![]() Naim Diagrams, Schematics and Service Manuals - download for free! Including: naim audio na729 time aligned filter, naim audio nac32 preamp schematic, naim audio nap250 power amplifier schematic, naim nap250 output board. Working full. My opinion: the sound is strange: almost one of the best cdp i have lissen. Defect was a faulty opamp (is the firt time for me find a very simple and anomalous leakage). Sobstituted the opa604ap with opa627bp (more dark sound and better treble, bass with enormous difference in positive). The circuit is very simple. The na-cd vs cd-650 half tuned, and cd150 fully tuned is a bit step up, some armonics is lost maybe. Cd150 with nos convertion and fake SRPP AD825-6524 sound more armonics. The decision very difficult now is if the nos convertion is better and if the opa replacement is the better way. Tomorrow hard listening (today 34°C and 100% rh)!!! Naim Service and Accessories Price List Effective September 2017 Our servicing is renowned for being very detailed and precise, and has evolved to an exceptional level.ALL serviced items are fully evaluated for functionality and performance by listening to them with a variety of music. Our Service Manager and Co-Founder Chris West applies his 37 years of listening experience (everything from vintage Naim systems to the current Naim ranges) with Naim based systems in home environment listening rooms. We carry out these tests concurrent with the final refinements of the equipment (e.g. Wire loom dressing) – followed by a final listening test with the equipment re-cased. Whether it's a thirty plus year old vintage Naim system, more recent equipment from the legacy ranges, or current Naim equipment that we’ve restored, we believe our extensive care and testing has ensured we maintain 100% customer satisfaction! We use factory fresh parts, assemblies, and upgrade kits, and we stock a wide variety of items ready to deal with our expectations for the equipment we service. In addition our range of Ultimate Upgrades for legacy kit (Chrome Bumper and Olive era) provide further improvements extending the already very good restored performance level. We specialize in full restoration of Naim equipment. Our rebuild prices include many adjustments and operations to optimize performance, longevity, and appearance and we are intent on getting you the best possible sound from your system. AV Options has over $50,000 invested in the same precision test equipment and tools Naim utilizes at the factory in England Our process: On the bench we thoroughly clean the equipment inside and out. Externally, we scrub cases clean and deal with blemishes by using the appropriate touch up paints. Internally, when the old parts and boards have been removed – dirt, old thermal heatsink compound and dust are scrubbed or blown away. Knobs are removed cleaned and reset. Fascias are cleaned and detailed and returned to their full lustre. If not being replaced, rear panel DIN sockets and RCA jacks are cleaned and detailed. Uniquely, we have a rare cache of original Naim fascias and rear labels in 'as new' condition that we are retaining for equipment sent to us for restoration. When circuit boards are stripped of parts to be replaced, they are cleaned of any accumulated dirt before they are rebuilt. Wiring terminal pins are cleared of old solder and fully cleaned using solder flux solvents. This prepares them for a high quality soldered wire joint during reassembly. The same solvent is used to clean the solder side of the board after the new parts are fitted to avoid long term corrosive effects on board plating and solder joints. To prevent noise and signal losses we use our own techniques to carefully clean, polish, and remove residues during restoration of internal parts that are unobtainable e.g. ALPS select switches in 72 & 32 preamps that can only be cleaned by complete removal and disassembly. Gold plated board mounting pins are also cleaned (and left residue free).
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January 2019
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