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Ian F

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About Ian F

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    VICTORIA
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    Australia
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    IAN

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  1. Andy you love splitting hairs don't you? There are eight electrolytics in the PM6003 stereo phono preamp including two PS decouplers C121,C122.Your count has omitted caps C109 and C110 -the feedback coupling caps-just as critical if not more so and clearly audible when an upgraded cap such as Silmic or Blackgate is used.As to your question "who on earth uses electrolytics?"Answer-just about everybody unfortunately-there's little alternative in most SS circuits short of going down the DC servo path which has its own set of compromises .In my experience simpler circuity with a minimum of couplin
  2. As an example the Marantz PM6003 has six coupling electros in the phono stage alone including the feedback cap.A 220uf film cap aint gonna fit! Using supposedly superior film caps is just another urban myth. I've tried most of them including the megabuck variety.Unfortunately ALL caps have colouration just different flavoured varieties thereof.A simple straight wire bypass test easily verifies that.
  3. Just about any main stream manufacturer of affordable gear like Marantz.Their amps are full of 'em albeit nicer sounding ones like Silmic.
  4. In my experience any audible difference between well set up opamps is fairly subtle.There's a series of uploads on YouTube featuring most of the popular opamps.The sound quality is quite reasonable unlike most YouTube audio demos.Even using quality headphones it's a challenge to pick any significant differences let alone the night and day improvements some folk are proposing..
  5. The LM833 is a bit of a shocker performance wise.In Samuel Groner's mammoth test of opamps he found the LM833 had 2-3% distortion at higher frequencies and the heavy loading typical of phono preamp feedback networks.
  6. The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134.The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset.Close to zero DC mv at its output would enable removal of the dreaded electrolytic coupling caps which will definitely lower colouration and improve sound quality.
  7. Further information: Classic 9inch low mass (approx 5g) tonearm,perfect for high compliance MM cartridges.This is the improved version with black carry arm.Complete with damping trough,handbook,cable etc.I don't have the original box but it will be carefully packed for safe transport. Photos: PLEASE READ If you include any reference to pricing whatsoever in this section (excluding RRP), your ad will not be approved If you are advertising multiple items, you must post one bulk price only, or post seperate ads for each item If you don't include photograph
  8. Further information: On offer is a refurbished TD160 ready for your selection of tonearm. There's a new top-plate,dustcover,armboard etc. Comes with a Rega armboard,plus an original SME board if preferred. Also includes heaps of spares-motor,springs,subchassis etc. Photos: PLEASE READ If you include any reference to pricing whatsoever in this section (excluding RRP), your ad will not be approved If you are advertising multiple items, you must post one bulk pr
  9. https://www.ebay.com.au/itm/Thorens-TD150-TD160-etc-Power-Supply-PCB-Upgrade-Linn-Ariston-REV-5-0/114629122017?hash=item1ab06d97e1:g:ErcAAOSw5ZtaUPxO
  10. If you're comfortable working with 230v AC there are PCBs available on eBay to update the Thorens supply.These have the benefit of an inline fuse plus suitably rated X2 mains capacitors.You need to specify which turntable/motor you have in order to get the correct phase capacitor and dropping resistor.The traditional Thorens earthing arrangement uses a separate earth lead connecting back to the amplifier.This is less likely to lead to earth loop and hum problems.
  11. Linn turntable gurus used to tie back the Grace cable with a cable-tie and then direct it to a P-clip positioned midway along the rear of the LP12. I imagine the same trick could apply to the TD150.
  12. Sorry Deano,they were snapped up yesterday.
  13. Too much audio clobber Red,I'm getting snowed under with it all.
  14. Item:KIMBER KAPS Price Range:FREE Item Condition: NEW Extra Info:Pickup in Balwyn
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