904L 9.52*1.24mm ʻO ke kila kila wili ʻia nā mea kemika, Gramophone Dreams #70: Sutherland Engineering SUTZ & Lounge Audio Copla preamp, Dynavector DV-20X2 a me XX-2 MKII pahu pahu

Akā, i koʻu kākau ʻana i kēia kolamu mahina, makemake au i kahi manaʻo ʻē aʻe, e like me ka hoʻokele ʻana i kahi kaʻa kaʻa hoʻokele Ford '70s ma waho o ke alanui a me ka palapala ʻana i nā motel a me nā keʻena kinoea.He leʻaleʻa ka huakaʻi, maʻalahi, me nā hiʻohiʻona maikaʻi loa a kū i kēlā me kēia hale hōʻikeʻike kaʻa, mahiʻai nahesa a me ke ana stalactite.

Hōʻike

904L 9.52 * 1.24mm Mea kūʻai aku i nā mea kūʻai mai ke kila kila

paipu 904L alloy (UNS N08904) no ka hoʻohana ʻana i nā noi e koi ana i ke kūpaʻa haʻahaʻa a kiʻekiʻe.ʻO ka Alloy 904L he kila haʻahaʻa carbon high alloy austenitic stainless steel, i hoʻokumu mua ʻia e pale aku i ka corrosion i ka dilute sulfuric acid.Ma muli o ka hui pū ʻana o ka chromium, nickel, molybdenum a me ke keleawe, ua hoʻomaikaʻi maikaʻi kēia papa i ke kūʻē ʻana i nā waikawa hoʻemi ikaika, ʻoi aku ka sulfuric acid.Paʻa loa ka paipu Alloy 904L i ka hoʻouka ʻana o ka chloride mai ka lua a me ka ʻāʻī ʻana a me ke koʻikoʻi.ʻO Alloy 904L ʻaʻole magnetic i nā kūlana āpau, loaʻa iā ia ka paʻakikī kupaianaha, a he maikaʻi ke ʻano a me ka weldability.

Ma muli o kēia mau waiwai, hiki i kekahi ke loaʻa i ka pahu alloy 904L i nā noi he nui.Loaʻa kēia mau mea mai nā hui scrubber pono a hiki i nā lako hana wai a me nā mea kanu, ka pulp a me ka hana pepa, nā mea hoʻoluʻu wai kai.Hoʻohana ʻia i nā kaʻina hana i loaʻa i ka sulfuric a i ʻole phosphoric acid, hōʻike ʻo 904L i kona kūpaʻa maikaʻi loa i ka corrosion mai kēlā mau waikawa.ʻO ka pepa, ke kinoea, ka lāʻau lapaʻau a me nā ʻoihana kemika hoʻi e hoʻohana i ka 904L no kona kū'ē a hoʻohana i ka 400-450 degere C. Hiki ke welded, mīkini, hana wela, annealed, paʻakikī a me ke anu no nā kumu he nui.

ʻO UNS NO8904, i ʻike nui ʻia ʻo 904L, he haʻahaʻa carbon high alloy austenitic stainless steel i hoʻohana nui ʻia i nā noi kahi i lawa ʻole ai nā waiwai corrosion o AISI 316L a me AISI 317L.

ʻO ka hoʻohui ʻana o ke keleawe i kēia papa e hāʻawi iā ia i nā waiwai kū i ka corrosion i ʻoi aku ka maikaʻi ma mua o nā chrome nickel stainless steels maʻamau, ʻo ia hoʻi i ka sulfuric, phosphoric a me ka acetic acids.Eia nō naʻe, he palena iki ka hoʻohana ʻana me nā waikawa hydrochloric.He kūpaʻa kiʻekiʻe nō hoʻi ia i ka lua ʻana i loko o nā hāʻina chloride, kahi kūʻē kiʻekiʻe i ka crevice a me ke koʻikoʻi corrosion māwae.ʻOi aku ka maikaʻi o ka Alloy 904L ma mua o nā mea kila kila austenitic ʻē aʻe ma muli o ka hoʻohui kiʻekiʻe o ka nickel a me ka molybdenum.

ʻAʻole magnetik ka papa ma nā kūlana āpau a he maikaʻi loa ka formability a me ka weldability.Hāʻawi ke ʻano austenitic i kēia ʻano paʻakikī maikaʻi loa, a hiki i nā mahana cryogenic.

