Damaged1
New Member
- Joined
- Oct 29, 2018
- Messages
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Hi all - I am a new tube amp owner, but am also fairly capable middle aged guy who has been playing on and off since the late 80's. I found great info here including the awesome DSL100 signal flow chart (which I can't link yet) and various tube recommendations, but wanted to share what I am seeing and get some advice. I know this is a bit involved, so please bear with me...
1 - Has there been any real change to what each tube does in the signal path on the new HR models from the previous version (is the old diagram above still valid)?
2 - Does the factory keep changing what tubes are in these? Bought the amp in early Sept, it had issues (loud pops, crackling, bias drift), and just received a replacement. The tubes in each appear to be different:
Original:
Manufactured Nov of 2017
V1 red letter Marshall ECC83
V2 mystery tube (no markings)
V3 white letter Marshall ECC83
V4 mystery tube (no markings)
Power tubes are red letter EL34's
Replacement:
Manufactured May 2018
V1 red letter Marshall ECC83
V2, V3, and V4 all have Marshall white letter ECC83
Power tubes are gold letter Marchall EL34's.
The replacement amp was fizzy as hell at lower volumes (original never was). Couldn't dial it out with bias settings (tried from 90 down to 72, and all points in between). If I EQ it out, the distortion is either muffled or dead. I swapped the preamp tubes from original to the replacement, and that solved the fizz. Any idea why these tubes would be so different just a few months apart in a new model?
3 - Is there a tube swamp to tame the red Ultra channel at lower volumes? Rarely use real clean (just roll volume down a bit), red classic is dark and "dirty" at best (would be useful with a boost pedal, which I don't use), but I can dial in green ultra to be similar to GnR to slightly heavier AC/DC tones by hitting 5.5 on the gain and 81 on the bias (with all else set to around 6). Problem is, when I do that the red ultra is muddy and over distorted. It sounds like I would expect if the gain were on 10 with a big muff or the like in front of it. If I dial back the gain and EQ for the red channel, the green ultra loses all the body and sustain, as if the volume pot was slightly rolled down on the guitar. These go away at high volumes, but I play 30 hours at home for every 1 at a gig, so would like to address if possible. Obviously don't want to kill off the stage volume tone either.
In short, the green ultra is fantastic (would still prefer to shave some fizz off at lower volumes if I could), but can I use different tubes to bring the red ultra into solo boost territory and is there anything to make the red classic a tad more aggressive and brighter short of a tube screamer)?
Thanks for your patience and assistance...
1 - Has there been any real change to what each tube does in the signal path on the new HR models from the previous version (is the old diagram above still valid)?
2 - Does the factory keep changing what tubes are in these? Bought the amp in early Sept, it had issues (loud pops, crackling, bias drift), and just received a replacement. The tubes in each appear to be different:
Original:
Manufactured Nov of 2017
V1 red letter Marshall ECC83
V2 mystery tube (no markings)
V3 white letter Marshall ECC83
V4 mystery tube (no markings)
Power tubes are red letter EL34's
Replacement:
Manufactured May 2018
V1 red letter Marshall ECC83
V2, V3, and V4 all have Marshall white letter ECC83
Power tubes are gold letter Marchall EL34's.
The replacement amp was fizzy as hell at lower volumes (original never was). Couldn't dial it out with bias settings (tried from 90 down to 72, and all points in between). If I EQ it out, the distortion is either muffled or dead. I swapped the preamp tubes from original to the replacement, and that solved the fizz. Any idea why these tubes would be so different just a few months apart in a new model?
3 - Is there a tube swamp to tame the red Ultra channel at lower volumes? Rarely use real clean (just roll volume down a bit), red classic is dark and "dirty" at best (would be useful with a boost pedal, which I don't use), but I can dial in green ultra to be similar to GnR to slightly heavier AC/DC tones by hitting 5.5 on the gain and 81 on the bias (with all else set to around 6). Problem is, when I do that the red ultra is muddy and over distorted. It sounds like I would expect if the gain were on 10 with a big muff or the like in front of it. If I dial back the gain and EQ for the red channel, the green ultra loses all the body and sustain, as if the volume pot was slightly rolled down on the guitar. These go away at high volumes, but I play 30 hours at home for every 1 at a gig, so would like to address if possible. Obviously don't want to kill off the stage volume tone either.
In short, the green ultra is fantastic (would still prefer to shave some fizz off at lower volumes if I could), but can I use different tubes to bring the red ultra into solo boost territory and is there anything to make the red classic a tad more aggressive and brighter short of a tube screamer)?
Thanks for your patience and assistance...
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