904L 9.52 * 1.24mm Chitsulo chosapanga dzimbiri chophimbidwa ndi chigawo cha mankhwala, Gramophone Dreams #70: Sutherland Engineering SUTZ & Lounge Audio Copla preamp, Dynavector DV-20X2 ndi XX-2 MKII cartridge

Koma pamene ndikulemba gawoli la mwezi uliwonse, ndikufuna kumva mosiyana, monga kuyendetsa galimoto ya '70s Ford station wagon panjira ndikulemba ma motelo ndi malo opangira mafuta.Ulendowu unali wosangalatsa, wosavuta, wokhala ndi malingaliro abwino ndikuyima kumalo osungiramo zinthu zakale zamagalimoto, famu ya njoka ndi phanga la stalactite.

Kufotokozera

904L 9.52 * 1.24mm Chitsulo chosapanga dzimbiri coiled machubu ogulitsa

aloyi 904L chubu (UNS N08904) ntchito ntchito zimene zimafunika zolimbitsa kuti dzimbiri kukana.Aloyi 904L ndi otsika mpweya mkulu aloyi austenitic zosapanga dzimbiri zitsulo, poyamba anapangidwa kukana dzimbiri mu kuchepetsa sulfuric acid.Chifukwa cha kuphatikiza kwa chromium, faifi tambala, molybdenum ndi mkuwa, kalasiyi yathandiza kwambiri kukana ma acid ochepetsa kuchepetsa, makamaka sulfuric acid.Machubu a aloyi 904L amalimbananso kwambiri ndi kuukira kwa chloride kuchokera ku dzimbiri / ming'alu ndi kupsinjika kwa dzimbiri.Aloyi 904L si maginito mu mikhalidwe yonse, ali ndi kulimba modabwitsa, ndipo ali formability wabwino ndi weldability.

Chifukwa cha zinthu izi, munthu akhoza kupeza aloyi 904L chubu mu ntchito zambiri.Izi zimachokera ku ma utility scrubber assemblies mpaka zida zopangira asidi ndi feteleza, zamkati ndi kukonza mapepala, malo ozizirirapo madzi a m'nyanja.904L imagwiritsidwa ntchito popanga ma sulfuric kapena phosphoric acid, imawonetsa kukana kwake kwa dzimbiri kuchokera ku ma acid amenewo.Mafakitale a mapepala, gasi, mankhwala ndi mankhwala amagwiritsanso ntchito 904L chifukwa cha kukana kwake ndikugwiritsanso ntchito 400-450 madigiri C. Aloyi 904L tubing amatha kuwotcherera, makina, kutentha, kutentha, annealed, kuumitsa ndi kuzizira ntchito zambiri.

UNS NO8904, yomwe imadziwika kuti 904L, ndi chitsulo chochepa cha carbon high alloy austenitic zosapanga dzimbiri chomwe chimagwiritsidwa ntchito kwambiri m'malo omwe zinthu zowonongeka za AISI 316L ndi AISI 317L sizokwanira.

Kuphatikizika kwa mkuwa pagululi kumapangitsa kuti zisawonongeke ndi dzimbiri kuposa zitsulo zosapanga dzimbiri za nickel wa chrome, makamaka sulphuric, phosphoric ndi acetic acid.Komabe, kugwiritsa ntchito hydrochloric acid kumachepa.Ilinso ndi kukana kwakukulu pakubowola munjira za chloride, kukana kwambiri kung'ambika komanso kupsinjika kwa dzimbiri.Aloyi 904L imagwira ntchito bwino kuposa zitsulo zina zosapanga dzimbiri za austenitic chifukwa cha kuphatikizika kwakukulu kwa faifi tambala ndi molybdenum.

Kalasiyi ndi yopanda maginito m'mikhalidwe yonse ndipo imakhala ndi mawonekedwe abwino komanso amawotcherera.Mapangidwe a austenitic amapatsanso kalasiyi kulimba kwambiri, ngakhale mpaka kutentha kwa cryogenic.

