Free Dual CS-512
- Thread starter theCOOP
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theCOOP
Well-Known Member
So this happened today!
Looks like the stylus says Empire 1(?). Can anyone ID the cartridge?
The arm-lift lever isn't engaging anything.
About the anti-skate dial: there's the upper 0-3 and the lower "CD4" region. Can someone explain this to me? What's the difference? Prev owner of this has it on the lower region but on the 504 it was on the upper region.
Thanks
Coop.
Looks like the stylus says Empire 1(?). Can anyone ID the cartridge?
The arm-lift lever isn't engaging anything.
About the anti-skate dial: there's the upper 0-3 and the lower "CD4" region. Can someone explain this to me? What's the difference? Prev owner of this has it on the lower region but on the 504 it was on the upper region.
Thanks
Coop.
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h3ll0
Active Member
The Empire Cartridge is the thousands of the same cartridge different model number, model. Started off life as the REX series 66E/X or Empire 2000. Nice cartridge ask member wualta for more info about it. I have one myself the Empire 1200 ED, same cart.
The CD4 region of the anti-skate is for the CD-4 quadrophonic format or 4 separate channels.
The CD4 region of the anti-skate is for the CD-4 quadrophonic format or 4 separate channels.
theCOOP
Well-Known Member
This is a 521 by the way, not a 512, if that even exists.
Thanks for that.yes, I must agree this sounds incredible!!!!!!!!
The auto feature isn't work in, or more specifically, the arm raises but doesn't move over to the record. At the end, it raises but doesn't go back to the rest.
As far as the arm-lift joystick goes, it is completely intact. But the metal arm that it is supposed to press against doesn't return to the up position so therefore the joystick isn't actuating it.
Otherwise...great turntable, incredible sound!!!!!!!!
Thanks for that.yes, I must agree this sounds incredible!!!!!!!!
The auto feature isn't work in, or more specifically, the arm raises but doesn't move over to the record. At the end, it raises but doesn't go back to the rest.
As far as the arm-lift joystick goes, it is completely intact. But the metal arm that it is supposed to press against doesn't return to the up position so therefore the joystick isn't actuating it.
Otherwise...great turntable, incredible sound!!!!!!!!
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theCOOP
Well-Known Member
I brought home a 504 Saturday. Cheapie cartridge though.
The cart in the 521 is in fact an Empire 4000 XL I
HTHMAN
Super Member
It appears that that TT has scales for anti-skate based in stylus shape. There is a conical, elliptical and CD4(quad) range on the dial.
Kranky
Member
Agree. My 510 with Shure M91ED sound almost as good as my lamented Rega P25 with Clearaudio Aurum Beta cartridge. In fact, I like the table better than the Rega. I prefer the semi-automatic of the Dual to the fully manual system of the Rega. If I upgraded the Shure to a Clearaudio or something similar it would be better sounding, in my opinion.
theCOOP
Well-Known Member
Just hooked up the Sansui AU-101 and it sounds great! Volume knob is pretty scratchy when turned so it needs to be cleaned.
Took a risk today on a Marantz 1060B at the thrift shop. It's really Dortmund dusty but appears to be scratch free. Unfortunately the system selector know/switch seems faulty. If I flick it the red poker light comes on and a bit of sound momentarily. So it's something I won't mind tearing into. Mayne it's just dirty.
Took a risk today on a Marantz 1060B at the thrift shop. It's really Dortmund dusty but appears to be scratch free. Unfortunately the system selector know/switch seems faulty. If I flick it the red poker light comes on and a bit of sound momentarily. So it's something I won't mind tearing into. Mayne it's just dirty.
theCOOP
Well-Known Member
Night before last, I adjusted the pitch again while in 45rpm. It adjusted a bit then seemed to notnrespond either direction.
So last night I was playing a secondnornthird album and the speed plummeted on its own:/ so I tried the pitch control gently and it worked. It's as if the belt stretched and eventually the other end freed up or something under tension.
Strange?
So last night I was playing a secondnornthird album and the speed plummeted on its own:/ so I tried the pitch control gently and it worked. It's as if the belt stretched and eventually the other end freed up or something under tension.
Strange?
bangsezmax
Turntable Whisperer
The pitch controls on those belt drive Duals are wonky as all get out.
The knob turns a little toothed belt (which stretches and stops working and is no longer available).
On the other end of the little toothed belt is a wheel that moves a bracket up and down (the bracket is plastic and has a weak spot where it rides up and down on a pin).
The bracket moves a little cone-shaped gidgy up and down on some accordion-like flanges that increase the diameter of the belt pulley (this whole action can get sticky over time).
Bottom line, if you can get it to work at all, count yourself lucky. They're a bitch to rebuild. Whatever you do, don't keep cranking on the pitch control once you get to either end of the travel. That's how those brackets get busted.
The knob turns a little toothed belt (which stretches and stops working and is no longer available).
On the other end of the little toothed belt is a wheel that moves a bracket up and down (the bracket is plastic and has a weak spot where it rides up and down on a pin).
