Home Speaker Asylum

General speaker questions for audio and home theater.

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ Speaker Asylum ]
[ Alert Moderator ]

RE: Can a simple crossover (cap/inductor) achieve time alignment without a stepped baffle?

First, you do need to align acoustic centers. This is done with sloped baffles, stepped baffles or delays if the crossover is digital (DSP).

Second, the simple "1st order electric" crossover you've described - this is a common misconception. The crossover needed for a true 1st order ACOUSTIC response is not going to be the same crossover for a simple 1st order ELECTRICAL transfer function (cap and coil). This is because with shallow 1st order slopes, drivers have natural frequency and phase variations that occur well past the intended crossover points. (In other words, the acoustic response - amplitude and phase - of a given driver is in play at least 2 octaves beyond the crossover point).

If you look at the crossover of a true 1st order acoustic design it will be far more complex than a single cap and single inductor. This is because amplitude and impedance equalization circuits are required to get the drivers acoustically "flat" enough to meet the 1st order acoustic response.

This means the designer needs drivers with specialized characteristics that suit a 1st order acoustic design. A big one, for example, is power handling of the tweeter in such a design.

Cheers,
Presto

This post is made possible by the generous support of people like you and our sponsors:
  K&K Audio / Lundahl Transformers   [ K&K Audio / Lundahl Transformers Forum ]

Follow Ups Full Thread
Follow Ups
FAQ

Post a Message!

 Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Subject:
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]