Hoʻoikaika a mālama ka mea chromium kiʻekiʻe i kahi kiʻiʻoniʻoni passive e pale ana i ka mea i loko o nā wahi corrosive he nui. Ua ʻoi aku ka ikaika o ka 904L i ka precipitation o nā ferrite a me nā sigma ma ka hoʻolili ʻana a me ka hoʻoheheʻe ʻana ma mua o nā kila kila ʻē aʻe i loaʻa ka molybdenum e like me 316L a me 317L.ʻAʻohe pilikia o ka corrosion intercrystalline ma ka hoʻoluʻu ʻana a i ʻole ke kuʻi ʻana ma muli o ka haʻahaʻa o ke kalapona.Aia ka wela o ka lawelawe ma 450°C.

Hoʻohana pono kēia māka i ka hoʻokele a me ka hoʻohana ʻana i nā paipu mea kani kahi i kūpono ʻole ai ka 316 a me 317L.

904L hui pū ʻia ka molybdenum a me ke keleawe me ka hao no ka hoʻonui nui ʻana i ke kūʻē ʻana i ka hōʻemi ʻana i nā waikawa e like me ka sulfuric acid.Kū maikaʻi loa ia i nā chlorides i loko o ke kaiapuni no ka lua haʻahaʻa a me ka ʻāʻī ʻana, a me ke koʻikoʻi ʻana i ka ʻino.

904L Kūleʻa Kūleʻa Paipu a me nā Tubes Hua'ōlelo 904L Kūleʻa Kūleʻa Kūleʻa a me nā Tubes Mea kiko'ī: ASTM A / ASME SA 269 / 677 904L Nā Paipu Kūleʻa Kūleʻa a me nā Nui (Seamless): 1/2 ″ NB - 8 ″ NB 904L Kūleʻa Kūleʻa Paipu a me nā Tubes Nui (RW): 1/2 ″ NB – 24 ″ NB 904L Nā Paipu ʻAi ʻAi Kuleana a me nā Nui (EFW): 6″ NB – 100″ NB

»904L Stainless Steel Pipes and Tubes Dimensions: Hana ʻia nā paipu āpau a nānā ʻia / hoʻāʻo ʻia i nā kūlana kūpono e like me ASTM, ASME a me API a me nā mea ʻē aʻe. .Ua kuhikuhi ʻia nā waiwai like akā ʻaʻole like no nā huahana ʻē aʻe e like me ka paipu, ka paipu a me ka bar i kā lākou mau kikoʻī.

Nā noi

Hoʻohana nui ʻia ʻo 904L stainless steel i ka ʻoihana kemika, lāʻau lapaʻau, ʻaila a me nā ʻoihana kinoea.ʻO nā mea hoʻohana maʻamau e pili ana i nā pahu, nā pahu, nā mea hoʻololi wela, nā flanges a me nā manifolds.ʻO ka hoʻohui ʻana o ke keleawe i ka haku ʻana o 904L stainless steel kōkua i kona kūpono no nā mea e like me nā pahu a me nā huahana ʻē aʻe i hoʻohana ʻia i ka lawelawe ʻana i ka sulfuric a me ka phosphoric acid.

