Performance test shot in ipohne8 attaching with stereo mic ( iQ7 : 120 Degree )
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YouTube (Browser＝Opera) → PC（MacBook PRO17” ）→ DDC ( Sonicweld Diverter ) with separate Power supply ( DC9V battery~DD converter~DC5V ) → DAC (Apogee DA-1000/PS-1000: Balance 2Hot out ) →Balance PRE Attenuator 600/600 ohm (LEMO stereo balance in/out)→( Balance 2Hot in ) British Western Electric Transformer with LEMO connection BOX (Unbalance out) → Qua22＋QuadII×２ → Tannoy 12" Silver in Canterbury bass reflex corner cabinet ×２
＊The interface cables ( USB, line and speaker ) are made by vintage 50s Western Electric cable and wire.
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1910s British WesternElectric Transformers REP 4013D.
( Primary : Secondary ＝ 1:1.68 ) Two in one body,
Step up use : Secondary are Terminated with 880 ohm resistors for matching to 600 ohm Balance PRE.
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Resource : [ Ссылка ]
