Best DIP quad op amp for active crossovers?

Discussion in 'Archived Threads 2001-2004' started by Phil Olson, Mar 1, 2003.

  1. Phil Olson

    Phil Olson Stunt Coordinator

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    Hi all,

    I haven't been here for a while! Anyways, does anyone have a good suggestion for the best quad op amp to use for active crossovers? I was looking at the OPA4134 but they discontinued the dip and only have SMT now.

    I guess I could live with that but dips are much easier to breadboard and solder.

    TIA,
    Phil
     
  2. Paul Stiles

    Paul Stiles Agent

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  3. Brian Knauss

    Brian Knauss Stunt Coordinator

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    Go with something Burr Brown since TI has that wonderful "samples" program. I think you'll be able to get 8 of them in a sample order. Just make sure you don't accidently get a micro dip... not fun looking at areas that you need to solder that are about as big as a hair.
     
  4. Phil Olson

    Phil Olson Stunt Coordinator

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    Thanks for the info!

    Phil
     
  5. Aaron_Smith

    Aaron_Smith Stunt Coordinator

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    I tried several different dual op-amps in my CD player and headphone amp, and prefer the sound of the national semi LM6172- not sure if they make a quad in a dip. The Burr Browns are pretty nice though. I haven't had any problems using op-amp sockets so I could change them and compare, as long as they are high-quality sockets.
     
  6. Dave Milne

    Dave Milne Supporting Actor

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    Interesting thread. I haven't built any active filters for a few years but I'm thinking about a new subwoofer crossover with an LT. My early crossover projects use National LM833 duals. Later projects used Analog Devices AD797. These were very nice sounding single 8-pin DIPs. I'll have to look into the BurrBrown/TI devices mentioned above... are these 2134/4134 devices significantly better than AD797/AD811?
     
  7. Paul Stiles

    Paul Stiles Agent

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    The best sounding op-amps are single devices.

    The AD797 is great but high frequency stability can be difficult to optain.

    Other single op-amp that have a reputation for high quality sound are:

    AD843, AD825 (Analog Devices)

    The AD825 is available only in surface mount packaging.

    and

    OPA627 (Burr-Brown/Texas Instruments)

    Unless there were severe space and cost constraints, I would use single devices.

    Here is a link to more op-amp reviews:

    http://tangentsoft.net/audio/opamps.html

    Paul
     

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