I kēia mahina, e holo ana au i kekahi mau mile ma lalo o ka Ford odometer e nānā ana i ka hopena o ka huahana hou loa a Ron Sutherland i kēia manawa: he $3,800 transimpedance dynamic preamplifier i kapa ʻia ʻo SUTZ.Ma ke ala, e hoʻi au i ka $1250 Dynavector DV-20X2 dynamic cartridge a e ʻimi i ka mea maikaʻi loa i ka laina pahu pahu Dynavector: ka $2150 XX-2 MKII.
ʻO ka hope, e hoʻomaha wau, e haʻalele i ke kaʻa, a e kamaʻilio hou me ka Lounge Audio's $ 355 Copla preamp, kahi aʻu i hoʻohana nui ai mai ka loiloi ʻana ma Pepeluali 2018, akā ʻaʻole wau i kākau e pili ana mai ka nānā ʻana.
Sutherland Engineering SUTZ Ua hoʻohana au i ka manawa nui e noʻonoʻo i ka walaʻau electromagnetic a pau i hoʻokumu ʻia e ke koli ʻana o kahi lāʻau i hoʻopili ʻia i kekahi ʻano wili i loko o ke kahua magnetic.Ua noʻonoʻo au i ka ʻāʻī ʻāʻī o ka mooolelo e lele ana mai kahi hui niʻi liʻiliʻi/cantilever/coil, e hohola ana i ka uea hoʻopaʻapaʻa a hoʻoluliluli i ka wili ma o nā laina paʻa o ka ikaika i hana ʻia e kahi magnet lio liʻiliʻi loa.I ka hele ʻana o nā ʻōwili i loko o ka puʻupuʻu magnetic o kahi magnet, ua hoʻokomo ʻia kahi au i ko lākou lōʻihi.
Ua aʻo au e kaha kiʻi ʻāpana o ke kānāwai o Faraday ma ke kula haʻahaʻa.Ma ke kula kiʻekiʻe, ua wehewehe kekahi kumu i ke kānāwai o Lenz, a ʻoi aku ka paʻakikī o ka hoʻomaopopo ʻana: "ʻO ka polarity o kahi voli i hoʻololi ʻia e ka hoʻololi ʻana i ka flux magnetic e hoʻokumu i kahi au e kū'ē ana ke kahua magnetic i ka hoʻololi i hoʻokumu ʻia ai."
ʻO ka mea kupanaha, ua hiki mai i koʻu noʻonoʻo ke kānāwai o Lenz a me kona hoʻokuke ʻana i ka mana i ka wā e hoʻāʻo ai au e noʻonoʻo i ka hana ʻana o nā pae leo i hoʻomalu ʻia i kēia manawa a me ke kumu e hoʻopilikia ai lākou i ke kani o ka cassette ma kēia ʻano.ʻO kēia hoʻomanaʻo i alakaʻi iaʻu e manaʻo i ka hoʻouka ʻana i kahi pahu pahu hoʻoneʻe me kahi kaapuni pōkole virtual (ʻaʻohe volta komo) e hoʻonui i ke kahe e kahe ana i loko o ka pahu pahu pahu, a ʻo ia hoʻi ka mea e hoʻonui ai i ka hoʻohuli ʻana o ke kānāwai o Lenz, a laila e hoʻoheheʻe ʻia e hoʻokō i ka ʻoi loa o ka neʻe ʻana o ka pahu. cantilever coil (footnote 1).
A laila ua ho'āʻo wau e noʻonoʻo pehea e hoʻohālikelike ai kēia hoʻoheheʻe ʻana i kēia manawa me ka hoʻoheheʻe ʻana i hāʻawi ʻia e kahi pale shunt kuʻuna i mua o ke kahua hana.Ua noʻonoʻo mau au e pili ana nā ʻokoʻa a pau i ka hoʻouka ʻana a me ka hoʻopaʻa ʻana i ka maikaʻi o ka stylus i nā ʻāpana o kahi mooolelo, a ua hiki iaʻu i ka hopena o ka ʻokoʻa o ka hoʻoheheʻe ʻana (ʻo nā mea a pau) ke kuleana no nā ʻokoʻa i ka nānā ʻana, groove. walaʻau, manaʻo visceral Nā kikoʻī kumu a me ka distortion intermodulation.
I kēia manawa, ua uhi au i ka pūʻulu o nā ʻanuʻu phono i hoʻouka ʻia, nā mea hoʻololi i ka piʻi ʻana, a me nā ʻanuʻu phono "transimpedance" ʻekolu: Lounge Audio's Copla no $355, Dynavector's P75 MK3 phono stage no $895, a me Sutherland Engineering's Little Loco no $3,800.
