My new Baby Plexi (Marshall SV20C) amp.

NegativeEase

New member
Well fellas, It's amazing but I'm swapping it out... It really nails vintage Marshall vintage Plexi ina 20W/5W form factor -but the Celestion V Type 10" just can't hang at high volumes without the bottom getting really loose. This combo sounds incredible at 50-75% but that's not enough for anything but the studio or solo. And it's sounds even more incredible driving my Greenbacks. but I really wanted a little Plexi combo to travel for backup and thought maybe this could do it, but it's just not quite enough. If it was as loud and consistent at all volumes like a 22W Deluxe -I'd be all in. -but that 10" speaker is the problem -not the amp.

However, for a studio or home, this would be an absolute little muthaf*cka -can't recommend it enough. The touch sensitivity, classic growl, and unmistakable tone are all there in this little amp.

I'm going to swap this out for the SV20H and pair it with a G12 Greenback or V30 cabinet -and then I'll have something more to my need -unfortunately Marshall doesn't offer a 12" version of this yet in a combo... when they do, I'll probably be in for that %100.

I shot a quick cell phone vid rocking on it before I packed it up, I'll go to the trouble and professionally mic the SV20H version I've got coming which is the identical amp without the 10" combo form factor.

https://vimeo.com/391537131

 
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Re: My new Baby Plexi (Marshall SV20C) amp.

That sounded pretty good. Not bad for a cellphone mic. How did you upload that vid without doing YT?
 
Re: My new Baby Plexi (Marshall SV20C) amp.

You should try a C-Rex speaker. But I still don't think that you'll get a tight low end out of that amp at high volume.

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Re: My new Baby Plexi (Marshall SV20C) amp.

im sure a better 10" would work better but i think the head/cab is probably the way to go. if nothing else having a greenback loaded cab and a v30 or g12h loaded cab would give you some tonal and volume options. cool amp for sure! impressed each time i hear one
 
Re: My new Baby Plexi (Marshall SV20C) amp.

im sure a better 10" would work better but i think the head/cab is probably the way to go. if nothing else having a greenback loaded cab and a v30 or g12h loaded cab would give you some tonal and volume options. cool amp for sure! impressed each time i hear one

yeah, I was trying to avoid a head and cab, but looks like I have to go that route.

It's definitely an impressive amp -especially for recording.
 
Re: My new Baby Plexi (Marshall SV20C) amp.

You should try a C-Rex speaker. But I still don't think that you'll get a tight low end out of that amp at high volume.

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I'll have to look that one up -thanks.
 
Re: My new Baby Plexi (Marshall SV20C) amp.

it might be worth trying a better speaker before you ditch the combo if thats really what you would prefer. i dont care for the v type speakers all that much, not bad, but not good. eminence, weber, and celestion all make some damn fine 10" speakers. weber ceramic 10vs might be sweet for example
 
Re: My new Baby Plexi (Marshall SV20C) amp.

I love the Celstion G10F-15 in my Marshall Class 5. Maybe try another speaker.
 
Re: My new Baby Plexi (Marshall SV20C) amp.

I'll have to look that one up -thanks.
I'm not sure if they make them in a 10" version. It's a great Eminence speaker though. 50 watts and rated at 103db efficiency. I've run my little 5 watt Picovalve through one for years.

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Re: My new Baby Plexi (Marshall SV20C) amp.

WGS ET 10 it's what's in my Mesa 20 Watt Subway Rocket here. Biggest sounding and tightest 10 I have ever used by far!
 
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Re: My new Baby Plexi (Marshall SV20C) amp.

That Marshall should sound massive through a closed back 1-12!
 
Re: My new Baby Plexi (Marshall SV20C) amp.

I'm not sure if they make them in a 10" version. It's a great Eminence speaker though. 50 watts and rated at 103db efficiency. I've run my little 5 watt Picovalve through one for years.

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they do make a crex10 but its not as efficient, not sure what it sounds like either but i like the 12 for a smokey/warm speaker
 
Re: My new Baby Plexi (Marshall SV20C) amp.

it might be worth trying a better speaker before you ditch the combo if thats really what you would prefer. i dont care for the v type speakers all that much, not bad, but not good. eminence, weber, and celestion all make some damn fine 10" speakers. weber ceramic 10vs might be sweet for example

My amp guy last night said the same thing, the Webber's larger magnet will keep the the low end together more effectively.
 
Re: My new Baby Plexi (Marshall SV20C) amp.

My amp guy last night said the same thing, the Webber's larger magnet will keep the the low end together more effectively.

Keep suggesting the WGS ET 10 for a reason. I ran 2/10 Fender Prosonic combos for years and now am running the 1/10 Boogie Subway, the ET 10 is the best sounding 10 under gain I have used. Is it just like having a 12 no but it is the biggest roundest and tightest 10 I have used.
Here is the info from WGS on the speaker.
https://wgsusa.com/et10
 
Re: My new Baby Plexi (Marshall SV20C) amp.

that weber i mentioned is really nice, still very british sounding to not stray from the classic marshall tones. big magnet, like 40w power handling i think, big voice coil, nice cone, pretty efficient, doesnt fart out, good top end without being shrill... it ticks all the boxes for me. havent tried the et10 but ive heard good things
 
Re: My new Baby Plexi (Marshall SV20C) amp.

Keep suggesting the WGS ET 10 for a reason. I ran 2/10 Fender Prosonic combos for years and now am running the 1/10 Boogie Subway, the ET 10 is the best sounding 10 under gain I have used. Is it just like having a 12 no but it is the biggest roundest and tightest 10 I have used.
Here is the info from WGS on the speaker.
https://wgsusa.com/et10

my trust is building with you sir... lol
 
Re: My new Baby Plexi (Marshall SV20C) amp.

Thanks for all the input

So I have a 70W 12" Celestion V Type -that when driven by a Bassman or Deluxe is super tight and just slightly scoopy -I'm going to do a test today and drive the 12" directly and see if the bass gets loose above 80% drive from the plexi -this way I'll know if it's the speaker size/rating or the plexi circuit changing characteristics once in the very red.
 
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