OntZ Posted May 31, 2008 Share Posted May 31, 2008 am si eu o intrebare, pt care nu am reusit sa gasesc raspuns niciunde..... de ce se fac intrari hi si lo la unele amplificatoare? care sunt diferentele intre cele doua intrari si la ce se refera hi si lo, impedanta sau ce? hi are gain mic si low are gain mare? habar n-am Link to comment Share on other sites More sharing options...
Dicu Posted May 31, 2008 Share Posted May 31, 2008 hi input - pt dozele cu output mare low input - pt dozele cu output mic Link to comment Share on other sites More sharing options...
Guest ozzybui Posted May 31, 2008 Share Posted May 31, 2008 asa cum am vazut la schema de preamp la un JCM800 : high input are inca un stage de preamp (1/2 12AX7/ECC83), deci este mai sensibil, adica este invers cum a zis Dicu : hi input pentru doze cu output mic, si low input pentru doze cu output mare ? Link to comment Share on other sites More sharing options...
OntZ Posted May 31, 2008 Author Share Posted May 31, 2008 hi input - pt dozele cu output marelow input - pt dozele cu output mic si ce face? face semnalul cam la fel de "tare" pt ambele tipuri? Link to comment Share on other sites More sharing options...
Guest titus Posted May 31, 2008 Share Posted May 31, 2008 o explicatie de suprafata ar fi urmatoarea: in hi intra dozale cu semnal mic, in general cele pasive...dar exista si pasive cu output mare vezi x2n sau duncan distortion.. in low intra dozele active sau pasivele du genul celor amintite mai sus. exemplu: in ampliful meu intru cu ambele chitari (sd duncan distortion si dimebucker) pe low pt a obtine cat de cat un clean ("cat de cat" pt ca statia mea nu are clean adevarat, ci un crunch); pe hi obtin un distors slab; colegul meu de trupa are sd livewire si pe hi obtine distors in adevaratul sens al cuvantului iar pe low are un overdrive frumos. daca vrei mai multe detalii, gen schema lui, cere si o voi posta. Link to comment Share on other sites More sharing options...
OntZ Posted May 31, 2008 Author Share Posted May 31, 2008 (edited) deci practic in lo bagi daca vrei mai putin distors, si in hi pt mai mult (cu aceeasi chitara ma refer) edit: intrebare si mai stupida... daca bagi o chitara in hi si alta in lo in acelasi timp, ce se-ntampla? Edited May 31, 2008 by OntZ Link to comment Share on other sites More sharing options...
Guest ozzybui Posted May 31, 2008 Share Posted May 31, 2008 deci practic in lo bagi daca vrei mai putin distors, si in hi pt mai mult (cu aceeasi chitara ma refer) edit: intrebare si mai stupida... daca bagi o chitara in hi si alta in lo in acelasi timp, ce se-ntampla? 1. e clar ca in low vei avea mai putin gain, si in hi vei avea mai mult gain, cu aceeasi chitara 2. daca bagi 2 chitari in hi si low, cea care a fost bagat in hi nu se va aude. Am atasat o poza cu schema de preamp de la un JCM800, si o sa vezi : cand bagi 2 chitari, cele 2 "ring" (am notat cu cerc rosu) se va ridice, si semnal de la hi nu va merge in continuare. Link to comment Share on other sites More sharing options...
OntZ Posted May 31, 2008 Author Share Posted May 31, 2008 ahaaaaaaaaaaa Link to comment Share on other sites More sharing options...
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