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Help with DT25 and HD500
by cwatsn2 on 2013-02-06 10:10:44.6650

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: Help with DT25 and HD500
by geppert on 2013-02-06 11:12:42.9180

Regarding the DT25 alone .... since you are new to the amp, try this as an experiment and see how you like it ???

No HD500 connected ...... just bare bones amp.

First ... make sure your guitar is on FULL all the time, because when you back down the guitar volume you will decrease the crunch factor especially on Channel B. Just keep it up full and dial in the volume you need on the amp.

1) Use Channel A as your Clean reference ... use the Classic American Clean NFL I (ie: Fender), set the tone stack as per the template dial recipe. Class AB and Pentode. Set BOTH Channel Volume and Master Volume up FULL. Use the "Drive" level to acquire the volume you need (remember to keep guitar volume up full). With the Fender (NFL I) the Drive doesn't crunch it much at all so think of it as your volume.

2) Use Channel B for crunch. For this experiment, set it for the Class A Chime (Vox AC30) which is NFL 3 (Note tubes are set for Class A and Triode). Use the dial recipie for the tone stack except put the "Drive" at about 2 o'clock rather than 11 o'clock on the recipie (I sometimes max the drive right out). THEN, back down the Channel Volume so it is relatively equal to the Volume you have on Channel A when you switch between the two. If you have the channel volume on max for Channel B it will be WAY LOUDER than Channel A. It will probably come down to 11 0"clock or so, (remember Master Volume remains full up all the time).

Now what you have is a Clean Channel on A with volume set by the "Drive" level, and a Crunch on Channel B with the level balanced by the Channel B "Channel Volume". See if that experiment does anything positive for you?

Remember this is the DT25 alone with no HD500. Just to get you used to it's functions and gain staging between NFL's. Remember NFL I is the quietest BY FAR of the 4.

Hope this helps you in some way?

The information above may not be current, and you should direct questions to the current forum or review the manual.