The linked pages give further detail of controls, circuitry and components of Gibson EB3 bass guitars circa 1961-79.
Gibson EB-3 controls
EB3 controls (1978) - What the varitone and four pots actually do. This sheet, produced by Gibson in the late 1970s, describes the operation of an EB3 with series 2 circuitry (see below). The varitone switch is wired back to front from 1960s and early 1970s versions (series 1) of this bass.
Gibson EB-3 part lists
EB3 parts list (1965, 1971, 1977, 1981) - Components (electrical and hardware) used in the manufacture of the EB3 bass guitars - listed with part numbers.
EB-3 circuitry
Series 1 - 1961-1971
Series 1 looms are characterised by the large rectangular metal tone choke, part GA-90C-1.
Gibson EB3 circuit schematics series 1 - Wiring diagram appropriate to earlier EB3 basses (1961-1971).
Circuit images 1 - A look at the earlier (wide-spaced) wiring loom fitted to all EB3 basses circa 1961-65.
Circuit images 2 - A look at the mid period (narrow-spaced, with input jack on the body front) wiring loom in a late 1960s EB3 - relevant to non-slotted-headstock basses produced between 1965 and 1969.
Circuit images 3 - This loom is very similar to the loom above, though with a side mounted jack - as seen on all slotted headstock EB3 basses, circa 1969-71.
Series 2 - 1972-1970
Series 1 looms are characterised by the smaller cylindrical black cloth-wound choke.
Gibson EB3 circuit schematics series 2 - Wiring diagram appropriate to later period EB3s (1972-1979).
Circuit images 4 - The 1972-79 EB3 loom again had a front-mounted input jack, but the smaller tone choke, also used in the Gibson Ripper.
The EB3 was listed as using the following potentiometers - whilst broadly correct, in some cases alternatives may have been fitted.
Gibson EB3 bass for sale
1972 Gibson EB-3L-W Bass
Indianapolis, Indiana, 462**, UNITED STATES OF AMERICA
$1350
The "L" stands for Long Scale, as this EB-3 has a 34 5" scale length and the ??W?? stands for the Walut finish
The EB-3 line of basses from Gibson was introduced in 1961, while the Long Scaled EB-3L was later introduced in '67 / 68. The earlier models of the EB-3L had a slotted headstock design. This bass has the normal Gibson headstock design. The bass would have originally had a mute and bridge cover, but that is no longer with the bass ... more
1970 Gibson USA EB-3 slotted headstock Bass Husk
Chesapeake, Virginia, 233**, UNITED STATES OF AMERICA
$599
... more
1970 Gibson EB-3 Slotted Headstock Vintage Short Scale SG Bass
Chesapeake, Virginia, 233**, UNITED STATES OF AMERICA
$999
... more
Gibson 70s EB-3 WALNUT Used Electric Bass
Union, New Hampshire, 038**, UNITED STATES OF AMERICA
$1275
1969 Gibson EB-3 Cherry
Antioch, Tennessee, 370**, UNITED STATES OF AMERICA
$3199
1961 Gibson EB-3 the cleanest original extent w / hang tags 1 of a kind & Minty !
Fort Lauderdale, Florida, 333**, UNITED STATES OF AMERICA
$11495
1969 Gibson EB3 Bass Guitar- 100% Original with Original Case
Glastonbury, Connecticut, 060**, UNITED STATES OF AMERICA
$3700
Gibson EB-3 Cherry Mod 1969 Electric Bass Guitar Original Case Slotted Head Art
El Segundo, California, 902**, UNITED STATES OF AMERICA
$3500
... more
GIBSON EB3 BASS GUITAR
Immingham, DN40***, UNITED KINGDOM
£1078
Basso Elettrico Gibson SG Bass Faded (Diavoletto) EB3
Casa Santopoli, 89***, ITALY
€950
Buone condizioni, normali segni di utilizzo sulla finitura faded
Perfettamente funzionante. Corde nuove Roundwound
Custodia morbida Gibson originale
... more
Gibson USA EB3 Vintage Bass Guitar Circa 1972, plays & sounds superb
Hull, HU7***, UNITED KINGDOM
£1450
1971 GIBSON EB 3 SLOTTED HEADSTOCK BASS CASE - Made in USA
COLOGNE, GERMANY
£385
* CASE ONLY !
* interior has stains
* tolex has rips
* all latches are working fine
* worn but solid
* check all pics
... more
Gibson EB 3 CASE 1971 - passend für NUR GESCHLITZTE SPINDELSTOCK-Version
COLOGNE, GERMANY
£399
* CASE ONLY !
* strap that holds case open=GONE
* bottom and top are loose =need reglueing
* tolex has rips
* all latches are working fine
* check all pics
* SOLD AS IS - NO RETURNS... more
1971 GIBSON EB 3 SLOTTED HEADSTOCK BASS CASE - made in USA
COLOGNE, GERMANY
€439
* CASE ONLY !
* interior has stains
* tolex has rips
* all latches are working fine
* worn but solid
* check all pics
PLENTY of PARTS for SALE
ATTENTION! OVER 1000 more
GUITARS-BASSES-AMPS-PARTS
in our OTHER AUCTIONS !!!
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... more
Gibson EB-3 Bass Guitar 1967
Horncastle, LN9***, UNITED KINGDOM
£3010
1971 GIBSON EB 3 SLOTTED HEADSTOCK BASS CASE - made in USA
COLOGNE, GERMANY
€444
* CASE ONLY !
* strap that holds case open=GONE
* bottom and top are loose =need reglueing
* tolex has rips
* all latches are working fine
* check all pics
Over 1000 more
GUITARS-BASSES-PARTS in our OTHER
AUCTIONS !!!!
TAKE A LOOK !!!... more
1965 Gibson EB-3 Bass Guitar
Farnham, GU10***, UNITED KINGDOM
£3062
The EB-3, widely known as the classic Cream bass, was used and made most famous by Jack Bruce from blues-rock pioneers 'Cream' around 1967 onwards. He had a few of them over that time period, but his main and most photographed instrument was a matching '65. The spacing between the control knobs was changed in 1965 to match the guitar line, so only a percentage... more
Do you have (or know where I can find) any diagrams for modifications to this circuit. Is there a record of the Jack Bruce mod? Thanks, great site by the way




















