本帖最後由 hgcjeffrey 於 2012-2-19 12:58 編輯

回復 28# yaocc0456


    咁串法係最好....?
    佢而家係2隻D5 VS 1隻DDC?

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Flow rate V.S Head

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Pump Noise Round 1 - Laing DDC 3.2 + Koolance COV-RP400 Top(up to 13v)
http://www.youtube.com/watch?v=OyMA3UCcx3o

Pump Noise Round 1 - Koolance PMP-450S (D5 Strong)(up to 24v)
http://www.youtube.com/watch?v=ZlTMgWm8lkQ

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