HU or Amp Active Filters

[KOL 10+ year member]

My 9887 & 450/4 both have active x/over filters. Any advantages too using one over the other?

Also, my Boston Pro's have the tweet mounted like a coaxial too the mid. Would separate T/A for the mids & highs even be beneficial?

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[CaviHitts 10+ year member]

As far as the X-over, I use both. I set the amp for more of a fail safe. The headunit is what I use to fine tune. Easier to get to and adjust. This way if one of them fail, you have a back up.

 

[Upgrayedd 10+ year member]

As far as the X-over, I use both. I set the amp for more of a fail safe. The headunit is what I use to fine tune. Easier to get to and adjust. This way if one of them fail, you have a back up.

are you serious?

 

[DBFan 10+ year member]

lol

 

[TurdFergueson2 5,000+ posts]

Use the HU settings of the 9887 and call it a day.

 

[KOL 10+ year member]

Use the HU settings of the 9887 and call it a day.

Appreciate the reply, but is there a reason you suggest the HU filters? The reason I ask is because I would need to run another set of RCA's to do so.

 

[FJF 10+ year member]

My 9887 & 450/4 both have active x/over filters. Any advantages too using one over the other?

9887's filters are implemented in the digital domain.

Also, my Boston Pro's have the tweet mounted like a coaxial too the mid. Would separate T/A for the mids & highs even be beneficial?

Not really.

 

[KOL 10+ year member]

9887's filters are implemented in the digital domain.

Is there an audible difference in a 24dB/octave slope, be it digital or analog?

 

[KOL 10+ year member]

edit*double dipped

 

[audioholic 5,000+ posts]

Is there an audible difference in a 24dB/octave slope, be it digital or analog?

Running the xovers from the h/u will allow adjustment of them 'on the fly'. Running both does nnot work as a back up, they actually stack, altering your slope.

 

[KOL 10+ year member]

Running the xovers from the h/u will allow adjustment of them 'on the fly'. Running both does nnot work as a back up, they actually stack, altering your slope.

Did you quote the wrong post?

 

[KOL 10+ year member]

Is there an audible difference in a 24dB/octave slope, be it digital or analog?

anyone?

 

[Upgrayedd 10+ year member]

the digital of the alpine is already running through the processing. Using it will not add any more noise. The amps analog processing adds noise and has the ability to be bypassed. This is a MINIMAL amount of nose and likely wont be noticed. In the end it isnt a huge deal. i personally would use the head unit but it sounds like you are more trying to justify NOT using it, and if running an rca is that big of a deal to you then using filters in the amp will work.

 

[KOL 10+ year member]

i personally would use the head unit but it sounds like you are more trying to justify NOT using it, and if running an rca is that big of a deal to you then using filters in the amp will work.

You're right. I just don't want to put in the time & money (as minimal as it may be) for zero or no improvement.

 

[audioholic 5,000+ posts]

You're right. I just don't want to put in the time & money (as minimal as it may be) for zero or no improvement.

If you know exactly how you want to set your filters so as to set and forget them, using the amp's will work fine. But if you want to play with the adjustments to find the best settings, the h/u's filters will make that much easier since you can adjust them from the listening position.