wow! it's cool to hear the noise it's gone! No surprise Nik lead you right to the very problem and fix.
Good to hear that Crusty!

Cool. Welcome to you "new" amp!

I'm glad to hear this! Mind that you will notice an interesting difference on volume between channels, specially at lower levels...

let us know... You will love it!

Every control keeps working the same. Even the 15/30 watts switch. The MV honestly it's no longer necessary as the VVR takes care of volume with minimal coloration of tone.

Oh sorry... I mean a TimeFactor delay pedal. This can act as a buffer as it has input/output level switches (line/amp/guitar) that vary the level incoming and coming out from the pedal. There is a always an slight high freqs cut if you a/b the straight dry signal to the amp and the dry signal having the loop connected (pedals off). But I compensate this by opening the cut control. I use the loop basically for the delay pedal, and an volume boost for solos via en ge7 moded eq.
The signal comes and goes by one stereo cable, so I am saving one cable on the setup!

Hope this helps!

or, if you are ok with using the effects loop as it is, you can do as I did:

One stereo cable that comes out of the amp's effect loop, that goes into a hammond box on the pedalboard that split's the signal into send and return. This way, you only use one cable that carries send and return to the amp. From the hammond box, the signal comes out from the tip (send on the hammond), goes to the effects (including a TF that acts as a buffer) and returns to the return on the hammond, that is the ring of the stereo cable.

Basically it is a Y splitter, but not as weak as a regular Y splitter.

Hey Bill that Green Ringer should be wicked!
I'm glad you finally installed it. I am still amazed with the results on my amp. As youd said, the 4 tube sounds incredibliy good with the VVR. Lately my JSX minicolossal "practice" amp has been given a good rest as the Dizzy is the new guy in town. I have only gigged once since the VVR, I'm looking forward to give it another shot.

I just in incorporated a clean boost to my pedalboard, to drive the drive nuts. I could have never done that without the VVR on this amp! it's an excelent adition to the od pedals I that I already use.

I notice a little hum there too, I still have to open the amp and move the cables, as Dana suggested there could be a cable near to a hum generating component. Nothing that really bothers me, anyway.

Have a nice Holydays!

Yep. I fogot to mention I still have the original EH EF86 Nik supplied. Maybe the substition of this tube may help too, some people swear by swapping it with a NOS Mullard...

Good luck

Honestly, I could never get distortion (decent) from the EF86 channel by itself. Level turned up and it had a very nice breakup area, but louder than that it just went... louder.. kind of what you explained. But messing with the MV I could get some dirty tones (not that I liked them as the best, but they were there).

After installing the VVR (Powerscalling), things changed radically... now I can even use this amp without pedals...  both channels are now overdriving really really nice. The EF86 is now giving rocking tones that may cover hardrock easily. Add a little boost and whoo!

Remember that you can use the 15 watt mode to get overdrive at lower levels. Again, with VVR installed I still preffer the 30watt mode, tone is much more round...

Good luck!

Being biased hot, I guess the use of an attenuator would eat tubes really faster than "regular", because you (he) will crank the amp and all of the tubes will wear faster. I did not try my DC30 with any attenuator, but I installed the Variable Voltage Regulator and it's been a winner since.  I posted about on this same forum. Maybe it is a good (and not expensive) way to try for you guys.

It basically reduces the voltage on the whole amp, allowing you to get crunch tones at lower levels (it reduces at 10% the amp full power). To me, it opened a whole new unexplored stage of this amp....

Regards

Well, this is the layout I made for myself as I understood what Nik and Dana were telling me about the installation of the VVR controlling the whole amp. It is based on Nik's original layout of my amp.  Basically the VVR goes after 1st filter cap and before output transformer. Also, the VVR goes before the choke, as you can see it on the layout. A 1meg resistor and a 0.1uf cap were added before pin #2 on the 1st and 2nd preamp valves (12ax7). The 1meg resistor on the input jack can be used for the 1st valve, Dana recommends, just moving it.
If you plan to do this, please reffer to Dana's instructions and maybe comment it to Nik, as you can have good assistance.



Good luck!

This is the link to Hall Amplification. Dana will send you enough info, and answer your questions

http://hallamplification.com/main.html?src=%2F#2,2

Yeah, this works incredibly good. I don't how the DC30 would sound with an conventional attenuator as I never tried it. But I don't see the need at all. This is  something to consider on every amp, its a shame not being able to crank an amp to get this unique tones!

Well, finally we did the instalation of the VVR on the DC30. We did the whole amp scalling.
BTW thanks to all who shared info on this forum about this one! Nik was a lot of help too, as usual!
As a rookie, I needed some help to descipher Dana's installation intructions...
At the end, the instalation seemed simple, but we did not want to blow anything on the way!

This VVR is amazing, I have never had the chance to crank the EF86 channel on band practice. I did all of my gain tones with pedals. Last saturday that I tested it with one band, it really shone! Finally this organic lovely distorted tone without loosing definition at any volume. The amp, is a whole new animal, this works real good if you want to push the amp wihtout blowing your (or your neighbors) ears...
The TopBoost channel did great tones too, thou the difference on volume between the 2 channels was more noticeable when scalled. Great tones too, anyway....

I a/b it with the original MV (we left it there, just in case), and definedly the VVR is a winner when taming the beast without tone lose... the MV, as well known tends to suck bass freqs. The VVR respects the tonal integrity of your sound... even when in minimum (10% of the amps total power). Last night I was practicing at bedroom levels, and it was a great tone.

Just wanted to share, this is a great mod IMO...
Cheers!