Ibanez TMB30
Unofficial Specifications And Reference Guide
Index
Introduction
Specifications and Diagrams
General
Neck
Bridge
Pickups
Tuners
Strings
Wiring / Controls
Drop-In Replacements
Compatible Strings
Introduction
The Ibanez TMB30 is a solid body 4 string electric bass guitar with passive P and J pickups. Production began Nov 2015. The TMB30 is manufactured in Indonesia.
These specifications were obtained from the following sources:
- Ibanez TMB30 website
- Ibanez Parts Catalog
- Measurements taken by me from my Indonesian TMB30 manufactured Feb 2022
- Various internet forum posts
All part numbers are Ibanez numbers unless otherwise noted. Ibanez part number suffix CH = Chrome, BK = Black.
This website is not affiliated with Ibanez or Hoshino (U.S.A.) Inc. These specifications are subject to change and may not be accurate.
Please email additions, corrections and suggestions to kevin@kevinsworkbench.com
General
| Model | TMB30 |
| Scale | 30” (762mm) |
| Overall Length (Including Strap Button) | 41.4" (1051mm) |
| Overall Width | 13" (330mm) |
| Body Thickness | 1.6" (40.6mm) |
| Weight (Approximate) | 8 lbs ± 0.5 lbs |
| Wood Type (Body) | Poplar |
| Wood Type (Neck) | Maple |
| Wood Type (Fretboard) | Jatoba |
| Strap Button Model | 4EP1C2C |
| Pickguard Model | 4PG1PC0018 |
| Pickguard Type | 3 Ply |
| Pickguard Thickness | 0.09" (2.2mm) |
| Pickguard Width | 8.5" (216mm) |
| Pickguard Height | 10" (254mm) |
| Pickguard Screw Type | #4-24 / M3 (unverified), Oval Head, Phillips, AB Point |
| Pickguard Screw Nominal Thread Diameter | 0.117" (3mm) |
| Pickguard Screws Total Length (Including Head) | 0.5" (13mm) |
| Pickguard Screws Head Diameter | 0.23" (5.5mm) |
| Strap Button Screw Type | #8, M4 (unverified), Oval Head, Phillips, AB Point |
| Strap Button Screw Nominal Thread Diameter | 0.16" (4mm) |
| Strap Button Screws Total Length (Including Head) | 1.1" (28mm) |
| Strap Button Screws Head Diameter | 0.3" (7.5mm) |
| Paint Color (Ivory) | PPG: Sawdust Benjamin Moore: Sundress Hex: #fbe4af (unverified) |
PPG Sawdust is the closest matching paint I've found, but it's not an exact match. Please contact me if you've had the paint matched.
I believe Ibanez uses metric screws, however, Imperial sizes are close enough to generally be acceptable replacements.
Neck
| Neck Name | TMB4 |
| Neck Model | 1NK1PC0365-BK |
| Frets (Number) | 20 |
| Fret Size | Medium |
| Neck Radius | 9.45” (240mm) |
| Width At Nut | 1.61” (41mm) |
| Width At Body / 20th Fret | 2.44” (62mm) |
| Thickness At 1st Fret | 0.85” (21.5mm) |
| Thickness At 12th Fret | 0.97” (24.5mm) |
| Nut Model | 4N4132401R-PIV 4NT1MC0006 (discontinued) |
| Nut Width | 1 5/8" (41mm) |
| Nut Height | 3/16" (4.8mm) |
| Nut Thickness | 1/8" (3.3mm) |
| Neck Screw Bushing | 4NSB1450-BK |
| Inlay Shape | Dot |
| Inlay Diameter | 0.24" (6mm) |
| Inlay Color | White(ish) |
| Truss Rod Wrench Size | 4mm |
| Tuning Machine Hole Diameter (Ferrule Insert Outer Diameter) |
11/16" (17.5mm) |
| Tuning Machine Ferrule Insert Inner Diameter | 0.55" (14mm) |
The factory supplied truss rod hex key / Allen wrench measures 3.93mm.
