Altec 755 series voice has always been standing long love, due to moving house edge, Zhan Zhang Yes 755A lose 蹤 nearly a year, life and death unknown. Hand there are two I'm 755C, I'm in San Francisco home to Dad, Ting song, another Yes in the dust on the shelves, don't know what time is quite Club Med open sheng. Took the Praxis measured completely T/S the parameter number, for future reference:
=praxis= Thiele/Small Parameters
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755c-1
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Qts = 0.937 Total Q
Qes = 1.154 Electrical Q
Qms = 4.988 Mechanical Q
Fs = 53.485 Hertz, Free Air Resonance
Re = 7.099 Ohms, DC resistance
Ls = 228.5u H, series inductance
Lp = 488.6u H, lossy series inductance
Rp = 1.427 Ohms, loss across Lp
Dia = 180m meters, effective
(%shift) 41.1 %, resonance with mass
Vas = 76.81 litres, air volume equivalent
mms = 10.48 grams, effective mass
cms = 844.6u m/N, compliance
bl = 4.655 T*m, motor strength
n0 = 978.9m %, max efficiency
SplSens = 91.90 dBSPL max @1W absorbed
(Added mass) 20 grams
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=praxis= Thiele/Small Parameters
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755c-2
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Qts = 0.923 Total Q
Qes = 1.143 Electrical Q
Qms = 4.798 Mechanical Q
Fs = 48.304 Hertz, Free Air Resonance
Re = 7.077 Ohms, DC resistance
Ls = 222.7u H, series inductance
Lp = 455.9u H, lossy series inductance
Rp = 1.219 Ohms, loss across Lp
Dia = 180m meters, effective
(%shift) 39.6 %, resonance with mass
Vas = 87.04 litres, air volume equivalent
mms = 11.34 grams, effective mass
cms = 957.1u m/N, compliance
bl = 4.617 T*m, motor strength
n0 = 825.4m %, max efficiency
SplSens = 91.16 dBSPL max @1W absorbed
(Added mass) 20 grams
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Two measured up performance similar to Qts over 0.7 of design plan, now trumpets less see, a lot of people come when the full range, low frequency idiosyncrasy is too heavy. Station long preference took future when Alto veneered Stadium, two end 盡 volume extends, take 10kHz~120Hz, take tie proper of Super treble stub bass, Sheng sound good to not like said, last home moved East West, 順 will Ting has about zhiqian installation of 755C-803 team collection, took distribution Mein black Horn online and cheap of AMC Zong collection 擴 big airport, Sheng sound still is filling full Altec of features, clear has vitality, let is with obesity swelling 腫 of Tannoy HPD385 纏 鬥 of station long not fight Qi of wants to cry ~~
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