 first rough incoming check |
 quality check with detailed cabinet checklist to start |
 We inspect each and every cabinet in detail, referring scrupulously to the vast number of points in our specification book. As it turns out, our joineries don't have it easy: our examination is so rigorous that almost invariably a part of each delivery, typically 7% to 10%, is sent back. |
 After examination, the cabinets are carefully wrapped up, protected and stored. |
 Several parameters of each incoming part and component is measured and compared against Peter´s reference part. Drivers like tweeters in particular are subsequently assigned to appropriate categories. Drivers not meeting our standard due to specification book are sent back to the supplier. |
 For each of the remaining categories of the drivers we retain, we build crossovers in our manufacture. |
 These crossovers are modified in component values to match the drivers perfectly, thus attaining the same total result achieved in the reference speaker. |
 The terminal block forms a direct connection to the speaker terminals with no additional wiring. The elimination of transition resistance improves the trans¬parency and microdynamics for a naturally effortless sound quality. |
 This direct connection is not only screwed, but additionally totally soldered. |
 Reflex ports are carefully attuned to the exact length, which determines the correct resonant frequency of the port-cabinet-driver system. |
 After the cabinets underwent another detailed check devided by four priority zones under strong light detection, the prepared parts for the rear side, like the terminal blocks and the reflex pipes are implemented. |
 To withstand the very high pressure in the cabinet, our port tubes are screwed to the cabinet, absolutely the only way to ensure the solidity required. |
 Two compressor air-driven screwers per production batch provide for efficiency. |
 intermediate check of finished rearside [2535] |
 MOZART´s frontside to be prepared |
 brass logo positioning |
 To bring out MAHLER tweeter´s maximum performance, it is decoupled from the cabinet using a securing and damping silicone system. |
 The elimination of screws or bolts to secure the tweeter, which would establish direct cuppling to the cabinet, allows the tweeter to reveal the most ethereal qualities of music. |
 HAYDNs waiting for measuring torture |
 A second complete reference speaker, which has absolutely the same measurements as Peter´s final reference speaker, exactly replicates the intended sound. Each newly manufactured speaker must be identical to this second point of reference, down to tiny tolerances that have been defined by the designer through listening tests. [2599] |
 To avoid variations due to changes in temperature, humidity, and minor measuring equipment drift, the reference speaker is measured only minutes before the newly manufactured speaker is measured. |
 Specially trained technicians compare and study the levels of frequency response, impendance curves and waterfall plots (to brack down resonance). |
 As a result of our determinations, we make adjustments to optimize some of the speakers (typically 15%) with post-processing (e.g. complete driver replacement). |
 Judging exactly which of the parts requires post-processing to achieve the perfect sound requires exacting skill and considerable experience. |
 We utilize one of the best and most expensive measuring systems available, a computer based high tec analyzer from Germany. MAHLER requires two of them simultaneously. |
 The same serial number is given to both speakers of a pair. |
 When the speakers have been manufactured and measured, the last - and for our customers most important - step before shipment takes place: |
 each speaker is examined by two specially trained and qualified staff inspectors armed with a detailed overall quality checklist of more than forty points. |
