Froggy Posted August 16, 2012 Report Posted August 16, 2012 30 miliona ljudi je tih dana kupilo Brothers in Arms i isto toliko CD-playera, Å¡to je direktno omogućilo viÅ¡edecenijsku vladavinu tog nesrećnog "nosaÄa zvuka". Brothers in Arms je ubio vinil. Da, rado ću spaliti svaki primerak na koji naiÄ‘em. Nije tebi lako... Quote
ras Posted August 16, 2012 Report Posted August 16, 2012 "Brace po oruzju" ili "Brace u vojsci"? . evo, maxaudio se bavio tom simbolikom: http://www.hi-files.com/forum/index.php?/topic/179-sta-se-slusa/page__st__9880#entry435617 Quote
pera451 Posted August 16, 2012 Report Posted August 16, 2012 Ovde je termin "fusion" bas doslovno shvacen Fin©i neki ljudi. Quote
Å¡ale Posted August 16, 2012 Author Report Posted August 16, 2012 Niža glasnoća je 93 +/- 5 db na mestu sluÅ¡anja. Za testiranje sam koristio muziku razliÄitih žanrova. Projektovno je tako da pojaÄalo ima dovoljno rezervne snage da odsvira jak signal i da nema klipinga. Quote
dude Posted August 16, 2012 Report Posted August 16, 2012 "Brace po oruzju" ili "Brace u vojsci"? . Jbg.. Quote
Å¡ale Posted August 19, 2012 Author Report Posted August 19, 2012 Izradio sam tabelu-snaga u funkciji ambijenta sluÅ¡anja za sobu 22 m2 osetljivost kutije u db (2,83v)-snaga pojaÄala u rmsw/snaga kutije u rmsw 85 db - 80 w/120W; 86 db-70W/100W; 87 db-50W/80W; 88 db-40W/70W; 89 db-32w/50W; 90 db-25W/40w 91 db-20W/40W; 92 db-16W/40W; 93 db-12W/40W Napomena: merodavna minimalna snaga pojaÄala je minimalna snaga pojaÄala za datu kutiju. Niža glasnoća je 93-94 +/- 5 db na mestu sluÅ¡anja( to je koncertna glasnoća za kućne uslove i sve žanrove muzike). maksimalni zvuÄni pritisak kod kutije je cca 106 db u piku. Quote
Å¡ale Posted August 21, 2012 Author Report Posted August 21, 2012 Snaga u funkciji ambijenta sluÅ¡anja- osetljivost kutije u db (2,83 v) snaga pojaÄala sinusna w/snaga kutije sinusna w -za sobu 12 m2 85 db-40w/65w; 86 db-32w/50w; 87 db-25w/40w; 88 db-20w/40w; 89 db-16w/40w; 90 db-13w/40w; 91 db-10w/40w; 92 db-8w/40w; 93 db-6,3w/40w. - za sobu 18 m2 85 db-65w/100w; 86 db-50w/80w; 87 db-40w/63w; 88 db-32w/50w; 89 db-25w/40w; 90 db-20w/40w; 91 db-16w/40w; 92 db-13w/40w; 93 db-10w/40w. Savet: ako neko jako glasno sluÅ¡a muziku (hevi metal) uzeće efikasniju kutiju, npr. 88 db osetljivosti kutije uzeće 90-91 db kutiju. Quote
slavko Posted August 21, 2012 Report Posted August 21, 2012 efikasnost zvucnika i osetljivost istih nije isto. Loudspeaker efficiency is defined as the sound power output divided by the electrical power input. Most loudspeakers are inefficient transducers; only about 1% of the electrical energy sent by an amplifier to a typical home loudspeaker is converted to acoustic energy. The remainder is converted to heat, mostly in the voice coil and magnet assembly. The main reason for this is the difficulty of achieving proper impedance matching between the acoustic impedance of the drive unit and the air it radiates into. (At low frequencies, improving this match is the main purpose of speaker enclosure designs). The efficiency of loudspeaker drivers varies with frequency as well. For instance, the output of a woofer driver decreases as the input frequency decreases because of the increasingly poor match between air and the driver. ostetljivost: Driver ratings based on the SPL for a given input are called sensitivity ratings and are notionally similar to efficiency. Sensitivity is usually defined as so many decibels at 1 W electrical input, measured at 1 meter (except for headphones), often at a single frequency. The voltage used is often 2.83 VRMS, which is 1 watt into an 8 Ω (nominal) speaker impedance (approximately true for many speaker systems). Measurements taken with this reference are quoted as dB with 2.83 V @ 1 m. Quote
slavko Posted August 21, 2012 Report Posted August 21, 2012 The sound pressure output is measured at (or mathematically scaled to be equivalent to a measurement taken at) one meter from the loudspeaker and on-axis (directly in front of it), under the condition that the loudspeaker is radiating into an infinitely large space and mounted on an infinite baffle. Clearly then, sensitivity does not correlate precisely with efficiency, as it also depends on the directivity of the driver being tested and the acoustic environment in front of the actual loudspeaker. For example, a cheerleader's horn produces more sound output in the direction it is pointed by concentrating sound waves from the cheerleader in one direction, thus "focusing" them. The horn also improves impedance matching between the voice and the air, which produces more acoustic power for a given speaker power. In some cases, improved impedance matching (via careful enclosure design) lets the speaker produce more acoustic power. preuzeto sa Vikipedije. Quote