Bridge
Note: Ibanez has used two different bridges on the TMBs. They are not interchangeable.
| Bridge Name | B10 |
| Bridge Model | Newer Style: 2BB14-CH Older Style: 2BB1PCA001 |
| Mounting Holes (Quanity) | Newer Style: 6 (4 / 2) Older Style: 5 |
| Mounting Hole Spacing | Newer Style: 0.75" (19mm) / 2.12" (53.8mm) Older Style: 17.5mm |
| Intonation Screw | Newer Style: M3-0.50mm Older Style: |
| Saddle Height Screw Wrench Size | Newer Style: 2mm Older Style: 1.5mm |
Pickups
| P Pickup Name (Neck) | Dynamix P |
| P Pickup Model (Neck) | 3PUDXPP0-FBN |
| J Pickup Name (Bride) | Dynamix J |
| J Pickup Model (Bride) | 3PUDXJEJ0-FBN |
| P Length | 1.1" (27.9mm) |
| P Width (side to side) | 2.25" (57.3mm) |
| P Width (with mounts) | 2.63' (66.8mm) |
| P Height | |
| J Width (side to side) | 3.65" (92.6mm) |
| J Length (with mounts) | 1.12" (28.5mm) |
| J Length | 0.78" (19.8mm) |
| J Height | |
| J Cavity Width | 3.75" (95mm) |
| 12th Fret to P1 Distance | 9.75" (248mm) |
| 12th Fret to P2 Distance | 10.88" (276mm) |
| 12th Fret to J Distance | 13.13" (334mm) |
The 12th fret to pickup distance is measured from the fret wire to the center of the pickup. The 12th fret is just an arbitrary reference point.
Tuning Machines
| Tuning Machine Model | 2MM0034L, 2MM0034R |
| Tuning Machine Weight (Each) | 3.0 oz (85g) |
| Tuning Machine Shaft Diameter | 0.55 in (13.9mm) |
| Tuning Machine Mounting Screw Thread Diameter | 0.1" (2.5mm) |
| Tuning Machine Mounting Screw Thread Length | 0.4" (10.2mm) |
| Tuning Machine Mounting Screw Overall Length | 0.5" (12.7mm) |
The factory tuning machine shaft diameter is 13.9mm. The ferrule insert inner diameter is 14mm and the headstock hole diameter (ferrule insert outer diameter) is 17.5mm.
Strings
| String Spacing | 0.75” (19mm) |
| String Gauge (Factory) | 0.045 – 0.065 – 0.085 – 0.105 |
| Bridge to Tuner Shaft (E) | 33.5" (851mm) |
| Bridge to Tuner Shaft (A) | 35.5" (902mm) |
| Bridge to Tuner Shaft (D) | 37" (940mm) |
| Bridge to Tuner Shaft (G) | 33.75" (857mm) |
| String Retainer Model | 4TH1MC0001 |
The "Bridge to Tuner Shaft" length may be used to determine the maximum string length without the fat part of the string beginning to wind around the tuner shaft.
