Installed the Hall Amplification VVR to control the...
  3. stoneattic

    Crate V5 mods... anyone?

    Thanks again jim_p. I would have to order a higher wattage resistor so I'll go ahead and put the 1W in there for now. Next time I'm placing an order I'll pick up a 3W to replace it. I'm not going to be playing this amp at high volume anyway. It's meant to be my living room practice amp. I...
  4. stoneattic

    Crate V5 mods... anyone?

    jim_p, after Bill gave me a hard time I finally tried to finish the VVR install and ran into a few questions/issues: 1) You suggested replacing R26 with a 25K, the closest I could find is 24K. Is that okay? 2) You suggested replacing R18 with the 4.7K from R25 since R25 is now jumped. R18...
  5. stoneattic

    Fender Champion 600 speaker upgrade

    Thanks for throwing me under the bus Bill! :) You guilted me into going out into the REALLY hot sweaty garage and work on the V5/VVR. I managed to mount the VVR board and MOSFET. I did get the MOSFET heatsinked(?) to the chassis after all. I had mounted the MV into the indicator light hole...
  6. stoneattic

    Crate V5 mods... anyone?

    You are correct about the mica washer, but there was no compound or fastener hardware. I had planned on using compound though. But I'm really glad you mentioned using a shoulder washer. I would have just used a standard screw. When I saw the mica washer I realized that it needed to be...
  7. stoneattic

    Crate V5 mods... anyone?

    And the big d'oh, take his soldering iron away, award goes to me. I had the screen grid and ground connections reversed on the pot. :thwap: Thanks again for all your help and patience. I'm thrilled with this little living room practice amp right now. For want I plan on using this for it's...
  8. stoneattic

    Crate V5 mods... anyone?

    jim_p, I pulled C3 but the only difference it made is that now the volume change from 0-4 is minimal, and the volume change from 6-9 is more dramatic. It still drops to nothing from 9-10 and there's still the dip in volume from 4-6, but it's not quite as noticeable, which could just be because...
  9. stoneattic

    Crate V5 mods... anyone?

    jim_p, I tried the 100k resistor in series with the pot as you show on the schematic but have essentially the same issue. The control seems a little better but it still drops to nothing above 9 or so and there's still the dead spot/drop though the middle of the sweep. SciHi, on your schematic...
  10. stoneattic

    Crate V5 mods... anyone?

    jim_p, I finally got around to starting the tone, master volume and VVR mods this evening. I started by swapping C1 with a 220nf cap and then did the master volume. At that point I put it back together to test it. The tone mod really helped and made the tone pot much more useful. The result...
  11. stoneattic

    Crate V5 mods... anyone?

    jim_p, Maybe I'm over thinking this, but I'm trying to decide on what capacitor to order to replace C1 and there a quite a few different types of film capacitors (polyester, polypropylene, metalized, etc). On top of that there seems to be few choices that have 200nf. I see plenty of 220nf, is...
  12. stoneattic

    Crate V5 mods... anyone?

    I also need a 1Meg resistor for the master volume, originally a 1/2 watt. I failed to mention that when I did your post 168 omp amp removal I didn't mod the tone control that you mentioned. I wanted to hear what just the omp amp removal sounded like. But now the tone control doesn't do much...
  13. stoneattic

    Crate V5 mods... anyone?

    Now I don't feel too bad about not following how the feedback related to what I was doing. :) I'm just adding the MV and VVR to your IC removal mod from post 168. The 168 mod and a different speaker REALLY improved this amp. It's actually enjoyable to play now. I was just digging though my...
  14. stoneattic

    Crate V5 mods... anyone?

    jim_p, thanks for the schematics, etc. I believe there is a mistake in the schematic for the VVR though. Your text says to replace R26 with a 25K, but the schematic say R28. I was showing diodes because the instructions with the VVR said they sould be used when using the VVR to control the...
  15. stoneattic

    Crate V5 mods... anyone?

    I ended up ordering the VVR from Hall and received it the other day. I marked up the schematic with what I believe would be correct to vary only the power stage voltages. On the attached schematic the blue line is to be cut and the mark ups in red would be the new connections/components...
  16. stoneattic

    Crate V5 mods... anyone?

    The VVR sounds very interesting and probably better than a master volume. i may give this a shot. This is a cathode bias amp correct? (I want to be sure and order the correct part)
  17. stoneattic

    Crate V5 mods... anyone?

    I did the no-opamp mod that jim p posted back in post 168 and it was a huge improvement! I also found an old 10" guitar amp speaker of somewhat unknown origin but figured since it had a much larger magnet and was paper instead of plasitic it had to be better and it sure is! I didn't do the...
  18. stoneattic

    Tone Pot Wiring

    I added the jumper to put the bridge pup on the first tone knob and I'm quite happy. The bridge pup is finally useful to me. :) You guys got me thinking about the no tone control middle pup so I'm thinking about going to no-load pots. Any thoughts/experience?
  19. stoneattic

    Tone Pot Wiring

    This is my current wiring: http://www.fender.com/support/diagrams/pdf_temp1/stratocaster/0134600_02D/SD0134600_02DPg2.pdf So if I follow, I just need to jump from the empty lug to the lug that the middle pot is connected to (same side at the lower right)? Should I change/add/subtract any caps...
  20. stoneattic

    Tone Pot Wiring

    Thanks guys. Good suggestions but I think I'm going to do my original plan. For some reason having one pup not having a tone control just seems wrong. :) I just wanted to be sure there would be no problems with the pups loading each other or any thing weird like that before I did it...
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