Johey Posted January 3, 2013 Report Share Posted January 3, 2013 1) Is it safe to connect headphones directly to the mixed output pin on the baseboard of the MB6582, or should I connect some headphone driver? 2) How can I install a volume control to the headphone jack? Is a normal potentiometer in series (or parallel?) good enough, and if so, what value would be reasonable? I don't need to make it louder, but lower. Quote Link to comment Share on other sites More sharing options...
Hawkeye Posted January 3, 2013 Report Share Posted January 3, 2013 The installed BC547 transistor on the MBSID is not meant as an amplifier, rather a protection for the SIDs - thus the output can only be considered a "line" out. But, as for many line out devices, the output levels were high enough for small normal "ipod" headphones for me. If you intend to use larger headphones with bigger "drivers", I´d strongly recommend to use a headphone amp (which usually also offers volume control). You can reduce volume levels by using a stereo logarithmic potentiometer, of e.g. 10k, 50k, or 100k value. Many greets, Peter Quote Link to comment Share on other sites More sharing options...
Johey Posted January 3, 2013 Author Report Share Posted January 3, 2013 Cool! I want to drive my big phones, so I guess I'd better getting a good driver then. Any suggestions? Thanks! Quote Link to comment Share on other sites More sharing options...
Hawkeye Posted January 3, 2013 Report Share Posted January 3, 2013 (edited) DIYing them can save a lot of bucks for good quality: http://www.head-fi.org/t/537398/list-of-diy-headphone-amplifiers There you´ll find the full spectrum from solid state, hybrids, tube-driven and portable ones :smile: I´ve read good things about the CMOY portable one, it can also be used to properly drive your bigger sized quality phones when you are on road/plane with a tiny mp3 player/phone. It is driven by 4560 opamps, uses two 9v batteries for a bipolar supply with lots of headroom and fits into a metal tin box :-) http://en.wikipedia.org/wiki/CMoy Edited January 3, 2013 by Hawkeye Quote Link to comment Share on other sites More sharing options...
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