Tweakers' Asylum

get rid of that 4558 as fast as you can

65.12.123.152

1973shovel

In Reply to: RE: Could you explain why posted by nightdoggy on July 02, 2007 at 07:56:02

I've got a couple of AD827's I took out of the JVC 1050 a few months ago which I replaced with OPA 2604's.

Think the 827 would work in place of the 4558 or should I wait and order another 2604?

Follow Ups:

RE: get rid of that 4558 as fast as you can - nightdoggy 02:29:03 07/03/07 (4)
I'm sure it will be fine. I don't know what purpose your 4558s serve. I have Luxman tuners that use them to drive signal strength LEDs.
- RE:I have Luxman tuners that use them to drive signal strength LEDs. - 1973shovel 03:11:51 07/03/07 (3)
  And you lef them in?!! Oh my gash! LOL!
  
  Below is a section from my original post on the function of the 4558 in my subwoofer amp. Looks (and sounds!) to me as if it's in the signal path.
  
  When Stereophile reviewed this amp in 1994, during the bench-testing phase they reported "amplifier's low-pass crossover functions, implemented using 4558 dual op-amp chips..",
  
  To tell you the truth, it's the other chip (the TL072) which I'd like to know the function of, now that I've played with it.
  
  Doggy, thanks for all your input!
  - Actually I ripped it out of both tuners! - nightdoggy 16:12:23 07/03/07 (2)
    And stomped up and down on them and then dropped the remnants down into the sewer in front of my house!
    Actually I stole a bunch of OP270EZ (ceramic dips-nice!) op amps from work and used those.
    The OP270 is a great op amp for dc applications like that and less than ideal for ac applications.
    It is a hundred times better than the RC4558.
    Yes, a hundred times exactly!
    Gotta go, my cat just ran by me with another mouse in her chops.
    doggy
    - RE: my cat just ran by me with another mouse in her chops - 1973shovel 04:38:03 07/04/07 (1)
      Did the mouse have a 4558 in his chops? That's some well trained cat you have there doggy!
      - She left the last corpse on my bed! - nightdoggy 09:28:39 07/04/07 (0)
        
        In Reply to: RE: my cat just ran by me with another mouse in her chops posted by 1973shovel on July 04, 2007 at 04:38:03
        
        Kinda gross but I guess she loves me!

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