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Telefunken ELA-M 251 大振膜话筒
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2 r( A' }1 M$ b& c" E' bThe 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.) C8 U S B- p# b) Y# I- }
6 B) u- x% Z3 \/ r2 s, O1 `5 B9 HDeveloped 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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7 Q: F9 G0 i5 n W# F, x: _5 c0 kToday, 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.
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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.
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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.5 f3 \( b+ l/ q b
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Specifications:
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Type: condenser pressure gradient
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9 |. Z2 @% C3 z) e- bCapsule: CK12* T2 M( u/ N9 [' m( X# w
0 |8 L# ?+ G& C- h' m' B# n; M( IFrequency Range: 20Hz / 20kHz
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Polar Pattern: Cardioid and Omni
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$ _5 [% f' g7 H, [% ESensitivity: approx 1.2 mvolts per dyne / cm sq" z6 p, [& [* T3 ?) Q6 d
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THD at 1kHz at 1Pa: <0.15%8 g% Z6 \/ }$ e+ a- x; {# @
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Output Impedance: <200 ohms
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Maximum SPL: 132 dB
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+ Q) j$ L$ {+ t+ P; l7 o# oNon Linear Distortion: less than or equal to 0.5% at 100 dyne / cm sq
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* n' o$ N: S, w; j; s" e U4 j8 cSelf Noise: 7dBA
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# d# }# l* i0 B& l# D- E) H% OTube Type: AC701, u& ?2 k+ ?: Q; Q5 i2 @# h+ m
2 u( y4 C0 A5 w4 C5 |Power Type: Dedicated American-made power supply with slow-ramping filament voltage
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+ Y _# q5 u- C4 j5 cDimensions: 8 1/2" (216mm) length x 2" (51mm) diameter8 S/ H( t! h4 j9 u
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Weight: 20oz (567g), 34oz (960g) with swivel
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Supply Current: <1mA(4V) 100mA+ {( c, C4 ]( x( r+ x6 h0 u- i
$ W. ^* m) u; W( L8 Q/ A) _- QConnected Via: Large Tuchel/Historic stand mount swivel, XLR-3 (M) output |
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发表于 2009-6-16 15:22:05
