Results 1 to 2 of 2
  1. #1
    Forum Regular
    Join Date
    Jan 2004
    Posts
    5

    Optimus SW12 crossover

    I recently upgraded my fronts from some JBL N28s to Athena ASF2s and the 250hz crossover that the Optimus SW12 comes with just isn't working for me. Athena suggests 50 hz on their own subs with the ASF2s. I have an Adcom amp for my fronts so the sw12, which is passive, is running solo off of my receivers speaker wire outs. What options do I have for reducing the sub frequencies? I would rather not alter the sub directly so an outside in-line solution would work the best for me. I am willing to spend up to $100 on this.

  2. #2
    Forum Regular karl k's Avatar
    Join Date
    Feb 2002
    Location
    Wichita, Kansas, N America, Sector 001
    Posts
    256

    Unless your prepared to do some trial and error...

    your biggest hurdle is going to be quality. It's difficult to buy or build a passive x-over to match the characteristics of the driver unless some engineering spec's are known. It's a shot in the dark! You can try a prefab passive from an autosound dealer, or Parts Express has some that go down to 80Hz or so but again, you may not get optimum performance out of the sub. Another thought would be to invest in a plate or remote amp that has a built-in adjustable x-over but for $100, you will still have a quality issue. The amp doesn't have to be mounted on the sub, just a box about a foot square and 4"deep will do. Personally, I would do a dedicated amp for the sub as your mains and the sub will probably sound much better at elevated sound levels. With a dedicated amp, you can use a plug-in module inline between the Adcom pre-out and the sub amp in for about $25-$30 if the amp doesn't have an onboard x-over.

    If I think of anything else, I'll let you know.
    Karl K.

    The shortest distance between two points is a straight line... in the opposite direction.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. The best crossover is no crossover?
    By piece-it pete in forum General Audio
    Replies: 2
    Last Post: 12-26-2003, 08:19 AM
  2. where should the crossover be set
    By Willow in forum Speakers
    Replies: 22
    Last Post: 12-24-2003, 11:38 AM
  3. Look what i found!
    By PeteintheUk in forum How-To Articles
    Replies: 0
    Last Post: 12-17-2003, 03:02 AM
  4. Line-level 2 way crossover suggestions? Marchand?
    By piece-it pete in forum The Audio Lab, Tweaks, Mods, DIY
    Replies: 6
    Last Post: 11-26-2003, 08:30 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Latest AudioReview Articles

Hot Deals

Latest News

AudioReview on Facebook