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J-45 Progressive
A handmade guitar for the contemporary progressive acoustic player
$2,999
Combining our rich history of hand built acoustics with modern innovations the J-45 Progressive is outfitted with cutting-edge features to enhance all playing styles.
Body
Top
Back
Top
Wood Species: Sitka Spruce
Pieces: 2
Grade: AA
Binding: 4 ply top
 
Back
Wood Species: Mahogany
Pieces: 2
Density:
Binding: 1 ply
Weight
Weight Relief:
Average Weight (body only): 1.025 kg /2.26 lbs
 
Materials Used
Glue: Franklin Titebond 50
 
Tonal, Resonant, and/or Technical Effect: Radiused top with scalloped bracing for projection and resonance
 
Body Contour
Carve: Radiused
Neck
Neck
Wood Species: Mahogany
Pieces: 1
 
Details
Truss Rod: Single Action
Profile: Slim Taper
Thickness at Fret 1: 2.118cm / .83"
Thickness at Fret 12:
Other Materials: Franklin Titebond 50, hot hide glue neck joint
Average Weight: 408.23 gr / 14.4 oz
 
Peg Head
Type: CF-100
Inlay: MOP
Peg Head Binding:
Silkscreen:
Headstock Angle: 17 degrees
Tonal, Resonant, and/or Technical Effect: Compound Dovetail neck joint for resonance distribution throughout guitar
 
Neck Fit
Joint Angle: 3 degrees
Joint Angle Tolerance:
Type: Compound Dovetail
Adhesive: Hot hide glue
Gauges Used: Short Scale Pitch Guage, Rule
Nut
:
Material: Black Tusq
Width: 4.38 cm / 1.725"
Slots: E: 0.053
A: 0.042
D: 0.032
G: 0.024
B: 0.016

e: 0.012
 
Fingerboard
Wood Species: Richlite
Pieces: 1
Shade:
 
Fingerboard Details
Radius: 30.48 cm / 12 "
Frets: 20
Nut/End of Board: 4.38cm / 1.725" @ nut, 5.70cm / 2.245" @ end of board
Scale: 62.865cm / 24.75"
Binding:
Side Dots (Color): White
 
Fingerboard Inlays
Style: Parallelograms
Material: Mother of Pearl
Dimensions:
Average Weight: 111.13gr / 3.92oz
Finishes
Autumn Burst
Color Code: AB
Surface Texture: Smooth/ Hi Gloss 90 Sheen Lacquer
Filler:
Sealer: 1-1.5 mils
Top: H.B. - TV-L41R0016L1, SNBRST YELLOW ANY0033, Unitone L41N0049
Top Coat: Hi Gloss Lacquer/ 90 Sheen 7-8 mils
Scraped: Fingerboard Sides and Nut
Electronics
Pickups Rhythm Lead
Style: L.R. Baggs Lyric
Winds/Coil: Screw side/Slug side:
Material of Wire (gauge):
Coil Dimensions (per coil):
Coil Material:
Coil Winding Process:
Pole Piece Material:
Pole Piece Position from Nut:
Slug Material:
Slug Dimensions (diameter x length):
Magnet Material:
Magnet Position from Nut:
Magnet Dimensions:
Polarities:
Cover:
Qfactor:
ResistanceDC:
Resonant Frequency:
Tonal & Resonant Advancements:
Control Pocket Assembly Lead Volume Rhythm Volume
Type:
Peak Voltage:
Range:
Power Rating:
Resistance Tolerance:
Minimum Resistance:
 
  Lead Tone
Type:
Peak Voltage:
Range:
Power Rating:
Resistance Tolerance:
Minimum Resistance:
 
Capacitors: Lead Value Rhythm Value
 
Hardware
Tuning Keys
Style: G-Force
Material:
Weight: 283.49gr / 10.0oz
 
Tuning Keys Details
Tuning Ratio:
Gear Type:
What is allowable turn:
Plating specs: Nickel
Part numbers: 140-130-747
 
String Dimensions
E: 0.053
A: 0.042
D: 0.032
G: 0.024
B: 0.016
e: 0.012
 
Bridge
Style: Belly up Tune-o-matic
Material: Richlite with adjustable bridge w/ titanium saddles
Plating Specs:
Part number: 140-120-922, 140-130-867
Weight: 28.57gr / 1.008oz
 
Output Jack
Style: 6.35 mm / 1/4" mono
 
Pickup
Style: L.R. Baggs Lyric
Plating Specs:
Part numbers:
Weight:
Plastics
Pick Guard
Style: Tortoise Teardrop
Part Number: 140-130-956
 
Truss Rod Cover
Style: 2016
Part Number: 140-130-840
 
Style:
Part Number:
 
Accessories
Case
Style: Hard Shell
Color: Black
 
Strap Locks:
Tools:
 
Manual: Gibson Acoustic Owner's Manual
COA/Other: None