SDG Vintage Amps Vibroverb Style 115 Combo

64 VIBROVERB SPECS/MODS/INFO

15" ORIGINAL JBL D130F Alnico speaker re-coned by Weber, has aluminum dustcap

Weber Beam Blocker (The Beam Blocker is a simple device that is installed between the speaker and the baffle. The dome shaped diffuser prevents point-source high frequencies from beaming directly out of the cabinet to create that ice pick sound. Instead, they are diffused evenly in all directions to blend with the lower frequencies which tend to radiate in a wider pattern. The Beam Blocker allows you to make use of speakers that have a tendency to be beamy, harsh, or generally unusable due to their extreme high frequency response. The idea of using a diffuser is not new. Many performers including SRV were known to have applied a patch of duct tape on the grill cloth directly inline with the center of the speaker to block the beaminess. The Beam Blocker performs that same function while diffusing the high frequencies evenly in all directions.)

Solid finger jointed pine Mojo cabinet

Point to Point hand wired

Special Solid State/Tube Rectifier Switch

It has self adjustable bias

Bias is set on the hot side at 38 mpa

Installed Mercury Magnetics Bassman Output Transformer.More headroom, More power and less susceptible to blowing. Takes away ratty sound.

Tremelo is disconnected (has effect of unloading the guitar's signal and therefore producing a fatter, more edgy sound)

Coupling capacitors changed from .042 cap to a .047 cap. Tone is in the Preamp. .047 is more of Midrange. .1 is more Bass.

Bright Switch Capacitor changed from 150 pf to 250 pf (less harsh sounding, more of a midrange boost)

TAD blackplate RCA 6L6 Power tubes (Best sounding current production tubes availble)

NOS GE Preamp tubes, 5751 in V2 & 12AX7's

Input Resistor changed from 68k to 100k so there wouldn't be so much input signal going into the tubes. Faster saturation at lower volume. Dosen't create the high spikes caused by heavier strings & attack going into the input section.

Used 25uf/50v vs the old Fender 25uf/25v value

Fender choke

3/4-inch plywood baffle board

Bass, Mid, & Treble controls usually set at 5,6, & 7, Rene Martinez told me over the phone one day that Stevie always set the tone controls one increment apart ascending like that. Volume at studio usually 4, on stage around 6.


V1 tube removed

Acutronics reverb tank in tolex bag.
Vintage reproduction reverb cables.
Reproduction vibroverb face plate identical to original.
Orange Drop Caps, Sprague Atom electrolytic caps.

see my website for more info on gear i use with this amp. www.romeorose.com

Haven't had it long, but know it's built like a tank as are all amps of this type.

Steve is a great amp builder as well as a great person. I don't expect any problems, because this is a top quality product. In fact I have never, ever ever, written a review about any product until this review, but this amp sounds so good, so much better than the reissue stuff or the vintage stuff (vintage without mods)I just had to spread the word on this awesome amp!

this is much better than the reissue stuff i've had from fender before, better parts, better tone, and suprisingly better price!