Beyma12GA50.pdf

Nowa Beyma 12GA50 co z tym zrobic?

Beyma wydala nowy glosnik szerokopasmowy 12GA50. Kosztuje 277zl ma 250W AES skutecznosc 102dB, problem w tym, ze wysokie jest Qts1,16. I co z tym zrobic, do czego wykorzystac taki glosnik mimo dobrych parametrów, jaka bylaby najbardziej wskazana tu obudowa, aby zapewnic dobra prace temu przetwornikowi. Zamieszczam plik pdf do sciagniecia dla zainteresowanych tematem. W elmuzie twierdza, ze jest to nowy "ostry" glosnik gitarowy, ale gitarowy , który przenosi do 18kHz to troche nie bardzo to widze hm....


12GA50
12GA50

FULL-RANGE
LOUDSPEAKER

KEY FEATURES
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High Sensitivity (102 dB 2.83v @ 1m @ 2?) and
double cone for an extended bandwidth coverage
Special treated surround to obtain an extremely
linear frequency response
Short-circuit copper ring for low harmonic
distortion and constant impedance modulus
2" aluminium voice coil with kapton former
Designed for high quality full-range reproduction
and music instruments reinforcement

GENERAL DESCRIPTION
This full-range transducer offers two main points of interest: an extremely high sensitivity (102 dB) and an extended frequency
response. Both characteristics make it suitable for high quality systems. Moreover, its versatile design allows it to be used as a
full-range transducer in guitar or organ amplification or in sound reinforcement systems.
Beyond its frequency response advantages, this loudspeaker offers more: it takes profit of the improvements achieved in our low
frequency-high power transducers. Thus, it incorporates a high quality voice coil made of high temperature magnet wire and
kapton former. Thanks to this design concept of strength, the 12GA50 reaches a great power handling.

FREQUENCY RESPONSE AND DISTORTION CURVES

Note: on axis frequency response measured with loudspeaker standing
on infinite baffle in anechoic chamber, 1w @ 1m.

FREQUENCY RESPONSE OUT OF AXIS

FREE AIR IMPEDANCE CURVE

12GA50
12GA50

FULL-RANGE
LOUDSPEAKER

TECHNICAL SPECIFICATIONS
Nominal diameter
Rated impedance
Minimum impedance
Power capacity *
Program power
Sensitivity
Frequency range
Recom. enclosure vol.
Voice coil diameter
Magnetic assembly weight
BL factor
Moving mass
Voice coil length
Air gap height
X damage (peak to peak)

DIMENSION DRAWINGS

300 mm. 12 in.
8 ohms.
6.8 ohms.
250 w AES
500 w
102 dB 2.83v @ 1m @ 2?
70 - 18000 Hz
20 / 70 l 0.7 / 2.45 ft.3
52 mm. 2 in.
2.75 kg. 6.1 lb.
10 N / A
0.034 kg.
9 mm.
7 mm.
24 mm.

MATERIALS

MOUNTING INFORMATION
Overall diameter
Bolt circle diameter
Baffle cutout diameter:
- Front mount
- Rear mount
Depth
Volume displaced by driver
Net weight
Shipping weight

312 mm. 12.3 in.
294.5 mm. 11.6 in.
277.5 mm.
280 mm.
139 mm.
5.5 l
3.55 kg.
4 kg.

10.9 in.
11.02 in.
5.47 in.
0.19 ft.3
7.81 lb.
8.81 lb.

THIELE-SMALL PARAMETERS **
Resonant frequency, fs
D.C. Voice coil resistance, Re
Mechanical Quality Factor, Qms
Electrical Quality Factor, Qes
Total Quality Factor, Qts
Equivalent Air Volume to Cms, Vas
Mechanical Compliance, Cms
Mechanical Resistance, Rms
Efficiency, ?o (%)
Effective Surface Area, Sd (m2)
Maximum Displacement, Xmax
Displacement Volume, Vd
Voice Coil Inductance, Le @ 1 kHz

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90 Hz
6.2 ohms.
14.8
1.26
1.16
34 l
87 um / N
1.34 kg / s
2.1
0.0530 m2
2 mm.
105 cm.3
0.6 mH

Voice coil: aluminium wire with high temperature
bonding strength. Kapton former, able to withstand
high temperatures.
Cone: light and stiff paper cone to provide good midfrequency response and tweeter cone for extended
bandwidth.
Surround: treated paper to mechanically equalize
the frequency response.
Spider: cotton spider.
Metal parts: high quality magnetic alloy plates.
Basket: specially designed die cast aluminium basket to avoid disturbing resonances.
Magnet: high Curie temperature ferrite.

Notes:
*The power capacity is determined according to AES2-1984 (r2003) standard.
Program power is defined as the transducer's ability to handle normal music program material.
**T-S parameters are measured after an exercise period using a preconditioning power test.
The measurements are carried out with a velocity-current laser transducer and will reflect the long
term parameters (once the loudspeaker has been working for a short period of time).

acústica beyma,s.a.

Polígono Industrial Moncada II ? C/. Pont Sec, 1c ? 46113 MONCADA - Valencia (Spain)
? Tel. ( 34 ) 96 130 13 75 ? Fax ( 34 ) 96 130 15 07 ? http://www.beyma.com ? E-mail: beyma@beyma.com ?


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