Zomwe zili mu chromium zimalimbikitsa ndikusunga filimu yosasunthika yomwe imateteza zinthuzo m'madera ambiri owononga.904L imakhala ndi mphamvu yolimbana ndi mvula ya ferrite ndi sigma pazigawo zoziziritsa kuzizira ndi kuwotcherera kuposa zitsulo zina zosapanga dzimbiri zomwe zimakhala ndi molybdenum monga 316L ndi 317L.Palibe chiopsezo cha intercrystalline corrosion pakuzizira kapena kuwotcherera chifukwa cha kuchepa kwa mpweya.Kutentha kwake kwakukulu kwa ntchito ndi 450 ° C.

Kalasi iyi ndiyothandiza kwambiri pakuwongolera ndi kugwiritsa ntchito machubu pomwe 316 ndi 317L sizoyenera.

Chitsulo chosapanga dzimbiri cha 904L chimaphatikiza molybdenum ndi mkuwa ndi chitsulo kuti chiwonjezeke kukana kuchepetsa zidulo ngati sulfuric acid.Imayimilira bwino kwambiri ku ma chlorides m'malo otsika pang'ono komanso kuwononga dzimbiri, komanso kusweka kwa dzimbiri.

904L Stainless Steel Pipes and Tubes Product Range 904L Stainless Steel Pipes and Tubes Details: ASTM A/ASME SA 269/677 904L Mapaipi Achitsulo Osapanga dzimbiri ndi Makulidwe a Machubu (Zopanda Pampu): 1/2″ NB NB Zopanda Zitsulo 8″ NB - NB Zopanda Zitsulo 8″ Makulidwe (RW): 1/2″ NB – 24″ NB 904L Mapaipi Achitsulo Osapanga dzimbiri ndi Makulidwe a Machubu (EFW): 6″ NB – 100″ NB

»904L Mapaipi Achitsulo Osapanga dzimbiri ndi Makulidwe a Machubu: Mapaipi onse amapangidwa ndikuwunikiridwa / kuyesedwa kuti agwirizane ndi miyezo yoyenera kuphatikiza ASTM, ASME ndi API etc. Zofunika Zazikulu Izi zimatchulidwira chinthu chopiringizika (mbale, pepala ndi koyilo) mu ASTM B625 .Zofanana koma osati zofanana zimatchulidwa pazinthu zina monga chitoliro, chubu ndi bar muzolemba zawo.

Mapulogalamu

Chitsulo chosapanga dzimbiri cha 904L chimagwiritsidwa ntchito kwambiri m'mafakitale amankhwala, mankhwala, mafuta ndi gasi.Zomwe zimagwiritsidwa ntchito zimaphatikizapo akasinja, ma valve, zosinthira kutentha, ma flanges ndi manifolds.Kuphatikizika kwa mkuwa pakupanga 904L chitsulo chosapanga dzimbiri kumathandizira kukwanira kwake pazinthu monga akasinja ndi zinthu zina zomwe zimagwiritsidwa ntchito posamalira sulfuric ndi phosphoric acid.

