I have seen other topics with volume issues on the forums but couldn't find anyone with the same issue. I'm not sure if it is the master volume pot or something else. The Master Volume Pot does not control volume. When I turn the master volume pot though it pops and can affect the tone. The only way I can control the volume is via fbv express volume pedal, but sometimes the amp just jumps to full blast all of a sudden, ignoring the pedal all together. I have had the tubes replaced as well, just to make sure it wasn't just the tubes, but i still have the same problem. Any ideas if its just the master volume pot?
Spider Valve Mkii 212 Master Volume Issues
Posted 16 August 2013 - 06:01 PM
Usually, turning the master volume knob quickly demonstrates the power your amp harnesses. Some questions.. Has the master volume ever worked before? Have you tried disconnecting any MIDI and Ethernet connections? Does it happen on all patches? Does another knob take on the characteristics of the master volume?
Posted 04 September 2013 - 10:57 PM
i have the same problem. It´s hard to control the volume with the master volume. When i turn the volume 1 mm then its going up to the full volume and my ears nearly explode. I play my valve in my arpartment and so its hard to control the volume. I do at the moment a workaround that I use the "Channel Volume" but everytime i switch to another sound, the volume is going to maximum. The master volume is currently not to control with the knob.
Do you have an idea, what i can do with this knob ? Can i use any spray. Is is hard to pull the know out, that i can use contact spray ?
Posted 14 September 2013 - 04:42 AM
Hi Napynap, thanks for your reply. Yes the master volume did work before. Now all i get is static , and a fluctuating volume, and not the normal fluctuating issues everyone else has. It does do it on all patches, as well, I have tried without the volume pedal, and the amp is either putting out static, or if I play with the master volume It will stop for a bit and I get very bad fluctuation in volume from full blast to nothing at all, and it doesn't matter where the knob is pointed to, even when I have the volume knob turned all the way down. It seems to me to be that the pot had gone bad. I have heard that it may just need cleaning too.
I have experience in electronic and soldering, but its been a long time, and i don't have the proper tools anymore. So changing out the pot wouldn't be too challenging for me.
Posted 24 September 2013 - 08:53 AM
The Spider Valve has the power to unleash fury when turning the Master knob. This is definitely true, but it can be tamed. What I do on mine is save the channel volume of my presets to about 3-10%. This allows me to crank the master volume up over half way without blowing my ears out or upsetting neighbors. It is best to manually adjust channel volumes on all of the presets you use to prevent bursts of volume.
It sounds like your amp needs servicing. Use the link below to have an authorized technician diagnose the issue with your master knob.
Posted 04 May 2014 - 04:18 AM
Posted 04 May 2014 - 11:00 AM
You HAVE to use the Channel Volume(s) to control the relative level between patches. If you turn the Channel Volumes down for your desired presets then you can turn the Master Volume up HOWEVER, the extreme danger here is that you cannot permanently overwrite the 16 Model Presets on the left hand side so if you have your master volume up and you accidentally turn that left hand knob you will have a horrendous volume problem once the factory preset kicks in. It is really a bad design from that perspective. What I did to audition between the presets was to even them all out with each of the Channel Volumes and save them back into the banks ... then I could turn the M.V. up but I made a point of NEVER touching the 16 Model preset knob. If you own (and like this amp) these are the things you have to live with. I still have mine but I use a DT25 on a regular basis now and the SV 212 MKII is a backup. It still works perfectly fine. My only complaint is that it is too %$#@ heavy as all 2 x 12 combos are.
The basic rule with these amps is .... if you are using that Master Volume at 12 o'clock or more you have to be CRITICALLY careful with what you are doing.
Posted 12 May 2014 - 09:17 AM
Dear team Line 6 .I have just bought a as new condition Line 6 Valve and cab. The only issue that i am finding is the master volume pot being jumpy.... i can set the vol to 1 and when move to 2 or even below the amp is jumping and pomping nearly full power to the cab. Can i get this sorted by posting the whole plate to you so you can guys replace the pot ? please contact me ASAP as i need the amp. Kind regards .Al
Posted 07 February 2015 - 02:55 PM
certainly the master volume is a real pain in the neck but can be easily solved with a volume poti which is linked between the Pre amp out and Power Amp IN, basically allowing a more sensitive volume adjustment, see http://stinkfoot.se/archives/2159 I used a 100 k ohm log/Audio pot and it works great, makes the amp soo much more responsive. see also attached diagram
Hope it helps!
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