Ok thanks.
Ok thanks.
“Music has always been a matter of energy to me, a question of fuel. Sentimental people call it inspiration, but what they really mean is fuel. I have always needed fuel. I am a serious consumer. On some nights I still believe that a car with the gas needle on empty can run about fifty more miles if you have the right music very loud on the radio”
Hunter S Thompson
Location: Nothamptonshire
Posts: 164
I'm Sharif.
Jerry I had a problem with the Thorens TP90 arm with hum using the GP390.
It turn out to be the earthing between the shaft and bearing in the arm pillar, it was reading about 12 ohms my only conclusion was there must be some corrosion between the different metals. The only way to solve it was to adding a wire between the bearing shaft and the pillar.
Just a thorough with no music playing and the volume turn up, does it still hum when you place your hand near the tonearm?
Sharif.
Location: gone
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Thanks Sharif
I've plugged the output of my phonostage into a Behringer DEQ2496 so I can see what is going on with the hum.
Main hum output is tightly centred at 50Hz - so mains earthing of some sort, I guess.
But there are also hum/buzz components 300-500Hz or so and some broader band lower level buzz in the region of 1-2KHz.
The hum increases when the cartridge is over the platter - whether the turntable is powered up or not. Magnetic effects from the direct drive motor?
But the main issue is the 50Hz hum - and a notch filter on the Behringer gets rid of that without noticeable effect on the music. The other noise is almost always not discernible when music is playing.
.
Location: gone
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thought I'd try the direct attachment doohickey rather than use photobucket ...
Coo, it worked.
.
Have you only got one screw holding that cartridge in?
Marco.
Main System
Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.
Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.
Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.
CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.
Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.
Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.
Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.
Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.
Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.
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And there was me thinking you wouldn't notice.
Damn vinyl setup/spares box is 80 miles away. I was lucky to have 1 screw that fitted.
.
Location: Middlesex, UK
Posts: 4,482
I'm Alex.
I have no experience of the Philips ceramic cartridge, but at the risk of being of being repetitive, I love the Philips GP range of magnetic cartridges. Hardly anyone mentions them.
Spendorman
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Oh my god! There's nothing wrong with the bidet is there?
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Even the head of the bolt doesn't look tightened - it is way above the headshell.
Sorry Jerry, but...
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