Mwezi uno, ndiyenda mtunda wa makilomita angapo kutsika ndi odometer ya Ford ndikuwunika momwe Ron Sutherland amapangira zinthu zaposachedwa: $3,800 transimpedance dynamic preamplifier yotchedwa SUTZ.Panjira, ndibwereranso ku $ 1250 Dynavector DV-20X2 katiriji yamphamvu ndikuwona zomwe zingakhale zabwino kwambiri pamzere wa katiriji wa Dynavector: $2150 XX-2 MKII.
Pomaliza, ndipuma pang'ono, ndikutuluka mgalimoto, ndikudzidziwitsanso ndi Lounge Audio's $355 Copla preamp, yomwe ndakhala ndikugwiritsa ntchito mokondwera kuyambira ndikuwunikanso mu February 2018, koma sindinalembepo kuyambira pomwe ndikuwunikiranso.
Sutherland Engineering SUTZ Ndinakhala nthawi yambiri ndikuyesera kulingalira phokoso lonse la maginito a electromagnetic chifukwa cha kugwedezeka kwa ndodo yolumikizidwa ku mtundu wina wa koyilo mu mphamvu ya maginito.Ndinkaganiza kuti nyimboyo ikulendewera pachimake cha singano/cantilever/coil, kutambasula waya womangika ndikugwedeza koyiloyo kudzera m'mizere yosasunthika yopangidwa ndi maginito ang'ono kwambiri.Pamene mikomberoyo imadutsa mu mphamvu ya maginito ya maginito, mphamvu yamagetsi imasonkhezeredwa ndi utali wake.
Ndinaphunzira kujambula mbali ya malamulo a Faraday kusukulu ya pulayimale.Kusukulu ya sekondale, mphunzitsi wina anafotokoza lamulo la Lenz, lomwe linali lovuta kwambiri kulimvetsa kuti: “Kusinthasintha kwa mphamvu ya magetsi chifukwa cha kusintha kwa maginito kumapangitsa kuti mphamvu ya maginito ikhale yosiyana ndi kusintha kumene kunayambitsa.”
Chodabwitsa n’chakuti, lamulo la Lenz ndi kunyansidwa kwake kwa maginito kunabwera m’maganizo mwanga pamene ndinali kuyesa kulingalira mmene masiteji amawu olamuliridwa panopa angagwirire ntchito ndi chifukwa chake angakhudzire kulira kwa kaseti motere.Kukumbukira uku kunandipangitsa kunena kuti kukweza katiriji kacoil kamene kamayenda ndi kagawo kakang'ono kakang'ono (palibe voliyumu yolowera) kumakulitsa zomwe zikuyenda kudzera pa coil ya cartridge, zomwe zimakulitsa kuwongolera kwa malamulo a Lenz, potero kumachepetsa kuti mukwaniritse kusuntha komwe kungatheke. coil cantilever (mawu am'munsi 1).
Kenako ndidayesa kulingalira momwe damping yomwe ilipo pano ingafananize ndi kunyowa komwe kumaperekedwa ndi shunt resistor yachikhalidwe kutsogolo kwa siteji yogwira.Nthawi zonse ndimaganiza kuti kusiyana kulikonse pakulemetsa / kuyimitsa kumakhudza momwe cholembera chimayendera bwino zolembera, ndipo ndapeza kuti kusiyana pakuchepetsa (chilichonse kungakhale) kumayambitsa kusiyana pakutsata, groove. Phokoso, kumva kwa visceral Zomwe zimayambitsa komanso kusokoneza kwapakati.
Pakadali pano, ndaphimba magawo a phono omwe ali ofanana, osinthira masitepe osiyanasiyana, ndi magawo atatu a phono "transimpedance": Copla ya Lounge Audio ya $355, siteji ya phono ya Dynavector's P75 MK3 $895, ndi Sutherland Engineering's Little Loco ya. $3,800.
