01 ntawm 07
NAD Viso HP-50 Kev Tshaj Tawm
Ntawm no yog li cas kuv ntsuas cov kev kawm ntawm Viso HP-50. Kuv siv GRAS 43AG pob ntseg / cheek simulator, lub Clio 10 FW suab analyzer, lub laptop computer khiav TrueRTA software nrog M-Audio MobilePre USB audio interface, thiab Musical Fidelity V-Tau lub mloog xov tooj cua amplifier. Kuv muab cov kev ntsuas rau pob ntseg taw tes (ERP), roughly qhov taw tes rau hauv qhov chaw uas koj xib teg tshuam nrog lub axis ntawm koj lub pob ntseg kwg thaum koj nias koj txhais tes tiv thaiv koj lub pob ntseg - thiab txog qhov uas lub ntsej muag ntawm HP-50 tus neeg tsav tsheb npav xav zaum thaum koj hnav nws. Kuv tsiv lub pob ntseg me me nyob ib ncig ntawm lub pob ntseg / cheek simulator mus nrhiav txoj hauj lwm uas tau muab qhov zoo tshaj plaws bass teb thiab qhov feem ntau cov cwj pwm tshwm tag nrho.
Daim duab saum toj no qhia txog cov lus teb rau HP-50 nyob rau sab laug (xiav) thiab txoj cai (xim liab). Qhov kev ntsuas no raug coj los ntawm qhov kev xeem uas tau hais rau 94 dB @ 500 Hz, raws li kev pom zoo hauv lub IEC 60268-7 pob ntseg ntsuas cov qauv. Muaj kev pom zoo me ntsis txog seb qhov twg yog qhov "positive" teb rau hauv lub mloog pob ntseg, tab sis daim ntawv qhia no cia koj txais ib lub tswv yim txog tias qhov HP-50 yog kho li cas.
Tus HP-50's teb zoo li lub tiaj tiaj thaum piv rau feem ntau ntawm cov headphones kuv tau ntsuas, nrog ib qho yooj yim thiab sab heev boost hauv lub treble ntawm 2 kHz thiab 8 kHz. Qhov txawv ntawm bass cov lus teb ntawm ob txoj kab yog tej zaum vim muaj qhov sib txawv ntawm lub pob ntseg / plhaw simulator; ob leeg sawv cev qhov zoo tshaj plaws bass teb kuv tau txais los ntawm txhua channel.
Zog ntawm HP-50, ntsuas nrog ib tug 1 mW lub teeb tsa los ntawm cov kwv yees 32 ohms impedance thiab ntawm thaj tsam ntawm 300 Hz mus rau 3 kHz, yog 106.3 dB.
02 ntawm 07
NAD Viso HP-50 vs. PSB M4U 1
Daim duab ntawm no qhia tau hais tias lub sij hawm luv ntawm HP-50 (xiav kab sib tw) piv nrog PSB M4U 1 (lub nyuab ntsuab), uas tau hais tawm los ntawm Paul Barton. Raws li koj tau pom, cov kev ntsuas yeej zoo ib yam, nrog rau HP-50 uas tsis tshuav tsawg zog 1 kHz thiab ib nyuag ntxiv zog 2 kHz.
03 ntawm 07
NAD Viso HP-50 Kev Tshawb Xyuas, 5 thiab 75 Ohms
Cov lus teb ntawm HP-50, txoj cai channel, thaum pub los ntawm ib tug amp (Musical Fidelity V-Tau) nrog 5 ohms tso tawm impedance (liab kab), thiab nrog 75 ohms tso tawm impedance (ntsuab kab). Qhov zoo tshaj plaws, cov kab yuav tsum sib zog txig - raws li lawv ua ntawm no - uas pom tias tus HP-50's tonal ua cim yuav tsis hloov yog tias koj txuas mus rau qhov kev lag luam zoo dua qub, xws li cov laptops thiab pheej yig smartphones.
04 ntawm 07
NAD Viso HP-50 Spectral Decay
Spectral lwj (dej tsaws tsag) ntawm HP-50, txoj cai channel. Cov kab xiav ntev ntev qhia tias resonances, uas feem ntau yog tsis nyiam. Lub pob ntseg no qhia tob (thiab tej zaum tsuas yog me ntsis yog thaum tag nrho cov pa) resonances ntawm 1.8 kHz thiab 3.5 kHz.
05 ntawm 07
NAD Viso HP-50 Distortion
06 ntawm 07
NAD Viso HP-50 Empedance
07 ntawm 07
NAD Viso HP-50 Rho tawm
Kev rho tawm ntawm Viso HP-50, txoj cai channel. Qib qis tshaj 75 dB qhia tias kev tawm suab ntawm sab nraud nrov - ie, 65 dB ntawm cov ntawv qhia txhais tau hais tias yog -10 dB txo qis sab nraum lub suab ntawm lub suab nrov ntawd. Qhov qis ntawm kab yog nyob rau hauv daim qauv, qhov zoo dua. Tus HP-50 txoj kev sib cais yog qhov zoo tshaj rau lub mloog pob ntseg uas tsis yog pob ntseg, txo cov suab sab nraud ntawm -15 dB ntawm 1 kHz thiab los ntawm ntau npaum li -40 dB ntawm 8 kHz. Nco ntsoov tias tsis muaj qhov txo ntawm cov nquag muaj tsawg tshaj li 200 Hz, yog li ntawd tus HP-50 yuav tsis ua ntau kom txiav tawm suab nrov lub suab.