Peerless DX20BF00-04 RAW Frequency Response Fig 1 – Mic at 24 ins, tweeter axis. Impulse Window = 5ms. No Smoothing. Baffle Width = 5″. Peerless DX20BF00-04 Frequency Response at 2.6kHz (24dB/oct)… Read more >
michael chua
April 22, 2019
HIFI DRIVERSDX20, Horn, Peerless, Tweeter
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Fountek NeoCD3.5H NeoCD3.5H Frequency Response (Baffle Width = 6.75″) Fig 1 – Black plot = RAW. Red plot = 2.6kHz (24dB/oct). Mic 1 meter, on axis. Impulse Window = 5msec…. Read more >
michael chua
February 19, 2019
HIFI DRIVERSFountek, NeoCD3.5H, Ribbon, Tweeter
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Heil AMT Tweeter There are different models of AMT (Air Motion Transformer) tweeters by Heil. The one featured here was used in the ESS Performance Series PS-920 and PS-820 loudspeakers…. Read more >
michael chua
February 15, 2019
HIFI DRIVERSAir Motion Transformer, AMT, Heil, Tweeter
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Audax HM130C0 – 5.25″ Carbon Fiber Cone Midwoofer Active Bi-amped The Audax HM130C0 is the most expensive midwoofer that I have. It cost close to $100 each which to me… Read more >
michael chua
February 4, 2019
Drivers Evaluation, HIFI DRIVERSAMT, Audax, Carbon Fiber, Heil, HM130C0
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the KR65 – 6.5″ Kevlar Cone Midwoofer Active Bi-amped In this test, I shall start off with a proprietary 6.5″ woofer, the KR65. I had a few hundred made to… Read more >
michael chua
January 30, 2019
Drivers Evaluation, HIFI DRIVERSKevlar, KR65, PL27TG-35. Premium Line, Vifa
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Dayton PA200-8 with Selenium ST200 Active Bi-amped In June last year, I tested the Dayton PA200 with the Pyle PDS442 compression driver. This time round, I will match the PA200… Read more >
michael chua
January 20, 2019
Drivers Evaluation, HIFI DRIVERS, PRO DRIVERS8", Dayton, PA200-8, Selenium, ST200, Super Tweeter, Woofer
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Vifa M11MG-09-08 Thiele / Small Parameters Sealed Box 1.7 liters. F3=116Hz, Q=1.16 Sealed Box 5 liters. F3=100Hz, Q=0.90 Sealed Box 10 liters. F3=98Hz, Q=0.83
michael chua
January 17, 2019
HIFI DRIVERS4", M11MG, Midrange, Vifa
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Vifa M11MG-09-08 4″ Midrange Here is another driver in my collection. It is as old as my PL11MH-09-08. All these years, it was in storage. I never got down to… Read more >
michael chua
January 17, 2019
Drivers Evaluation, HIFI DRIVERS4", M11MG, Midrange, Vifa
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Vifa PL11MH-09-08 Premium Line 4″ Midrange I have this Premium Line 4″ midrange since the late 1990s. At that time, Vifa was still made in Denmark. All this while, it… Read more >
michael chua
January 11, 2019
Drivers Evaluation, HIFI DRIVERSMidrange, PL11MH, Premium Line, Vifa
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Tang Band W6-789E Thiele & Small Parameters Thiele & Small Parameters (before Break-in) Ported Box=20 liters • Fb=45Hz • Q=0.68 (DATS x0.75) Ported Box=24 liters • Fb=45Hz • Q=0.65 (DATS… Read more >
michael chua
January 2, 2019
Drivers Thiele & Small, HIFI DRIVERSTang Band, W6-789E, Woofer
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