Plumb Horn Legacy Speakers 730A/B + Stereo Tube Amplifier


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On SALE now through April 30th, 2020!



Specimen Hi Fi System: Plumb Horn Stereo Speakers 730 A/B with Specimen Stereo Tube Amplifier

This package offers a complete Specimen hi-fi stereo music system.  It is comprised of a Specimen Single-ended Stereo Hifi Tube Amplifier and a pair of Plumb horns speakers with Dark Red bell interior.

Specimen Plumb horns are a natural evolution of my evolving geometries. They are Column Solvers.

The Specimen Stereo Tube Amplifier amp circuit is derived from the classic single-ended designs that began in the 1930s.  Plug your CD player, turntable, wireless system, computer, cassette deck, or home or office theater system into this elegant circuit and enjoy beautiful listening pleasure.

Like all Specimen Products, these items are entirely unique and are hand made in Chicago, Illinois.

  • Stereo Hi - Fi Tube Amplifier

    Crimson Finish
    Tubes - Two 6SL7 tubes, two EL34 tubes, one GZ34 rectifier tube
    Controls - Two volume controls
    Inputs - Two RCA input jacks
    Power - 8 watts per channel
    Weight - 20 lbs.
    Dimensions - 16" deep x 11" wide x 8" high

  • Plumb Horn Speakers

    Crimson Finish

  • Dimensions

    - 65" tall overall
    - 9.5 " horn diameter
    - 9.5" cube base
    - 11.5" minimum shelf depth

  • Specifications

    - Driver: FE126 Fostex full range
    - Impedance: 8 ohms
    - Sensitivity: 93 dB
    - Frequency Response: 83Hz - 25kHz

  • Shipping

    Freight By Arrangement

Crimson Plumb Horn Speakers

Plumb Horn Speaker

Specimen Plumb horns are a natural evolution of my evolving geometries. It occurred to me while contemplating twining vines and creeping foliage, that there is an symbiotic interface between architectonic structure and organic growth patterns. This can be put to good use when a load bearing column cannot easily be eradicated from a new dream loft space. If you cannot beat the enemy, embrace reality and face the music. They are Column Solvers.

Considering this design as an evolution in the Plumb Horn speaker series featured in the Sonic Arboretum, and as a new generation of my Eremurus horn speaker – the tallest of the eight unique horn speaker prototypes produced for my show Aero Dynamisms at Packer Schopf Gallery, it seemed logical to have the horns integrate well with nature. The design of the Plumb creates a foliage-like effect. The Plumb horns work exceedingly well in any botanical setting. They almost look as if they have grown in place.

Design & Construction

All Specimen Horn speakers are entirely handmade at Specimen in Chicago, IL.

A full range driver is rear loaded with a horn shape to match the acoustic impedance of the air in the compression chamber with the air in the listening room.

There is no crossover distortion.

Specimen Plumb Horn speakers are made from recycled newsprint, dryer lint, and shellac, making them by far the most eco-friendly Specimens to date. Dryer lint is one of earth’s greatest squandered resources and we are now putting it to use. It has incredible strength from all the interlocking fibers. Each horn is unique and embodies a variety of markings that result from the construction and finishing process. This raw and organic finish lends a unique patina to each horn.

The bases are made of premium quality Baltic Birch plywood.

Compatibility and Placement

All Specimen Horn speakers can be paired with my hi-fi tube amplifiers for a beautiful sonic symbiosis. Or they can be paired with virtually any other system and achieve excellent results. They are also perfect for home/office theater use.

These speakers are designed to work well elevated as a typical bookshelf speaker, out in the open, or even placed on the ground to achieve a more spatially expansive installation, as in the Sonic Arboretum exhibitions. The sound of Specimen Horns has been described as “holographic” in that the sound seems to be coming from behind the enclosure.

Museum Legacy 

The Specimen Leiderhorns, Hornlings and the smaller Hornlets horn speakers were first created for the Sonic Arboretum, a collaborative project between Ian Schneller and composer/violinist Andrew Bird. The Sonic Arboretum installation had its debut at New York’s Guggenheim Museum in 2010 and in 2011 at the Museum of Contemporary Art Chicago. The installation included a collection of 76 different Specimen horn speakers and Specimen Custom Tube Amplifiers.  The Sonic Arboretum exhibited again at the International Contemporary Art Museum, ICA Boston in 2015, where the specially designed Specimen ICA Calla Horns System made its debut.