Wiring / Controls
| Control Knob Model | 4KB1PC0002 |
| Control Knob Shaft Hole | 6mm, Spline, No Set Screw |
| Control Knob Diameter (Main, Brim) | 15.5mm, 20mm |
| Control Knob Height | 11mm |
| Output Jack Model | 3JKO6S001-CH |
| Output Jack Type | Tip, Sleeve |
| Output Jack Size | 0.25" (6.3mm) |
| Jack Plate Model | 4JKPTMS-CH |
| Jack Plate Length | 4.92" (125mm) |
| Jack Plate Width | 1.38" (35mm) |
| Control Assembly Model | 3CA0002R |
| Control Assembly Type | 2 volume, 1 tone |
| Potentiometer Value (P Volume) | B500K (Linear Taper) |
| Potentiometer Value (J Volume) | B500K (Linear Taper) |
| Potentiometer Value (Tone) | A500K (Audio Taper) |
| Potentiometer Shaft | 6mm, Split, Spline |
| Potentiometer Shaft Split Gap | 0.035" (0.89mm) |
| Potentiometer Spline Length | 0.32" (8mm) |
| Potentiometer Thread Diameter | 0.3" (7.7mm) |
| Potentiometer Thread Length | 0.39" (10mm) |
| Potentiometer Body Diameter | 0.65" (16.5mm) |
| Potentiometer Overall Height | 1.06" (27mm) |
| Pickguard Potentiometer Hole Diameter | 0.35" (8.9mm) |
Replacement Part Compatibility
Most standard P pickups (Seymour Duncan Quarter Pound SPB-3, EMG, etc.) should be a drop-in replacement.
Epic Custom Shop 92mm length J pickups require a small amount of sanding and new screw holes.
Gotoh VK1-18, VK1-19 knobs have 6mm smooth (no splines) shaft holes with a set screw and will fit the factory pot shaft.
Gotoh GB350 tuning machines are a drop-in replacement if the Gotoh ferrules (14mm outer diameter) are placed into the TMB factory ferrules, (14mm inner diameter) and a new screw mounting hole is drilled.
Hipshot Licensed 3/8" Ultralite Bass Tuning Machines have a shaft diameter of 13.75mm. Shimming around the shaft is required to prevent a sloppy fit. Wrapping about 9 inches of tape around the shaft will shim it to 14mm and they can be placed into the factory ferrules. However, the shaft will only enter the ferrule to a depth of 1mm, which will likely be adequate, but does not make me confident. As an alternative, a plastic or nylon bushing, sleeve bearing or spacer measuring 9/16" I.D. x 11/16" O.D. may be placed between the tuner shaft and the headstock hole. Unfortunately, I've had a difficult time finding a suitable bushing. I used Redline (Trailer Parts Pro) model SP05-020 (or SP05-040) bushings trimmed to a length of 8.5mm. The bushing required a few inches of tape around the outside to make a snug fit into the headstock hole. The tuner shaft required a few inches of tape to make a snug fit in the bushing. A new screw mounting hole is required. Although these tuners can be made to fit, I personally do not recommend using them in the TMBs. The Gotoh GB350 tuning machines offer a much easier fit. Please contact me if you have a good solution.
Hipshot USA 1/2" Ultralite Bass Tuning Machines require a 17mm or 17.5mm hole and might be a drop-in replacement with a new screw mounting hole and possibly some tape shimming around the shaft. (Unverified)
Hipshot USA 3/8" Ultralite Bass Tuning Machines require a 14mm hole and may be a drop-in replacement with possible shimming and with a new screw mounting hole. (Unverified)
Grover Vintage Bass Machines (142 Series) are a drop in replacement with two new mounting holes drilled for the bottom side of each tuner. Source: mr80htz, talkbass.com
Jack plate model JP-CST-C (chrome), JP-CST-B (black) are drop-in replacements.
Plastic nut model BN-2210-023, BN-2350-000 at allparts.com may be drop-in replacements.
A Fender Precision bridge cover fits over the stock bridge. Source: ThumpingJack, talkbass.com
Some pots have imperial or standard sized threaded shafts with a diameter of about 3/8" (0.38"), e.g. CTS, but the TMB pickguard pot holes are only 0.35" (8.9mm) diameter. Metric pots with a threaded shaft diameter of 0.3" (7.7mm) are drop in replacements. Credit: ThumpingJack, talkbass.com
Please let me know how your replacement parts fit in your TMB30. Please include the part's model number, manufacturer and/or other info. Email: kevin@kevinsworkbench.com
Compatible Strings
La Bella 760FS-S Deep Talkin’ Bass Flats – Standard 45-105, Short Scale. Source
Please email the model number of strings you've used to kevin@kevinsworkbench.com