Å¡ale Posted August 21, 2012 Author Report Posted August 21, 2012 Snaga u funkciji ambijenta sluÅ¡anja- osetljivost kutije u db (2,83 v) snaga pojaÄala sinusna w/snaga kutije sinusna w -za sobu 12 m2 85 db-40w/65w; 86 db-32w/50w; 87 db-25w/40w; 88 db-20w/40w; 89 db-16w/40w; 90 db-13w/40w; 91 db-10w/40w; 92 db-8w/40w; 93 db-6,3w/40w. - za sobu 18 m2 85 db-65w/100w; 86 db-50w/80w; 87 db-40w/63w; 88 db-32w/50w; 89 db-25w/40w; 90 db-20w/40w; 91 db-16w/40w; 92 db-13w/40w; 93 db-10w/40w. Savet: ako neko jako glasno sluÅ¡a muziku (hevi metal) uzeće efikasniju kutiju, npr. umesto 88 db osetljivosti kutija i za nju date snage pojaÄala uzeti druge kutije osetljivosti cca 91 db (to je duplo glasnije kada se sluÅ¡a- 3 db). Quote
Å¡ale Posted August 21, 2012 Author Report Posted August 21, 2012 PogreÅ¡io sam, nije niža glasnoća 93 db, već je viÅ¡a glasnoća 97 db+2 db muziÄka snaga. Quote
Å¡ale Posted August 22, 2012 Author Report Posted August 22, 2012 kod jako glasnog sluÅ¡anja(101 db) uvećati snagu pojaÄala i kutija za cca 60% , NPR za osetljivost kutija 88 db i sobu 12 m2 sa 20/40w na 32/50w. za sobu 15m2 sa 25/40w na 40/70w. za sobu 18m2 sa 32/50w na 50/80w i za sobu 22m2 sa40/70w na 65/100w. Quote
Milos A Posted August 22, 2012 Report Posted August 22, 2012 Tako je, ali samo pod uslovom da pojaÄalo ima vati (w) po kanalu / m2 na sat. G = vrsta muzike, u1 = phono ulaz, u2 = aux, u3 = tuner. Quote
djape48 Posted August 22, 2012 Report Posted August 22, 2012 A gde je u toj formuli racunato koriscenje bass i treble potenciometra? Mozda neko koristi cak i balance Quote
Milos A Posted August 22, 2012 Report Posted August 22, 2012 A gde je u toj formuli racunato koriscenje bass i treble potenciometra? Mozda neko koristi cak i balance U pravu si, ovde je ubaÄena korekcija za tonske kontrole. Pažnja: vrednosti su taÄne za acid jazz i post-punk: za swamp rock (Kridensi, Dr. John i sliÄno) treba uneti koeficijent K=1.2: Quote
Å¡ale Posted August 23, 2012 Author Report Posted August 23, 2012 ako biramo pojaÄalo a nemamo kutije preporuÄujem da snaga pojaÄala bude:za sobu 12m2 20-35w;za sobu 15m2 25-40w;za sobu 18m2 35-50w:za sobu 22m2 40-65w;i(novo)za sobu 26m2 50-80w . Quote
Zexx Posted August 23, 2012 Report Posted August 23, 2012 ako biramo pojaÄalo a nemamo kutije preporuÄujem da snaga pojaÄala bude:za sobu 12m2 20-35w;za sobu 15m2 25-40w;za sobu 18m2 35-50w:za sobu 22m2 40-65w;i(novo)za sobu 26m2 50-80w . PriÄaj nam Å¡ta ti se joÅ¡ javlja, je i l'neÅ¡to ovako? Quote
Nikola_G Posted August 23, 2012 Report Posted August 23, 2012 Sunce ti, pa meni fali 15 kvadrata za sluÅ¡anje muzike... Moram pitati komÅ¡iju da li prodaje garniseru pored da to probijamo... InaÄe gore u onoj jednoj formuli fali jedan minus... Brothers in Arms 4ever! Quote
Froggy Posted August 23, 2012 Report Posted August 23, 2012 Brothers in Arms sucks! Suck on a brother's "arm"! Quote
Milos A Posted August 23, 2012 Report Posted August 23, 2012 Za Brothers in Arms pojaÄalo ne treba da ima viÅ¡e od 0w Quote
zarko1803 Posted August 23, 2012 Report Posted August 23, 2012 Nista ti ne valja ta tvoja racunica evo meni peva savim pristojno pojacalo od 2x1,7 w u sobi od 50m2, to malo sa 4 lampe Quote
Å¡ale Posted August 24, 2012 Author Report Posted August 24, 2012 Rezerva je samo 2 db i to je uzeto za Phono sekciju . Ako odreÄ‘ujemo pojaÄalo bez Phono sekcije onda uzeti NPR. osetljivost kutija 88 db i sobu 12m2 pojaÄalo 13w ; za sobu 15m2 16w za sobu 18m2 20w: za sobu 22m2 25w ;za sobu 26m2 32w .To je minimalistiÄki dizajn.PojaÄalo nema rezervu odnosno korekciju napona ulaza na potencijometru., Quote
Zexx Posted August 24, 2012 Report Posted August 24, 2012 Rezerva je samo 2 db i to je uzeto za Phono sekciju . Ako odreÄ‘ujemo pojaÄalo bez Phono sekcije onda uzeti NPR. osetljivost kutija 88 db i sobu 12m2 pojaÄalo 13w ; za sobu 15m2 16w za sobu 18m2 20w: za sobu 22m2 25w ;za sobu 26m2 32w .To je minimalistiÄki dizajn.PojaÄalo nema rezervu odnosno korekciju napona ulaza na potencijometru., BaÅ¡ je udarila ova vrućina... Quote
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