Hoffman Revibe. Shell comes later. LOTS of stuff in this bugger. The "harmonic vibrato" is to die for.

steven

Sweet.. but why r u using PowerConn?

Zitat von: bluesfreak am Aug 26, 2012, 10:43
Sweet.. but why r u using PowerConn?

Because:
1) I hate cutting rectangular holes
2) I don't like the cord going through a grommet and hanging on solder connections in the chassis
3) who's going to steal a powercon? Nobody knows what they are.

I use them on anything that doesn't already have an IEC.

steven

A quickly done demo, recorded with an iPhone:

http://www.youtube.com/watch?v=BhgahrzAjdU

brillant sounding!

So you don´t need the 6G15 standalone unit anymore.
How did you solve the pan suspension issue an what pan did you use?

LöD

Es war immer mein Plan ein Revibe zu bauen; der Trem war mir wichtiger als Reverb.

Ich habe den Accutronics 9ab3c1b benutzt (ich habe kein C gefunden). Ich montiere es wie bei meinem Twin-head - auf Grommets.

Steven

Hi!
Cool device, Steven. 

Ist das Magnatone Vib noch mal anders?
Oder musst Du noch EINS bauen?
Just asking. 

Ciao
Martin

3 springs pan? isn´t that way too much reverb and getting muddy when cranked?
in your video it sounds very good better than i´d expect from a cranked 3 spring unit.

is it a nos accutronics or current production?

i had a 3 spring pan in my kinda super reverb amp. it was too much dark sounding reverb. so I changed it to a two sprin pan, now it´s clearer more open sounding, like it better.

and the vibrato sound is superb! maybe i will also have to build one of these sometime...

last question: how is the signal routed in the revibe? reverb first and then vibrato?

LöD

Klingt wirklich super, sag mal verkauft Hoffmann einen Bausatz oder nur die Boards und man muß sich das selbst zusammensuchen, ich finde die Website etwas unübersichtlich.

@Martin -

yup, Maggie Vibe is completely different, it uses varistors and phase effects to produce a real vibe. The "Harmonic Vibrato" is still a trem, though a complicated one. I've looked into building a Maggie vibe, but never got around to it. I found some of the varistors a few weeks ago for $130/4, but wasn't willing to spend the cash.

@LöD -

Current production Accutronics (Korea). Remember there is a big difference between Fender amp reverb and standalone - the standalone is driving the reverb pan with a 6[VK]6, and there's much more signal to shape (throw away) with the dwell and tone controls. If I have time, I want to do a new video that shows the difference between 2 and 3-spring reverb,  between standalone and amp reverb with the same tank, and between bias-vary and "harmonic vibrato."

The schematic is on the Weber site https://taweber.powweb.com/store/kits_weber.htm#5H15T, he calls it a 5H15T ToreT revibe, I think. Two parallel signal paths. The mix control only mixes straight and reverb; it does not affect the vibrato.

@bazookajoe -

no kits from Hoffman, only the board (without turrets). Weber sells a kit, but it has a normal eyelet board, not the turret board. That may be an advantage in this case, because the filter caps fit on Weber's board, but don't on Hoffman's. I had to be creative with the cap placement. I wanted to use a doghouse, but nobody carries the small doghouse. Worms has it in their catalog, but nothing in stock. Fender doesn't list it as a part anymore, though they use it on the DR.

The Hoffman info is on the "library" page - http://www.el34world.com/schematics.htm#Hoffman%20Board%20kit%20information. - it is the last entry under "Hoffman Board Information." There he describes how it came about, asking Weber to do a custom chassis for him, and how Tore T fixed the hum.

I am building a second Revibe; am looking for a better solution for the caps.

steven

So, die Cabs sind fertig. Hier ist meine, die erste Mal mit tweed, und ich habe ein fundamental Fehler gemacht (2te cab ist richtig) bin aber zufrieden - bin kein Tweed-Virgin mehr. Die Revibe mit den korrekt Tweed (#2) geht in die Staaten.

Fichte; Halb-blind Schwalbenschwanz; Tweed; Lack: basta.

steven

uuuuaaaahh! sieht sehr gut aus!
Gratulation
LöD

Sehr schön!  :topjob:

BTW: kommt diese dunkle Stelle in der rechten Ecke unten von der Frontbespannung?

Gruß

Jacob

Zitat von: jacob am Sep 20, 2012, 10:59
Sehr schön!  :topjob:

BTW: kommt diese dunkle Stelle in der rechten Ecke unten von der Frontbespannung?

Gruß

Jacob

yup. muss es nachbearbeiten.

Hi Stevo!

Es ist schön.
Warum verwendet keiner als single Tube Reverb ne ECL82? Eine Triode mit genug Gain und eine Pentode für paar Watt.  Eigentlich naheliegend. Als Halltrafo ginge sogar dann ein 100V Übertrager mit mehreren Übertragungsverhältnissen oder einer der Hammonds SE für wenig Watt.

Beim Ansteuern von Hallspiralen vermute ich mal, dass STROM gegen SPANNUNG gewinnt. Kann nix schaden, da mal etwas Leistung in die Spiralen reinzuschicken.

Ciao
Martin