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Post A Photograph Of Your Turntable - Page 3

post #31 of 3042

This thread is making me drool. 

 

@John: I've always wondered about tangential arms. Saw a 4002 on Craigslist the other day. Thanks for your impressions!

Gear mentioned in this thread:

post #32 of 3042

DSC_1063NEF.jpg

 

Audioquest PT-6 recordscratcherholderstick with Grado Reference Platinum recordscratcherneedlebox. the Technics EPA-500 arm totally pwns this arm, but considering the disparity in price this should come as no surprise. the arm is only on the deck because the Grado screws dont fit in the slots on the EPA-500 headshell. grumbles.

The amplification of the signal from this cartridge is handled by an older Radio Shack DJ mixer which I have found to have a very good compliance to the RIAA equalization standard and generally good sound

 

DSC_1068NEF.jpg

 

SME-3012s2

 

In this photo the recordscratcherholderstick looks about 2ft long despite being slightly less than 12" (for what these things cost they should give you the full 12"! The audioquest is also less than 9"! Id expect this sort of "ooh we measure it our own special way that makes it look like 9" on a ruler that makes nikongod look like hes got a tice in his trousers" from a cable salesman, but never a reputable company) Most tonearms are an inch too short. 

 

DSC_1076NEF.jpg

 

A closeup of the Grado recordscratcherneedle

 

DSC_1070NEF.jpg

 

Denon DL103 (the version that doesn't need improving, and hasnt been improved in its 40something years of production) mounted on the SME3012s2. There really is no other way to use this cartridge.

 

The amplification of the signal from this cartridge is done by a phono stage of my own design. Other days I use a cinemag SUT with the previously mentioned radio-shack mixer.

 

DSC_1072NEF.jpg

 

Its got a big rectangular button to start & stop.

it also goes at 33,45,78rpm, with +/-10% adjustment at all speeds. 


Edited by nikongod - 4/28/11 at 11:33pm
post #33 of 3042
Thread Starter 

tumblr_lav5w8cztB1qer5b2o1_500.jpgweird-science.jpg

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Weird Science

Nikongod attemps to create the perfect woman, but she turns out to be more than that.

 

 

 

 

 

 

 

post #34 of 3042
Thread Starter 

ROTOR.jpg

post #35 of 3042
Quote:
Originally Posted by AuralRelations View Post

This thread is making me drool. 

 

@John: I've always wondered about tangential arms. Saw a 4002 on Craigslist the other day. Thanks for your impressions!


 

The thought behind the tangential arm is:  When a master record is (literally) cut from the original (2" tape of course!) master, it is cut literally on a lathe.  While it is a mathematical fact that a true tangential relationship between stylus and groove is achieved only at two points (where the arc bisects the tangent), tracking angle errors occur at every other location.

 

Basically you need a high mass to keep the stylus in the groove, but the increased mass causes greater sluggishness in the movement of the arm (tangential inertia).  In well designed tonearms, the total deviation is about 2-degrees, but even that will distort high frequencies.  The main problem is the tonearm assembly mass causing the stylus to want to skate towards the center.  This also has the added effect (when talking about anti-skating forces) of the stylus being pressed against the inner groove wall and producing unequal signal.

 

When B&O set out to design their new tone arm they had a number of criteria they wanted to meet.  But, basically, they designed an optically triggered DC servo, a super lightweight tone arm, super lightweight stylus, and when finished had a tracking error skew that never exceeded 0.04-degrees (thats FAR less than the 2-degree error allowed by high-end radial arms).

 

The entire turntable is suspended inside the frame, and the tonearm is sprung and pendulum suspended, and physically coupled to the platter assembly.  Move the platter, the tonearm moves too.  All that means that a super warped record SHOULD play fine, but I'm not willing to find out just yet.  It also has the benefit of being able to rap the side of the unit with a good sized hammer, and transmitting NO vibration. 

 

One last note about the BeoGram 4002 (Gram because B&O state this is not a turntable, but rather a Gramophone):  The Beogram 4002 was designed to be obsolescence-proof.  The MMC 6000 pickup cartridge can play CD-4 (Quadraphonic), all matrix, stereo and mono discs.  There is also space in the cabinet for a built in demodulator, but I don't think my unit has that.  It can also be used with an external demodulator (which I found just the other day for $80, but I don't have any Quad discs)...

 

Hope that helps!


Edited by JohnRichard - 5/2/11 at 12:09pm
post #36 of 3042
Thread Starter 

One last note about the BeoGram 4002 (Gram because B&O state this is not a turntable, but rather a Gramophone):  The Beogram 4002 was designed to be obsolescence-proof.  The MMC 6000 pickup cartridge can play CD-4 (Quadraphonic), all matrix, stereo and mono discs.  There is also space in the cabinet for a built in demodulator, but I don't think my unit has that.  It can also be used with an external demodulator (which I found just the other day for $80, but I don't have any Quad discs)...   Wow I will have to check that out!

 

post #37 of 3042

Just won a SL-1200M3D off eBay.  I'll post some pics once I get it all setup.  

post #38 of 3042

DSC00325.jpgDSC00322.jpgDSC00323.jpg

post #39 of 3042

 

RPM1.3bRPM1.3a

post #40 of 3042

Pro-Ject RPM 1.3 Genie
- Zyx RS10-02 Cartridge

- Boston Audio Design Mat 1

 

Not Pictured:

-------------------

Tom Evans Microgroove Phono Stage

Milky Zero Stat

Nagaoka Rolling 152

SOTA Record Cleaning Machine

Various Mobile Fidelity Cleaning Products

 


Edited by sk3383 - 5/4/11 at 8:37pm
post #41 of 3042
Thread Starter 

The turntable photos are getting sexy.

post #42 of 3042

Subbed.

post #43 of 3042
Quote:
Originally Posted by Redcarmoose View Post

The turntable photos are getting sexy.



They've been sexy since I posted.  tongue_smile.gif

post #44 of 3042

The turntable is a Music Hall MMF 5.1 SE and the cartridge is a Clearaudio Virtuoso Wood. turntable copy.jpg


Edited by roadcykler - 5/5/11 at 3:34pm
post #45 of 3042
Quote:
Originally Posted by roadcykler View Post

The turntable is a Music Hall MMF 5.1 SE and the cartridge is a Clearaudio Virtuoso Wood. 



Is that an Onzow Zerodust I spy? How do you like it? I was thinking of picking one up. Cheapest I've seen it for is $50 on eBay.

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