This free-standing unit: http://www.mojomusicalsupply.com/item.a ... d=MOJOVERB
is interesting, in that it uses your power amp output and adds the reverb, which signal it outputs to its own speaker(s). Separate mic'ing allows you to mix wet/dry.
Does anyone have any idea how that circuit might compare to the Fender 6G15
Obviously, we are dealing with two very different inputs.
Wow, that thing looks way too much like a boombox.
Good idea, but you might as well bring along a princeton reverb or similar amp, run a line out from your amp into it and disconnect the dry signal from the reverb amp's output. This is what I do when I have the time and space, and it works great. I just throw some pedal with the battery removed between the main amp and the slave amp so that in bypass it sends the to-be-reverbed signal through, and "on" (without the battery) it cuts out. Or you could use a volume pedal and have continuous adjustment.
It looks to be a rehash of an ampeg echojet. Ive built that one.
Its a 500 ohm resistor parralel with a big non-polar or two larges uf caps with their
negative leads hooked together between the amp and the input of a verb tank.
then amplify the output of the tank. look up the ampeg echotwin, it the thing between the to amps.
feed from the FB of one to the input of another.
you can make one from spare bits for nothing if you already have two amps.
Andy Le Blanc wrote:It looks to be a rehash of an ampeg echojet...
I found that schematic, if anyone is interested.
Isn't the old Hammond reverb amp a speaker driven reverb as well It seems it would be easy to set up for a stand-alone unit with its own speaker like the Mojoverb or Echojet.
You do not have the required permissions to view the files attached to this post.
its really ghostly sounding. You can get a depth/dwell control by replaceing the
330 ohm with a 500 ohm or 1k pot. and attach ing one end of the caps to the wiper.
The value of the caps has an impact on the sound, you can go huge or small
and vary the effect, the one thing I never got around to was to try multiple
spring tanks. It does alter the sound of the amp its attached to but not bad.
In the echotwin theres another small resistor right before the reverb tank,
a 27? ohm, double check. Its not a bad unit, I think it had lamp cord with
alligator clips that you would hook to the speaker lugs in the back of an amp.
A small box that links two amps is real easy. Its not a fender type verb, its real
deep and ghosty, big sounding but not in your face as bad as some can be.
Maybe a more dick dale thing, great way to make stereo.
Andy Le Blanc wrote: ... try multiple spring tanks..
Zerotronics http://zerotronics.com/ has some interesting multi-tank units that are passive inline units. The Coolspring Classic has 4 tanks. Some of its units, like the Mini-LE use NOS springs from a Baldwin unit that must have been quite small. The OC-4 uses old OC Electronics springs, hence the limited edition. OC Electronics was started by some folks from Gibbs, IIRC.
Which style of reverb did you think sounded better: speaker driven or Fender 6G15 style?
I'm going to look for an old Hammond unit on ebay.
Its a tuff call as to which is better, every one has likes and dis-likes.
fender is fender, as for verb, its very easy to get way too much with that style.
and with the amp being a "point source" you dont hear it as a part of the room.
add ons with two speakers or amps are a differnt beasty, much more environmental.
wider field, and is a true stereo effect, which might bug the heck out of someone
who isnt used to it, has a greater element of delay, makes the room sound bigger.
the fender could be called "short" where the ampeg style would "long" or maybe even "hall".
I generally dont use verb, but I liked the "wider" add on sound, ist a bit like useing
a vibrotone add on, it can be subtle, and the added depth is nice.
I'll be looking that up 
