Conrad Johnson Owners.com

Can you try again, maybe with a different browser? It works for me, and I also tried it with your user permissions as well.

Perhaps someone else could confirm as well?

Thanks for the writeup. I may do an upgrade on my MV-55 in the future and there are definitely some great ideas here.

Welcome to CJO. Great to have you with us. I'm sorry I don't have an answer for you but if you don't hear back I would recommend getting a thread checker. They are under $20 and you can check on the size yourself. Probably a nice thing to have in the tool box anyway. Something like this for example:...

Sounds like these upgrades will keep the MV-55 running flawlessly for many years to come.

May I ask how much all the replacement parts cost? As a fellow MV-55 owner, this is something I may consider doing in the future.

But all the others are at the mercy of unfriendly, fickle sources. And this is my biggest concern. I don't think their can be relatively inexpensive quality tube production in the West. Russian sources are shut down for all intents and purposes. And we have not seen quality tubes coming out of Asia...

I'm in a similar boat. Last time I heard Zellaton speakers was a number of years ago but I was very impressed. It was outside of my price range so it was more of a "fun listen" vs true consideration. I think if CJ is dropping big money (for a small company like them) on their listening roo...

Burmester makes some incredible gear. Not sure how much "better" you can get in the SS world. Maybe, something like Dartzeel, but now the price is going through the roof.

RJ, I think you are a tube guy like the rest of us. Why try to find SS options when it's the tube sound you like?

Glad it worked out well. Tube depot is really great. I've bought from them before.

It's odd that Solen would not view this is a problem to the extent of properly (if at all) marking their caps.

In all honesty, I think your supplier is making claims that are not supported. The data sheet from Solen is going to be the final word. I've only bought Solen from Solen directly so can't speak about 3rd party suppliers.

Do solen caps even have markings for polarity? I'm trying to remember if I saw anything on the caps themselves to indicate direction and I just don't remember seeing anything on them. Maybe I'm just forgetting?

Interesting videos. Question, is the noise only introduced if there is something coming into physical contact with the backwards cap?

I'm familiar with how a capacitor functions. I don't recall this information on the solen caps I have bought before (similar to the black solen cap you have in the picture). Makes me wonder if I installed them correctly (last time was a cap replacement in the crossover for my magnepan n 20.1 speaker...

Do those caps have polarity?

Hi David,
Welcome to CJO, great to have you with us.

All our available schematics are available for download in the troubleshooting section of the forum. If it's not listed there, we don't have it.

Link to schematics: https://www.conradjohnsonowners.com/viewtopic.php?t=128

It's a little beyond "a 3 year old", but the basics are pretty easy, and it can do a lot if in the future you really want to get crazy with it.

Calibration mic: https://www.minidsp.com/products/acoust ... ent/umik-1

Calibration software: https://www.roomeqwizard.com

Interesting little device. I use active room correction/equalization in my home theater setup. It's near impossible to calibrate 8+ speakers all at once with simply "moving them around" or putting acoustic treatments here and there. However, my expectations of hometheater is very different...

Paolo,
Do you just do the room correction by ear or do you employ any calibration tools?

I don't, but not sure how much it matters in this case as the ML's have their own amplifier to control the woofer and the ESL membrane is so light that it really doesn't need dampening in the traditional sense (like you would with a large heavy magnet).

A less ideal alternative would be to use a thin but insulating glove, AND with your other hand firmly in your pocket and feel the resistors to see if the two triads are equally warm. Not sure I should be recommending that and you'd need to be very careful! I would be cautious with this one. You can...