M'mbiri, kukoma kwanga pa kusewerera kwa phonograph kwakonda zosintha zapamwamba za nickel zomwe zimayesa kupitilira mlengalenga ndi ma filaments a RIAA tube EQs.Komabe, posachedwapa, ndakhala ndikungoyang'ana pazidziwitso zotsika kwambiri, zotsika kwambiri kuchokera ku Sutherland Engineering Little Loco zoyendetsedwa ndi phono magawo omwe ndakhala ndikugwiritsa ntchito ndi My Sonic Lab's low-output (0.3mV), low-impedance. (0 .6 ohm) Katiriji yamphamvu ya Ultra Eminent EX.Little Loco ikuwoneka kuti imathandizira pang'ono pang'ono katiriji yomwe imapereka.Poyerekeza ndi phokoso la Eminent EX pa siteji pa Parasound Halo JC 3+ phono siteji, nyimbo ya My Sonic-Loco inaseweredwa mokulirapo (potengera chithunzi ndi malo omveka) komanso yowongoka (potengera mawonekedwe ndi masikelo) - ndi phompho kumbuyo.Izi ndi zolemba zopanda pake.
Chifukwa chake mwadzidzidzi ndakhala ndikukakamira: ndingapeze bwanji chete kachetechete kakang'ono kakang'ono komanso ma microdata opanda tirigu popanda kukakamizidwa kusiya ukadaulo wa CinemaScope ndi RIAA's chubu stage?
Ndinafotokozera vuto limeneli kwa mnzanga Chad Stelly, amene anabweretsa vuto kwa mnzathu wapamtima Ron Sutherland wa Sutherland Engineering (mawu a m'munsi 2);Nthawi yomweyo Ron anayankha kuti, “Ndazithetsa!”Patapita mlungu umodzi, ndinalowa nawo.Kupanga kwaposachedwa kwa Ron, "SUTZ" transimpedance preamplifier, mpaka 47 kΩ yosuntha maginito ya Tavish Design Adagio all-tube phono stage.
Preamp ya SUTZ yochokera ku Sutherland Engineering imagwiritsa ntchito 17 x 2 x 13 ″ chassis yomweyo monga Little Loco preamp yomwe ndidafotokoza mu Januware 2022 stereophile.M'malo mwake, SUTZ imawoneka chimodzimodzi ngati Little Loco mkati ndi kunja.makonda atatu omwewo omwe adalowetsedwa ndi jumper ngati Little Loco.Nditafunsa kuti SUTZ idapindula chiyani, Ron adanditumizira imelo kuti ma SUTZ onse am'tsogolo apindule kasanu, koma adangondidzudzula.Transimpedance amplifier alibe "phindu" chifukwa mayunitsi olowetsa (ampere) samafanana ndi mayunitsi otulutsa (volts).“( mawu a m’munsi 3 )
Ndisanayambe, ndiyenera kunena kuti gulu la zigawo zomwe ndikugwiritsa ntchito ndizomwe ndimatcha dongosolo la "real-fi" la "real-fi": katiriji ya phono ndi transformer yowonjezereka yolumikizidwa ndi mkono wa 10.5 ″ Thomas.Schick Dr. Feickert Blackbird rotary EQ, Tavish Design Adagio phono stage kapena SunValley SV EQ1616D phono stage, Lab 12 Pre 1 line level preamp yolumikizidwa ndi Elekit TU-8600S SE amplifier (yokhala ndi machubu a Western Electric 300B), ya Falcon Gold.Pamawunivesite awa, ndimakumbutsidwa nthawi zonse momwe ndimakondera dongosololi komanso momwe limajambulira ndi mawu olondola komanso zojambulidwa zenizeni kuposa dongosolo lililonse lomwe ndapanga kuyambira pomwe ndidayamba kulembera Stereophile.
Dynavector DV-20X2 Popeza ndidawunikanso mu Gramophone Dreams #10, palibe kaseti mchipinda changa yomwe idasewera ma discs ambiri kuposa $1,250 Dynavector DV-20X2 wosewera wamphamvu.Ndakhala maola mazana ambiri ndikusewera pa ma turntables osachepera khumi ndi awiri.Imasewera momwe ndimakonda ma cartridges otembenuka: owoneka bwino, othamanga, komanso ozindikira.Ali ndi mojo-vivo yokwanira kupanga zojambulira zamphamvu ndi zodutsa zakuthwa ndi kuwombera, momasuka kwathunthu.Pamtengo uwu, makatiriji ochepa amatha kuchita zonsezi.Anthu ambiri sangathenso.