Ma ka mōʻaukala, ua makemake koʻu ʻono i ka pāʻani phonograph i nā mea hoʻololi kiʻekiʻe-nickel step-up e hoʻāʻo nei e hoʻomāhuahua i ka lewa a me nā filament o RIAA tube EQs.Eia naʻe, i kēia mau lā, ua hauʻoli wau i ka ʻike haʻahaʻa, kiʻekiʻe kiʻekiʻe mai ka Sutherland Engineering Little Loco i hoʻomalu ʻia i kēia manawa phono pae aʻu i hoʻohana ai me kaʻu Sonic Lab's low-output (0.3mV), low-impedance. (0 .6 ohm) ʻO ka pahu pahu hoʻoikaika ikaika Ultra Eminent EX.ʻIke ʻia ʻo Little Loco e hoʻonui i nā kikoʻī liʻiliʻi a kēia pahu pahu e hāʻawi ai.Ke hoʻohālikelike ʻia me ke kani o ka Eminent EX ma ke kahua ma ke kahua phono Parasound Halo JC 3+ phono, ua hoʻokani nui ʻia ka hui ʻo My Sonic-Loco (ma ke ʻano o ke kiʻi a me ka leo kani) a me ka sleeker (ma ke ʻano o ke ʻano a me ka unahi) - me he hohonu ma hope.He mau memo hāmau kēia.
No laila ua paʻa koke wau: pehea e loaʻa ai iaʻu ka leo pōkole pōkole a me ka microdata manuahi me ka ʻole e koi ʻia e haʻalele iā CinemaScope a me RIAA's tube stage technology?
Ua wehewehe au i kēia pilikia i koʻu hoaaloha ʻo Chad Stelly, nāna i lawe i ka pilikia i ko mākou hoa pili ʻo Ron Sutherland o Sutherland Engineering (footnote 2);Ua pane koke ʻo Ron, “Ua hoʻoponopono au!”Hoʻokahi pule ma hope mai, ua komo au.ʻO ka mea hou loa a Ron, ʻo ka “SUTZ” transimpedance preamplifier, i ka 47 kΩ neʻe hoʻokomo magnet o kaʻu Tavish Design Adagio all-tube phono stage.
Hoʻohana ka SUTZ preamp mai Sutherland Engineering i ka chassis 17 x 2 x 13 ″ like me ka Little Loco preamp aʻu i wehewehe ai i kaʻu stereophile Ianuali 2022.ʻOiaʻiʻo, ʻano like ke ʻano o SUTZ me Little Loco i loko a i waho.ʻekolu mau hoʻonohonoho loaʻa i hoʻohana ʻia e like me Little Loco.I koʻu nīnau ʻana i ka mea i loaʻa iā SUTZ, ua leka uila mai ʻo Ron iaʻu e loaʻa i nā SUTZ āpau e hiki mai ana ʻelima mau hoʻonohonoho waiwai, akā ua ʻāhewa wale mai iaʻu.ʻAʻohe "gain" o ka mea hoʻonui transimpedance no ka mea ʻaʻole kūlike nā ʻāpana hoʻokomo (amperes) me nā ʻāpana hoʻopuka (volts).“(ka footnote 3)
Ma mua o koʻu hoʻomaka ʻana, pono iaʻu e haʻi aku ʻo ka hui o nā mea aʻu e hoʻohana nei ʻo ia kaʻu i kapa ai he ʻōnaehana "real-fi" holoʻokoʻa: kahi pahu phono a me ka transformer step-up i hoʻopili ʻia i kahi lima 10.5″ Thomas.Schick Dr. Feickert Blackbird rotary EQ, Tavish Design Adagio phono stage or SunValley SV EQ1616D phono stage, Lab 12 Pre 1 line level preamp i hoʻohui ʻia me Elekit TU-8600S SE amplifier (me Western Electric 300B paipu), no Falcon Gold.I loko o kēia mau loiloi, hoʻomanaʻo mau iaʻu i koʻu makemake nui i kēia ʻōnaehana a me ka hoʻopaʻa ʻana me ka leo pololei a ʻoi aku ka ʻoiaʻiʻo ma mua o nā ʻōnaehana aʻu i kūkulu ai mai koʻu hoʻomaka ʻana e kākau no Stereophile.
ʻO Dynavector DV-20X2 Mai koʻu nānā ʻana iā ia ma Gramophone Dreams #10, ʻaʻohe cassette i loko o koʻu lumi i hoʻokani i nā diski ʻoi aku ma mua o ka $1,250 Dynavector DV-20X2 mea hoʻokani pila.Ua hoʻohana au i mau haneli mau hola e pāʻani ana ma ka liʻiliʻi he ʻumi kakini turntables.Hoʻokani ʻo ia i ke ʻano aʻu i makemake ai i nā pahu pahu turntable: ʻoluʻolu, wikiwiki, a me ka ʻike.Loaʻa iā ia ka mojo-vivo e hana i nā hoʻopaʻa leo ikaika me nā transients koi a me nā kiʻi, ʻoiai hoʻomaha loa.Ma kēia kumu kūʻai, hiki ke hana i nā pahu ʻelua.ʻAʻole hiki i nā poʻe he nui.
