Detail 01
Four mounting slots
The speaker mounts through four slots; check the existing baffle pattern before installation.
Product detailSKU #1500000374080
GAMMATrue Blue TB12G 12" Guitar Amp Speaker
Independent shopping perspective
The Korena take
Built for a 12-inch guitar amp upgrade where the amplifier delivers up to 60W at 8 ohms. The True Blue TB12G uses a 40-ounce ferrite magnet and is voiced to deliver headroom, clarity, dynamics, and substantial low-frequency response. It can carry aggressive high-gain sounds, transparent cleans, and medium-gain drive, while translating tones created with stompboxes, multi-FX processors, or modeling units.
Strong match
Who this is for
- Replacing a compatible 12-inch, 8-ohm guitar amp speaker in an amplifier rated up to 60W.
- Players moving between clean, medium-gain, and aggressive high-gain sounds through pedals or modeling gear.
Consider the trade-offs
When to look elsewhere
- Amplifiers delivering more than 60W.
- Installations requiring a nominal impedance other than 8 ohms.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
5.28-inch overall depth
Confirm the cabinet has enough internal clearance for the speaker depth.
Detail 03
10.95-inch cutout diameter
Check the cabinet opening against the specified cutout diameter.
Final check
Know before you order
- 01Confirm the amp is an 8-ohm design delivering no more than 60W.
- 02Check the cabinet cutout, mounting pattern, and 5.28-inch depth clearance.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What amplifier rating is the TB12G intended for?
It is intended for amps delivering up to 60W at 8 ohms.
02How many mounting slots does it have?
It has four mounting slots.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
3 detailsSound
- Nominal Impedance
- 8 ohm
- Sensitivity
- 95dB
- Resonance Frequency Fs
- 95Hz
2 detailsBody & build
- Color
- Blue
- Voice Coil Material
- Copper-covered aluminum
1 detailsConnections & power
- Power Rating
- 60W
10 detailsSize & weight
- Nominal Diameter
- 12 inch (305 mm)
- Voice Coil Diameter
- 2 inch (50.5 mm)
- Weight
- 40
- Overall Depth
- 5.28 inch (134 mm)
- Magnet Structure Diameter
- 4.73 inch (120 mm)
- Diameter
- 12 inch (310 mm)
- Magnet Weight
- 40 oz
- Cut Out Diameter
- 10.95 inch (278 mm)
- Mounting Slot Dimensions
- .24 inch x .32 inch (6 mm x 8 mm)
- Unit Weight
- 6.06 lb. (2.75 kg)
5 detailsOther
- Chassis Type
- Pressed steel
- Number of Mounting Slots
- 4
- Magnet Type
- Ferrite
- Mounting Slot Pcd
- 11.65 inch (296 mm)
- DC Resistance Re
- 6 ohms
