VT40+ has flubby bass on distorted tones « VOX

Member

I picked up one of these amps for practice and like a lot of the tones. I use a Fender Deluxe Strat with Samarium Cobalt pups and Carvin DC127C. The cleans sounds are great on this little amp, but the distorted tones don't have much beef on the bottom. I am getting some sort of rattling sound too when I crank up. I haven't torn into it yet to see if anything is rattling around. Anyone else experiencing this with the VT40+? I realize the 10"speaker isn't going to give huge bass, but it could be tighter instead of farty and flubby. It would be nice if we could post audio samples of what we are hearing on this forum.

Posted 2 years ago

cosmicrepairdude

Member

Stuff it
Check out these 2 forums, which start with the same post (mine) but get different responses:
http://www.voxamps.com/forum/topic.php?id=3276#post-16968
http://www.valvetronix.net/forums/unhappy-with-your-amp-s-sound-read-this-t3774.html
While it's open you can look to see what might be rattling.

Posted 2 years ago

docd

Member

Hey Skarpowicz... The CosmicRepairDude didn't mean that YOU should stuff the amp somewhere, but that you should stuff the amp WITH something, ie., put some sound-damping material inside of it. This seems to be the solution for what ails the small, light-wood framed amps.

Posted 2 years ago

cosmicrepairdude

Member

Thanks for clarifying my very brief opener, heh, heh.

Seriously, though, the issue is not so much with small and light grade wood, it can be a problem with larger and heavier grade cabinets, too. In a closed-back cabinet with no insulation, the sound waves coming off the back of the speaker cone reflect around the inside of the cabinet for a while and are heard through the cone (and add a second source of vibration to it). Some frequencies are amplified by this (usually mids), while others are diminished (usually in the bass), due to frequency cancellation. In addition, transients, like the sharp leading edge of a plucked note, are smeared, because the cabinet acts a bit like a reverb chamber. Since stuffing greatly diminishes these reflections, it smoothes out and extends the frequency response, and also makes it sound crisper/tighter.

Posted 2 years ago

wglover

Member

Acting on cosmicrepairdude's advice, I installed acoustic foam to mine.
It really improved the sound.

Posted 2 years ago

barfutten

Member

I got 1.25 inch acoustic foam in there on all sides of a VT50. That and lowering the bass knob to 10 o'clock. help a lot at high volumes. The VT's has tons of bass.

I changed the speaker to an old celestion G12H 30 watt. Has a lot of bass so I turned down the bass to max 9 'o'clock.

Installed a Weber Beam BLocker, for a 1x12 closed back it is heaven. YOu hear yourself much more clearly at all angles..

Posted 1 year ago