Crossoverless Speakers - Ultimate Solution ?


I have a pair of speakers which have NO crossover, except for a rather large Mundorf capacitor on the ribbon tweeter. The speaker up until last week contained a resister, but even that was removed by the manufacturer. Now the sound on this two-way horn loaded speaker with a custom made 8" woofer it really great. The speaker has a tremendous amount of detail, with NO hint of harshness what so ever.

The efficiency is around 96 dB with a minimum impedance of around 8 ohms (average is around 10 to 12 ohms).

In light of my current findings, is it possible for a conventional loudspeaker with crossovers, regardless of cost to have as much detail and air as what I'm finding.

I must say I've yet to hear a speaker retrieve as much detail without glare or the dreaded forward or treble emphasized tweeter tricking you into thinking there is more detail.

The down side to all this is obviously the lack of a good bottom end to help balance the speaker. A matching active sub-woofer would no doubt help in this regard.

Any thoughts ?
clipsal

Showing 1 response by trelja

Crossovers are easily both the most important, yet least understood are of loudspeaker design. In my opinion, this is the reason there are so few truly good sounding loudspeakers on the market.

My opinion of crossoverless loudspeakers (apart from drivers that are meant to be used as such - Lowther, AER, Fostex, etc.) is that there is a tremendous amount of energy and extension missing in the presentation. This experience comes from both DIY and commercially available designs. Normally, this implementation uses a capacitor on the tweeter leg - necessary to protect this driver.

The addition of an inductor on the woofer leg solves the problem in restoring the energy, power, and drive. From the perspective of my feeble mind, and in probably not giving it enough thought, it's counterintuitive. But, you can't argue with tangible results.

I will say that I agree with the designer's removal of the resistor in his crossover. Even the very BEST resistors really damage the sound, and those that are less than the best (which most of the best speakers use) are even far, far worse. Of course, you have to balance this decision with the fact that most tweeters are more sensitive than most woofers, but one can make it a point to pair two drivers of similar sensitivity (easier said than done).