ʻOiai me ka manawa a pau, hiki i ka 20X2 ke hoʻoikaika i ka hana ʻana i nā mele pahū akā hoʻomaha, hana hou i kekahi o nā mele maikaʻi loa a kaulana loa e ka ʻenekini kahua ʻo David Lewiston: Golden Rain LP "Ketjak: Ramayana Monkey Chant" (LP Nonesuch Explorer).H72028).ʻO ka hoʻololi ikaika ʻana o nā mōneka 200 e hīmeni like ana, ʻoiai ua ʻike wau ua kokoke lākou e uē i ka 'tak'.Hoʻonohonoho ʻia nā mōneka i loko o ka pā hale i nā pōʻai concentric, hiki ke hoʻomaopopo ʻia i ka nānā ʻana.Ma nā pauku mālie, makemake ka maka o koʻu noʻonoʻo e kuhikuhi i kahi o nā mōneka pākahi e hīmeni ana ma nā wēlau o kēia mau pōʻai.I ka pau ʻana o ka hoʻōho ʻana o nā mōneka, ʻo ke kani ʻana o ka pā hale i ʻike a ʻike ai i ko lākou hele ʻana.Kakaʻikahi nā pahu pahu me kēia pae ʻike ma kēia pae kumukūʻai.
I kēlā me kēia manawa aʻu i pāʻani ai i ka "Monkey Chant" me kahi Dynavector 20X2 MC, Sutherland SUTZ, a me kahi kahua phono holoʻokoʻa ʻo SunValley SV EQ1616D, ua hoʻopūhoihoi au i ka mālamalama maoli, ka māmā uila, a me ka dynamics me ka kānalua ʻole.hana nā transients me nā leo ʻokoʻa a ʻoi aku ka ʻike ʻia ma waena o nā leo o ka mea mele.Noʻu, he ʻano hou kēia o ka wow!Manawa: Hoʻonui maikaʻi ʻia ka ʻike diski o kēia manawa e nā paipu SunValley.
Ua hauʻoli ʻo Dynavector XX-2 MKII Chad Stelly iaʻu i kahi kikokikona e pili ana i ka "incredible synergy" o Dynavector XX-2 MKII dynamics me Sutherland SUTZ, no laila ua hoʻopili wau iā Mike ma Toffco, ka mea hoʻolaha ʻo Dynavector US, Prank (footnote 4), nāna e hōʻoia. ʻO ka ʻike a Chad ʻo ka $2,150 XX-2 MKII paha ka "wahi gula" ma ka laina pahu pahu Dynavector.ʻO kēia ka manawa hoihoi loa no Dynavector.
Makemake au i nā pahu pahu Dynavector ma muli o kā lākou ʻōlelo e kālele ana lākou i ka papahana ʻenekinia ma ke kumu o ka pilikia: ka hoʻolālā kaapuni magnetic.Ua wehewehe kā lākou pūnaewele: "Ua hōʻike kā mākou helu a me kā mākou mau hoʻokolohua hiki i nā loli liʻiliʻi loa i ka flux ke hoʻololi i ka ikaika magnetic i ka ea ea, a laila e hoʻopilikia ai i ka distortion intermodulation o ka hōʻailona puka."5 mau magnet ma kahi o samarium-cobalt a i ʻole neodymium-boron.ʻO ke kumu i ʻōlelo ʻia o ka "flux damping" a Dynavector i hoʻopaʻa ʻia a me ka "ʻeleʻele magnetic palupalu" ʻo ia ka hōʻemi ʻana i nā "hoʻololi magnetic makemake ʻole".
Wahi a ka pūnaewele Dynavector, hoʻohana ka XX-2 MKII i nā magnet Alnico 5 (footnote 5) no ka mea he kiʻekiʻe ko lākou kiʻekiʻe magnetic flux density, i hoʻohālikelike ʻia me nā ʻano mea magnet ʻē aʻe, "hoʻohua i kahi kahua magnetic ʻoi aku ka paʻa a no laila e mālama i kahi puka paʻa. voltage”..
ʻO ka XX-2 MKII he haʻahaʻa haʻahaʻa (6 ohm) i loko a me kahi haʻahaʻa haʻahaʻa haʻahaʻa o 0.28 mV.Aia kona kaʻa i loko o kahi hale alumini 7075 a me ke kaumaha o ka pahu pahu he 9.2 grams.Hōʻike ʻia ka hoʻokō ma 10 µm/mN a paipai ʻo Dynavector i kahi haʻahaʻa haʻahaʻa (30 ohms).
