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Listening

After getting the system unpacked and inspected, I mounted the C65鈥檚 in my listening rooms baffles and sat down to find out how it sounded. I have to admit, I came away fairly impressed at the EFX C65 systems overall pleasant tonal balance and timbre. Generally speaking, I鈥檝e never had very high expectations of moderately priced systems such as this, but the EFX C65鈥檚 surprised me. The high frequency output was good, if a tad on the polite side. I specifically listened for traces of sibilance or edginess in the metal dome tweeters, and found very little to gripe about. In fact if anything, I would have liked just a touch more output from the tweets, but that would be easy to do with a bit of carefully applied equalization.

I thought the midrange output of the system sounded natural and reasonably uncolored, female vocals such as Tracy Chapman and Norah Jones were reproduced with great clarity and a sense of space. Saxophone and trumpet 鈥渃ut鈥� nicely without becoming harsh or edgy, and background detail was clearly evident regardless of what I listened to. This is a good indication that someone paid attention to intermodulation distortion during the design phase, and the speakers were assembled with care.

As good as they are, the brutal realities of the laws of physics always apply, and with a cone diameter of just a bit more than 4.5 inches, you can鈥檛 expect the C65鈥檚 (or any other speaker of a similar size) to dish out a lot of bottom end. But, I found they were more than capable down to about 80Hz, which is where your subwoofer will take over anyway, so it鈥檚 not really an issue unless you don鈥檛 have a subwoofer in your system.

And if you wanna rock and roll, the EFX鈥檚 won鈥檛 let you down there either. I dug deep into my musical archives and pulled out Deep Purple鈥檚 classics 鈥淢ary Long鈥� and 鈥淪mooth Dancer鈥� sounded great, and the incredible detail in the bands performance wasn鈥檛 lost or difficult to hear.

(Side Note: Deep Purple was one of the pioneers of hard rock and metal music. The musicianship in the band is legendary, particularly in the MarkII lineup of 1960-1973. If you have never heard these pioneering songs of hard rock on a very good system, you should. Both songs mentioned above are from the less popular but excellent, 鈥淲ho Do We Think We Are鈥� album. Each of the band members provide a unique and astonishing performance, and the songs are fast paced and driving. To be able to pick out Ian Paice鈥檚 fantastic stickwork on 鈥淪mooth Dancer鈥� while Roger Glovers bass lines, Jon Lord鈥檚 Hammond B3, and the amazing Ritchie Blackmore鈥檚 guitar work all combine to deliver a fast paced, hard edged but rhythm and blues feel. Fantastic.)

And if you鈥檙e simply not a fan of hard rock, never fear, the C65鈥檚 sounded good with everything I threw at them, from classical to country, hip-hop and jazz. No matter what your favorite tunes are, the EFX C65鈥檚 will have you covered.

On the Bench

After my listening was completed, I brought the system to my acoustics test bench to have a look at the mechanical and electrical aspects of the system, and to measure the actual on-axis frequency response.

I always like it when what I think I hear correlates with my measured data, and that鈥檚 exactly what happened in this case. The response curve is quite flat, with a small dip right around 10kHz, which probably accounts for the 鈥減oliteness鈥� of the tweeters, but also contributes to the lack of sibilance and hard sounding highs.

The system has a nominal impedance of just over 4 ohms, and the midrange drivers resonant frequency measured about 70Hz, which is the lowest frequency you should use when setting the systems crossover point.

Conclusion

I鈥檓 fortunate to be able to make my living working with and listening to some of the best audio gear on the planet, so I sometimes find it difficult to get excited about a 200 dollar pair of car speakers. But in the case of the EFX C65鈥檚 I was actually quite impressed, especially given the actual size of the cones and the modest price. If you鈥檙e in the market for a new set of coaxes or components, have a listen to the C65鈥檚 at your local Scosche dealer and see if you don鈥檛 agree.