01 na 08
Ƙarƙashin Ƙarfin Ƙarya: Lepai LP-2020A + vs. Topping TP30
Wadannan sune lokuta masu kyau don cheapskate masu sauraro. Mun gode wa karuwar masu cinikin yanar gizo na Geek irin su Express Parts da kuma Monoprice akwai dukkanin kayan da ke cikin sauti a farashin da ba za a iya samun 'yanci ba.
Amma Shin Dukkan Kasuwanci: Dukansu Ƙananan Kuɗi ne
Tambayar, ba shakka, ta yaya suke da kyau?
Ɗaya ƙungiya inda farashin ke iya nuna rashin amfani shine ƙananan ƙarfin haɗin hadedde. Wadannan amps yawanci suna da nau'i daya ko biyu, ikon sarrafawa, kuma watakila 10 ko 20 watts na iko da tashar. Kila ba za ku yi wa waɗannan maganganu ba har zuwa dillalan maganganu na ƙwararru mai mahimmanci na $ 2,000, amma suna kallon tikitin don, in ce, tsohuwar JBL ko Polks, ko sabon sababbin B652s na Dayton.
Kuma duba fitar da farashin! Lepai LP-2020A +, wanda aka kiyasta a 20 watts ta tashar, yana da kusan $ 26.88.
Amma jira a minti daya! Shafuka na Sha'anin yana samar da Topping TP10-MK4, wanda ke biyan dala 72 amma an kwatanta shi ne kawai a watannin 10 watts ta hanyar tashar zuwa 8 ohms. Dukansu suna amfani da fasaha mai mahimmanci na Class T, saboda suna fitowa ne daga kamfanin mai suna Tripath. Yana da alamar kasuwanci ce, ba ɗayan tasiri mai mahimmanci ba; shi ne kawai wani nau'i na haɓakaccen tsari Class D (switching).
"Me ya ba?" Ina mamakin lokacin da na ga amps biyu. Tabbatacce, Topping ya dubi mai kyau, amma yana da wasu abubuwan da za su amfana da farashin kusan 3x?
Sai kawai na gano. Amma maimakon sauraro da su kawai kuma ya gaya maka cewa wanda yana ba da cikakkiyar "cikakken bayani" ko fiye da "ruwa mai yawa," zan yi abin da mafi yawan masu dubawa ba za su iya ba: Zan yi aiki a kan su don gano abin da ke faruwa.
02 na 08
Masu gasar
Samun Shirya don Daidaitawa
Na saya kaina LP-2020A + makonni kadan da suka wuce, da kuma masu magana a kan Dayton B652. B652, duk da haka, ya zama abin ban mamaki - ba abin da kowa zai kira mai magana mai ladabi ba, amma abin mamaki ne, musamman don $ 32 / biyu.
Kamar yadda sa'a zai samu, abokin aiki na Geoff Morrison ya kasance yana da Topping TP30 yana zaune a kusa da shi, wanda ya zama kamar maɗaukaki guda ɗaya kamar TP10 MK4 tare da ƙari da jakadar murya da kuma shigar da dijital na USB. Hakika, TP30 ba ta samuwa.
Don haka ina da abokan hamayya na biyu. Yin la'akari da samfurori kawai, LP-2020A + zai iya zama mafi kyau, tare da 20 watts ta hanyar tashar maimakon 10. Duk da haka, ba zan iya samun wani abu ba a shafin shafin Express Parts wanda ya ce yadda aka auna 20 watts. Domin karfin ikon ƙarfin mahimmanci na nufin wani abu, kana buƙatar saka adadin da aka gwada shi (yawanci 8 ko 6 ko 4 ohms); matakin jimlar jita-jita tare da amo (THD + N) inda aka ba da izinin ikon (yawanci 0.5% ko 1% ko 10%); mita ko mita mai tsawo wanda aka gwada gwajin; da kuma yawan tashoshi da aka kori.
Kamar yadda kake gani a cikin kwamiti na baya da aka sama a sama, TP30 yana samfurin ingantaccen kayan aiki, tare da ƙararraki mai rikitarwa da keɓaɓɓen lasifikar sadarwa da masu haɗin RCA.
Rubutun ra'ayin rubutu
Bayan an buga wannan labarin, mai aikawa (godiya, Jerrold!) An aika da shi don nuna cewa wasu masu LP-2020A + sun inganta haɗinsu tare da ƙarin iko, 5-amf samar da wannan daga Amazon. Wanda ya karfafa ni don sake dubawa a kan shafukan shafin Express Parts. Shafin LP-2020A + a kan wannan shafin yana ƙidayar samar da wutar lantarki tare da LP-2020A + aka gwada a nan a 2 amps. Amma ana samar da wutar lantarki a 3 amps. Ana yin amfani da amplifier da kanta don samar da samfurin 2.
Yayi, bari mu toshe 'im in kuma ga abin da ya faru.