Ngakhale nthawi yonse yogwiritsidwa ntchito, 20X2 imakwanitsabe kupanga nyimbo zophulika koma zosangalatsa, mokhulupirika ndikubwezeretsanso nyimbo imodzi yabwino kwambiri komanso yotchuka kwambiri ndi katswiri wa zamalonda David Lewiston: Golden Rain LP "Ketjak: Ramayana Monkey Chant" (LP Nonesuch Explorer).H72028).Kusintha kwamphamvu kwa amonke 200 akuimba mogwirizana kunali kodabwitsa, ngakhale ndimadziwa kuti atsala pang'ono kufuula 'tak'.Amonke omwe ali pabwalo amapangidwa mozungulira mozungulira, zomwe zimamveka pang'onopang'ono.M'ndime zabata, diso lamaganizo langa limakonda kutchula malo omwe amonke amaimba kumapeto kwa mabwalowa.Pamene amonke anasiya kufuula, phokoso lozungulira m’bwalo linandipangitsa kuwona ndi kumva kukhalapo kwawo.Makatiriji okhala ndi mulingo uwu wa kuzindikira ndi osowa pamtengo wamtengo uwu.
Nthawi zonse ndikasewera "Monkey Chant" ndi Dynavector 20X2 MC, Sutherland SUTZ, ndi SunValley SV EQ1616D all-tube phono stage, ndinali wodabwa ndikudabwa ndi kumveka bwino, liwiro la mphezi, ndi mphamvu popanda kukayikira.zosakhalitsa zimachitika ndi mawu apadera komanso akuthwa ndi mipata yowonekera pakati pa mawu a woyimba.Kwa ine, uwu ndi mtundu watsopano wa wow!Mphindi: Zambiri za disk zomwe zilipo pano zimalimbikitsidwa ndi machubu a SunValley.
Dynavector XX-2 MKII Chad Stelly adakondwera nane m'mawu onena za "mgwirizano wodabwitsa" wa Dynavector XX-2 MKII dynamics ndi Sutherland SUTZ, kotero ndidalumikizana ndi Mike ku Toffco, wogawa wa Dynavector waku US, Prank (mawu am'munsi 4), yemwe amatsimikizira Zomwe Chad adawona kuti $2,150 XX-2 MKII mwina ndi "malo agolide" pamzere wa katiriji wa Dynavector.Ino ndi nthawi yosangalatsa kwambiri ya Dynavector.
Ndimakopekabe ndi makatiriji a Dynavector chifukwa chonena kuti amayang'ana kwambiri pulogalamu yaumisiri pachimake cha vuto: kapangidwe ka maginito.Webusaiti yawo ikufotokoza kuti: "Kuwerengera kwathu ndi kuyesa kwathu kwawonetsa kuti ngakhale kusinthasintha kwakung'ono kwambiri kungayambitse kusintha kwa mphamvu ya maginito yomwe ili mumpata wa mpweya, motero kusokoneza kusokoneza kwa chizindikiro."5 maginito m'malo mwa samarium-cobalt kapena neodymium-boron.Cholinga chodziwika cha Dynavector's patent "flux damping" ndi "soft magnetic field" ndikuchepetsa "kusinthasintha kosafunika kwa maginito".
Malinga ndi tsamba la Dynavector, XX-2 MKII imagwiritsa ntchito maginito a Alnico 5 (mawu am'munsi 5) chifukwa ali ndi mphamvu yamagetsi yamagetsi yomwe, poyerekeza ndi mitundu ina ya maginito, "imapanga mphamvu ya maginito yokhazikika ndipo motero imasunga kutulutsa kokhazikika. Voteji"..
XX-2 MKII ili ndi kukana kwapakati (6 ohm) ndi kutsika kwapakati pa 0.28 mV.Galimoto yake imakhala m'nyumba yolimba ya 7075 aluminiyamu ndipo katiriji imalemera magalamu 9.2.Kutsatira kumatchulidwa pa 10 µm/mN ndipo Dynavector amalimbikitsa katundu wochepa (30 ohms).
