BEYMA 12GA50
BEYMA 12GA50 — 12" / 12 inch · Full-Range Driver · Full-Range / Wideband
250 W AES - 102 dB - 100 – 18000 Hz - 5 Ω
Part no.: 42A-CHS-BB-BEY-0005
Documents
BEYMA 12GA50 — 12" · Full-Range Driver
250 W AES · 102 dB Sensitivity · Frequency range 100 Hz – 18000 Hz
Technical data
- Diameter: 12 "
- Voice coil: 2 "
- Power handling: 250 W AES
- Sensitivity: 102 dB
- Impedance: 5 Ω
- Frequency range: 100 – 18000 Hz
Series: GA · Part no.: 42A-CHS-BB-BEY-0005
Beyma 12GA50: 12" loudspeaker with 102 dB and 250 W AES for instrument amplifiers
The Beyma 12GA50 is a 12" loudspeaker from the GA series with a data set that clearly separates it from the BR wideband drivers: 102 dB sensitivity, 250 W AES, 5 Ω impedance and a transmission range from 100 Hz to 18,000 Hz. A resonance frequency of 90 Hz and a Qts of 1.16 show that this is not meant to be a bass reflex woofer, but a driver that brings a pronounced region around its resonance of its own accord and is not needed above 18,000 Hz.
That combination is the signature of a guitar and instrument speaker. The high sensitivity makes a valve or transistor amplifier loud without much power applied, the 2" voice coil absorbs the 250 W AES thermally, and the high Qts keeps an audible emphasis in the low midrange when the driver sits in an open or semi-open cabinet. In hi-fi that would be unwanted; in a guitar amp it is part of the sound.
Use and enclosure
The 12GA50 belongs in a combo or extension cabinet with an open or partially open back, as is common for instrument amplifiers. A closed cabinet works as well and delivers a tighter, more direct tone; bass reflex makes no sense with Qts 1.16, because the alignment yields no clean low-frequency extension. There is deliberately no volume guideline here, since with instrument speakers the tonal result counts for more than a textbook frequency response.
The 5 Ω impedance is no problem for guitar amplifiers with a switchable output transformer, but in a combination of two or more drivers you calculate the total impedance carefully. As a hi-fi wideband driver the 12GA50 is not intended: the range only starts at 100 Hz, and the response is voiced for instrument reproduction.
What to look out for
- 5 Ω impedance: pick the amp's output tap accordingly, work out series or parallel wiring.
- 102 dB sensitivity: very loud with little power, good for valve amps with limited output.
- Qts 1.16 and Fs 90 Hz: for open-back or closed cabinets, not for bass reflex.
- 250 W AES with 2" voice coil: high thermal headroom for stage and rehearsal room.
Frequently asked questions
Is the 12GA50 a hi-fi wideband driver?
No. With a 100 Hz lower limit, Qts 1.16 and a voicing aimed at instruments, it is a guitar and instrument speaker. For hi-fi designs, Beyma's BR and FR series offer considerably lower resonance frequencies.
Which cabinet suits the 12GA50?
An open or semi-open combo cabinet is the classic route and uses the high Qts for a full tone. A closed cabinet sounds tighter and projects more directly forward. Bass reflex offers no advantage with this parameter set.
How much amplifier power does the 12GA50 need?
Little. At 102 dB a small valve amp reaches high volume, and the 250 W AES are the ceiling for continuous use. Several drivers in one cabinet share the power; what then matters is the resulting impedance from the 5 Ω per driver.
Beyma 12GA50: manufacturer, spellings and classification
Beyma and Acustica Beyma refer to the same manufacturer: Acústica Beyma S.L. of Moncada near Valencia, Spain. The 12GA50 is a 12-inch full-range driver from the GA 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 12GA50 with all key data in the driver database and the enclosure calculator. More drivers from this manufacturer: Atlas Beyma.
Thiele-Small parameters
| Nominal impedance | 5 Ω |
|---|---|
| Resonance frequency fs | 90 Hz |
| Total Q Qts | 1.16 |
| Equivalent volume Vas | 3.5 l |
Specifications
| Allgemein | |
|---|---|
| Manufacturer | BEYMA |
| Category | Full Range |
| Series | GA |
| Impedance (Ω) | 5 |
| Power handling (W) | 250 |
| Sensitivity (dB) | 102 |
| Frequency from (Hz) | 100 |
| Frequency to (Hz) | 18000 |
| Abmessungen & Korb | |
|---|---|
| Diameter | 12 |
| Voice coil (inch) | 2 |
| Thiele-Small-Parameter | |
|---|---|
| Fs (Hz) | 90 |
| Qts | 1.16 |
| Vas (l) | 3.55 |