Roberts mic tube preamp project 
In the spirit of fixing what aint broke, we proceed to destroy a perfectly functional Roberts / Akai reel to reel deck.
In the spirit of fixing what aint broke, we proceed to destroy a perfectly functional Roberts / Akai reel to reel deck.
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DSC00375
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DSC00376
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DSC00377
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DSC00399
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DSC00400
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DSC00379
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DSC00380
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Shaved 1/8" off each faceplate and gutted some wood from the box, and some other trimming here and there to squeeze 4 amps in one box!
Shaved 1/8" off each faceplate and gutted some wood from the box, and some other trimming here and there to squeeze 4 amps in one box!
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DSC00391
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DSC00392
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DSC00378
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DSC00393
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DSC00394
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DSC00395
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DSC00396
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DSC00397
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DSC00398
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Working phantom power and input XLR transformer
Working phantom power and input XLR transformer
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Another shot of the phantom power test
Another shot of the phantom power test
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Prototype of a completed unit.  Phantom power with switch on the faceplate, XLR connector, XLR transormer.
Prototype of a completed unit. Phantom power with switch on the faceplate, XLR connector, XLR transormer.
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DSC00413
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4 preamps in action.  The bottom 2 are on the overheads (MXL 990/991 via phantom power), the 3rd one on the snare (sm57), the 4th is on Bills guitar cab (sm57)
4 preamps in action. The bottom 2 are on the overheads (MXL 990/991 via phantom power), the 3rd one on the snare (sm57), the 4th is on Bills guitar cab (sm57)
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DSC00434
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DSC00435
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DSC00439
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dsc00446
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DSC00485
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DSC00486
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DSC00487
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That one on top is my first prototype of a 2 channel unit stuffed into the same chassis
That one on top is my first prototype of a 2 channel unit stuffed into the same chassis
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dsc00968
dsc00968
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