See above post
The official Fairchild 412 registry thread!
- Thread starter Sam Cogley
- Start date
Earless One
Member
I think that it's a beautiful combination! I don't run it all the time, but I really enjoy listening to older records using the Fairchild/Empire/Shure.
There is a felt mat (I think it might have been for a British table, maybe Rega or Pro-Ject) that shows up now and then on eBay that actually fits on the 412 platter outer diameter. It's a hair under 11.5", if memory serves. You would have to trim the center opening if you want to use the pop-up 45 adapter, and it probably wouldn't hurt to tack it down with some removable spray adhesive, since the 45 adapter doesn't sit up to hold it in place like the Thorens TD124 or the Rabco ST-4. The original mat was a foam piece that both stuck pretty well to the platter and had a nasty habit of decaying into a tar-like gooey substance.
adnick
Addicted Member
For some reason the system didn’t alert me to your post and yea use a 3009 non improved…..
Andy
doug s.
Super Member
i never saw this either. not sure if the 412 platter is similar to my 411, but this mat fits quite well on mine:
https://www.ebay.com/itm/326120273541
doug s.
FreedomJazz
Member
Hello guys, appreciate very much is someone can solve a doubt of mine about the Fairchild 412-1B, this specific model is also capacble of operate in 33RPM and 45RPM? I'm a litte in doubut if I will buy the one that I have acess to buy it, I have a lot of 45's too, and for what I understood, this table was primarily designed to be a single speed 33RPM only, but appears that there's a external acessory that you can buy, in order to make it to operate in 45RPM aso.
This external speed controled device can be used with the 412-1B? it's too much difficult to install? how exactly the device works?
Many thanks. best regards!
This external speed controled device can be used with the 412-1B? it's too much difficult to install? how exactly the device works?
Many thanks. best regards!
bob smog
Creebling at the Turntables
Some 412s have a mechanical device to switch between 2 different drive pulleys to get 33/45. Very fiddly to get both speeds accurate.
The 412-D used an amplifier and oscillators to generate frequencies for 33/45/78.
I’m aware of several devices that generate the frequencies using solid-state, but can’t comment on their performance. Would be curious about noise, since they are like using stepped waveforms to simulate a sine wave.
The 412-D used an amplifier and oscillators to generate frequencies for 33/45/78.
I’m aware of several devices that generate the frequencies using solid-state, but can’t comment on their performance. Would be curious about noise, since they are like using stepped waveforms to simulate a sine wave.
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FreedomJazz
Member
Hello to all, almost bought a NOS Fairchild 412-1B, (threre's one still in the box on the Reverb market place), but after check the infos on this thread, and read the manual on the 412-1B (that says: this turntable is a single speed unit degigned for those who desire the ultimate high quality transcription table, whose primary interest in 33RPM long playing records), I gave up of buying, as I have a lot of 45PRM 7"and also 12"singles 45RPM that I love play.
I thinis is particiular model on Reverb market place is from the 60s.
Appears that all Fairchild tables that are not the 421-1 variations are extremely rare, thats correct?
and the 412-2, 412-4 (valve electronics for change speed), and 411, are the ones with possibilities of 33RPM and 45RPM, that's correct?
Thanks!
I thinis is particiular model on Reverb market place is from the 60s.
Appears that all Fairchild tables that are not the 421-1 variations are extremely rare, thats correct?
and the 412-2, 412-4 (valve electronics for change speed), and 411, are the ones with possibilities of 33RPM and 45RPM, that's correct?
Thanks!
FreedomJazz
Member
If anyone have interest in buy a NOS 412-1B, check the one on reverb market place, great price too.. by the way, the info on the manual that I read, is on the manual pictures of the table that the seller uploaded the first page.
If anyone have the complete manual, appreciate very much if you can share in here, I would like to see if the manual says about possibilities of 45RPM play.
Many thanks to all for this thread!
If anyone have the complete manual, appreciate very much if you can share in here, I would like to see if the manual says about possibilities of 45RPM play.
Many thanks to all for this thread!
The 412-2 is two-speed, with a belt-moving mechanism. 412-4 is the four speed electronic drive unit, and is exceedingly rare. My best guess from the handful of serial numbers I've run across is that less than 100 -ED units were built. It doubled the cost of the 412-1. The 440 is also a two-speed deck, using the same platter and bearing as the 412, but without the damping material under the platter (from what I've seen, at least).
