Reverb Reboxing

[Donner]

if you have wanted a reverb on your board the same size as your BJFE peds - the Holy Grail reverb can be squeezed into the same size box......

heres a video tour of the box inside too..
http://www.youtube.com/watch?v=g-uyiv_ju1I

[TheWarmth]

Cool, Don! How much do these cost? Do we have to send you a Holy Grail or can we just by this version direct?

[Donner]

Oh... No Im not doing these - this is a SUGGESTION only.

I made the box and BJ did the Rebox ( and isnt doing anymore dont ask ) and he said it was ok to show it as there is no plan for an MP Reverb anytime soon so ~~~~~~ have at it

[thiscalltoarms]

hmmm, Donner, are you using a dedicated wallwort for this, or a PP2 out?? or what? i'm working on it. but its my first DIY so we'll keep our fingers crossed


thanks for posting this man!

[Donner]

Yeah I use the adapter that came with my ToneCore - its 9v but adds no noise....

[BJF]

Hi,

Ah cool videeo Don!
Here's a post I made on another forum.

If this is a first project it should be noncritical just mark all wires that needs to be disconnected.
Oh and I used the square plastic Switchcrafts to allow pcb to rest on those and then a sticky neoprane to the solderside cut to the size of the pcb that effectively prevents shorts.

It takes a bit of measuring to get all parts in position to allow the pcb to fold neatly into the box but that's only a bit of planning.

Good luck and have fun:

Rehousing an EH Holy Grail:

This idea came to me as there are a couple of professional guitarists around here that use the EH Holy Grail
and I got one of those guys pedal bord in for service and his Holy Grail had been serviced 5 times for various mechanical faults and the guy said he'd finally given up on it and must find another reverb pedal.

Hm, well the construction has a couple of weak points that one could address:
Potentiometer holds the pcb.
Power is brought with an AC adapter that leaves unregulated voltage and can at start up break a 47R resistor with it removing power from the reverb circuit.
Input- and output- and DC jacks make the contact to ground but none of those have locking washers and metal sides of the case is a bit to thin to hold the jacks firmly without locking washers.

Now measuring the pcb it would fit into a small hammond box with the regulator and crystal facing the top of the case if pot is removed and connected via wires, which then ofcourse removes the weak point of the pot. I choose an Alps RK-09 and mounted that with a locking washer
and found a tooggle switch that would fit next to the pot and have a height over pedal surface the same as the pot with a knob mounted and finally DC jack replaced with a 2,1 mm Marushin chassis mount jack

The 47R resistor was replaced with a 1N4002 diode giving about the same voltage drop but now protecting against false polarity.

To make all fit input and output and DC jacks were placed near the bottom of the case and the pcb folded in neoprane so it can absorb vibrations and then locking washers on all mechanical parts connecting to case makes the finished unit durable and all parts fixed in position.

To address the heat and possible thermal shutdown a new powersupply of stabilized 9V 300mA was included.
It is possible to power the EH Holy Grail from the Voodoo Labs PP2+ using output 5 or 6 as available current is then about 200mA when set for 9V's-using anyother output shuts down the internal regulator.

About a year later neither of the two units rehoused to go on pedal boards have required any service just a nice reverb.

In fact I rehoused one such EH for my personal use the other day and would say I am happy with the sound that gives.

Unfortunately I do not have provisions for taking photoes and posting them but hopefully enough information is supplied in the text for anyone who'd like to try this

Have fun
BJ

[Teahead]

Very nice, trippy box Donner!

Do tell, what be the blue (reboxed?) "Digital" pedal to the right of the Holy Grail as one views the video?

[Donner]

Very nice, trippy box Donner!

Do tell, what be the blue (reboxed?) "Digital" pedal to the right of the Holy Grail as one views the video?

oh thats "Donners Digital Delay' a precursor to t he DBD - the DBD into the HG Reverb is just perfect. It sounds just like being in a big room where you hear more of a swell in the verb than an distinct Repeat, ... I hate to say it but the Grail was a big missing piece for me.

[Donner]

anyone try this ???

Im still amazed at how much I like t his --- its almost better than using a delay in the Hall setting......

[thiscalltoarms]

i'm working on it still. took me forever to find parts! i'm a dyi / reboxing noob!