1. Sign-up to become a member, and most of the ads you see will disappear. It only takes 30 seconds to sign up, so join the discussion today!
    Dismiss Notice

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

    Joined:
    Jun 30, 1997
    Messages:
    52
    Likes Received:
    0
    Trophy Points:
    0
    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

    Joined:
    Oct 4, 2002
    Messages:
    45
    Likes Received:
    0
    Trophy Points:
    0
  3. Brian Knauss

    Brian Knauss Stunt Coordinator

    Joined:
    Jan 12, 2003
    Messages:
    61
    Likes Received:
    0
    Trophy Points:
    0
    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

    Joined:
    Jun 30, 1997
    Messages:
    52
    Likes Received:
    0
    Trophy Points:
    0
    Thanks for the info!

    Phil
     
  5. Aaron_Smith

    Aaron_Smith Stunt Coordinator

    Joined:
    Jul 22, 2002
    Messages:
    105
    Likes Received:
    0
    Trophy Points:
    0
    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

    Joined:
    Jul 2, 2001
    Messages:
    568
    Likes Received:
    0
    Trophy Points:
    0
    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

    Joined:
    Oct 4, 2002
    Messages:
    45
    Likes Received:
    0
    Trophy Points:
    0
    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
     

Share This Page