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RE: My view is entirely different ...

124.189.0.93

In Reply to: RE: Anyone out there posted by xaudiomanx on April 05, 2025 at 16:37:47

You said: 'I let my main speaker run full range (what it's designed for)'.

Whereas I would say ... if you use subs - then you get a better integration by rolling off the mains at a frequency that matches the subs' 'roll-on'.

This is due to several reasons:
1. distortion increases on any 'mains' at their extreme low end.
2. you reduce the load on the amp driving the mains, if you remove the need to deliver extreme LFs ... thus this amp can better service the rest of the frequ range.
3. and you minimise the frequ range where the woofers and subs overlap. (I use 48dB slopes for my woofer/sub XO.)

You also said 'my sub amp is on its own as far as volume is concerned'.

Whereas I would say the one volume control needs to control the volume of both mains and subs.

My miniDSP unit controls volume for all 6 of my power amp channels.

And re. 'the sensitivity of the main speaker and the woofers is different' - the miniDSP unit allows me to compensate for both:
* disparate driver sensitivities
* and different amplifier gains.

Of course, you need to use REW (or something equivalent) to get it sorted!

Follow Ups:

RE: My view is entirely different ... - hahax@verizon.net 19:28:30 04/13/25 (1)
I agree. Rolling off the bottom of the main speakers significantly reduces their driver excursion with an obvious increase in transparency and detail(when properly done). And yes I experienced it when I added large woofers below my stand mounts even with a passive crossover.

I understand why generic subs almost never have a high pass filter since the manufacturer doesn't know how to set it for multiple, unknown main speakers. But high end subs with digital crossovers could have software included to create a proper high pass.

If you ever hear it done correctly you'll never go back.
- RE: But high end subs with digital crossovers could have software included to create a proper high pass ... - andyr 20:38:14 04/13/25 (0)
  Agreed!
  But if you're using a digital device ... you should be able to use this to provide the HP filter on the 'mains'. I in fact disable my subs' LP filter and use the miniDSP unit to provide both HP & LP filters for the subs.
  And re. " If you ever hear it done correctly, you'll never go back ."
  Absoloootely! :-))
  
  Edits: 04/15/25
where did you get a - xaudiomanx 16:35:08 04/08/25 (5)
crossover with a 48db slope?
- RE: where did you get a - andyr 17:48:50 04/08/25 (4)
  48dB L-R is one of the available options in a miniDSP unit.
  - electronic crossover - Analog Bob 19:45:18 04/09/25 (3)
    I am using a Bryston 10B-LR Crossover after my line stage and before my amps.
    - RE: electronic crossover - Don Reid 05:28:35 04/10/25 (2)
      With my DEQX Pre 8 DSP I don't have to be concerned with primitive devices such as volume pots as I triamplify my DIY speakers.
      I dream of an America where a chicken can cross the road without having it's motives questioned.
      
      Edits: 04/10/25
      - RE: electronic crossover - Lew 14:09:28 04/11/25 (1)
        
        In Reply to: RE: electronic crossover posted by Don Reid on April 10, 2025 at 05:28:35
        
        Nice, but your audio is converted to digital and back again to analog in the process.
        
        RE: "but your audio is converted to digital and back again to analog in the process" ... - andyr 20:52:10 04/13/25 (0)
        
        In Reply to: RE: electronic crossover posted by Lew on April 11, 2025 at 14:09:28
        
        That only applies to vinyl ... all my other sources are already digital!! :-))
        Having used analogue XOs for 20 years ... I get significant benefit from the room correction facilities which the miniDSP unit delivers. This outweighs any so-called " degradation " I might have gotten from operating in the digital space.
        
        Edits: 04/16/25 04/16/25

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