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MGO

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About MGO

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    Sydney East
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    Australia

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  1. I measured the component values on the two boards and found that some of the capacitors where either not in spec or different on the two boards. Replaced the two 2uF that were in parallel with a 4uF Russian MBGO, paper in wax type. These were way off. Added two 10uF K73-16 to sure up the values between the two boards, and put 0.1uF K40Y-9 paper-in-oil bypass caps on all the caps. I look forward to hearing these Alan. Mark
  2. Price is per pair. Three Pairs for sale. All date coded 6131 For sale are these great sounding Western Electric 420a /JW 5755 NOS tubes which when coupled with an adaptor (included) function as a superior 12AX7 or a 12AT7. NB. The height of the tube plus adaptor, to its base, is about 66mm. This is a little taller than the usual 12ax7. They are much better in many ways than other 12AX7s I have tried, including: Mullard, Telefunken, Amperex and any Chinese tubes (Psvane etc). The most obvious improvements came in bass drive and
  3. Telefunken ECC-83 - 12AX7 Ribbed Long Plates Single Tube. The printing was very powdery and and went missing in action. I used this tube in a Ming Da amp for about a year some time ago and just came across it. It was NOS when first bought. No point in its lonely disused existence so up for sale. Telefunken Diamond clearly visible on base - see pic. The halo getter is typical Telefunken as are the ribs on the plates.
  4. These tubes are NOS. Military grade OTK. Dates in the 60s and 70s.
  5. These are in excellent condition and are working perfectly and sound great! Original cones. One speaker is a little faded and its label has come off leaving just its ghost. They are the same as Electro-Voice EVM 12L. I believe that during the Altec collapse, EV and Altec had the same owners. The EVM 12L is still in production as the Classic and Zakk Wylde and is renowned for being virtually indestructible. Joe Bonamassa swears by them as did SRV and many others.
  6. These look terrific with their top of the line ScanSpeak drivers and a bargain. What are those speaker cables you are using?
  7. Rotel Power Amp RB981 and Surround Sound Processor RSP980AX Well known and highly regarded amp in excellent working condition. Power output: 130 watts per channel into 8Ω (stereo), 360 watts into 8Ω (mono) bridged. Frequency response: 10Hz to 100kHz Total harmonic distortion: 0.03% Damping factor: 500 Input sensitivity: 1V Signal to noise ratio: 120dB Speaker load impedance: 4Ω (minimum) Dimensions: 440 x 121 x 327mm Weight: 10.3kg
  8. TMC THE MUSIC CABLE 1m Teflon plug solid copper interconnect and locking RCAs. Bought these recently but found that I cannot get them to fit into my constrained space. This is a very good sounding cable, the mids and highs are very smooth, but still detailed, very well made with pure copper outer but due to the construction, they are very stiff.
  9. I have run these in my Line Magnetic 518 for years without a problem. The 518 uses 6L6 or 6P3P - I've tried both. Here are the spec sheets:WE 420A 5755.pdf 12ax7-rca1962.pdf
  10. Western Electric 420a >> 12AX7 or 12AT7 Tubes with Adaptors NOS NIB Price is per pair. Four Pairs for sale. For sale are these great sounding Western Electric 420a /JW 5755 NOS tubes which when coupled with an adaptor (included) function as a superior 12AX7 or a 12AT7. NB. The height of the tube plus adaptor, to its base, is about 66mm. This is a little taller than the usual 12ax7. They are much better in many ways than other 12AX7s I have tried, including: Mullard, Telefunken, Amperex and any Chinese tubes (Psvane
  11. ATC has had an enviable reputation of being one of the very best speaker makers for some 40 years. The company was started in Australia in 1974 by Billy Woodman who took it to the UK. It has supplied sound systems to many famous performers including Pink Floyd and Supertramp, competing favourably against Altec, JBL, Tannoy etc. ATC now concentrates on studio monitoring systems and high end hi-fi. This C1Ca centre speaker has excellent clear, dynamic sound and is in near perfect condition with just some minor scuff on the back corners. Not visible from the front. Cur
  12. Hello, I'll buy this if still available. Your messaging seems to be full? Thanks Mark
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