https://gearlens.example.com Independent, measurement-led guides to high-end home audio, home theater, Hi-Fi loudspeakers and complete AV system building. en-US Fri, 06 Nov 2026 00:55:39 GMT https://gearlens.example.com/en/blog/small-room-5-1-2-system-plan/ https://gearlens.example.com/en/blog/small-room-5-1-2-system-plan/ A room-first plan for a 5.1.2 system under 20 m2: budget split, channel order, wiring runs, subwoofer placement and the measurements that decide each step. Fri, 18 Sep 2026 00:00:00 GMT system-building https://gearlens.example.com/en/blog/speaker-amplifier-matching/ https://gearlens.example.com/en/blog/speaker-amplifier-matching/ Sensitivity, impedance minima and amplifier current explained with in-room measurements, including the cases where a bigger amplifier changes nothing at all. Wed, 21 Oct 2026 00:00:00 GMT speakers-components https://gearlens.example.com/en/blog/two-channel-hifi-system-chain/ https://gearlens.example.com/en/blog/two-channel-hifi-system-chain/ How to spec a stereo chain from source to speakers: sensitivity, impedance dips, amplifier current, DAC output and seat geometry, with the failure case measured. Fri, 02 Oct 2026 00:00:00 GMT hi-fi-stereo https://gearlens.example.com/en/blog/home-theater-speaker-placement/ https://gearlens.example.com/en/blog/home-theater-speaker-placement/ A numbered placement protocol for a 5.1.2 room: listening triangle, center height, subwoofer crawl and elevation angles, with the tolerances that matter. Mon, 12 Jan 2026 00:00:00 GMT system-building https://gearlens.example.com/en/blog/subwoofer-room-calibration/ https://gearlens.example.com/en/blog/subwoofer-room-calibration/ A repeatable 30-minute routine: find the modal peaks, set phase with a two-seat sweep, then verify the 40 to 80 Hz spread. No golden ears required. Wed, 18 Mar 2026 00:00:00 GMT room-acoustics https://gearlens.example.com/en/blog/frequency-response-measurements/ https://gearlens.example.com/en/blog/frequency-response-measurements/ Why a range without a tolerance means nothing, how smoothing hides resonances, and the four chart features we check before publishing any speaker verdict. Thu, 09 Jul 2026 00:00:00 GMT measurements-method https://gearlens.example.com/en/blog/bookshelf-vs-tower-speakers/ https://gearlens.example.com/en/blog/bookshelf-vs-tower-speakers/ The real difference is bass extension and usable output, not size. Here is the room-volume threshold, the measured SPL cost and the crossover point where it flips. Tue, 03 Feb 2026 00:00:00 GMT buying-comparisons https://gearlens.example.com/en/blog/dolby-atmos-height-channels-explained/ https://gearlens.example.com/en/blog/dolby-atmos-height-channels-explained/ What a height channel actually is, why elevation angle matters more than speaker count, and the ceiling conditions that make up-firing modules fail. Tue, 07 Apr 2026 00:00:00 GMT home-theater https://gearlens.example.com/en/blog/center-channel-dialogue-clarity/ https://gearlens.example.com/en/blog/center-channel-dialogue-clarity/ Measured effects of height, tilt and crossover on speech intelligibility, plus the placement error that costs 4 dB at 2 kHz in a typical living room. Thu, 11 Jun 2026 00:00:00 GMT home-theater https://gearlens.example.com/en/blog/outdoor-speaker-buying-guide/ https://gearlens.example.com/en/blog/outdoor-speaker-buying-guide/ What IP ratings do and do not promise, why amplifier distance changes the wire gauge, and the three line items that usually double an outdoor audio budget. Thu, 21 May 2026 00:00:00 GMT buying-comparisons