感謝比爾蓋茲音響溫先生提供Tannoy各代單體，讓站長有機會了解各代Tannoy 15"單體的特性，也可以將這些參數和網路上找到的做個比較，站長比較常參考的是http://44bx.com/tannoy/Tannoy_ts.html。
Tannoy Silver 15"
由於單體價值不菲，站長僅測試散裝的一支，Silver高音沒有防塵罩，所以無法以外加重量測試效率，這支silver單體的測試結果和44bx網站公佈的差很多。
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Qts = 1.398 Total Q
Qes = 1.848 Electrical Q
Qms = 5.746 Mechanical Q
Fs = 42.658 Hertz, Free Air Resonance
Re = 10.39 Ohms, DC resistance
Ls = 2.486m H, series inductance
Lp = 2.817m H, lossy series inductance
Rp = 20.79 Ohms, loss across Lp
Dia = 310m meters, effective
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Tannoy Red 15"
溫先生提供序號接近的一對供測試，兩支單體特性天差地遠，跟44bx網站公佈的數據也八竿子打不著。
單體一
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Qts = 0.972 Total Q
Qes = 1.134 Electrical Q
Qms = 6.823 Mechanical Q
Fs = 62.744 Hertz, Free Air Resonance
Re = 10.82 Ohms, DC resistance
Ls = 1.804m H, series inductance
Lp = 2.513m H, lossy series inductance
Rp = 26.33 Ohms, loss across Lp
Dia = 310m meters, effective
(%shift) 26.1 %, resonance with mass
Vas = 48.22 litres, air volume equivalent
mms = 106.7 grams, effective mass
cms = 60.27u m/N, compliance
bl = 20.04 T*m, motor strength
n0 = 1.010 %, max efficiency
SplSens = 92.04 dBSPL max @1W absorbed
(Added mass) 90 grams
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單體二
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Qts = 1.443 Total Q
Qes = 1.788 Electrical Q
Qms = 7.480 Mechanical Q
Fs = 85.484 Hertz, Free Air Resonance
Re = 10.53 Ohms, DC resistance
Ls = 1.712m H, series inductance
Lp = 2.291m H, lossy series inductance
Rp = 24.83 Ohms, loss across Lp
Dia = 310m meters, effective
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Tannoy Gold 15"
溫先生同樣提供一對序號接近的供測試，毫不意外的兩支單體特性也是相去很遠，單體二與44bx網站公佈的測試數據比較接近。這對單體若是裝在設計良好的喇叭箱內，大致可以維持平衡的頻率響應。
單體一
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Qts = 0.628 Total Q
Qes = 0.712 Electrical Q
Qms = 5.318 Mechanical Q
Fs = 39.062 Hertz, Free Air Resonance
Re = 5.245 Ohms, DC resistance
Ls = 1.232m H, series inductance
Lp = 1.388m H, lossy series inductance
Rp = 13.95 Ohms, loss across Lp
Dia = 310m meters, effective
(%shift) 31.6 %, resonance with mass
Vas = 169.8 litres, air volume equivalent
mms = 78.21 grams, effective mass
cms = 212.2u m/N, compliance
bl = 11.89 T*m, motor strength
n0 = 1.366 %, max efficiency
SplSens = 93.35 dBSPL max @1W absorbed
(Added mass) 90 grams
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單體二
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Qts = 0.312 Total Q
Qes = 0.338 Electrical Q
Qms = 4.048 Mechanical Q
Fs = 27.291 Hertz, Free Air Resonance
Re = 6.422 Ohms, DC resistance
Ls = 1.463m H, series inductance
Lp = 1.817m H, lossy series inductance
Rp = 18.31 Ohms, loss across Lp
Dia = 310m meters, effective
(%shift) 28.1 %, resonance with mass
Vas = 285.8 litres, air volume equivalent
mms = 95.19 grams, effective mass
cms = 357.2u m/N, compliance
bl = 17.60 T*m, motor strength
n0 = 1.651 %, max efficiency
SplSens = 94.17 dBSPL max @1W absorbed
(Added mass) 90 grams
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Tannoy HPD385
溫先生同樣提供一對序號接近的供測試，這對單體比站長手上的這對稍微對稱一點，不過也是五十步和一百步的分別而以。
單體一
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Qts = 0.294 Total Q
Qes = 0.306 Electrical Q
Qms = 8.114 Mechanical Q
Fs = 16.580 Hertz, Free Air Resonance
Re = 6.252 Ohms, DC resistance
Ls = 1.206m H, series inductance
Lp = 1.439m H, lossy series inductance
Rp = 12.27 Ohms, loss across Lp
Dia = 310m meters, effective
(%shift) 29.3 %, resonance with mass
Vas = 829.9 litres, air volume equivalent
mms = 88.82 grams, effective mass
cms = 1.037m m/N, compliance
bl = 13.76 T*m, motor strength
n0 = 1.190 %, max efficiency
SplSens = 92.75 dBSPL max @1W absorbed
(Added mass) 90 grams
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單體二
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Qts = 0.314 Total Q
Qes = 0.326 Electrical Q
Qms = 9.026 Mechanical Q
Fs = 16.111 Hertz, Free Air Resonance
Re = 6.810 Ohms, DC resistance
Ls = 1.158m H, series inductance
Lp = 1.499m H, lossy series inductance
Rp = 10.92 Ohms, loss across Lp
Dia = 310m meters, effective
(%shift) 23.1 %, resonance with mass
Vas = 607.3 litres, air volume equivalent
mms = 128.5 grams, effective mass
cms = 759.0u m/N, compliance
bl = 16.49 T*m, motor strength
n0 = 749.7m %, max efficiency
SplSens = 90.74 dBSPL max @1W absorbed
(Added mass) 90 grams
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測試完所有單體後，不難發現Tannoy的老單體特性差異很大，猜想當初出廠的公差就是這樣吧。畢竟Thiel-Small model是在1972年左右才問世的，比這些老單體問世的時間晚了不少，中間又過了幾年才廣為大眾接受。至於配對到底重不重要，站長我是覺得不要差太多尚可接受。人耳是很奇怪的東西，它對絕對的頻率響應並不敏感，但對兩種聲音間細微的差異卻很容易分辨出來。因此立體聲不對稱，很容易就能聽出來。問題是，這年頭要找一對品像漂亮，序號接近的老Tannoy已經不容易了，再強求配對，可能真的要靠緣分了。