The bracket moves a little cone-shaped gidgy up and down on some accordion-like flanges that increase the diameter of the belt pulley (this whole action can get sticky over time).
Bottom line, if you can get it to work at all, count yourself lucky. They're a bitch to rebuild. Whatever you do, don't keep cranking on the pitch control once you get to either end of the travel. That's how those brackets get busted.
theCOOP
Well-Known Member
Great advice, thanks for sharing.
Apparently this TT hadn't been used for 10 years. Likely a little sticky, hense all the 'automatic' functions not working properly. I didn't ask previous owner what happened to all his vinyl :/
I saw some pictures this week about the way the pitch is controlled on the bracket end so I understand what you're talking about.
Too bad the belt is no longer available, but I read where somebody adjusts pitch manually with the platyer removed so I guess it's not a total loss.
bangsezmax
Turntable Whisperer
What I've done on a Dual 1257 in lieu of the toothed belt is ordered a SCC4.6 from Voice of Music and then used an exacto knife to cut it concentrically (you end up with an inner and outer belt when done). Then use the outer belt (with the rough edges where you cut on the inside). This gets a decent grip on the wheels. It's not perfect, but it has worked for me, at least on a 1257.
theCOOP
Well-Known Member
Thanks for that. I've taken some time to pull the TT out of the base. Luckily the belt is fine, pergaps perfect.Just need to be gentle with it.
Trying to figure out how the up/down lever works and how the full-automatic works.
The up/down lever is fully intact but isn't contacting g the bar that it is suppose to. It's as if that bar is already/always in the up position.
The TT will start like the 504 when you just use the arm but at the end it tries to returning but it just lifts up, won't swing over to its resting spot by itself. If it has already started this cycle, moving the arm manually is a ski g for trouble.
Alternatively, when trying to start it 'automatically', the arm lifys and drops bit doesn't swing over to the record.
I SEE the arm running under the clear yellow wheel (function wheel?) Which I thing is responsible to moving the arm, but can't see what its supposed to engage.
Everything looks intact and perfect.
Trying to figure out how the up/down lever works and how the full-automatic works.
The up/down lever is fully intact but isn't contacting g the bar that it is suppose to. It's as if that bar is already/always in the up position.
The TT will start like the 504 when you just use the arm but at the end it tries to returning but it just lifts up, won't swing over to its resting spot by itself. If it has already started this cycle, moving the arm manually is a ski g for trouble.
Alternatively, when trying to start it 'automatically', the arm lifys and drops bit doesn't swing over to the record.
I SEE the arm running under the clear yellow wheel (function wheel?) Which I thing is responsible to moving the arm, but can't see what its supposed to engage.
Everything looks intact and perfect.
Attachments
theCOOP
Well-Known Member
More pics
Sticker inside this 521 says "Dual 504". Clearly it was never a 504. I opened up the 504 and it's bare bones.
I assume that gold anodized switch that the audio cables come out of are the audio-interuptor switches?
Sticker inside this 521 says "Dual 504". Clearly it was never a 504. I opened up the 504 and it's bare bones.
I assume that gold anodized switch that the audio cables come out of are the audio-interuptor switches?
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Several years ago I picked up a 521 rescue project. The cue arm mechanism had snapped off under the deck, autofunction didn't work (missing steuerpimple), missing pitch belt, and and it popped the speakers when it shut off (bad anti spark capacitor). Fortunately, they were all fairly easy fixes and I still have the Dual as a spare. It's been very reliable.
I used a small length of wire installation to replace the steuerpimple.
I ended up using an O ring from Ace hardware as a substitute for the pitch belt. It's probably not as precise as the cogged belt but once I have the pitch set, it doesn't need readjusting very often.
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theCOOP
Well-Known Member
I didn't find a suitable piece or wire from which to harvest a steuerpimple but somebody somewhere used a piece of the tubing inside a ballpoint pen. I carefully selected a bit and having not seen any steuerpimple already laid out on it I proceed to eye it up and cut a piece off the empty (I cannot stress this enough!!) end 
The result...thankfully I have auto return-to-rest which is most important. But for the time being? "Start" drops the head on the label. Perhaps the steuerpimple is too long (not slipping as it should).
Now the mute switch :/ what good is auto off if it doesn't do it quietly? Or is the problem the aforementioned anti-spark capacitor?
Still haven't figure out why the lift-bar isn't returning to lowered-position against the underside of the lift lever.
The result...thankfully I have auto return-to-rest which is most important. But for the time being? "Start" drops the head on the label. Perhaps the steuerpimple is too long (not slipping as it should).
Now the mute switch :/ what good is auto off if it doesn't do it quietly? Or is the problem the aforementioned anti-spark capacitor?
Still haven't figure out why the lift-bar isn't returning to lowered-position against the underside of the lift lever.
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hi*ball
Records & Coffee
That's strange that you find the 504 label inside. The 504 has no auto return. At end of play the platter stops and the arm just lifts.
