How good is the crossover in your loudspeakers?


 

I just watched a Danny Richie YouTube video from three weeks ago (linked below). Danny is the owner/designer of GR Research, a company that caters to the DIY loudspeaker community. He designs and sells kits that contain the drivers and crossover schematics to his loudspeakers, to hi-fi enthusiasts who are willing and able to build their own enclosures (though he also has a few cabinet makers who will do it for you if you are willing to pay them to do so).

Danny has also designed crossovers for loudspeaker companies who lack his crossover design knowledge. In addition, he offers a service to consumers who, while liking some aspects of the sound of their loudspeakers, find some degree of fault in those loudspeakers, faults Danny offers to try to eliminate. Send Danny one of your loudspeakers, and he will free of charge do a complete evaluation of it's design. If his evaluation reveals design faults (almost always crossover related) he is able to cure, he offers a crossover upgrade kit as a product.

Some make the case that Danny will of course find fault in the designs of others, in an attempt to sell you one of his loudspeaker kits. A reasonable accusation, were it not for the fact that---for instance---in this particular video (an examination of an Eggleston model) Danny makes Eggleston an offer to drop into the company headquarters and help them correct the glaring faults he found in the crossover design of the Eggleston loudspeaker a customer sent him.

Even if you are skeptical---ESPECIALLY if you are---why not give the video a viewing? Like the loudspeaker evaluation, it's free.

 

 

https://youtu.be/1wF-DEEXv64?si=tmd6JI3DFBq8GAjK&t=1

 

And for owners of other loudspeakers, there are a number of other GR Research videos in which other models are evaluated. 

 

 

bdp24

@texbychoice wrote:

Wins in what specific technical and measurable ways?  Trade offs must be honestly identified and considered.  That is the only damn fact that matters.

Now suddenly measurements are a convenient step (i.e.: "Measurements do not tell the entire story")? Apart from perceived listening impressions (they still count, don’t they?), you have a purer ohm load when an amp channel (a dedicated one, no less) is looking directly into a driver’s terminals, avoiding the likelihood of large impedance swings and steep phase angles through a passive crossover and hereby providing for much better working conditions for an amplifier, with better driver control and lower distortion to follow. 

Buy two more similar amps for 3 way setup, eh?  So say I have a quality 100 Watt amp, so buy two more that would add several hundred dollars of cost.  That is a hypothetical that makes no sense to support the case for all active.  Conflating potential reliability facts with trouble sleeping is an illogical comparison.

There’s no "case for all active" to universally go by. Why would you impose specific terms for active to make sense, other than the potential for better sound quality or to whomever it applies? That’s on you, pal. 

The case for active, from my chair, is sound quality via outboard active configuration and high efficiency speakers where size, by and large, isn’t an issue. Whatever it takes, it takes. For others it may be convenience, simplicity (yes, you heard me right), small size, and even an overall lower price with a bundled, preassembled and -designed package.

The good thing about active is that of being able to make more efficient use of a given amplifiers performance envelope, and thus you can save money per unit and keep yourself from buying overbuilt, hugely expensive amps that would otherwise be needed with passively configured, heavy speaker loads. So, what may seem to be more expensive with the need for more amp channels actively to begin with, can turn out to be much less so than expected or even save you money eventually. 

The sleep remark was hardly to be taken in the literal sense, but merely a play on words to address your claimed issue with reliability.  

The more complexity is added, the more the entire system is at the mercy of the weakest link.  Cheap out on any item and the entire system does not achieve it’s potential.  

You’re making a problem where there needn’t be any. Added amp channels and a DSP in themselves don’t necessarily equate into introducing a weak link. Buying a cheaper, bundled active package on the other hand (not least subs with built-in plate amps) can be an issue where reliability goes, but as I pointed to earlier my advocacy is outboard active config., and this way any quality gear can be in the loop for a purchase decision, where reliability is no bigger issue than it is passively.

The core premise of active being cheaper, easier, better completely fails.  Pick any 2.  You can’t have all 3.

Says who? Why don’t you get your head around the fact that some, if not many of us actually pursue active from a sound quality measure first and foremost, without "cheaper and easier" being part of the primary incentive? 

Do your system as you see fit.  Personal preference extrapolated to claims based on broad generalization does not equate to a clear path for all to duplicate. 

Oh I do make my own system as I see fit. I hope you do too. We’re debating crossovers here, and I added my experience with a way to implement them to make their presence less of an issue in the signal path. Please note that amp to driver interfacing is but one part of many to be considered. I’m not implying it’s a ticket that in itself makes everything else magically fall into place, nor do I mean to impose my views on others. 

@phusis "Practically speaking the only trade-off with active is a higher electrical bill from the multitude of amps. "

active x-over could actually save power and deliver higher SQ than passive one, by enabling mixing D (low/sub) and A (mid/high) class amps in one system. mids/highs don’t need more than 10W in regular listening, thus low power class A amps should work. in addition, active x-overs improve mid/high driver damping factor, which is typically. killed by resistive inductors and actual resistors in passive x-over circuit. 

I don't know if timbre has been raised as an issue, my sole issue with active crossovers is they would necessarily alter timbre. I've chosen specific components and modified parts within some components in order to achieve a pleasing timbre.   I exclusively run SET amps and SET pre, no way do I want to introduce a SS active crossover to this.

So if I took a $5000 speaker and used the exact same design but used film capacitors instead of polypropylene capacitors, would I hear a difference in the sound? Same question but change the dollar amount spent on the parts.  Say the $500 crossover is replaced with a $5000 one.  Would I hear a difference? And lastly if I redesigned the crossover completely with different numbers and slopes.  Would I hear a difference?

The answer is the same to all three questions.

 

Maybe.