Thanks Erwin.

Yes thats how I did my IEC holes but because the rack chassis was Aluminium my jigsaw bent it around a bit. I was using the finest blade I had with no pendulum action to the cutting.

It doesn't like my Hotplate. This affects the amp more than it does the OTS. Without it the amp is alive, a small amount of hiss when turned up but nothing too problematic.

Very nice tones esp the EF86, but both channels are really nice. I don't like the master volume though, I think that will have to go as soon as the power scaling is fitted.

One problem, and it might be related to the fact the amp was out of a cab and sat in front of the speaker cab, microphonics when the volume got to 3:00 (EF86 channel naturally). I have got the two rings on the valve but I think I will need to investigate further and maybe try a different valve in there. That was loud though, but nevertheless it needs sorting.

I'm going to burn it in tomorrow and see if anything changes.

I was hoping to hear no difference at all, being as I have just completed my DC-30 build (its with my tech now getting tested and powered up), but unfortunately that was not the case. The last clip was the clincher.

Yes.

I think the BBE will do something very different to the K. It does seem (the BBE) to do more than just add lows and highs.


I think I'll adopt the same policy, forget the presets.


That was where the original DPDT switch was to go, it was too tall to get it into the rack so I had to make a cut out and my jigsaw just pulled it all over the place. The new bypass switch is much smaller and I wouldn't need to make this cut out. I guess a machine shop would be able to make the IEC cutouts quickly and neatly, but I was in a hurry to get it made!! I did mean a nibbler not a nipper btw, a nibbler is a (usually compressed air powered) tool that does pretty much what it says, it nibbles away at thin metal, allows you to make complicated cut out shapes.

Now I've not really had chance to try this out at rehearsal/gig yet. I not losing any tone at all set as it is and I will try lowering it, but the red input lights only come on very rarely set at 3:00 . If you're not using a Klein or similar you will lose tone due to the volume loss caused by the G#. I tried it previously before I built the Klein and it sucked tone badly. When I coupled it with a BBE Max X2 (a crossover from my PA, outputs recombined) using the gain of the MaxX2 helped a lot, but it still lost something.


The Klein is the first in the 'chain', though its not really a chain as the Klein provides a sub-loop to the amps loop. I suppose you could put it in the line with other effects but thats not the way it was intended. Imagine the Klein as a replacement for  a 12at7 plus send and return controls on a more modern amp.

The effect of the Klein is very subtle, transparent, and it might be less so if I crank it, I'm not sure yet, but it certainly does the tone no harm and I have tried it with nothing at all in the Kleins FX loop. The BBe is much less subtle, you can hear it immediately you push the bypass button, and with the settings I have I get a clearer enhanced bass and a little more in the top end, but like you if I take it over 10:00 the highs get to be too much.

In as much as it makes the G# work as it should, yes the Klein does its job well. At the moment I'm not sure whether the BBE will stay, we'll see after I've gigged it. The G# I am struggling with, the lack of feedback from the display to tell you what each patch has applied is the biggest negative for me, I'm going to need a laminated card with my presets printed on!!!. Just not good enough in this day and age I'm afraid. I can see me having to u/g to another unit or only use 2 or 3 presets. The FX are good though its just deficient in the usability stakes,

The main reason I wanted the rack unit was simplicity of operation,  tidyness and I wanted to be able to hardbypass to get back to raw amp tone if needed. I also didn't want a box on top of the amp, along with the G# balanced precariously somewhere, plus a 9v supply, and 4 cables, etc etc. Having since tried the TC Nova reverb as demoed by John Edmonds I think if I had tried this first I might not have bothered with the rack unit, but now I've got it I'm going to use it, plus I can have a whole range of good delays and reverbs and a decent chorus.

As soon as I get the layout drawing modded I'll post it here so if you want to build one its pretty straight forward. Indeed the most difficult bit was cutting out for the IEC sockets, I really need a nibbler of some sort. Also when i finish building the 2x12 to match the OTS I'll get a pic of the whole rig aswell.

Hi John, yes I am running both G# and Sonic Max together, unfortunately it was going to prove way too difficult to isolate and footswitch them independantly.

I've got the input gain on the G# set at 3 o'clock, the I set the Klein Send and return both at 2 o'clock and recovery at 3 o'clock. Bright 2 on. Both bright switches on is too much.

Sonic maximiser Lo Contour 3 o'clock and Process 10 o'clock.

Footswitching bypasses all 3, the K, G# and the Sonic Max. It might have been a nice option to footswitch the effects leaving the Klein in the circuit at all times, but I thought that was a little risky being as I built it!! If something fails the hardbypass switch on the back takes everything out of circuit leaving me with the raw amp with about 2-3 foot of cable in the FX loop.

Finally completed the rebuild with two relays and now it ROCKS. No loss of volume or tone, this is how I should have done it in the first place.

Any loss of 240v or 9v in the Kleinulator results in a true bypass, with an almost inaudible switch over. Footswitching works as it should. Really pleased with the way it behaves now. I've completed the rack box with a G# and a BBE 362 and the FX sound is BIG. Will post a layout dwg as soon as I have completed it and pics of the unit as soon as I can take some in good light.

Yes, whenever I have had the chance to compare a 4 tuber with the same amp with two switched out, the tone of 4 is better. So Get the 100 watt, it has a half power switch to switch out two of the tubes anyway.

Take some pics. We all chat with him but we never see him! Have a sneeky look to see what he's working on.

Get the amp with the clean you like, then pedal it to get the O/D or crunch.

Me too, and to hear what the differences are. I wonder who'll get one first?

All completed now. Its gone off to my tech who'll power it up and test it for me. I can't wait to get it fired up. Must remember to give it a good burn in period.

I really want to hear this.

Anyone know what the differences are? The layout isn't available yet. External pics look just like a regular HRM.

Have you tried moving the tubes in their sockets whilst the amp is producing that noise? Other than that I guess you'll have to try chopsticking various components/connections whilst its on (don't do this unless you're sure about what you're doing). However if you say its unaffected my the master volume, and the other controls have no effect either, then, start from the speaker and work backwards.