The HiFi chat, build and modification thread!

I dunno, but always got the impression that Nakamichi are the Klein of the HiFi cassette world, TBH I cannot really see (or perhaps I should say hear) how a Nak can be noticeably better than the 24 HX or (44 HX) Both of these are highly rate and with adjustable biasm, Dolby C and HxPro can record so that playback is close to the original source. I did spend a while on ebay looking at Naks but they are still hugely expensive.

Regarding your days as hifirepairman, what was the common problem with the Denons? Ever recall seeing the problem I described? I can't figure out why it is/was happening. I have the service manual and it appears both capstans are driven using the same belt from one motor and I would expect the first one to be slightly smaller diameter so that it runs slower thus ensuring the tape in between them is under tensions; the first capstan has a weaker spring (by design) allowing tape slippage .... so it baffles me how the tape is getting out and then not getting taken up causing the loop. Hmmmmm....


Billy Vee still alive and kicking

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Nakamichi cassette decks could record up to 22khz onto a metal alvin cassette (CD stops at 20khz) and could load up huge db with very low distortion. They made car players too with the same performance whereas Denon were very mid range along with Kenwood and maybe JVC. Denons' professional stuff was ok but never got into the realms of Sony and JVC pro equipment

I would strip the deck and lube everything. it will be nearly 30 years old and every rubber part will have been affected in some way. Some of the motors will have lost their speed too due to capacitor leakage in their circuit. Some use motors that are precisely controlled via a chip rather than a potentiometer and can lose accuracy. These tend to be un economical to repair without a LOT of work.
 
Access to spindles is virtually non existent with just the cover removed and without further dismembering although i did manage to a drop of light oil onto one spindle.

Been playing some more tapes and the spooling (excess of tape from 1st capstan) seems to occur so far on one sony ucx c90 tape so it is looking like bad tape. It just doesnt make any sense how this can happen (ofcourse this wont happen on a single capstan deck). Most atrange.
 
Sorted it. I took the cassette apart and bent the spring for the pressure pad a tiny amount away from the head so there is less drag on the tape as it passes over the head. After 10+ mins all seems well.
 
Arse, tits and bollocks, been listening to a martin logan spkrs just bought and noticed i am no longer hearing the cymbals on apettite for destruction, im sure they used to be there.

This will have something to do with it. (Will go to docs for syringing but not expecting much)

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Does anybody know where I could get Clarity Cap ESA 250V aside from Hificollective or Falcon Acoustics?
 

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