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Author Topic: Otari MX-5050BII-2 upgrades  (Read 4559 times)

Offline George Moneo

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Otari MX-5050BII-2 upgrades
« on: December 12, 2011, 10:40:44 AM »
I bought an Otari MX-5050BII-2 several years back hoping to use it, native, for Tape Project tapes.  I had the deck refurbished at an Otari-authorized dealer and had the heads relapped and the other parts checked. Mechanically it seems to work fine, but it's very noisy through to the balanced inputs on my preamp.

Even though economic pressures have prevented me from subscribing as I had hoped, I've decided to keep the machine and tweak it, as inexpensively as possible, for the day when I can finally buy the Tape Project or other master tapes for it. There are other articles on this forum that point to bad links regarding preamp upgrades. Can anyone give me the straight poop on the best way to DIY the Otari electronics? Are there any specialists out there doing these mods for a reasonable (i.e., wife-friendly) sum. I'd also like to know more about the upcoming Bottlehead mod and what it does. I don't want to throw good money after bad, though. If it's not worth the expense, so be it. 

Thanks in advance.

Offline Listens2tubes

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Re: Otari MX-5050BII-2 upgrades
« Reply #1 on: December 12, 2011, 09:10:01 PM »
Hi OE,
      Welcome to the forum. We post our real names here.  I have an MX5050B2-2 I love. I am building a Bottlehead Eros for playback. Deck mods were covered in this thread http://www.tapeproject.com/smf/index.php/topic,2037.0.html One question regarding your cables. Are they wired pin 3 hot? Standard XLR cables are usually pin 2 hot. If you have Instruction Manual OS3-3B  see section 2.5.2, page 2-8 for Signal Connections.
Neal - Ampex Fineline F-44, 3 - Otari MX5050BII-2, Revox A77 Mk II , Teac A 4010s, 4070, Sony TC102A, Magnecord 1020, Systemdek IIX/Dynavector Karat 17D2MKII, CEC CD3300 CDP, K Works NanoMax DAC, Van Alsine Transcendence Eight+ tube preamp, Dynaco MkIV amp pair, Paradigm Reference Studio 100 v1