Callaway Big Bertha Alpha 815 (2015)
Big Bertha Alpha 815 driver from Callaway’s archived US specifications: 3 heads from 9.0° to 12.0°, 45.5 in standard length.
- Published loft options
- 9.0, 10.5, 12.0°
- Published length
- 45.5 in
- Published head volume
- 460 cc
Documented specifications & build options
Standard head specifications from Callaway’s US specification table. Values describe the stock build and standard hosel setting; custom lengths, shafts and settings differ.
| Field | Documented value |
|---|---|
| Published loft options | 9.0, 10.5, 12.0 ° |
| Published length | 45.5 in |
| Published head volume | 460 cc |
Source: Callaway Big Bertha Alpha 815 driver specifications, Callaway US, Internet Archive capture of 2014-11-01. Reviewed 2026-10-22.
Specifications by configuration
| Configuration | Published values |
|---|---|
| 9.0° head ↗ | Loft: 9.0 ° Loft setting: Adjustable Length: 45.5 in Head volume: 460 cc Handedness: RH / LH Lie setting: Adjustable Weight setting: Adjustable |
| 10.5° head ↗ | Loft: 10.5 ° Loft setting: Adjustable Length: 45.5 in Head volume: 460 cc Handedness: RH / LH Lie setting: Adjustable Weight setting: Adjustable |
| 12.0° head ↗ | Loft: 12.0 ° Loft setting: Adjustable Length: 45.5 in Head volume: 460 cc Handedness: RH / LH Lie setting: Adjustable Weight setting: Adjustable |
Identifying the right model
- A black sole with red accents, a red-ringed GRAVITY CORE port at the centre, BIG BERTHA ALPHA lettering, 815 marked beside it and a round weight port toward the heel.
What to check before using the reference
- Callaway lists the total weight as Adjustable (Gravity Core), so no head weight is given; the table gives swing weights for the Speeder 565/665 and Diamana S+ 60 stock shafts (D3 and D4).
Continue exploring drivers
Quantum Max
Quantum Max driver reference. Published loft options: 9, 10.5, 12°. See the documented build choices and source links.
Quantum Max D
Quantum Max D driver reference. Published loft options: 9, 10.5, 12°. See the documented build choices and source links.
Quantum Max Fast · 2026 US page
Quantum Max Fast driver from Callaway’s archived US product page: 2 heads from 10.5° to 12.0°, 45.75 in standard length.
Quantum Mini · 2026 US page
Quantum Mini driver from Callaway’s archived US product page: 2 heads from 11.5° to 13.5°, 44 in standard length.