03 na 08
Lepai LP-2020A + Ana fitar da wutar lantarki
Gwada LP-2020A +
Don ganin idan LP-2020A + yana rayuwa har zuwa gagarumar ikon wutar lantarki na 20-watts-channel , na yi amfani da mai jarida na Fio 10 na FW don gudanar da rikici tare da raguwa vs. Rashin wutar lantarki a 1 kHz. Jimlar jita-jita tare da amo (THD + N) matakin yana kan Y (a tsaye tsaye), yayin da fitowar wutar lantarki (a watts) yana tsaye a kan X (a kwance). Ga abin da na samu.
8-ohm load, biyu tashoshin kore
9.1 watts a 0.5% THD
9.9 watts a 1% THD
A cikin 4-ohm load, LP-2020A + ya ci gaba da shiga yanayin karewa (fitarwa mai sauƙi, haske mai haske a kusa da ikon ƙararrawa) kafin a gama kammala, ko ta yaya zan saita siginan sigina. Na ƙare har auna ma'auni na max ta hannun. Babban abin da zan iya samu a 4 ohms shine 9.4 Watts a 1.5% THD + N.
Kula kuma cewa murgule tare da amo yana gudana sosai a ƙananan matakan: 0.5% da 1% THD + N tsakanin 0.1 da 2.4 watts. Mafi rinjayen sauraronku zai kasance a waɗannan matakan ƙananan, ba a cikin yankin 5 zuwa 8-watt inda amp ya yi mafi kyau ba.
Wadannan ma'aunin suna cikin tsangwama - abin da ake kira nauyin kullun da kayan fasahar fasaha kamar na yi amfani da su domin sun ba mu tushe mai kyau (kamar yadda masu magana suke magana, wanda rashin haɓaka ya bambanta da yawa). Na sani, duk da haka, wasu kundin Class D amps ba su da tsada bisa dogara da samun mai magana da ya dace don aiki daidai; ƙwaƙwalwar mai magana da haɓaka ta ƙwace dukkan ƙarfin mitar rediyo da aka samar ta amp. Don haka sai na yi gudu tare da masu magana da Hsu-Hb-1 Mk2 na Hsu (7,7 ohms a 1 kHz) da aka haɗa a maimakon rikici. Sakamako sun kasance kamar guda: 8.9 watts a 0.5% THD, 9.8 Watts a 1% THD.
04 na 08
Topping TP30 Ana fitar da wutar lantarki
Gwada TP30
Shafin da ke sama ya nuna Topping TP30 da aka auna a ƙarƙashin yanayin. Hanyoyin kore suna cikin kullin 8-ohm, mai launi mai launi yana cikin kima 4-ohm.
8-ohm load, biyu tashoshin kore
9.3 Watts a 0.5% THD
10.3 Watts a 1% THD
4-ohm load, duka tashoshi ana kori
16.4 watts a 0.5% THD
17.4 watts a 1% THD
Ka lura da yadda TP30 ya kaddamar da LP-2020A + kodayake takaddunanta ba su da kyau? Kawai kawai ya nuna maka - amsoshin ma'ana ba kome ba sai dai idan yanayin gwajin (matakin THD + N, yawancin tashoshi da aka kori, cajin ƙwaƙwalwa, da sauransu) an ba su.
Ka lura cewa yayin da fassarar TP30 da motsa kamar ƙananan matakan ba abu mai girma ba, yana da kyau fiye da LP-2020A +, yana kasancewa ƙarƙashin ƙasa 0.5% a matakan tsakanin 0.4 watts da max.
05 na 08
Topping TP30 Answers Frequency
Sakamakon karɓaccen lokaci shine ma'auni na yadda maɗaukaki ya haɗu da dukkan ƙwararruwan sauti, daga bass zuwa bambance-bambance. Domin amplifier, sakamakon karshe shine lalataccen launi a 0 dB.
Ina sa sakamakon TP30 a nan na farko saboda na iya samun ma'auni na al'ada daga gare ta. Ƙarin game da sakamakon LP-2020A + da ke faruwa akan wannan gwaji yana zuwa sama.
Amsar lokaci, 8-ohm load, ref. matakin 2.83 volts (1 watt)
-0.32 dB a 20 Hz
-0.50 dB a 20 kHz
Hanyar kuskuren Channel a 1 kHz, 8-ohm load, ref. matakin 2.83 volts (1 watt)
tashar dama +0.11 dB mafi girma daga hagu
Bugu da ƙari, ba wani sakamako mai ban mamaki ba, amma ga mai amfani maras amfani ba shi da kyau.
06 na 08
Lepai LP-2020A + Response Frequency
Lokacin da na yi ƙoƙari na auna ma'auni na mita LP-2020A + ta yin amfani da tsayayyar matakan da na ambata a baya, na sami sakamako marar kyau. Bass sunyi birgima, sauka -3 dB a 76 Hz. Duk da haka, ban lura da rashin bass lokacin da na saurari LP-2020A +, saboda haka sai na yi tunani cewa sakamakon zai iya zama saboda wasu hanzari na LP-2020A + lokacin da aka tsayar da kaya.
