Posted on Marshall Forum.Greetings,This is my first post to these forums, just signed up. I actually have been reading the extensive post regarding the DSL5C amplifier. As a new purchaser of that amp I wanted to share my recent experience - like right now recent.First, I do like the amp very much. I have a modded Blues Junior Tweed III with Cannabis Rex speaker and recently sold a Tweaker 15, which essentially funded my DSL5C purchase. The BJr. III and the 5C complement each other nicely. The Blues Junior is very loud so I have a Rivera Rockcrusher on it. Great amp and great attenuator.But I wanted something that had more gain to learn some of my favorites like Black Sabbath, Aerosmith, Led Zeppelin, AC/DC etc. The Tweaker was nice but it seemed inconsistent for some reason. I don't know, maybe something was going bad in it - I bought it used. I figured it might be the tubes so I put two new power tubes in - JJ 6V6's. But it still seemed to vary when I used it. So I traded it in and got the DSL5C.This is my first Marshall in quite some time, my only other being a White 50 watt head I got back in the 90's. In any case I like the 5C very much. BUT, big but, I just put a 10" Celestion Greenback in it and let me tell you, if you get this amp, get this speaker. Holy Cow! I mean the speaker is brand new and will open up even more but what a difference. And there is plenty of bass - I do not feel any need to go 12" whatsoever. I am using a 2015 Gibson Les Paul Traditional with 59 humbuckers and I also have a 2013 HSS American Standard Strat with a Diamondback Humbucker in the bridge and Fat 50's in the other two positions.I am also running a Seymore Duncan Vapor Trail analog delay and a TC Electronics HOF reverb through the effects loop.First off, the amp is quieter, which I am very happy with. I play in a townhouse and sound carries throughout the place very easily. Not so much to the neighbors, but internally. So the headphone option is great and works pretty well. But this new Celestion reduced the volume enough, and just changed the character really, that it allowed greater use of the controls, and, by extension, allowed the sound to open up more because I could turn it up more.Second the really glassy, and fizzy, distortion is gone. It now really sounds like a real amp. Seriously. The tone is more balanced and much less fizzy sounding. A real growl instead of an over emphasized sizzle. I mean I got so excited when I heard it I ended up login in here and writing an excessively long first post ;-).But seriously. I was reading all the posts about the different mods analyzing everything. But this speaker change, at least with my setup, which I took particular care to describe above, totally changes the sound characteristic of this amp.Which leads me to my last point. After hearing how this sounds, I am not so sure the amp was not designed with this speaker in mind. Obviously they were building to a price point and putting a $120 speaker in this amp changes that considerably when the original speaker costs $35. But I really think this amp was designed with this speaker in mind.So I will stop here. But given all the reading I have been doing I thought my experience would be helpful to someone contemplating the purchase of this amp. In its current state I can get a variety of tones on both channels and do so, as one would, by adjusting volume and tone on my guitar. And one other point. Historically I have found it much more difficult to get good tone out my Les Paul then out of single coil guitars. Another reason I sought out this amp. But this amp sounds very very nice with my Paul.Sorry for the long post but I really wanted to share this.Take care,john