Going active (using Hypex plate amp FA253)

[Holmz]

There are a few posts on the topic… However I’ll ask it again for a specific amplifier/DSP and a generic speaker.

What is the preferred method for going active with some existing speaker(s), for example a generic/theorhetical 3-way?

My thoughts are:

• Use a Hypex Plate amp like the FA253
  • https://www.hypex.nl/product/fusionamp-fa253/157
    • Which is 250w/250w and 100w for the Woofer/midrange/tweeter respectively.
  • Select cross over points and slopes and implement them in the Hypex
  • Use REW for frequency smoothing, as there are 15 bi-quads per Hypex Core.
• If one was to hook this up to something like a Lyngdorf with room correction, then would/should I get the system flattened in Hypex? Or just use the Lyngdorf?
  • Skipping the leveling in the Hypex?
  • Or level in the Hypex, and also do any ALLPASS or phase correction work in the Hypex
  • My impression is that Lyngdorf’s Room Perfect does frequency leveling with IIRs, And not a FIR based approach like Dirac (DRC).

Thoughts are appreciated.

 

[jhaider]

Unfortunately, the preferred method is:

• Take them outside on a windless day (assuming you don't have access to an anechoic chamber or Klippel NFS).
• Take measurements of each drive units in the cabinet, at least 180deg horizontal in 5-10deg intervals, and ±30deg vertical in the same intervals
• Depending on the size/complexity of the bass alignment, you will want to supplement with nearfield measurements or ground plane measurements and work out the splice
• Import your measurements into a simulator (VituixCAD is very good; Boxsim is another I've heard good things about but have never used)
• Design your filters
• Import your filters
• Listen
• Repeat the last three steps until you're happy or you give up