Latest Posts
Soundcraftsmen PCR800 The Soundcraftsmen PCR800 is one of a kind. It was introduced sometime in the early 1980s, presumably for the hi-fi market. Till today, there’s nothing like it. What… Read more >
michael chua
September 30, 2018
Amplifiersamplifier, Mosfets, PCR, Soundcraftsmen
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AB Precedent 400 Power Amplifier I bought this amplifier on eBay with the intention of restoring it. Upon removing the top, I discovered that it’s possibly the first version. All… Read more >
michael chua
September 26, 2018
AmplifiersAB International, amplifier, Hx200, Mosfet, Precedent 400, Recycle
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Soundcraft GigRac 600 This review is for educational purposes only. Under no circumstances must repairs be attempted on the GigRac 600 unless by a qualified technician. Disassembly is DANGEROUS as… Read more >
michael chua
August 31, 2018
AmplifiersGigrac, Powered Mixer, Soundcraft
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Sparrow-19ST SB Acoustics SB13PFC25-08 with SB19ST-C000-4 Tweeter Active BiAmped The Sparrow-19ST is my fourth attempt with the SB Acoustics 5″ plastic frame SB13PFC25-08 midwoofer. In all my previous designs, I… Read more >
michael chua
July 26, 2018
Drivers Evaluation, HIFI DRIVERSSB Acoustics, SB13PFC, SB19ST
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SB Acoustics SB19ST-C000-4 Impedance SB Acoustics SB19ST-C000-4 RAW Frequency ResponseFlush Mounted • Baffle Width=8-3/4″ SB19ST-C000-4 CumulativeSpectral Decay (CSD) 3.0kHz HPF • 18dB/oct Rise Time = 0.10 msec. Window = 1.3… Read more >
michael chua
July 25, 2018
HIFI DRIVERS3/4", SB Acoustics, SB19ST, Soft Dome, Tweeter
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Solitaire Peerless 830870 PPB Cone HDS 4″ Midrange with Morel MDT29 Tweeter Active Bi-Amped The Solitaire is the result of my quest for a compact satellite speaker. In this design,… Read more >
michael chua
July 23, 2018
Drivers Evaluation, HIFI DRIVERS830870, MDT29, Morel, Peerless
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Albatross I’ve always been uncomfortable with the Dayton DA270-8 woofer. I tried it in a ported and sealed box but to no avail. While it does deliver on the low… Read more >
michael chua
July 22, 2018
Projects10", Aluminum Cone, Bandpass, DA270, Dayton, Subwoofer
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Morel MDT29 Frequency Response Surface and Flush Mounted • Baffle Width=9-1/2″Fig 1 – Blue plot=Surface Mounted • Black plot=Flush Mounted Baffle Width=9-1/2″ • Ported Box=18 liters Morel MDT29 Surface Mounted… Read more >
michael chua
July 21, 2018
HIFI DRIVERS1-1/8", MDT29, Morel, Soft Dome, Tweeter
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Hummingbird Dayton DSA135-8 Aluminum Cone 5″ Midwoofer with Dynavox TD2801XL Tweeter Active 2-way This is the first time I’m working on Dayton’s Designer Series Aluminum Cone (DSA) woofer. From the… Read more >
michael chua
July 17, 2018
Drivers Evaluation, HIFI DRIVERSDayton, DSA135, Dynavox, TD2801XL
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Dynavox TD2801XL Published Frequency Response Dynavox TD2801XL RAW Frequency Response Mic at 24ins, tweeter axis. Impulse Window = 5msec. No Smoothing. Baffle Width=8-1/8″ • Ported Box=7 liters Dynavox TD2801XL •… Read more >
michael chua
July 17, 2018
HIFI DRIVERS1-1/8", Dynavox, Silk Dome, TD2801XL, Tweeter
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