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Telefunken ELA-M 251 大振膜话筒. i. M; Q% r& I8 h8 O2 H- D
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/ b* b/ W- O0 c8 r# H6 pThe TELEFUNKEN ELA M 251 amplifier circuit was originally built to satisfy the standardized requirements of the German and Austrian national broadcast systems after World War II. Utilizing a TELEFUNKEN AC701 vacuum tube, a CK12 capsule provided by AKG Acoustics GmbH, and a Haufe made T14:1 ratio output transformer, the ELA M 251 has achieved legendary stature in the modern recording industry.
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5 R$ D# S/ H8 W1 j' h1 EDeveloped specifically for microphone applications, the AC701 is a sub-miniature triode vacuum tube that produces a very rich and opulent tone. Built from a glass enclosure, its characteristics include a very low self-noise floor, a low degree of microphonics, and a propensity for an exceptionally long life (so long as the voltages provided by the power supply were correct and stable) which meant far less maintenance and consistent results.
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Today, prime examples of vintage ELA M 250 / 251 [both "E" and "non E"] microphones have become rare and highly sought after jewels, commanding tens of thousands of dollars on the vintage market. TELEFUNKEN Elektroakustik&＃39;s historic recreations of the ELA M 251 exemplify the best qualities of the finest specimens of these legendary beasts, and while more expensive than most modern microphones, they are true to the heritage of their 50+ year old brethren.; P# L7 ]1 g( F. w. B0 ]# S
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The new TELEFUNKEN ELA M 251 includes an edge terminated, dual backplate CK12 capsule capable of cardioid, omnidirectional, and biirectional polar patterns and a European made Haufe 14:1 ratio output transformer (the same design found in the AKG Acoustics GmbH C-12). Each reissue is 100% true in every detail to the original [the parts are interchangeable with the 50+ year old originals], and will deliver the same sonically opulent response that made the ELA M 251 one of the world&＃39;s most sought after recording tools.; X$ y! m5 y' K1 R5 u6 }, ~
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In the Box: ELA M 251 microphone, M950 power supply, M850 25&＃39; quad-shielded Accusound ACX-7 tube microphone cable, M750 elastic shock mount, FC50 locking flight case and WB50 wooden microphone box.% F. g/ b7 R6 h1 }, w
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Specifications:; h" q3 M: I, \' b1 j
7 O; u4 N: n0 t3 f) dType: condenser pressure gradient+ ?- h) ?/ A, f: X+ s: x8 a
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Capsule: CK12
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) Z. t3 w! _ j& P8 Q. a7 e8 u$ v- aFrequency Range: 20Hz / 20kHz. f" S! m' m; f# Z7 z$ q/ W
! G' u; x9 N8 G1 ^/ x0 T% nPolar Pattern: Cardioid and Omni: c/ r0 t/ U& A( @
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Sensitivity: approx 1.2 mvolts per dyne / cm sq
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& B! ]+ m& g6 e1 w% W% _& ATHD at 1kHz at 1Pa: <0.15%4 v' H0 D$ K" B& f# ]( i# t
# ~3 h1 V1 U5 u! T- X6 pOutput Impedance: <200 ohms2 l' Q ~( H& x. @$ b. W
E/ s9 x8 E4 o: B6 u6 }Maximum SPL: 132 dB
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; a2 ]8 y* n5 x! p( ?5 u4 JNon Linear Distortion: less than or equal to 0.5% at 100 dyne / cm sq
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Self Noise: 7dBA" n3 g2 o4 W! `2 |+ {
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Tube Type: AC701
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, A3 I8 P2 |: C+ }Power Type: Dedicated American-made power supply with slow-ramping filament voltage
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; m; [4 o/ A7 L) p, M1 A8 ` XDimensions: 8 1/2" (216mm) length x 2" (51mm) diameter
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: Y5 z2 i: V: ~Weight: 20oz (567g), 34oz (960g) with swivel+ M( K Q0 w& q' ]: L$ P& {5 g9 b
' E6 C/ k: m! ESupply Current: <1mA(4V) 100mA
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Connected Via: Large Tuchel/Historic stand mount swivel, XLR-3 (M) output |
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发表于 2009-6-16 15:22:05
