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New to tube amps and DT25...need some pointers
by cwatsn2 on 2013-02-06 06:51:22

Hello everyone

I just recently bought a DT25 to go along with my new HD500 and am trying to get thru the learning curve with both.  I am getting more and more comfortable with the 500 but I am new to tube amps, so some of my question will probably be sound ignorant.

One thing I do not understand is the FX loop and how it relates to the devices.  I want to be able to switch from the 500 tone(CH A) to the DT amp(CH B) but my effects (Delay, Reverb, Flanger, ect) sound completely out of wack on CH B.  I know this is a FX loop issue, right?

Honestly, I have no idea how to use the FX Loop effect on the 500, I see it in the drop down box and have always wondered how and when to use it.  I think I understand that the when connected thru L6 the DT's FX loop is behind the 500's mixer.

So, I my question is how do set up the DT/500 to switch from your CH A (500 tone and effects) to the CH B (DT tone) where the effect sound the same.  Or is this even possible?

With the DT by itself...I know that the GAIN knob powers the preamp stage of the amp, and the VOLUME powers the power amp tubes.  Correct?  So does the MASTER have any effect on the tubes?

For the best sound do I crank up the VOLUME to get the tubes up and use the MASTER to control Db's?  What about when the 500 is connected?  (I know this cancels out the MASTER on the 500)

At LVM I can get some nice tones with the DT alone, but I can't seem to find a sweet spot with it in HVM (have turned it up as much as I can bear in the bedroom).  Any tips?

Any help at all with any of these issues would be greatly appreciated.  Like I said before I am new to alot of this but want very much to learn and understand.



Re: New to tube amps and DT25...need some pointers
by Rowbi on 2013-02-06 12:42:22

I think perhaps you are over thinking it.

With the pod connected, you have many preset locations so there's no reason you should need to use channel b on the amp.  Just switch presets on the pod to change your tone.  Use Pre amp sims on the pod with cab sims too, and you'll be good to go.  Use the fx loop on the pod I you like, an it will always work this way.

The gain and channel vol (on the amp or pod) are like the gain and channel volume on an amp channel, master vol to set overall level.  E.g. You set the distortion with the gain, the overall vol with master vol, and then balance the vol between presets/channels.  That's how I do it.

Hope this helps

Rowbi



Re: New to tube amps and DT25...need some pointers
by greghall on 2013-02-07 01:39:58

I want to be able to switch from the 500 tone(CH A) to the DT amp(CH B) but my effects (Delay, Reverb, Flanger, ect) sound completely out of wack on CH B.  I know this is a FX loop issue, right?

Are you connecting the HD500 to the DT with L6 Link or the effects loop / 4CM?

If using the L6 Link, when you switch to CH B, the DT pre-amp model is used, which is after any effects active in the HD. This means that any effects placed after the amp model in the HD500 (i.e. CH A) are moved to before the CH B amp model, which can sound quite different. Rowbi's advice is good - just use the HD amp models to avoid this situation.

If you are using the effects loop - try the L6 Link!

With the DT by itself...I know that the GAIN knob powers the preamp stage of the amp, and the VOLUME powers the power amp tubes.  Correct?  So does the MASTER have any effect on the tubes?

This is not quite right. The MASTER on the DT does not work the same as on the HD, it regulates the power going into the power amp / tubes, and has a big effect on your tone. The GAIN adjusts the amount of 'drive' in the pre-amp model, and the CHANNEL VOLUME adjusts the 'level' of the pre-amp model. The level going into the power amp does have some effect on the tone but not as much as the MASTER volume.

For balancing volume between patches, set the MASTER quite high (around 2 o'clock works for me) and then use the channel VOLUME to even out your levels.

For the best sound do I crank up the VOLUME to get the tubes up and use the MASTER to control Db's? 

It's a combination of both, and the amp needs to run with a reasonably high volume to sound good - it generally won't sound great at bedroom levels.

At LVM I can get some nice tones with the DT alone, but I can't seem to find a sweet spot with it in HVM (have turned it up as much as I can bear in the bedroom).  Any tips?

It's a tube amp, and tubes need power / volume going through them to make them sound 'sweet'.

(by the way - generally you should use 'pre-amp' versions of the amp models in HVM and 'full' versions in LVM).

One trick you can use to get the tubes working harder at a lower volume is to set the amp clean, i.e. to topology 1, class A, triode (which is the lowest power analogue setting), turn the master volume up high, and then use a full amp model or a pre-amp model with an overdrive / distortion effect to get more drive. This doesn't drive the speaker as much, but you can get some reasonably good 'bedroom level' results.

I usually just play through the HD at home (through a powered monitor or headphones) and use the DT for live performance. Once you get used to how good the DT sounds, LVM just doesn't seem to compare - for me anyway.

Kind Regards

Greg



Re: New to tube amps and DT25...need some pointers
by cwatsn2 on 2013-02-11 09:36:04

Hey thanks everybody that responded.  A few more days under my belt and I am discovering things due to you suggestions.

One thing I definately have decided.  For me, in LVM, full amp models sound much better than preamp.



Re: New to tube amps and DT25...need some pointers
by Hummelong on 2013-02-12 13:06:48

I've had my DT-25 for almost a year now...for the first 6 months, I was using FULL models in my HD400, and the master volume around 12:00 which was the right level for playing with the band.  After reading here on the forum that I  "should be"  using the PRE models and turning up my master volume,  I dug out my old Tom Scholz Power Soak so I could crank the master but keep the volume down with the band.  I've been using it that way for the last 4 months.

While the tones are pretty close (FULL vs PRE)  I have come to the conclusion that I like the tones better the way I was doing it at the beginning.  I'm torn because I really WANT it to sound better using the real power tube crunch, but it just doesn't feel quite as good to me.

I think I'm going to go back to using the FULL models in HVM and back down on the master a bit.  Maybe that way I can get the best of both worlds!

Mike




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