Kunaka kwekusanzwisisika - Pathos Inpol 2 mkII
Muchikamu chinotevera che "Audio" - bvunzo yeasina kujairika amplifier - Pathos Inpol 2 mkII. Kunyangwe pakati pezvinodhura, zveumbozha uye avant-garde zvigadzirwa, chigadzirwa ichi chakasiyana, chine nharo uye chakatsveyama. Tichazvifunga pasina dhizaini yakagadzirwa, funga nezve kurongeka kwekufungidzira kwekuvakwa uye kusanzwisisika kweimwe nzvimbo. Asi zvisinei kuti ndezvipi mhedziso dzatinosvika kwadziri, isu zvirokwazvo tichajairana neinofadza uye yakanaka chimiro. Nenzira, ngatirangarirei yekutanga parameters yeamplifiers.
Inoshandisa mhinduro dzakawanda dzakabatana zvakanaka neaudiophiles - vane maonero munzira хороший звукkunyange zvazvo vasingawanzoiti kana kuti havawanzopa migumisiro yakanaka yezviyero zvakakosha. Nechekare muchikumbiro ichi pane akati wandei mapfupi nemakomba.
“Basic measurements” zvinorevei? Sechinyakare, mune instrumentation amplifiers, ivo rated simba kuyerwa (yakagadzirirwa 1% THD + N) yezvakasiyana-siyana zvinokanganisa (zvinotenderwa nemugadziri), kutapurirana frequency mhinduro (pa2,83 V), chinhambwe kubva kune ruzha (2,83 volts mu8 ohms). Kune izvi zvinogona kuwedzerwa kuyerwa kweiyo inobuda impedance (iyo inosarudza iyo inoderedza chinhu), iyo THD + N hunhu zvichienderana nesimba (kune chaiyo frequency, 1 kHz ndiyo yakajairwa), iyo harmonic spectrum (1 kHz, panguva yakatarwa. simba - semuenzaniso, 1/4 yesimba rakatemerwa).
Iyi seti yezviyero inopiwa neAUDIO laboratory. Zvakawanda uye zvishoma. Zvakaoma kuongorora amplifier yega yega yakaedzwa zvakatonyanya, kunyangwe zviri nyore kufungidzira kuti kunyangwe zviyero zviri pamusoro zvinogona kuwedzerwa multidimensionally, semuenzaniso, nekuongorora harmonic spectrum yeimwe yakakosha frequency uye rakasiyana simba kana kubuda simba ne akasiyana impedance mhinduro (chaizvoizvo kwete inodzivirira mutoro). Iyi seti haibatanidzi mamwe marudzi mazhinji easina mutsara kukanganisa - chikamu, musiyano, intermodulation, iyo inogona kukamurwa kuva yakanyanya "specialized" marudzi. Pakati peizvi, zvinogara zvichitaurwa pane TIM (transient intermodulation) kukanganisa kunoitika munzvimbo dzenguva pfupi, izvo zvinova musimboti wemasaini emimhanzi.
Iyo yedunhu mhinduro inosanganisirwa muInpol 2 mkII uye yakanyorwa pazasi ingave yakakosha kuvandudza zvimwe, zvakatonyanya kukosha uye chinangwa chekurira paramita uye maficha. Asi pfungwa dzoga hadzivimbisi kubudirira. Vazhinji vavo vanoda kutarisirwa kwakakosha mukuurayiwa. Kunyangwe tikabvuma kukosha kweTIM kukanganisa, mamwe akayerwa ma paramita achiri ane basa. Haufanire kubayira mamwe ese ma parameter kuti uderedze imwe mhando yekukanganisa. Iwe unogona kupa yakawanda sei? Mugadziri wega wega ari kutsvaga mhinduro uye resipi yake yemubvunzo uyu. Audiophiles vari kuzvitsvagawo, kunyangwe zvisiri kubva pakuyera kuyerwa. Asi vanoteerera kune zvinopfuura kungonzwika… Dai zviri izvo, waigona kuvasiya vaine kutaura kwekupedzisira uye kutungamirirwa nezvavanoziva zvinobva muhukama hwavo.
audio file Ivo zvakare vakananzva kubva kune imwe ruzivo rwehunyanzvi, uye sezvo ruzivo rwekuteerera rwakanyanya kuzviisa pasi, amplifier inozivikanwa kuve ine huwandu hweambitious, yakawandisa kana purist mhinduro dzinowanzo kunzwika se "zvirinani" pane "zvakajairika", kunyangwe iyo yakagadziridzwa yakatendeseka. . Kune rumwe rutivi, tine mufananidzo usina kukwana unobva pazviyero, izvo, zvisinei, "usareva nhema" uye unonyevera nezvematambudziko chaiwo, kune rumwe rutivi, mufananidzo wose unobva pamusangano wekuteerera, izvo, zvisinei, zvinogona kukanganisa. .
Muchidimbu - Inpol 2 mkII - hybrid amplifier. Kazhinji izwi iri musanganiswa wechubhu preamplifier ine yakasimba state simba amplifiers. Zvichibva pakuongorora kwechimbichimbi, zvingaite sekuti chirongwa ichi chakadhindwa neInpol 2 mkII. A quartet yemachubhu inoonekwa kumberi, uye ma radiator ane transistors akavanzwa mukati anoonekwa pamativi. Nekudaro, iyi haisi "yenguva dzose" yakasanganiswa. Kwemakore, Pathos yanga ichishandisa mhinduro ine patent inonzi InPol (uye ndizvo zvavanodaidza kuti amplifiers zvichibva pazviri). Iyo pfungwa mufungidziro yakajairika yakatokura, asi yakasarudzika zvekuti ikozvino yakabatana nePafosi.