The 411 was the 412-4's predecessor and is a rather different beast, using multiple idler wheels. It was problematic, only a handful were made, and at least a couple of them were exchanged by Fairchild for 412-4s due to customers being unhappy with the 411 (documentation exists to that effect).
The 412 Basic Chassis and 412-1 (same thing, different label) had the deep chassis that could have the 412-ED unit bolted in to make it a 412-4. The 412-1A had a shallow chassis and retained the Papst motor. The 412-1B reverted to the "Borg Death Cube" synchronous motor used in all sorts of things in the 50s and 60s, and which had previously been used in the 411. All told, they built far less than 20,000 411 and 412 models. I have no idea how many 440s were made.
412-2 was the two-speed unit with the belt changer mechanism.
412-4 is the name of the assembly of a 412 Basic Chassis (412-1) and a 412-ED.
doug s.
Super Member
here's an update to the saga of my 411. the stock cloth belt size is 39.25" i tried two solid belts from mcmaster-carr - 39", which fit. but the adjustable idler wheel which controls the 3 different speeds, was too close to the platter, and it rubbed on the cover. so, i then tried 40", and yes, it was too big. waste of money. i don't think mcmaster-carr would be able to special order me a special 39.25" belt; the available sizes are 1" increment only. but at this point, that's ok. i finally got one of my rubber belts to work, and the 33.33 speed is rock-steady. (i don't know or care about the 45 & 78 speeds.) now i just need to sort out the tonearm. i have the parts to repair the russco ta-12 (rebranded micro-seiki ma-101), but i also have a few other arms i could mount - sumiko premiere ft3, o-l modded rega rb250, signet sk35, empire 990. but do i really want to dismantle my mkv-spec'd oracle delphi w/o-l silver taper arm and dc motor kit? hmmm. maybe i need to clear our some more room...
doug s.
doug s.
DynamoDave
New Member
Hi Everyone,
New to Fairchild 412 thread and to Audiokarma - thank you! I have read through all the pages here and others but as a complete audiophile novice not sure what my next step is. I got this wonderful table but the speed is 25 RPM. I got a new belt (FRL), put new oil in the well but not sure what my next step would be. I have read that cleaning out the motor (have never done that) may help but I am not sure if it would correct that degree of slowness. Does it need a new capacitor? Thank you all so much for your help! Dave
Attachments
adnick
Addicted Member
Welcome Dave 
Hard to diagnose a speed issue remotely but a couple of questions:
Assume you tried adjusting the intermediate pulley?
‘Did you replace both belts?
With the platter belt off did the platter spin freely?
Does the intermediate pulley spin freely?
Others will probably mention things I’m not thinking of ….
Andy
Hard to diagnose a speed issue remotely but a couple of questions:
Assume you tried adjusting the intermediate pulley?
‘Did you replace both belts?
With the platter belt off did the platter spin freely?
Does the intermediate pulley spin freely?
Others will probably mention things I’m not thinking of ….
Andy
DynamoDave
New Member
Hi Andy,Welcome Dave
Hard to diagnose a speed issue remotely but a couple of questions:
Assume you tried adjusting the intermediate pulley?
‘Did you replace both belts?
With the platter belt off did the platter spin freely?
Does the intermediate pulley spin freely?
Others will probably mention things I’m not thinking of ….
Andy
Thanks so much for writing and for your welcome! I am not sure how to adjust the intermediate pulley. The inside belt feels soft. It slips if I give it a tug but when the motor is running I do not see it slipping and the inside pully appears to turn 1:1 with the motor. Maybe I should get a short belt to replace? The platter spins freely with the belt off. With best wishes. Dave
doug s.
Super Member
isn't the uk power at 50hz? even if using a step-down transformer, unless my math is backwards, it will definitely run slower. my calcs show 30rpm if it were run on 60hz power; still too slow, but getting closer to what it should be.
doug s.
DynamoDave
New Member
Hi Doug, thanks so much for writing. It says 60Hz on the motor casing. I am in the U.S. unless I am misunderstanding your question about UK power. Was this specific table made for the British market? I ordered a short belt to see if that helps. With best wishes. Dave
doug s.
Super Member
wow, my bad; so sorry. not sure what i was thinking that gave me the idea you were in the uk.
doug s.
DynamoDave
New Member
Thanks so much, Andy and Doug. Must have been my writing with a British accent 
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