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  1. marcok

    Dbx 128 II

    Just bought a Dbx 128 II . https://www.ebay.it/itm/DBX-Espansore-di-dinamica-Vintage/113962610080?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 The reason is to replace a PL 1000 used in my Dynaco system . PL 1000 will be used with Marantz receiver and PL 700. If I have understood...
  2. marcok

    Speakers for Yamaha 2010 amp

    I need suggestions to choose the approppriate speakers for Yamaha CA 2010 . ( 110 Wpc ) The sound of this amp is " cold " , so I believe that bass reflex speakers are the right choice. Thank you in advance Marco
  3. marcok

    PL 5000 flat band filter

    The system works . Tested with a AKG studio monitor . The value of the pot is not critical . The behavior is always the same : Mono : 8 o' clock Transition from mono to stereo ( approx . from 9 to 11 o' clock ) After 11 : full stereo Tested with a 10 K , 100 K pots and some resistors. I have...
  4. marcok

    PL 4000 issues and solutions

    1) serial number 2) new connectors 3) Phono 2 Riaa inverter circuits 4) wrong pcb on volume pot ( this causes bad contacts and shorts between mother board and front board ) Fixed with an isolation paint for pcb 5) internal wiring of new connectors I hope it could be helpfull ...
  5. marcok

    ON transistors

    Are these components good ? I need a pair or two of MJ 15015 and MJ 15016 for my Carver M400A . ( It's in protection mode ) Probably the original ones are good , but at present I'm not sure . Anyway , if I have understood well , this could be the new brand name of Motorola . The location is...
  6. marcok

    Cart for Dual CS 508

    Just bought this TT https://www.ebay.it/itm/233278012984 and its 1/2" cart adapter https://www.ebay.it/itm/Best-Audio-1-2-Inch-Cartridge-Adapter-269-611-Dual-Turntables-with-ULM-tonearm/332432572386?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649. It should be a bargain , but now I...
  7. marcok

    FM noise reducers

    https://www.nytimes.com/1983/07/10/arts/sound-fm-stereo-gets-a-boost.html A very interesting article . Ciao Marco PS: I have a NAD 4150 tuner and it works .
  8. marcok

    Happy new year !

    Buon anno a tutti ! Happy new year all ! Marco
  9. marcok

    Merry Christmas

    Buon Natale , ragazzi ! Merry Christmas , guys ! Ciao Marco PS : I write here , because in the Announcements the SW tells me that I have no the privileges .
  10. marcok

    cloth surround for speakers

    My father's Infinity RS iii speakers need new surrounds . ( simply the age ) My question is : Can you appreciate the difference between cloth and foam ? The advantage is that the cloth is for lifetime . I know that is the classic " one million question " but I would like to know your...
  11. marcok

    My PL700B by Marco

    Here are the first pics . Work in in progress . Ciao Marco
  12. marcok

    Allison One

    http://tmraudio.com/speakers/full-range-floorstanding/allison-acoustics-model-one-vintage-speakers-pair/ A simple suggestion . My father has a pair of them powered by PL 700 ,and I can adfirm that the sound is fantastic .Very hungry of power but very easy to place in a normal living room . Ciao...
  13. marcok

    Phase Linear 5000

    Hi Ed , two answers about PL 5000 tuner : 1) who was the manufacturer of RF front ent ? ( I can't find anything in the web ) 2) why is there not the hi blend filter ? ( it' s a normal function ) They are onlly my curiosities . Thank you in advance and ciao Marco
  14. marcok

    AC phasing in hi fi system

    Hi all , some of you can hear the difference in sound when you change the polarity of AC plug ? To be honest I have never seen any difference . My systems have no ground connections at all : no hum , no buzz , nothing . Ciao Marco
  15. marcok

    RC 4136N with PL 1000

    Hi all, after one week I discovered that RC 4136 N causes distorsion at very low level in my PL 1000 series 1. After replacing it with a new one the unit seems O.K. Now I ask you if it's better to replace the RC 4136 N with a TL 074 or others using the adapter . My doubt is that RC 4136 N is...
  16. marcok

    Denon CD player

    My brother's Denon Cd player does't read these Cds https://www.amazon.it/Pollini-Beethoven-Maurizio/dp/B00NOB05ZW/ref=sr_1_1?ie=UTF8&qid=1508255098&sr=8-1&keywords=maurizio+pollini+piano+sonatas All other Cds are O.K.and last year I changed laser unit. ( Sony ) Why no focus ? Are these Cds too...
  17. marcok

    Class D amps

    What do you think about class D amps ? My question is : Why are there not class D amps for hifi ? ( I have seen only one model by Pioneer ) For PA now all power amps are in class D ( see Crown for instance ) and for me they "sound great ". The yield is very high and you should save money for...
  18. marcok

    Reel to to reel tapes

    Hi all , now I would like to buy a RTR deck ( Revox A77) and here in Europe it's very easy to find good units and all the spares , but what about the tapes ? If I have understood well now there are only two manufactures : Recording the masters ( based on Basf and Agfa technology ) and Zonal (...
  19. marcok

    8 track system

    I never heard an 8 track tape , so how is the sound of this sytem : low fi , mediium fi or hi fi ? It' s a my great curiosity . Furthermore what is the best player/ recorder : Akai ( cr 81 -82) , Pioneer ( r-h 99 -100 ) or else ? Ciao Marco
  20. marcok

    Tandberg cassette deck TCD 310

    I have found these decks at 100 / 150 € ( TCD 310 and TCD 310 MKii ) These gears have a good reputation and you can find belts and rollers easily .( not genuine ) The question is : does anybody know Tandberg cassette decks ? Are there strange issues , because for me the price is too low...
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