1/12/2024 0 Comments Spl amp reviews![]() ![]() ![]() The front half of the lower section is occupied by a beefy 1375VA toroidal (donut-shaped) transformer secured to the chassis with eight damped screws, to reduce the transfer of vibrations from transformer to chassis. The total noise of all six fans working at maximum speed is a claimed 19dB, ensuring near-silent operation. The m1000’s ground floor itself contains two layers of printed circuits, the lower bunk dedicated to 66 capacitors, each with 1000♟ of energy storage the upper bunk comprises the standby power supply, the inrush-current-limiting relay and limiting resistors, and 34 more 1000♟ caps, for a total of 100,000♟ of energy storage.Įach side panel of the m1000 is occupied by three cooling fans that begin to spin when the amp’s internal temperature hits 131☏ (55☌), and spin faster as the temperature rises. Viewed from the top, each of 12 bipolar power transistors can be seen to be mounted directly to the heatsinks. Between them is a circuit board containing, from back to front, a 120V DC input amplifier, a speaker on/off relay, an HF (>300Hz-300kHz) filter coil output, temperature sensors for the cooling fans, and a DC protection circuit. Two big heatsinks occupy the entire left and right thirds of the upper story. The Performer m1000’s steel chassis is built on two levels. When I did, I realized two things: The Performer m1000 is densely packed with high-quality components, and there’s nothing class-D about it. With such specs claimed for so small an amp, I had to peek under its hood to confirm that it’s not some funky class-D hybrid. SPL claims that the m1000 is quiet, with specs of 123dB signal/noise (A-weighted), 26dB of gain, and a damping factor of >280 (1kHz at 8 ohms). These dimensions are the only thing diminutive about this amplifier, though it weighs 54.7 pounds and is specified to punch out 1000W into 2 ohms, 750W into 4 ohms, or 420W into 8 ohms. The Performer m1000 is a solid-state, class-AB, monoblock power amplifier ($8598/pair, all prices USD)-a charmingly svelte little powerhouse measuring 11ʺW x 8ʺH x 14.75ʺD. SPL currently offers myriad models in their Mastering, Studio, Plugin, and Professional Fidelity lines, the last comprising nine models for high-end home audio: two analog preamplifiers, one with and one without a DAC two headphone amplifiers one preamp-headphone amp one phono stage a standalone crossover a stereo power amplifier and the subject of this review, the Performer m1000 monoblock amplifier. Intrigued by Neumann’s ability to conceptualize from scratch and bring to market outstanding electronic components, Gier asked him to build him a bass preamplifier. By 1983, he’d begun selling his products under the SPL brand, but struggled with distribution until, in 1985, he met Hermann Gier.Īt the time, Gier, who is now CEO of SPL, was taking bass-guitar lessons from a fellow who was endorsing a brand of speakers marketed by SPL’s distributor. This led Neumann to begin the tinkering that ultimately convinced him he could design and build better-sounding products and sell them at prices significantly below those of imported US equivalents. In those days, the US dollar was valued at roughly 3.5 times the deutschmark, and importing US-made studio gear wasn’t cheap. With a deep background in studio mastering, SPL founder and chief designer Wolfgang Neumann got the idea of starting his own company while managing a recording studio in rural Germany in the late 1970s. Sound Performance Lab (SPL) is based in Niederkrüchten, in North Rhine-Westphalia, Germany, and has manufactured professional and home audio gear since 1983. Note: for the full suite of measurements from the SoundStage! Audio-Electronics Lab, click this link. ![]()
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