Don haka sai na yanke shawarar auna ma'auni ta hanyar haɗa LP-2020A + zuwa ɗaya daga cikin masu magana na Hsu HB-1, ajiye murya a gabansa, yin daidaitattun mita akan mai magana, sa'annan sake maimaita yin amfani da Topping TP30 maimakon na LP-2020A +. Kuna iya ganin sakamakon a cikin hoton da ke sama, inda alamar blue yana nuna sakamakon tare da TP30, kuma kore alama ya nuna sakamakon tare da LP-2020A +. Wadannan sakamakon suna tare da sauti na LP-2020A + da aka kashe.
Amsar lokaci, 8-ohm load, ref. matakin 2.83 volts (1 watt)
+4.86 dB a 20 Hz
0.00 dB a 20 kHz
Hanyar kuskuren Channel a 1 kHz, 8-ohm load, ref. matakin 2.83 volts (1 watt)
Hagu na hagu +0.21 dB mafi girma daga dama
Ka lura cewa amsawar LP-2020A + na ainihi shine -1.26 dB a ƙasa da na TP30 a 30 Hz. Saboda wasu dalili, LP-2020A + yana da ƙarfin gaske a 20 Hz. Ganin cewa akwai nauyin Hz 20 a cikin fina-finai da kiɗa, kuma cewa kawai mafi yawan masu magana da subs za su iya haifar da 20 Hz, ba abin da za ku ji ba. Ba kamar wannan ɗan amfãni ba zai iya sadar da fitarwa a 20 Hz duk da haka.
Hakanan, mahimmanci, ko ma'auni na tonal, na waɗannan amps guda biyu ne game da wannan.
07 na 08
Lepai LP-2020A + Ƙarfin Ƙarfin Tsare
Wadannan sune tasirin sauti a kan LP-2020A + - sake, wanda aka auna ta hanyar tafiyar da amp ta hanyar mai magana Hsu HB-1 Mk3. Sakamakon zane yana haifar da ciwon bass da kuma tsarin kulawa wanda ya juya gaba daya. Sakamakon ja shine sakamakon rinjayar da aka juya a duk hanya.
Ƙaramar mahimmanci kuma yanke duka duka yana kan tsari na 10 zuwa 12 dB, wanda shine babban maɗaukaki. Lura cewa ana ɗaukar waɗannan ma'auni a matakin kula 1 watt. Idan kayi amfani da waɗannan rukuni har zuwa duk matakan sauraron ƙararrawa, LP-2020A + bazai da isasshen ikon da za ta iya samar da ƙarfin da kake gani a nan.
08 na 08
Bayanan sauraro da Ƙarshe
Sauran saurare
Ta yaya waɗannan bambance-bambance suka fassara zuwa ainihin sauraron sauraro? Don ganowa, Na kwatanta amps biyu a matakan sauraron da aka haɗa da Hsu HB-1 masu magana. Na lura da abu ɗaya a nan da nan: Topping TP30 na iya amfani da ƙari kaɗan. Dole ne in juya shi gaba ɗaya don in sami karfin darajar lokacin da na yi amfani da iPod touch as source - ko da yake HB-1 mai magana ne mai kyau.
A kunnena, LP-2020A + yana da mummunan yanayi a cikin ƙananan da ƙananan ƙarancin da ke sa muryoyin sauti kaɗan. A kan sauti na Terry Landry ya rubuta "Amazonas" wasu kayan katange na latin na da mahimmanci a gare su, kamar dai sun karya. Duk da haka, sautin LP-2020A + yana da ƙarar ƙararrawa, kamar yadda ma'aunin da aka nuna; TP30 yana sauti kadan a cikin tarkon ta kwatanta. Amma zurfin zurfi, masu ƙarfi suna lura cewa bude hotunan "Train Song" na Holly Cole ya yi ƙarar da hankali ta hanyar TP30.
Gaba ɗaya, zan ce TP30 sauti mafi kyau, ko da yake dukansu suna da ƙarfi da rashin ƙarfi. Ina tsammani wasu zasu fi son sauti na LP-2020A +. Kuma ina tsammanin wasu bazai lura da bambanci ba.
Kalmar Magana
Ya bayyana daga ma'auni cewa Topping TP30 shi ne abin da zan kira " ainihin amp ": Za ka iya haɗa shi zuwa kusan kowane mai magana kuma zai kawo kyakkyawar sauraron sauraro da sauti mai tsabta.
Lepai LP-2020A +, duk da haka, yana da alama ya haɗa wasu ƙaddarar aikin injiniya wanda ya ba da izinin bugawa farashi mai mahimmanci. Yana yin mahimmancin iko a cikin nauyin 8-ohm a matsayin TP30 mai ƙari 4x.
Ga shawarar na: Tambaya TP10-MK4 idan kuna haɗar tsarin tsararraki masu mahimmanci ko tsarin gida mai dakuna ko tsarin salon rayuwa. Samun LP-2020A + idan kuna so wani abu da ke sa sauti mai kyau, kamar tsarin garage ko yin wasa na jazz a ɗakin jiran.