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Tech21 VT-Bass - where's the magic ?

For an IEM gig where you want honest to goodness real Ampeg tone with no compromise, I'd look into the REDDI. Straight up DI with a tube and actual power and output transformers. More expensive than the VT yes, but does a dead-on cop of a clean B-15 set flat and run through a speaker out DI. Not a simulation but the real thing. Done two gigs on mine and became a royal tube snob again and lost all desire to use a cab mic, and can't stand to use anything but my tube Ampegs as a monitor because I get jealous of the crowd. Yeah, it's expensive and heavy as far as DI's go, but it's so noticeably better to anyone with half an ear.

All respect to the VT, but you really can tell the difference. 2d vs 3d, except this is a 3d that isn't annoying and requires stupid glasses.
I here ya, man. I love the REDDI and it would be great to have one, but that is a hassle also. It's not always easy for me to get AC power for a DI, so that's not something I'm wanting to do either. You're right though in that there is no substitute for the real thing when you want that real tone. The VT is close enough for me if I could just control the treble the way I want to.
 
There are also other settings to reach flat.

yes there are, but that's just the first one i found that did it. but IMO, with the speaker sim on, there really is no flat. and whether you like to 'hear' freqs at 5KHZ or above, the sim does mess with the overtonal balance for me. for a DI that's fine, but i'd prefer to let my cab roll it off for my amp/stage rig.
 
AFAIK, the speaker sim basically rolls off the highs. i researched it and found out how to mod one to bypass the the sim circuit but when i took it apart, all those tiny surface mount components made it look like a big hassle to do it so i just put it back together without doing it. i do know that if you bypass the speaker sim completely, it raises the overall gain of the pedal, so you'd also might want to add a trim pot to the bypass switch to match the gain with and without it.

The speaker sim defeat which I added does act as described above - a lot more treble and a large volume increase. Basically, I used a schematic to bypass the sim part of the circuit. Modded this way, the treble, which is already hard to control, sounds pretty raw. However, from what I've heard, the V2 is different. The tone changes, but the volume remains fairly even. Although I'm not certain, I don't think that they simply bypass... perhaps switch to a different EQ which preserves the relative level?
 
Rolling highs of naturally in the cab or through a speaker sim seems to be the same thing to me. What I don't like about the treble control is that you have to cut it so far back to tame that 3.5k peak that it also attenuates the already attenuated highs even further. That is NOT how an SVT/Fridge works at all IME. You can get clear, clean highs on an SVT without that harsh bite.
 
Rolling highs of naturally in the cab or through a speaker sim seems to be the same thing to me. What I don't like about the treble control is that you have to cut it so far back to tame that 3.5k peak that it also attenuates the already attenuated highs even further. That is NOT how an SVT/Fridge works at all IME. You can get clear, clean highs on an SVT without that harsh bite.

Yep... the treble EQ on the VT is wonky. Mine is usually set close to all the way off.... and I like a fairly bright/clear tone. FWIW, I changed the capacitor which sets the the treble control's acting frequency to raise it up to ~ 3.9 kHz, which tamed it a little.
 
I have a strange report. I've owned two VT's and one VTD. I know these pedals well. I traded my VTD for a BDDI deluxe a few weeks ago thinking I wanted to go back in that direction. I was sorely wrong because I just couldn't get the sound out of it I wanted. So I ordered a brand new VTD, and the treble on this one is NOT out of control as on older models. I have always cut trouble to at least 10:30 or less on these pedals. On this one I'm actually running treble around 12 or 1, and it's not harsh at all. It sounds perfect.

Could Tech21 have changed something and not announced it? Or did my ears just shift in trying to work with the BDDI deluxe those few weeks? Whatever it is, I'm very happy right now!
 
Sorry not sorry for resurrecting this gold mine of a thread, but a couple of years have passed and I have a VT Deluxe on its way which will be replacing my bddi deluxe. What's the deal on this pedal? Has it changed at all since the last posted comment? Which funny enough raised the possibility of it having been changed by Tech21. Cliffhanger.
 
Cliffhanger indeed...

I'm pretty sure, that the V2 cannot be made as flat (with the speakersim engaged) as shown in the graph on the last page. The bump at 4.5kHz is way too strong.
With the sim off however, there's still a high roll off. Not really noticeable when playing bass alone, but with the highs of the SubT it's pretty obvious.

Ok, some story continues Invalid Link Removed. It's in German, but the graphs are clear I think.
The different versions obviously are quite different. The v1 has the speaker sim, but no peak. The v2 then gets the peak at 4,5kHz, but the VT DI has the peak and the sim somehow separated in two switches, speaker sim and bite.

The VT DI has a rolloff of highs when blend set to minimum compared to the bypass signal. The sim then is a very steep dropoff 4,5kHzish. The v2 also has the rolloff when the sim is disengaged.

I think the pedal gets better and better. Very nice to see.
I fall in love with my v2 more and more.
 
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Sorry not sorry for resurrecting this gold mine of a thread, but a couple of years have passed and I have a VT Deluxe on its way which will be replacing my bddi deluxe. What's the deal on this pedal? Has it changed at all since the last posted comment? Which funny enough raised the possibility of it having been changed by Tech21. Cliffhanger.
The VT Deluxe is still the same.
 
...One thing that does work is to set the amp flat (not 12 oclock on the mb amps).

Treble = 10:00
Hi Mid = 2:00
Lo Mid = 1:00
Bass = 10:00
Contour = Off...

Amazing. Those were exactly my settings tonight—running a piezo (gage) equipped upright->pre-amp (paraDI) into a GK mb800 powering a fEARful 15/6/1. Really!!!
Sounded just like my upright, but louder. Had the tweeter maxed, too.

Didn't try the VT pedal. :roflmao:
 
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