Hi All,

I am looking for replacement coaxial door speakers for my '01 S2000. I have the Pioneer DEH-P80MP HU installed, the rest is stock (ie no sub etc). I have narrowed the choice to 2...

• Infinity Kappa 62.5i

• Pioneer TS-E1796

Now, the Infinitys are slightly more expensive & seem to be highly recommended by folks on these Forums. However, the frequency response of the Pioneers are much greater than the Infinitys. Surely this means that the Pioneers are a far superior speaker and the one that I should buy? How important is the 'width' of the frequency response?

I would welcome your comments,

Chris

 

From a design standpoint, I like the pioneers. IMO I think they'll take a bit more being in the door cavity.

 

You can't determine the superiority of a speaker simply by looking at a single spec. The pioneers may have a wider frequency range, but at what efficiency? If it's lower, do you mind trading some power for a wider range? How linear is each speaker within the range you will be driving it at? If one starts to srop off below/above a certain frequency, it may not matter if you intend to use a low/high-pass filter and remove those frequencies.

 

My friend had the Kappas in his Impreza, and he was very happy with them. I believe the model you are considering actually has an external crossover even though it is a coaxial speaker. This could even allow you to drive the woofer and tweeter using different amps. The Kappas also have an oversized woofer, slightly larger than the Pioneer. However, the Pioneer is a 3 way, and supposedly has a wider range. I'd go with the Kappas.

 

i have pioneer components and could not be happier.

also, frequency response means NOTHING without a dB range. Many higher end components like JBL list the frequency response as "20-20K Hz, -2dB" What that means is that the frequency band will be within 2 decibels from strongest to weakest. 2dB doesn't sound like much, but 2dB is almost double the volume.

Without the dB level, frequency response means nothing; as long as something makes ANY sound at 20Hz, one could claim that they have that much response.

 

Thanks all, I think I'll pick up some Kappas tomorrow (found a really good deal).

 

First, to answer your question jinjer, the wider the frequency response the better, under two conditions:
1. It's really true
2. As long as you don't go beyond the range of human hearing. Despite the marketing BS, having frequency response beyond our hearing does absolutely nothing. Nada. Zilch.

Also, generally speaking there is no real need for a 3-way versus a 2-way unless the woofer is larger than 8". It's done as a marketing tool (more must be better, right?)

The reasons for using multiple drivers are:
A. Your specific driver doesn't have the frequency response to cover the range you need.
B. The driver is large enough that dispersion is an issue.
C. Power handling requirements are too much for a single driver.
D. SPL requirements necessitate a large driver which causes dispersion problems.

Think about this:
High-end headphones frequently use a single driver and cover the audio spectrum much better than speakers - they have both a wider frequency range and less distortion. Now here's the question - which of the above (A,B,C,D) explains why?


Bingo! If it's 20-20k at +10dB, -20dB you might as well be listening to AM.

[QUOTE=steven975,Jan 26 2005, 02:39 PM]Many higher end components like JBL list the frequency response as "20-20K Hz, -2dB"

 

Man, do you do this for a living!?

Great advice though, my Kappa's should be hear on Monday.

I know I should search, but will the Kappas fit str8 into my '01 or will I need spacers & the like to do a proper job?

Cheers M.