jvm 410

  1. G

    Buy components for mod JVM205c

    Hi all, hope you are all doing well! I’m seeking advice about where can I buy the components to perform the mod(resistors, capacitors, choke etc) Another one, which Tube do you recommend? Thanks a lot for any advice.
  2. S

    Question: JVM 410H Plexi Cap Mod

    So I successfully completed the anti-compression, negative feedback, and choke mods this last weekend and love the results. I also swapped in and biased a quartet of KT77 power tubes at 68mV per side. I attempted to do the Plexi cap mod using a Solen "Fast" Cap 630V 0.68uF non-polarized...
  3. wonderingape

    Marshall JVM410H schematic

    Hello, I tried to calculate the voltage gain of each gain stage of Marshall JVM410H. For the first gain stage, the unloaded voltage gain is 70.59 V. It is 77.88 V for the second stage, 2.01 for the third gain stage and finally 60.56 for the fourth or final gain stage. The total voltage gain for...
  4. wonderingape

    What is the plate voltage for HT3 at V8b in the JVM410H schematic?

    As we can see, the plate resistor for HT4 at V7a is 220000, but I don't know what is the value for HT3 at V8b. According to this link https://www.ampbooks.com/mobile/amplifier-calculators/output-impedance/calculator/, we can calculate the unloaded gain for an individual gain stage.
  5. wonderingape

    Peak decibel gain of JVM410 OD2 red channel

    According to this statement, Post in thread 'What is the highest gain guitar amp?' https://www.thegearpage.net/board/index.php?threads/what-is-the-highest-gain-guitar-amp.2165296/post-30886030, the peak decibel gain of Marshall JVM410H OD2 red channel with the gain knob at max is 115 decibel. Is...
  6. wonderingape

    JVM410H OD1 and OD2 with the gain at max

    I tried to search for audio and video demos of JVM410H OD2 with the gain at max but I only found one which is in Thai. Many people said it was too noisy and non-usable. Have to watch and see some demos of OD1 and OD2 with the gain at max before getting one. What's the difference between OD1...
  7. Federico Valle

    JCM2000 and JVM410 great amps for apartment?

    I have the JCM2000 50w made in UK and the JVM410. They are great sounding Marshall amps at low volume, both in clean and in overdrive. Are these really great bedroom player amps? I'm considering only their tone, not the sizes and weights... Since I'm vintage tone lover, I'm using the 2000...
  8. G

    Marshall JVM 410C - Amp pops when StandBy if turned OFF

    Hi, I have a Marshall JVM 410C. I use to turn ON the amp, wait about 30 secs and turn StandBy OFF, to start playing. I noticed that a "pop" sound is performed when I turn OFF the StandBy. Is that normal??? It is not a loud sound, it´s in fact a little noise, only. I own this amp for a...
  9. FIFTHANGEL

    JVM410HJS opinions on if this amp has been modded.

    I just got this jvm410hjs from a guitar center in Omaha, NE. I had it shipped to a gtrcntr outside of ATL. Upon opening the package i noticed the back steel panel was held on by only one screw, and proceeded to look inside and found the quartet of tubes were not all the same. i know they...
  10. L

    JVM 410h: No sound out of Certain Channels

    Hey Folks My Marshall JVM410h decided to stop working (except minimal output and noise) on the following channels: Clean: red OD1: orange, red OD2: orange, red The other channels are working just fine. Maybe something in the preamp? Ive never encountered any problems so far, so im slightly...
  11. P

    JVM 410C Popping Noise

    I’ve had a Jvm 410c for a few months now and it has been quite amazing, it is my first tube amp and i bought it very cheap so i think the valves and the amp have never been checked. It was all quite smooth but today i was playing some purple as usual and after like 2 hours of playing i turned it...
  12. D

    Jvm410h Brbs Mode

    Hi guys, I wanna buy Marshall JVM410H but one seller offers to me with BRBS mode ("No-Squeal" Mod). Can someone tell me something more about this mode? How this effects on tone and on green/orange/red mode changing on amp and some info.. I heard amp, sound killer. I have JTM45, and I wanna...
  13. mulletmule

    Jvm410h Vs 410hjs Comparison Video

    I just posted this in another JVM thread but I figured I'd do a separate post. I see so many questions where people ask the differences. I used to have both so I made a video to show that. I used the same guitar and same cab and set everything at 12:00 to fairly compare the modes of each...
  14. B

    Dead Channels And Loss Of Gain Jvm410h

    I love my marshall Jvm 410H to death, but recently i took it to a local out of home marshall certified mechanic. I was just having my tubes changed and the bias redone and everything. Everything goes well, i pay the man, i then get home and plug it in. Let the tubes warm up for a bit, then i...
  15. TheRoadie

    Jvm Orange Doesn't Work

    Hey folks. I just replaced R58 with a 178K resistor. As I plugged my guitar in, the green mode sounds perfect, but I have no sound from the orange mode. The red works, but with a lot less gain. I checked the tubes, they are ok. It sounds like the whole orange gain stage doesn't work. Could I...

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