[ Zil Vern @ 21.10.2011. 10:36 ] @
| Pošto je ova oblast za mene "špansko selo" može li neko da objasni šta je potrebno za kvalitetno slušanje FM radio stanica. Dakle, šta je FM tjuner, risiver, amplifajer, ekvilajzer itd. (ako ima još nešto), te kako se to sve povezuje sa zvučnicima. Koliko sam ja razumio risiver bi trebao biti samostalna jedinica, na koju se spoje zvučnici, dovede signal s antene - i to je to. Tjuner nije samostalan već mora postojati i amplifajer (pojačivač ili predpojačivač ?), a zatim dolaze zvučnici. Da li su ove "tekstualne" šeme dobre, ili im nešto nedostaje: 1° FM antena -> FM risiver -> zvučnici 2° FM antena -> FM tjuner -> pojačivač -> zvučnici Kod svih FM tjunera/risivera koje sam vidio na internetu (a i na Kenwood liniji koju imam - sve u jednom: CD plejer, AM/FM radio, dupli kaset dek i zvučnici, kupljeno prije nekih 11 godina) podešavanje frekvencije se vrši na dva decimalna mjesta u koraku od 50 kHz (npr. 92.05 MHz , 92.10 MHz, itd.). Postoje li digitalni tjuneri/risiveri (sa RDS-om i svim ostalim novatorijama) u prodaji sa korakom podešavanja od 10 kHZ (npr. 92.01 MHz, 92.02 MHz, itd.) ili sa tri decimale (podešavanje na 1 kHZ - 92.113 MHz), ili je to malo previše za FM područje? Ovo me zanima jer želim da nabavim što osjetljiviji (selektivniji) prijemnik, kako bih mogao da hvatam radio stanice koje emituju na bliskim frekvencijama. Nekada su bile poznate marke JVC, Sharp, Technics, Panasonic, Pioneer, Aiwa, Toshiba, Grundig, Fisher, Kenwood. No, sada su tu "neki novi klinci". Do prije pet-šest dana nikada nisam čuo za Onkyo, Denon i Advance Acoustic. Evo nekih uređaja koji se mogu kupiti u Beogradu (neću navesti prodavnice, da ne bih "izletio" s foruma): Denon stereo risiver DRA 500AESPE ---------------------------------- •Snaga 75 w +75 w (8 oma, 20Hz - 20kHz, 0,08% THD) •Frekventni odziv 10 Hz - 100 kHz +0 dB, -3 dB (na 1V) •Pretpojačalo •Ulazna osetljivost / impedansa •DVD-/ VDP, AUKS, CD-R/TAPE1, MD/TAPE2, CD-200 mV/47 kOhms •Izlazni nivo / load impedance •CD-R/TAPE1, MD/TAPE2 200 mV/47 kOhms •Ton kontrolu Visoki: ± 10 dB na 10 kHz, bas: ± 10 dB na 100 Hz FM članu •Tuning frekvencijski opseg 87,5 - 108,0 MHz •Korisna osetljivost 1,0 iV (11,2 dBf) •Odnos signal / šum (ponderisane) mono: 77 dB, stereo: 72 dB •Totalna harmonijska distorzija mono: 0,15%, stereo: 0,3% •Frekventni odziv 20 Hz - 15 kHz, +0,5, -1.5 dB •Stereo Separacija 43 dB (1 kHz) Član PM •Tuning frekvencijski opseg 522 - 1611 kHz •Korisna osetljivost 18 iV •Napajanje: AC 230 V, 50 Hz •Potrošnja struje: 235 W •Dimenzije (ŠxVxD): 434 x 147 x 414 mm -------------------------------------- Cijena: 350 evra Kenwood stereo risiver RA-5000 ------------------------------ •Stereo risiver sa HDMI podrškom •Maksimalna izlazna snaga: 120 W x 2 •HDMI verzija 1.4a sa 3D podrškom i Audio Return Channel 4 ulaz/ 1 izlaz •2.1 virtual surround (Dolby Virtual) sa samo 2 zvučnika •Tuner: •Tuner (AM/FM) •Radio Text •Memorija 40 kanala •FM Frekventni raspon: 87.5MHz ~ 108MHz •AM Frekventni raspon: 531 ~ 1602kHz •Surround formati: •Stereo •DTS Digital Surround •DTS 96/24 •Dolby Digital •Dolby Virtual Speaker •2 Channel PCM •DSD •Audio: •D/A konverter: 24-Bit/192kHz •32-Bit Floating Point DSP •Midnight Mode for Dolby Digital/DTS •Active EQ •Tone Control: Bass/Treble •X-Bass / Bass Boost •Adjustable Subwoofer Cross-over Frequency •Digitalni ulaz/izlaz: •Optički audio ulaz x2 •Koaksijalni audio ulaz x1 •HDMI ulaz x4 •HDMI izlaz x1 •Analogni ulaz/izlaz: •RCA Audio/Video ulaz: 2 A / 3 AV •RCA Audio/Video izlaz: 1 Video izlaz •Kompozitni Video ulaz/izlaz: 2 / 1 •RCA AV prednji ulaz •Subwoofer izlaz •Screw-type Speaker Terminals •Priključak za slušalice: 6.3 mm •Konektor za 75 Ohm FM antena •Konektor za AM antenu •Video specifikacije: •Video Format: PAL/NTSC •Input/Output Level: Kompozitni 1Vp-p (impendansa 75 Ohm) •Potrošnja: •Potrošnja pri radu: 200 W •Potrošnja u stand-by režimu: manje od 0.5 W •Boja: crna •Dimenzije (ŠxVxD): 43 x 15.9 x 38.4 cm •Težina: 8.3 kg --------------- Cijena: 340 evra Marantz stereo risiver SR 5023S -------------------------------- •2k 80 V RMS 8 oma •RDS FM / AM tjuner •Full Dot matrik ekran •50 Stanica memorija •Source direct •6 analognih ulaza, uključujući Phono MM •Izlaz za sabvufer •Sistem daljinskog upravljanja ------------------------------ Cijena: 500 evra ONKYO TX 8255 (SILVER) ----------------------- AMPLIFIER AND CONNECTIVITY FEATURES •90 W/Ch, 4 Ohms, 1 kHz, IEC (1 Channel Driven) •WRAT (Wide Range Amplifier Technology) •High-Current, Low-Impedance Drive •Discrete Output Stage Circuitry •5 Audio Inputs (CD,Tape 1,Tape 2, Line 1/DVD, Line 2) and 2 Outputs •Phono Input •Massive Power Transformer •Heavy-Duty Extruded Heat Sink for Maximum Heat Dissipation •Speaker A/B Drive •IR Input/Output •Independent Treble, Bass, and Balance Control TUNER FEATURES •40 FM/AM Random Presets •Direct Access Tuning with 10 Key Buttons •RDS (PS/PTY/RT/TP) OTHER FEATURES •Newly Designed Brushed Hairline Aluminum FrontPanel •Headphone Jack •Audio Mute (via Remote) •3-Mode Display Dimmer (Dim/Dark/Normal) •Sleep Timer (via Remote) •Battery-Free Memory Back-up •Non-Resonant Feet •Compatible with RI Dock for the iPod •Banana Plug-Compatible Speaker Posts •RI (Remote Interactive) Remote Control --------------------------------------- Cijena: 270 evra ONKYO TX 8555 (SILVER) ----------------------- AMPLIFIER AND CONNECTIVITY FEATURES •125 W/Ch, 4 Ω, 1 kHz, IEC (1 Channel Driven) •WRAT (Wide Range Amplifier Technology) •High-Current, Low-Impedance Drive •Discrete Output Stage Circuitry •2 Audio (CD,Tape) and 4 A/V (Game/TV, CBL/SAT, DVD,VCR/DVR) Inputs •1 Audio and 1 A/V Output •Zone 2 Pre Out •Subwoofer Pre Out •Phono Input •Massive Power Transformer •Heavy-Duty Extruded Heat Sink for Maximum Heat Dissipation •Speaker A/B Drive •Direct Mode •Pure Audio Mode •IR Input/Output •Independent Treble, Bass, and Balance Control TUNER FEATURES •40 FM/AM Random Presets •Preset Station Naming (Up to 8 Characters) •Direct Access Tuning with 10 Key Buttons •RDS (PS/PTY/RT/TP) OTHER FEATURES •Newly Designed Brushed Hairline Aluminum Front Panel •Headphone Jack •Audio Mute (via Remote) •3-Mode Display Dimmer (Dim/Dark/Normal) •Sleep Timer (via Remote) •Battery-Free Memory Back-up •Non-Resonant Feet •Compatible with RI Dock for the iPod •Banana Plug-Compatible Speaker Posts •RI (Remote Interactive) Remote Control --------------------------------------- Cijena: 350 evra ONKYO TX-SR309 BLACK --------------------- 5.1-Channel Home Cinema Receiver Key features •HDMI® Support for 3D Video and Audio Return Channel •Direct Digital Connection of iPod/iPhone via USB •Convenient Overlaid On-Screen Display via HDMI •Four Audio Game Modes for More Realistic Action •Advanced Music Optimizer ADVANCED FEATURES •HDMI® Support for 3D, Audio Return Channel, Deep Color™, x.v.Color™, LipSync, Dolby® TrueHD, DTS-HD Master Audio™, DVD-Audio, Super Audio CD, Multichannel PCM, and CEC •Direct Digital Connection of iPod/iPhone via Front-Panel USB Port •Dolby® TrueHD, DTS-HD Master Audio™, Dolby® Digital Plus, DTS-HD High-Resolution Audio™ Decoding •Overlaid On-Screen Display (OSD) via HDMI AMPLIFIER FEATURES •100 W/Ch at 6 Ω, 1 kHz, 1%, 1 Channel Driven, IEC •H.C.P.S. (High Current Power Supply) Massive High Power Transformer •Optimum Gain Volume Circuitry •PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio PROCESSING FEATURES •TI Burr-Brown 192 kHz/24-Bit DACs for All Channels •Advanced 32-Bit Processing DSP Chip •4 DSP Modes for Gaming: Rock, Sports, Action, and RPG (Role Playing Game) •Advanced Music Optimizer for Compressed Digital Music Files •Mass Storage Class USB Memory Playback Capability •Theater-Dimensional Virtual Surround Function •CinemaFILTER™ •Direct Mode •Double Bass Function •Non-Scaling Configuration •A-Form Listening Mode Memory CONNECTION FEATURES •3 HDMI Inputs and 1 Output •HDTV-Capable (720p/1080i) Component Video Switching (2 Inputs and 1 Output) •5 Composite Video Inputs (1 Front/4 Rear) and 2 Outputs •3 Digital Audio Inputs (2 Optical and 1 Coaxial) •6 Analog Audio Inputs (1 Front/5 Rear) and 1 Output •Subwoofer Pre Out •Speaker A/B Terminals •Color-Coded Speaker Terminals •Headphone Jack OTHER FEATURES •Crossover Adjustment (40/50/60/70/80/90/100/120/150/200 Hz) •A/V Sync Control (Up to 400 ms at 48 kHz) •Tone Control (Bass/Treble) for Front L/R Channels •3-Mode Display Dimmer (Normal/Dim/Dimmer) •RDS (PS/RT/PTY/TP) •40 FM/AM Random Presets •RIHD (Remote Interactive over HDMI) for System Control •Compatible with RI (Remote Interactive) Dock for iPod/iPhone •Full-Function RI Remote Control -------------------------------- Cijena: 340 evra Koji je od ovih najkvalitetniji za što je moguće selektivniji prijem radio stanica? Interesuje me prvenstveno FM prijemnik (kao jedna cjelina) na koji se odmah mogu povezati zvučnici. Pretpostavljam da je to risiver. One varijante tjuner + pojačalo, tjuner + predpojačalo (i eventualno pojačalo ??), tjuner + još nešto, nisu mi prihvatljive zbog cijene. I još jedno pitanje u vezi sa zvučnicima. Ovo su sistemi koji podržavaju 4, 5, 6 ili 7 zvučnika. Zanima me da li se, na početku, dok ne nabavim nešto moćnije, mogu priključiti dva najobičnija kompjuterska zvučnika od 10-tak evra, a da se pri tome ne spale ni uređaj ni ti zvučnici? Na šta treba obratiti pažnju prilikom kupovine zvučnika (vati i omi ?)? Dakle, kako moraju biti usklađeni vati na uređaju sa vatima zvučnih kutija, pa da se ništa ne spali? Zil Vern |
) zvucnike mozes spaliti, ako stavis dosta slabije od pojacala.. isto tako ako stavis dosta jace 
