Do No Harm ... well the least harm anyway


I want to insert a high pass filter between my preamp and amp (both Benchmark) so I can limit the frequencies going to my full range speakers (Ref 3A Nefes II) to over 100Hz with a 24 db/oct. slope. The 3 possible ways are passive, active, or digitally (A to D then D to A where this is done through software). I am seeking opinions on which method would be the least intrusive to the original signal (ie. best sounding). Thanks for any replies.

koestner

I can see why you'd want to use subwoofers with your speakers, but I'd still run the speakers full range and set the low pass on your subs really low, which is really what usually sounds best.

Hi - the response to your question re, "intrusive to the original signal" is to use a passive ("line-level") or active, analogue xover. The passive is the easiest implementation, all you need are the electronic characteristics of the source & the load and from there it is very easy to design the high-pass you want. Many free apps online will give you the standard LCR values for your LR 24.

Why not ask Benchmark themselves?

 

OTOH, as you suggest, you could leave it alone. That, and enjoying the music, would be my recommendation.

“My reasoning for wanting to do this is to limit cone movement of the 2 full range drivers”
@koestner,

Have you reached out to your speakers manufacturer? They may be able to guide you on running your speakers full range with recommended amplification. A mis-matched amplifier is never going to sound good even with HP/LP filters. 

@cleeds Wrote:

Why would you want to limit bass to a full range speaker system?

JBL explains why see here page three B460 Bass System and page four BX63 Frequency dividing Network.

Mike

@koestner Wrote:

. I'm just not sure if it's better to go down this path, or not.

Maybe this will help see here. 😎

Mike

Have you considered a parametric equalizer?The ability to fine tune frequencies might provide the results you're looking for.https://forum.audiogon.com/discussions/equalizer-in-a-hi-fi-system