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Designed and made in the USA

"Simplicity is the ultimate form of sophistication.”

-Leonardo Da Vinci

All Hiro speakers are compression horn driven above 2000 Khz.


Our compression horns convert large pressures to low pressures that are directed and amplified by the horn mouth. It does this through the

gradual, increase of the cone size

of the horn. The small diameter

area of the horn throat pressurizes

the sound which causes the horn to perform as if it is a much larger

driver. The horn then directs the

sound into a widening sound wave

that avoids nearby walls and focuses

the soundstage. The life-like dynamics and precise imaging of our horns 

outperform common tweeters or

ribbon drivers by a large margin. 

All Hiro and Super Hiro speakers are Dual Horn speakers


Our Hiro and Super Hiro loudspeakers are back-loaded horn designs. In a size-challenged loudspeaker, this is the most efficient way to produce deep bass from a smaller cabinet. The sound is channeled and radiated from the back of drivers through carefully engineered channels that expand at a mathematically determined ratio that will enhance bass. Low bass from 200 Hz down is directed from the rear of the main driver into a compression chamber that filters out the high frequencies. It then passes through gradually expanding channels and exits out the rear of the cabinet. The bass is amplified by up to 6 dB at the horn rear exit

reinforcing in phase with the bass wave from the

speakers front. Back loaded horn-type enclosures make the most efficient use of such back driver sound

rather than wasting it.

All Little Hiro, Super Little Hiro speakers and Hiro 6.5 are ported speakers


Our Little Hiro, Super Little Hiro, and Hiro 6.5 loudspeakers are bass reflex / ported designs. We chose this cabinet design approach because a back-loaded horn design is not very effective in smaller or very large speakers. Smaller speakers do not have the interior surface area to fold a horn of any real length, and larger speakers have a law of diminishing returns. They must become very large to enhance the bass frequencies of drivers larger than 6 inches. A ported, vented box or reflex port is a type of loudspeaker cabinet that uses a port (hole) cut into the cabinet and a section of tubing affixed to the port. This port enables the sound from the rear side of the main driver to increase the efficiency of the system at low bass frequencies as compared to a typical sealed- or closed-box loudspeaker. The port enhances the reproduction of the lowest frequencies 

generated by the back wave of the main driver by resonating and allowing a low pressure at the port tuning frequency. Depending on the exact relationship between the driver and the enclosure volume and the port tube cross-section and length, the efficiency can be substantially improved over the performance of a similarly sized sealed-box enclosure by up to 3 dB. Deeper bass that can go below the resonance of the main driver is a result

All our crossover are built to the same standards


Our Hiro loudspeakers are built using a minimalist crossover design. We employ a 3rd order network on the main driver and a 1st order network on the horn. This keeps the drivers in a relative phase. All crossover components are soldered point to point. This means that there is no circuit board with paper-thin traces to interfere with the current transfer. All internal wiring is Mil-Spec silver over copper with PTFE (Teflon) insulation. 

The Secret Sauce

All of our speakers can be tuned by you, using the supplied resistor packs. We measure and set them to a flat frequency response, at the factory, and they come shipped that way to you. Included in the package is an envelope of several various resistor values. They are used to tweak the upper midrange and treble response if you choose. This allows you to set up the high frequencies to accommodate your listening preferences for possible hearing loss or reflective/over-damped rooms.

Speakers in this price range rarely offer this valuable convenience tool.  


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