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Genz Benz Shuttle 9.0 Appreciation Thread

#705
mntngrown said:
So thanks for pointing me towards the pre-amp tube as a possible issue. I took the lid off the 9.0 and saw nothing like this. http://www.flickr.com/photos/jtm260/463498866/
Barely a moderate red glow in a couple spots.
The blue light under the tube in the 9.0 actually is a hindrance to seeing if the tube glows robustly.
So I ordered a few to see if replacing will help
Click to expand...

First of all, those are power tubes in that photo and the heaters are considerably higher power and the heater filament is more exposed at the top on those tubes.

The visible heater incandescence has nothing to do with performance. Swap the tube with a known good tube and see if the noise changes. That's the definitive test.
 
#706
I got a chance to play my 9.0 last night for the first time at practice and it definentaly sits in the mix a little better than the 6.0 it seemed like I didnt have to be as loud to be heard.
I do need to try a new tube because if I put the input gain anywhere near the light coming on I would get a clipping distortion type noise when I would dig into the strings a little and not distortion in a good way,it sounded like I was overdriving the preamp side.
 
#708
Unfortunately vacuum tubes do not fair well in shipping, especially inside an amp for some reason IMO.

Wehn I ship an amp, I ship the tubes in a seperate box but that would be kind of silly with a Shuttle.

On top of that, dang good tubes can go bad for no apparent reason as well.

What hurts is when you purchase NOS tubes and one comes in with a getter rolling around in the bottom of the bottle.:eek:
 
#709
Plugged in my S9 to do some tube rolling to see if that would cure the clipping noise when I would turn up the gain and all I heard was static from the amp with or without the mute,looks like the Tube completly failed at this point.
I installed a new tube and it works perfectly including the gain.
 
#710
FuzzBoxVoodoo said:
I got a chance to play my 9.0 last night for the first time at practice and it definentaly sits in the mix a little better than the 6.0 it seemed like I didnt have to be as loud to be heard.
I do need to try a new tube because if I put the input gain anywhere near the light coming on I would get a clipping distortion type noise when I would dig into the strings a little and not distortion in a good way,it sounded like I was overdriving the preamp side.
Click to expand...

Can you post your amp settings? The input O/L LED monitors several preamp points and with extreme settings it is possible (not likely but "possible") to overdrive stages other than the tube. When these points overdrive, the LED will light. Depending on playing style, it's possible to pass right through the tube's more gentle overdrive region without realizing it.
 
#712
I turned the Gain down to 10 o'clock,input volume up to 1 o'clock,bass was down to 10:30 everything else was flat with no signal shaping on,it sounded fine on these settings.
If I moved the Gain to 1 o'clock and the input volume to 11 then it would make that nasty clipping noise if I started to dig in even a little bit,the Bass is a G&L 2500 set fairly flat also.
Not sure if you caught my post but a new tube did cure this problem,actually I put the original Ruby tube back in it evidentally the EH tube did'nt survive the shipping to me even though it was very well packaged by another TBer.
Thanks for your concern.
Steve
agedhorse said:
Can you post your amp settings? The input O/L LED monitors several preamp points and with extreme settings it is possible (not likely but "possible") to overdrive stages other than the tube. When these points overdrive, the LED will light. Depending on playing style, it's possible to pass right through the tube's more gentle overdrive region without realizing it.
Click to expand...
 
#713
Does the Aux-in have some sort of high cut filter? I was playing late and decided to give my neighbors a break and use the headphones and aux-in to jam around.

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Listen to that, the solo gets completely muted. I know it's not the audio source, switched cables and whatnot and it sounds fine directly into my headphones. I guess it makes sense that it'd have some sort of high cut since it's a bass amp but it really hinders the usefulness of the aux-in.

Otherwise, awesome amp. Nothing but compliments about the tone and it fits in in my cable bag. Love it!
 
#714
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