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  1. Its an 8pin PDIP package sir. I dont have a pcb...

    Its an 8pin PDIP package sir.
    I dont have a pcb layout yet.
    Im gathering infos and ideas first cuz im really not sure if replacing is possible.
    And its a GO now.
    Ima design a pcb layout for rod...
  2. Thanks for the info sir.. But what i want to...

    Thanks for the info sir..
    But what i want to knmow is that the technical specs of dual opamp opa2134 and single opamp opa627. Internal characteritics, or functions.
    Will the two 627 behave like...
  3. I read a post at this site Philip Jackson's HiFi...

    I read a post at this site Philip Jackson's HiFi DIY Project - Second Preamplifier Page that he replaced the opa2134 with opa627 and some components like jfet xsistor and some caps and resistors. I...
  4. 2 single opamp opa627 to replace a 1 dual opamp opa 2134?

    Hi guys, is it possible to replace a single ''dual opamp opa2134" with two pcs of "single opamp opa627"?
    If yes, is there a mod needed? Can anyone give mea schem? Thank you so much!
  5. Replies
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    811

    Hum on hi gain/volume. Cause?

    Hi made a bass preamp by Elliot Sound.
    I am having problem eliminating the hum.
    Everytime I turn the volume control up, the hum gets louder.
    And when i increase the gain level, it produces a...
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    2,194

    Bass guitar compressor-sustain control

    hi, i made an orange squeezer comp by tonepad
    when i adjust the SUSTAIN knob to low or below 50% the volume also go down, as in zero output sound. its like the sustain knob has become a gain...
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    3
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    3,089

    Oh hey! I was able to eliminate the choking...

    Oh hey! I was able to eliminate the choking sound. I think the prob is the faulty opamp. I replaced the 4558 with tl072. And tadaan! choking eliminated!
    Now i got a clean sound, but i feel like...
  8. Replies
    3
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    3,089

    Im using a passive bass.. When i hit the string,...

    Im using a passive bass..
    When i hit the string, At the start of the note,it will choke and then it will sound again. Its like the OS is compressing the beginning sound of hi notes to a level where...
  9. Replies
    3
    Views
    3,089

    Choking sound. Orange Squeezer project

    Hi guys, i just finished building my orange squeezer by tonepad. Made some mods for bass as stated on the tonepad site. I get clean sound as long as i dont increase the volume of my bass guitar. But...
  10. Replies
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    1,123

    36466 Here are the caps, The maroon cap marking...

    36466
    Here are the caps,
    The maroon cap marking says 105, and this is the blue cap i was talking bout.... 3900....
    I connected these two caps in parallel. I thought, i'd get a 4.9uf.. :sad:
    And...
  11. Replies
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    1,123

    Replacement for 4.7uf polyster Capacitor.

    Hi guys, i am working on a bass preamp by ESP. And it requires one 4.7uf polyster cap.
    Now, I am having problem finding a 4.7uf polyster cap, i cant find it in our local electronic store.
    The ESP...
  12. I meant, would there be a difference in audio...

    I meant, would there be a difference in audio output/performance when i use one of these ICs?
  13. Thank you so much sir.. Here are some of the...

    Thank you so much sir..
    Here are some of the schematics..
    36284
    36285
    The opa is the preamp
    And the other one is the tone control..
  14. Which chip is better for preamp Ad8512, opa2134, or ne5532?

    Hi guys, i am working on a preamp project,
    Just wanna know which ic is better when it comes to audio/sound performance?
    Is there any superiority in terms of producing bass sounds?
    Ad8512,...
  15. Thank you sir. Uhm, one more question... Am i...

    Thank you sir.
    Uhm, one more question...
    Am i ryt if i connect the neg supply at pin no.4, and the positive at pin 8, then the ground? No more additional components connected to the PS pin of the...
  16. Cant find the power supply connection in bass preamp schematic

    Hi guys, recently im looking for a bass preamp schematic and this site Bass Guitar Amp 1 got my interest. But the problem is i cannot tell if the project uses dual voltage +, - and ground pwer supply...
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