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Here are some pics of the 5F11 Vibrolux I've been building. The usual suspects in terms of parts: Mercury Magnetics transformers, Mallory 150 signal caps, carbon composition resistors. The speaker is a Weber Classic 10" - alnico magnet. Cabinet is from Mojo. Got the chassis on Ebay, you don't see many 5F11s out there, so I grabbed it when I saw it.
I own a very original 1956 Princeton so I used it as a model and tried to follow the original wiring dress as much as possible. I have center tapped twisted pair filament leads and wired the main filters to one ground and the preamp filter, cathode filters and inputs to another to help keep noise down. I used the same style cloth insulation wiring and wire colors as an original for the most part. It won't fool anybody (not the intent) but it sure has a 50s vibe.
The tubes are old U.S. made. No modern Russian or Chinese tubes here (lol). The knobs are real 50s Kurz-Kasch bakelite knobs, identical to the ones on my Princeton. The on-off switch is from my stash of 50s hardware.
I still need to clean up the wiring to the speaker, have to find my stash of spade connectors, so the speaker leads are a bit jury-rigged for now. Also the original owner of the chassis had put a 9-pin socket where the trem jack should go - maybe he was thinking about making a Tremolux? At any rate, I took it out and just need to plug the hole and put a jack in it.
Sounds pretty amazing, nice bass for a 10" speaker. The tremolo is the bias modulating type, sounds pretty cool. I've only put about 3 hours on it so far.
-Kevin
I own a very original 1956 Princeton so I used it as a model and tried to follow the original wiring dress as much as possible. I have center tapped twisted pair filament leads and wired the main filters to one ground and the preamp filter, cathode filters and inputs to another to help keep noise down. I used the same style cloth insulation wiring and wire colors as an original for the most part. It won't fool anybody (not the intent) but it sure has a 50s vibe.
The tubes are old U.S. made. No modern Russian or Chinese tubes here (lol). The knobs are real 50s Kurz-Kasch bakelite knobs, identical to the ones on my Princeton. The on-off switch is from my stash of 50s hardware.
I still need to clean up the wiring to the speaker, have to find my stash of spade connectors, so the speaker leads are a bit jury-rigged for now. Also the original owner of the chassis had put a 9-pin socket where the trem jack should go - maybe he was thinking about making a Tremolux? At any rate, I took it out and just need to plug the hole and put a jack in it.
Sounds pretty amazing, nice bass for a 10" speaker. The tremolo is the bias modulating type, sounds pretty cool. I've only put about 3 hours on it so far.
-Kevin
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