BEYMA 12G40
BEYMA 12G40 — 12" / 12 inch · Guitar Speaker · Guitar Speaker
500 W AES - 97 dB - 45 – 4000 Hz - 8 Ω
Part no.: 42A-CHS-GL-BEY-0001
Documents
BEYMA 12G40 — 12" · Guitar Speaker
500 W AES · 97 dB Sensitivity · Frequency range 45 Hz – 4000 Hz
Technical data
- Diameter: 12 "
- Voice coil: 3 "
- Power handling: 500 W AES
- Sensitivity: 97 dB
- Impedance: 8 Ω
- Weight: 7.1 kg
- Mounting depth: 118 mm
- Frequency range: 45 – 4000 Hz
Series: G · Part no.: 42A-CHS-GL-BEY-0001
BEYMA 12G40: 12" guitar speaker with 97 dB and 500 W AES for loud stages
Twelve inches is the standard format for guitar cabinets, and that is exactly where the BEYMA 12G40 sits. It belongs to the G series, Beyma's line of guitar speakers, and pairs a cone with 0.053 m² of area with a 3" voice coil. The 500 W AES rating is high for this class; it allows use with powerful valve and solid-state amplifiers without thermal worries, including 2x12 or 4x12 cabinets that play loud all night.
97 dB sensitivity is a figure that counts: at the same amplifier power the 12G40 plays audibly louder than a less sensitive driver, which makes the difference with small valve amps in particular. The 45 to 4,000 Hz range covers the guitar's fundamentals and overtones and rolls off above. At 32 g moving mass the cone is light and the coil inductance of 0.5 mH is low; that keeps the attack fast and the upper mids present.
Use and enclosure
For guitar you choose between open and closed back by ear. If you want to approach the speaker analytically, say in a bass cabinet or a full-range project, the guide values derived from the parameters help: vented around 38 l, tuned to 55 Hz, f3 near 62 Hz; sealed around 18 l with fc at 104 Hz. An EBP of 105 shows that vented or large open-back enclosures suit the design better than compact sealed boxes.
The mounting depth of 118 mm is moderate and fits common guitar cabinets. At 7.1 kg the ferrite motor is heavy; in a 4x12 that adds up. As a low-mid driver in a multi-way system, cross over well below the 4,000 Hz upper limit. You will find parameters and enclosure options in the driver database and the box calculator at 42.audio.
What to look out for
- 97 dB sensitivity: little amplifier power needed, important with small valve amps
- 8 Ω impedance, Re 6.3 Ω: select the amp output accordingly
- Xmax 3.2 mm: sufficient for guitar, limited for deep bass content
- 7.1 kg per driver, mounting depth 118 mm
Frequently asked questions
Is the 12G40 suitable for bass guitar?
More as a supplement: with 3.2 mm Xmax and a range from 45 Hz it suits the low-mid region, but not deep bass at high levels. For electric guitar, on the other hand, it is precisely what it was designed for.
Which amplifier suits the 12G40?
A 500 W AES rating means practically no guitar amp will overload it thermally. Impedance matters more: 8 Ω at the matching tap. With several drivers, mind the total impedance of the wiring.
12G40 or 8G40?
The 12G40 offers 97 dB, 500 W AES and the typical 12" voicing for classic guitar cabinets. The 8G40 is the compact option with more excursion for small combos and multi-driver setups.
Beyma 12G40: manufacturer, spellings and classification
Beyma and Acustica Beyma refer to the same manufacturer: Acústica Beyma S.L. of Moncada near Valencia, Spain. The 12G40 is a 12-inch guitar speaker from the G series, available from 42.audio, Beyma dealer in Germany, with datasheet and full specifications in the driver database.
At 42.audio you get the BEYMA 12G40 with all key data in the driver database and the enclosure calculator. More drivers from this manufacturer: Atlas Beyma.
Thiele-Small parameters
| Nominal impedance | 8 Ω |
|---|---|
| Resonance frequency fs | 44 Hz |
| Total Q Qts | 0.3 |
| Electrical Q Qes | 0.42 |
| Mechanical Q Qms | 5.8 |
| Equivalent volume Vas | 81.0 l |
| Moving mass Mms | 32.0 g |
| Cone area Sd | 530 cm² |
| Linear excursion Xmax | 3.2 mm |
| Displaced volume Vd | 169 cm³ |
| Force factor BL | 9.5 Tm |
| DC resistance Re | 6.3 Ω |
| Voice coil inductance Le | 0.5 mH |
Specifications
| Allgemein | |
|---|---|
| Manufacturer | BEYMA |
| Category | Guitar Speaker |
| Series | G |
| Impedance (Ω) | 8 |
| Power handling (W) | 500 |
| Sensitivity (dB) | 97 |
| Frequency from (Hz) | 45 |
| Frequency to (Hz) | 4000 |
| Abmessungen & Korb | |
|---|---|
| Diameter | 12 |
| Voice coil (inch) | 3 |
| Mounting depth (mm) | 118 |
| Weight (kg) | 7.1 |
| Thiele-Small-Parameter | |
|---|---|
| Re (Ω) | 6.3 |
| Le (mH) | 0.5 |
| Fs (Hz) | 44 |
| Qms | 5.8 |
| Qes | 0.42 |
| Qts | 0.3 |
| Vas (l) | 81 |
| Xmax (mm) | 3.2 |
| Vd (cm³) | 169 |
| BL (Tm) | 9.5 |
| Mms (kg) | 0.032 |
| Sd (m²) | 0.053 |