20X2 imagwiritsa ntchito cholembera chotseguka cha MicroRidge pa cantilever yapakatikati, pomwe XX-2, cartridge yotsika mtengo kwambiri pamzere wa Dynavector, imagwiritsa ntchito cholembera cholimba cha boron chokhala ndi cholembera cha Pathfinder chokhala ndi mzere wa 7 × 30 µm pansonga.Ine Ngati ndikukumbukira bwino, iyi ndi diamondi ya Ogura yomwe Lyra ndi Koetsu adagwiritsa ntchito.
Mawu a m'munsi 3: Kuzindikira mwaukadaulo kupindula kwa siteji ya phono sikovuta: ndikofanana ndi masiku onse, chiŵerengero cha voteji yotulutsa ku voliyumu yolowera kapena kutulutsa kwapano mpaka pano - sankhani imodzi mwazo.Koma si kuchuluka kwa chiwongoladzanja cha siteji ya phono yomwe ikulowetsa panopa, yomwe ntchito yake ndikusintha panopa kukhala magetsi.Pazida zotere, kufanana kwa thiransifoma sikungaletsedwe, mwina chifukwa chake Ron Sutherland adaganiza zotcha mankhwalawa SUTZ: amatha kuonedwa ngati mtundu watsopano wa thiransifoma, ngakhale siwosintha mwachizolowezi. nzeru.Chifukwa chiyani Z pamapeto?Mwina chifukwa njira yachibadwa yodziwira chipangizo cha transimpedance ndi chiŵerengero cha voteji yomwe imachokera ku zowonjezera zamakono, zomwe zimakhala ndi mayunitsi a impedance, nthawi zambiri zimatchulidwa ndi chilembo Z. - Jim Austin Jun 30 '11 pa 12:00
Mawu a M'munsi 4: Dynavector Systems Ltd., 3-2-7 Higashi-Kanda Chiyoda-ku Tokyo 101-0031 Japan.Foni: +81 (0) 3-3861-4341.Webusaiti: www.dynavector.com US Distributor: Toffco, 2020 Washington Ave., Unit 314, St. Louis, MO 63103. Phone: (314) 454-9966.URL: dynavector-usa.com
Mawu a M'munsi 5: Manambala omwe amachokera ku "Alnico" amatanthauza zosakaniza zapadera za aluminiyamu, faifi tambala, cobalt, mkuwa ndi chitsulo.Alnico 5 imakhala yolemera kwambiri mu cobalt komanso maginito pang'ono kuposa ma aloyi ena a Alnico.Mulimonse momwe zingakhalire, magitala amagetsi okhala ndi zithunzi za Alnico 5 amakhala ndi zodulira zoyera komanso kamvekedwe kowala.— Jim Austin
$ 3,800 pa siteji ya phono yapamwamba kwambiri, yomwe ili yabwino kwambiri kuposa mtengo wamtengo wapatali wa $ 89,000 wa CH Precision P1 phono siteji ya phono yomwe inawunikiridwa sabata yatha.Ndipo "zikhoza" kumveka bwino pamtengo wa 24.
Ndikufuna kumvetsetsa momwe siteji ya phono ya transimpedance imamveka yotseguka komanso yamphepo ikadzazidwa ndi cartridge yotsika kwambiri.Zaka zambiri zamagawo a phono zandiphunzitsa kuti kutsitsa molakwika kumatha kusokoneza phokoso la cartridge.Chifukwa chiyani izi sizichitika ndi magawo a phono transimpedance?
Ganizirani izi ngati oyankhula otsika kwambiri omwe amawagwiritsa ntchito, amakoka / kukoka zambiri kuchokera pa amplifier, tiyeni tiyang'ane nazo, oyankhula osavuta kuyendetsa amakhala opepuka kuposa olankhula otsika.
Tidanyamula Supex SD900 ndi 1000 ohm, 500 ohm, 100 ohm, 50 ohm ndi 10 ohm, mawu oyera komanso otsitsa bwino kwambiri ndi 10 ohm, koma mumafunika kupindula kwambiri ndipo "ikhoza" kukhala yaphokoso ngati idapangidwa molakwika.