Hoʻohana ka 20X2 i kahi stylus MicroRidge hāmama ma kahi cantilever tube dural, ʻoiai ʻo ka XX-2, ka pahu pahu liʻiliʻi loa ma ka laina Dynavector, hoʻohana i kahi cantilever boron paʻakikī me kahi stylus Pathfinder me kahi laina laina 7 × 30 µm ma ka piko.Inā wau e hoʻomanaʻo pololei, ʻo ia ka daimana Ogura i hoʻohana ai ʻo Lyra lāua ʻo Koetsu.
Footnote 3: ʻAʻole paʻakikī ka hoʻoholo ʻana i ka loaʻa ʻana o kahi pae phono transimpedance: ua like ia me ka mea maʻamau, ʻo ka ratio o ka volta hoʻopuka i ka volta hoʻokomo a i ʻole ka hopena o kēia manawa i ka manawa hoʻokomo - koho i kekahi o lākou.Akā, ʻaʻole ia ka nui o ka hoihoi no kahi kahua phono hoʻokomo i kēia manawa, nona kāna hana e hoʻololi i ke ʻano i ka volta.No kēlā ʻano mea, ʻaʻole hiki ke hoʻohālikelike ʻia ka hoʻohālikelike o ka step-up transformer, ʻo ia paha ke kumu i hoʻoholo ai ʻo Ron Sutherland e kapa i kēia huahana SUTZ: hiki ke noʻonoʻo ʻia he ʻano hou o ka transformer step-up, ʻoiai inā ʻaʻole ia he transformer i ka mea maʻamau. manaʻo.No ke aha ʻo Z ma hope?Malia paha no ka mea ʻo ke ala kūlohelohe e ʻike ai i kahi mea transimpedance ʻo ia ka ratio o ka volta hoʻopuka i ka hoʻokomo ʻana i kēia manawa, nona nā ʻāpana o ka impedance, i hōʻike pinepine ʻia e ka leka Z. – Jim Austin Jun 30 '11 ma 12:00
Footnote 4: Dynavector Systems Ltd., 3-2-7 Higashi-Kanda Chiyoda-ku Tokyo 101-0031 Iapana.Kelepona: +81 (0) 3-3861-4341.Paena pūnaewele: www.dynavector.com US Distributor: Toffco, 2020 Washington Ave., Unit 314, St. Louis, MO 63103. Kelepona: (314) 454-9966.HKH: dynavector-usa.com
Footnote 5: ʻO nā helu ma hope o "Alnico" e pili ana i nā huila kūikawā o ka alumini, nickel, cobalt, keleawe a me ka hao.He waiwai nui ʻo Alnico 5 i ka cobalt a ʻoi aku ka ʻoi aku o ka magnetic ma mua o nā alloy Alnico ʻē aʻe.ʻO kēlā me kēia hihia, ʻoi aku ka maʻemaʻe transients a me ka leo ʻoi aku ka maikaʻi o nā kīkā uila me Alnico 5.— Jim Austin
$3,800 no ke kahua phono kiʻekiʻe, ʻoi aku ka maikaʻi ma mua o ke kumu kūʻai kūʻai kūʻē ʻo $89,000 no ka CH Precision P1 phono stage i loiloi ʻia i ka pule i hala.A ʻoi aku ka maikaʻi o kēlā "hiki" no ke kumukūʻai o 24.
Makemake au e hoʻomaopopo i ke kani ʻana o ke kahua phono transimpedance i ka hāmama a me ka ea ke hoʻouka ʻia me kahi pahu impedance haʻahaʻa.Ua aʻo mai iaʻu i nā makahiki o ka ʻike me nā pae phono kuʻuna e hiki ke hoʻopau i ka leo o ka pahu pahu i ka hoʻoiho ʻole ʻia.No ke aha i hiki ʻole ai kēia me nā pae phono transimpedance?
E noʻonoʻo ʻoe e like me ka hana o nā mea haʻahaʻa haʻahaʻa haʻahaʻa, huki / huki hou lākou mai ka amplifier, e ʻike kākou, ʻoi aku ka māmā o nā mea haʻiʻōlelo ma mua o nā mea haʻahaʻa impedance haʻahaʻa.
Ua hoʻouka mākou i ka Supex SD900 me 1000 ohm, 500 ohm, 100 ohm, 50 ohm a me 10 ohm, ʻo ke kani hoʻomaʻemaʻe a maikaʻi loa ma 10 ohm, akā pono ʻoe i ka waiwai kiʻekiʻe a "hiki" ke kani inā i hoʻolālā hewa ʻia.