Detail 01
30W power rating
Handles 30 watts continuous. Pair with amps at or below that, or accept early speaker breakup and risk.
Product detailSKU #1273887991514
CelestionG12H Anniversary 30W, 12" Guitar Speaker 8 Ohm
Independent shopping perspective
The Korena take
A 30W ceramic 12" replacement speaker with a heavy 50oz magnet and high sensitivity. For players rebuilding a combo or cab around a lower-wattage voice.
Strong match
Who this is for
- Loading into a 1x12 combo you want louder without more amp power
- Low-wattage builds where the speaker itself is part of the tone
- Anyone matching an 8 ohm amp output to a single 12"
Consider the trade-offs
When to look elsewhere
- Amps pushing more than 30W into a single speaker
- Bass, keys, or full-range playback — this is guitar-voiced
- Anyone unwilling to solder and re-mount hardware
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
100dB sensitivity
Loud per watt. Roughly twice the perceived output of a 97dB speaker fed the same power.
Detail 03
50oz ceramic magnet
Heavy magnet for a 30W driver. Firmer low end and more defined attack than lighter-magnet designs.
Detail 04
75–5000Hz range
Rolls off early on top. No sizzle above 5kHz, which keeps distorted tones from getting harsh.
Detail 05
8 ohms nominal
Matches an 8 ohm amp output one-to-one. Two in parallel gives 4 ohms, in series 16.
Detail 06
11.1" cutout, 11.7" slot PCD
Standard 12" mounting. Measure your baffle's existing hole and bolt spacing before ordering.
Final check
Know before you order
- 01Speaker only — no wire, hardware, connectors, or gasket included
- 02Needs 5.3" of depth behind the baffle; check clearance in shallow cabs
- 03Soldering required unless your cab uses quick-connect spade terminals
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What amp wattage can I use with this?
30W is the continuous rating. Amps up to 30W are a straightforward match. Above that, you're relying on the speaker breaking up rather than handling the power cleanly.
02Is the 8 ohm or 16 ohm version right for me?
This one is 8 ohms nominal. Match it to your amp's speaker output impedance. For a single-speaker cab, pick the version equal to your amp's output rating.
03Will it fit my cabinet?
It uses standard 12" mounting: 11.1" cutout, four slots on an 11.7" circle. Overall diameter is 12.2" and depth is 5.3".
04How heavy is it?
10.4 lb, about 4.7 kg. Most of that is the 50oz ceramic magnet, so it's on the heavier side for a 30W 12".
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
4 detailsSound
- Frequency Range
- 75-5000Hz
- Nominal Impedance
- 8 ohms
- Sensitivity
- 100dB
- Resonance Frequency Fs
- 85Hz
1 detailsBody & build
- Voice Coil Material
- Rounded copper
1 detailsConnections & power
- Power Rating
- 30W
10 detailsSize & weight
- Nominal Diameter
- 12 inch, 305mm
- Voice Coil Diameter
- 1.75 inch, 44.5mm
- Weight
- 50
- Overall Depth
- 5.3 inch, 135mm
- Magnet Structure Diameter
- 6.1 inch, 156mm
- Diameter
- 12.2 inch, 309mm
- Magnet Weight
- 50oz, 1.42kg
- Cut Out Diameter
- 11.1 inch, 283mm
- Mounting Slot Dimensions
- 0.31 inch, 7.9mm ¸
- Unit Weight
- 10.4lb, 4.7kg
5 detailsOther
- Chassis Type
- Pressed steel
- Number of Mounting Slots
- 4
- Magnet Type
- Ceramic
- Mounting Slot Pcd
- 11.7 inch, 297mm
- DC Resistance Re
- 6.7 ohms & 13.1 ohms
