jonathan c
Headphoneus Supremus
I have read that Sennheiser used LehmannAudio Linear (pre-SE) in the development / tuning of HD600 / HD650.
I have also read that they demo'd the HD800/HD800S at shows with the Linear.I have read that Sennheiser used LehmannAudio Linear (pre-SE) in the development / tuning of HD600 / HD650.
True for the HD 800. When the 800S was launched in 2015 Sennheiser already had its own headphone amps in production, HDVD 800 and HDVA 600, since 2012.I have also read that they demo'd the HD800/HD800S at shows with the Linear.
I too was worried about the capacitors, but this amplifier has only been used for a few hours a year. I removed the cover and saw if the capacitors visually showed any deformation or swelling. Then I did several audio tests with the V200 (as a verifier) and 16 ohm Sony closed headphones. Closed-back, low-impedance headphones are like having a magnifying glass in revealing electronic problems or other anomalies. From how it has been used I would say that for 15 years or more, this amplifier will definitely not give any problems. That machine you see on the volume knob and the halo that left the paper handkerchief soaked in neutral liquid for glasses (first photo).OK then. I will have to wait and check it out.
So, yours still works perfect? Have you replaced any capacitors or anything else?
Cool. Have you ever thought about getting it upgraded by Lehmann?Anch'io ero preoccupato per i condensatori, ma questo amplificatore è stato utilizzato solo poche ore all'anno. Ho tolto il coperchio e ho visto se i condensatori presentavano visivamente deformazioni o rigonfiamenti. Poi ho fatto diverse prove audio con il V200 (come verificatore) e cuffie chiuse Sony da 16 ohm. Le cuffie chiuse e a bassa impedenza sono come avere una lente d'ingrandimento nel rivelare problemi elettronici o altre anomalie. Da come è stato utilizzato direi che per 15 anni e più questo amplificatore non darà sicuramente alcun problema. Quella macchinetta che vedi sulla manopola del volume e l'alone che lasciava il fazzoletto di carta imbevuto di liquido neutro per occhiali (prima foto).
... did your 'boy' get to set the DIP switches? [They are set in a way that's not diagrammed ...]My boy getting psyched up to put the amp through its paces. Good assistants are Hard to find!
No, at this point he was still psyching up.... did your 'boy' get to set the DIP switches? [They are set in a way that's not diagrammed ...]