Seneca 2way Speaker - 15" woofer

The return of the ampsandsound to horn-loaded speakers marks  pivot back to our roots. For more than 18 years, Justin of ampspandsound has been designing, refining and building horn-loaded speaker systems. The Seneca is an homage to the Jazz Kissa speakers and JBL monitors of yester year.  Given their 2way design, the Seneca balances, tone and intimacy. Aided by a huge 18" Elliptical horn and 15" woofer scale and deep bass notes float with ease. 

The Seneca is a partial horn-loaded 2-way loudspeaker system. Utilizing a direct radiating 15” woofer for low frequencies, and modern high-efficiency compression drivers mated to state-of-the-art horn which covers from 500hz to 18khz with ease. The combination of big horn, and small form loudspeakers offer the bass response, efficiency, dynamic capabilities, low distortion, and scale of much larger designs in a much smaller enclosure.

The Seneca was a design study in simplicity, but pairing ultra wide bandwidth drivers, big horns and smallish enclosures. Marrying the virtues of direct radiating bass with the largest horns possible yielded a small package speaker with the dynamics you would expect with a full scale, large formate 3way.

Its compact size makes it easier to install in most rooms and minimizes room interactions. Though bigger than a modern bookshelf, the Seneca is significantly smaller than any horn-loaded design and able to use commercial grade drivers.

The Seneca offers a delicate balance of scale, tonal accuracy, and rich detail in a design that will appeal to audiophiles who desire all of the positive attributes of horn-loaded designs but without the issues of size and room interaction that are inherent to many designs.

The loudspeaker features a sophisticated, hand-wired crossover network, which utilizes high-order filters, and large air-core inductors for low signal loss. If the heart of the Seneca is its horns and midrange, the crossover represents its cerebral cortex. ampsandsound spent countless hours on the crossover, to create a state-of-the-art design that minimizes frequency overlap, and achieves phase coherence and perfect time alignment. Our crossovers are hand-made and built to the same rigorous standards as our amplifiers and loudspeakers, utilizing Hyper-litz inductors and low Q capacitors.

Through countless iterations, one singular virtue of our crossovers has become clear; their ability to be adjustable makes system match not just possible but an expectation.

The Seneca's bass section utilizes a 15″ woofer in a direct-radiating configuration that is front-ported to minimize interaction with front walls. Through the use of FFT analysis, ampsandsound has carefully built an inert cabinet that features strategic bracing and dampening. As a result, the Seneca is capable of high output with minimal excursion and greatly reduced levels of distortion over conventional designs. In short, watch our woofer, and you'll be shocked at how little movement is observed. Remembering that cone travel can equate to distortion and non linear response.

The heart of the Seneca is its large CNC-cut midrange horn, which utilizes a hybrid tractrix flare, providing controlled horizontal dispersion and limiting vertical dispersion to reduce room interactions. The midrange horn is mated to a 2″ large-format midrange compression driver with a 3″ voice coil. The combination of a large, precision-made wood horn with a large throat and large midrange compression driver has resulted in a midrange that is tonally accurate, yet rich with detail. The midrange is smooth, fast-sounding, and easy to listen to for hours.


Cabinet: 21W" X 16D" 32H"

Weight: 100lbs/per cabinet

Quoted Frequency Response: 34Hz – 18Khz -3db, 98db

Sensitivity: 98db 1W/1m, 200 watts/maximum power handling