Mune yakajairwa hybrid amplifier, iyo chubhu preamplifier inopa diki preamplifier (uye, ingave iri kana kwete, yakawanda yetoni kuumbwa) uye transistorized simba amplifier inopa yakawedzera voltage amplifier, ichiri kubvumira yakaderera-impedance mutoro (magudzanzwi) kuve. yakabatana, inoenderana nekugona kwazvino kweiyo system.
Muchikamu cheInPol, chikamu chete chechubhu chinopa kukwidziridzwa kwemagetsi. Zvisinei, iyi haisi kuguma kwenyaya, sezvo hurongwa hwakadaro hahukwanisi kupa yakaderera impedance (haigoni kuunza yakakwira ikozvino). Nechikonzero ichi, inobuda transformers mhinduro yakajairika muchubhu amplifiers, iro basa ndere kuenzanisa zvinodikanwa zvemachubhu kune "inotaura ruzha" mutoro (kusingabatanidze exotic transformerless overhead lines).
Muchikamu cheInPol, panzvimbo yezvinobuda zvinoshandura, pane transistor chikamu, asi haishande seyakajairwa simba amplifier. Nekuda kweizvozvo, simba reInPol maseketi harina kukwirira seyakajairika mahybrids, anofananidzwa nesimba kune transistor amplifiers. InPol inoderedza simba rema transistors pane ruzha, ichivasiya vakafanana nemachubhu ari muchikamu che preamp. Iyo simba amplifier pano inogona kutariswa senge inoenderana buffer inopa yakagadzika yekushanda mamiriro eiyo chubhu yedunhu inotarisira kukwidziridzwa. Iyo simba amplifier ine voltage kuwana yakaenzana nekubatana (maererano nemugadziri, uye maererano nemamwe masosi, zvishoma zvishoma, zvakatenderedza 1,3, asi izvi hazvishandure musimboti wenyaya).
Zvikamu zviviri izvi zvinoshanda mukirasi A; kunyangwe pakusaita basa, iyo amplifier inopisa ipapo, uye kunyangwe padiki simba inopisa zvakanyanya. Kuti uwedzere kushanda kwetipi, imwe mhinduro yepakutanga inooneka - imwezve passive circuit, inonzi naPaphos chigadziro chekuchengetedza simba. Inosanganisira coil hombe uye block ye coupling capacitors. Isu hatizive iwo chaiwo kukosha kwezvinhu zvinoshandiswa muInpol 2 mkII, asi mumapurojekiti apfuura akafanana Pathos akashandisa makoiri ane inductances pamusoro pe100mH. Iyi yakakwira inductance inoda waya gobvu uye musimboti kuti urambe uine mwero kuramba, saka macoil aya anoita sematransformer (asi ane mhepo imwe chete).
Iyo sisitimu inoshanda pasina mhinduro yepasirese. Ichi chinogara chiri sarudzo ine njodzi sezvo paine njodzi yekuwedzera ruzha, harmonic kukanganisa uye kubuda impedance, asi kubatanidza pachayo kunosuma izvo purists vanofunga zvakanyanya kukanganisa. Huipi hudiki (hweruzha) hunofanirwa kunge hwakakwira THD+N uye yakaderera damping factor.
Hurongwa hwese hwakaenzana. Iyo vhoriyamu yekudzora sisitimu yakasarudzika yepamusoro uye isingawanzo; Sezvo mutemo, vagadziri (kunyangwe mumidziyo inodhura kwazvo) vanoshandisa gadziriso dzakagadzirirwa nenzira yemasekete akabatanidzwa, uye Pafosi akagadzira dunhu rake kubva kubhatiri relays uye resistors.
Chekupedzisira, iyo amplifier yese ine mbiri mono circuit ine kaviri chikamu chemagetsi - kune maviri makuru e toroidal transformer.
Lab
Tarisira 2 × 45W mu8 ohms uye 2 × 75W mu 4 ohms, maererano nemugadziri. Pa8 ohms takayera 2 x 55 watts (a dual mono system inovimbisa mwero wakafanana wesimba paunenge uchimhanyisa chiteshi chimwe kana maviri panguva imwe chete), asi pa4 ohms simba rakadonha kusvika pa2 x 36 watts.
Kureba kune ruzha kwakaderera (78 dB), iyo inogona kutarisirwa kubva kune hombe pombi chikamu. Kune rimwe divi, maitiro ekutapurirana anonyatso kugutsa sezvaanosvika (pasina kuderedzwa kweiyo yakaderera frequency renji) kusvika pa70 Hz (3 dB kudzikiswa pa4 uye 8 ohms).
Iyo yekubuditsa impedance yakakwira - 0,37 ohms/1 kHz, zvinoreva kuti damping factor ye11 maererano ne4 ohm load - inofananidzwa nechubhu, kwete hybrid (transistor) amplifiers.
Kune rumwe rutivi, kukanganisa kwe transistor kunobatanidzwa neasinganzwisisiki harmonics, asi pano yechitatu ndiyo yakasimba (yakakwirira -62 dB); sezvineiwo wechipiri ishoma decibels yakaderera (-66dB) uye imwe yacho yakaderera pane -90dB. Mamiriro ezvinhu anotaridzika zvakanaka kune dunhu pasina mhinduro.
Maitiro arinani eamplifier ane 8 ohm mutoro, akacherechedzwa nesimba repamusoro rekubuda, anosimbiswa zvakare nekuyera THD + N sebasa resimba - iyi kuramba inovimbisa yakaderera nhanho pamusoro peiyo yese yakaedzwa renji. Kukanganisa kunovaka zvishoma nezvishoma, pasina kukanganisa kwakangoerekana kwaitika kwe transistor amplifiers - saka Inpol 2 mkII inoita sechubhu amplifier mune izvi.
