An appreciation of an Ampex 351 tape deck

sigitask

Member
Jan 5, 2020
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Hello,
I'm afraid I no longer have that person's contact information, sorry. I can very highly recommend Dave Dintenfass at Full Track Productions located in Seattle, WA. www.fulltrackproductions.com is his website. He is an authority on Ampex equipment and offers skilled rebuilding services on motors. He rebuilt the capstan motor I use and it is quiet and seems completely new.
The faceplates on the electronics can be resurfaced by a competent machine shop. As I understand it the printing is not applied to the surface. Rather it is stamped into the metal and then paint is applied over the top filling in the graphics. This means that minor surface scratches can be removed by a very light surface removal. I chose a different approach, I carefully polished the surface using Flitz metal polish using cotton balls several times. Then I used a good quality car wax to seal the surface and allow easy fingerprint removal. I also bought a third complete electronics chassis and chose the two best looking faceplates for the final assembly. Along the way I bought a NOS electronics faceplate, but the graphics for the speed control setting were different from the version I was using so I didn't use it.
Thank you for advices! Flitz already bought will see how it will work! Do you selling this NOS electronic faceplate? Maybe it was from 350 or 400 model. I have both need to renovate.
 

sigitask

Member
Jan 5, 2020
43
1
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59
My Ampex rebuild project progression: Reel motors on the place everything aligned and working good.
 

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Mar 27, 2018
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Beautiful! I'm also working with Dave Dintenfass on a 351 project. I am a musician and trying to convert a 300 pr 351 transport to 1/2 inch, using 351 electronics.

Jerome Sabbagh
 
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tapepath

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Feb 20, 2014
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Hi Jerome,
Thanks for your comments! Dave is certainly an authority for all things dealing with Ampex plus he's a generous person. Good luck with your project, are you planning to record yourself with the converted 351?
 
Mar 27, 2018
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3
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Hi Jerome,
Thanks for your comments! Dave is certainly an authority for all things dealing with Ampex plus he's a generous person. Good luck with your project, are you planning to record yourself with the converted 351?

Yes, I am! That's the plan. If all goes well, before the end of the year. Dave has been amazing to work with.

Jerome
 

tapepath

Well-Known Member
Feb 20, 2014
42
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213
Since the playback electronics of the 351 uses an output transformer to provide a balanced output and to reduce distortion I wanted to find out what improvements could be made using a different transformer. I ordered two transformers from the Electra Print company using silver wire for all of the primary, secondary and feedback windings. I also wanted to reposition where the transformer would be mounted, moving it as far as possible from the AC transformer. I used Cardas shielded cable for the output connections to reduce any noise.
 

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Ultrafast69

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Aug 28, 2018
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