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This post is getting a bit old but I wanted to mention I replaced my rattling 6L6. I purchased a matching pair of 440 yellows. Unfortunately my markV sounds like *** now and will swap back the one with the rattle time permitting in the next few days to make sure it's the tubes. I got a good 4...

Thanks again. That link is pretty much exactly what I needed. You're a top resource given you have just two posts. I swapped out the rattling valve (far right looking from the rear), something loose inside it. I noticed there is still some rattle at higher volumes with not a lot of bass setting...

Thanks for the info Grundletaint So I guess Mesa have been selling these str440 for several years. I picked these up for $50aud each, less than $80US for the pair at current exchange rate. Hard to pass up, not to mention I needed them anyway. Ory

What Barry said. Try each setting (goes without saying), switch switches, full range the pots, and make sure you play it loud etc.

I tried searching the forum for a previous post to answer this, I just spent a long time looking but couldn't find an answer. Sure someone has mentioned it somewhere, sometime! Help I bought my markV new (it was 5 years old in the shop, and looked after really well), it had ST440s in it when I...

Chinese made! Is there are noticeable price difference on these, or is that not how it works? I'm up for a new pair for the mkV, and llc, very much interested in this post. Btw, big mess of flower petals in the yard after my daughter was playing, made me think screamingdaisy? Once were daisies...

Assuming it's the same when switching channels from the footswitch or rear channel selector? Guess you would have tried all combinations and settings in ch2. Could be a high resistance at any point along the circuit from dust or oxide. If you haven't already tried cycling all the pots and...

I get it, just carrying on for fun. Sometimes I like to do that with my kids. Bit of fun is ok so long as everyone knows the rules. My turn. What I can't believe is that every one in the business of amping guitars through a vacuum chooses to use 6L6's, 34's, 84's, 12A**'s, and why would they put...

So this Dummy (me) finally (after only several months as a BB member) clicked on the Mark Series link for the first time today. Lo behold :shock: 'The Post'! Ed, I'd been flying blind. I can safely say my llC is not a + and has not been upgraded. :| (falls safely inline with the s/n and date...

Hi Dave, I'm in Sydney, likely to travel it to Canberra in person. Scary to think I used to lug it every where in the back of my van with the rest of the band gear. Bassist had a +400. None of us had road cases. Further up and down the Hume to Brisbane and Melbourne, quite a bit for a few...

Replying to my own post! (because I'm procrastinating about something else) I have decided after consulting reputable Mesa tech. No + upgrade for now, staying it as is, other than dirty pots it ain't broke. Sometime before August will be serviced at ProAudio in Canberra. Tubes, caps, detritus...

Removed :!:

Thanks GTS I think both mine and JCB's could still be on their journey to eventually becoming llC+s. BoogiBabies, you certainly laid out the ground work, and I do mean work. Plectrums' raised high! I have only scratched the surface however I think I'm going to have many months great reading. (I...

The response direct in via loop return is flat all the way. JCB, nice pics, rather clean machine for its age, (I need to learn how to load photos direct in here)! Look at me noobing on this too! I see the power board is the 7C1 you were saying is in the C+ standard. It looks very similar to the...

Will do again in around 8 hours. I have done so previously and recall it being a flat response - no change in tone. Not having any reference, I'm second guessing and will retest. I've never been disappointed with the sounds, mainly interested in learning about what it actually is and it's...

Hey Scott, nice little amp the 22. I had the same initial thoughts on the 4 ohm 8 ohm issue. I've played it at volume several times now in this combination with no apparent issues. Just sounds fuller. Well I hope I didn't do it any damage. However you've got me worried and I think I'll parallel...

http://onedrive.live.com/redir?resid=5f0efe041275ce10!1693&authkey=!AKl5lvVS8cxxvGY&ithint=album%2c Thanks for all the details JCB. Some photos linked. Seems this one must have made it back to mesa. The power board has 7C on it missing the 1. The preamp is RP10. X101 and simul-class...

Thanks for the reply JCB. Too right about the forum. Thinking I'll pop the C open and check board and transformer details. I've never been disappointed with it's sound so I'm not sure what difference would be between it and a factory. About a year ago I enquired with Boogie about a service...

I've had my mkllC since 1992 or 1994 (blurry times), had always just been happy with it. A few years ago I'd googled some info on boogies and noticed the fuss about the C+ so I checked mine and found it likely to be a moded C. S/n 11397 marking under chassis is 7/83, and cabinet is 8/83. The...

Not sure if this explains it. In dc circuits the bigger the load (higher resistance) the bigger the voltage drop = more power consumed. The speaker being an ac circuit I think it does the same with resistve loads but in a different way dependent on frequencies and some rms formula. That may...