有哪位朋友用过这块板的，可否说说效果如何？看资料的频响也不算很高：; N7 Z" n# k' z3 ^
Balanced to unbalanced (Section 1):! A F' y( h- {; n
Input impedance ≥ 10 kΩ, balanced/floating
1 [1 w# z; f) F3 k$ f- E: V; D9 mMaximum input level +24 dBu4 g3 U! J2 b e) p$ f$ D! K
Output impedance < 100 Ω, unbalanced
# H0 ]/ s2 S2 c9 OMaximum output level +20 dBu* D2 H7 U8 z5 g
Minimum load 600 Ω. s/ ?* T1 o3 |# ^- d
Frequency response ±0.2 dB, 30 Hz...16 kHz8 ]2 }8 u: r/ j4 Y6 I
Attenuation 0/15 dB; two fixed steps
2 p0 I- c" i$ n3 \* u6 M0...15 dB; variable/ p' s1 g( `$ M1 c, ]9 z/ Y! E" n
S/N > 100 dB; attenuation set to 6 dB, line level +6 dBu
# g+ k& _. L NUnbalanced to balanced (Section 2):7 u. S6 u2 \9 h9 P, K
Input impedance 5 kΩ, unbalanced
: g, t/ m6 {4 ]* g& I/ ZMaximum input level +20 dBu9 d# t5 I5 w! r) }
Output impedance ≤ 50 Ω, balanced/floating8 y* w( ?3 G& }/ _% w P3 b
Minimum load 200 Ω: ?7 j& M# v' t2 |- s7 I, W
Maximum output level +24 dBu! p1 d( \) B/ f7 {# l& _
Frequency response ±0.2 dB, 30 Hz...16 kHz! ^8 K6 b0 c' D, M; Y- I8 j5 A
Gain 14/30 dB; two fixed steps
! o7 Z' w( l; Z) m- r0...17 dB; variable5 [4 j I7 F+ M( a
S/N > 100 dB; gain set to 6 dB, line level +6 dBu9 _+ e* p5 H' w* }, P' n; Y" e, K1 d2 v
Supply: ±15 V (70 mA, idling; 170 mA, each channel +24 dBu into 200 Ω) |
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发表于 2013-1-19 13:19:53
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