Detail 01
10-inch nominal diameter
The speaker’s nominal diameter is 10 inches (254 mm).
Product detailSKU #1500000374079
GAMMATrue Blue TB10G 10" Guitar Amp Speaker
Independent shopping perspective
The Korena take
GAMMA’s True Blue TB10G is a 10-inch, 8-ohm guitar-amp speaker rated at 30 watts. Its 20-ounce ferrite magnet is paired with a 1.5-inch copper-covered aluminum voice coil and pressed-steel chassis. The speaker is designed to deliver headroom, clarity, dynamics, and ample low-frequency response, with coverage for transparent cleans, medium-gain distortion, and aggressive high-gain sounds. It is also positioned for carrying tones from stompboxes, multi-FX processors, and modeling units into an amp.
Strong match
Who this is for
- Upgrading a guitar amp that delivers up to 30 watts at 8 ohms.
- Guitar rigs using stompboxes, multi-FX processors, or modeling units to shape the amp’s sound.
- Players moving between transparent cleans, medium-gain distortion, and aggressive high-gain distortion.
Consider the trade-offs
When to look elsewhere
- Amplifiers delivering more than 30 watts or using 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
Four mounting slots
The chassis provides four mounting slots; their PCD is 9.57 inches (243 mm).
Detail 03
4.18-inch overall depth
Allow for a 4.18-inch (106 mm) speaker depth in the amp.
Detail 04
94 dB sensitivity
Sensitivity is rated at 94 dB.
Detail 05
20-ounce ferrite magnet
Uses a 20-ounce ferrite magnet with a 4.33-inch (110 mm) structure diameter.
Final check
Know before you order
- 01Confirm the amp is rated for a 30W, 8-ohm speaker.
- 02Check the 10-inch nominal diameter, 4.18-inch depth, four-slot mounting pattern, and 9.06-inch cutout diameter against the cabinet.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What power and impedance is the TB10G rated for?
It has a 30W power rating and 8-ohm nominal impedance.
02What guitar sounds is it designed to handle?
It is described for transparent cleans, medium-gain distortion, and aggressive high-gain distortion.
03Can it be used with effects and modeling gear?
Yes. It is designed to translate tones from stompboxes, multi-FX units, and modeling units.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
3 detailsSound
- Nominal Impedance
- 8 ohms
- Sensitivity
- 94dB
- Resonance Frequency Fs
- 90Hz
2 detailsBody & build
- Color
- Blue
- Voice Coil Material
- Copper-covered aluminum
1 detailsConnections & power
- Power Rating
- 30W
10 detailsSize & weight
- Nominal Diameter
- 10 inch (254 mm)
- Voice Coil Diameter
- 1.5 inch (38.6 mm)
- Weight
- 20
- Overall Depth
- 4.18 inch (106 mm)
- Magnet Structure Diameter
- 4.33 inch (110 mm)
- Diameter
- 10 inch (254 mm)
- Magnet Weight
- 20 oz
- Cut Out Diameter
- 9.06 inch (230 mm)
- Mounting Slot Dimensions
- .2 inch x .28 inch (5 mm x 7 mm)
- Unit Weight
- 3.97 lb. (1.8 kg)
5 detailsOther
- Chassis Type
- Pressed steel
- Number of Mounting Slots
- 4
- Magnet Type
- Ferrite
- Mounting Slot Pcd
- 9.57 inch (243 mm)
- DC Resistance Re
- 6 ohms
