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Thread: Dayton Audio DSP408

  1. #1
    Junior Member
    Join Date
    Apr 2010
    St. Louis

    Dayton Audio DSP408

    Need help to set up 4-way Dayton Audio DSP408: Woofer : Jbl 2245hMid-bass: Jbl 2123hMid: JBl 2441/H93High: Jbl 2405Currently setting 2245: 20hz-60hz2123: 80-5002241: 500-80002405: 8000-20k. Donít have any JBl crossover Thank you

  2. #2
    Administrator Robh3606's Avatar
    Join Date
    Apr 2003

    I have a suggestion on your crossover points. I would adjust them to be similar to what JBL would use for that driver set. You don't mention box sizes and enclosure types for the drivers.

    I will assume you have the 2245 in about 8 cubit ft or so in a reflex tuned box say 30Hz or lower. The 2123 would be in a .5 cubic ft sealed sub-enclosure medium fill.

    That said crossover set to the 2123 approximately 300 Hz to about 1.5k and then crossover at about 10K

    The 2123 can do lower in a separate reflex box but the 10" drivers in the large format monitors were always in sealed sub-enclosures crossed around upper 200-s to lower 300's

    You can try the slopes and crossover frequencies referenced in the attached speaker spec sheets as a starting point when you set up your DSP.

    The 2123 can have a rising frequency response so you may have adjust with a low Q notch PEQ in the upper range of the driver. I use 2123's from 300 to 1.5K no notch so see what works for you.


    Here is the 4355 as an additional reference
    "I could be arguing in my spare time"

  3. #3
    Senior Member
    Join Date
    Apr 2003
    A JBL 4345 tip from Ian Mackenzie 4343 4344 4345

    Set up your 4345 active bi amp crossovers as follows:

    Woofer to midrange Linkwitz 2nd order low and high pass @300 hertz with reverse electrical phase on the 2123H

    This will sum the acoustic response flat. The crossover point of each driver is -6 db with perfect transient response due to the low Q of the filter. The subjectivity of the translation is perfect.


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