The Evans BD18EMAD is an 18-inch Clear Bass Drum Head that is part of Evans' highly popular and versatile EMAD series. The EMAD (Externally Mounted Adjustable Damping) system is its signature feature, allowing drummers to easily control the drum's attack and sustain without having to remove the head or reach inside the drum.

Here's a detailed breakdown of its features:

Evans EMAD Series Overview

The EMAD series is designed to deliver a versatile and controlled bass drum sound, balancing punch, power, and low-end. It's a favorite among drummers across various genres due to its easy adjustability and consistent performance.

18-inch Diameter (BD18EMAD)

The "18" in the model number indicates that this is an 18-inch diameter drumhead. This size is commonly found on smaller bass drums, often used in jazz setups, bop kits, or for drummers who prefer a more compact and portable drum kit while still desiring a powerful bass drum sound.

Single-Ply, 10-mil Clear Film

The BD18EMAD is constructed from a single ply of 10-mil (0.25mm) film.

• Single-Ply: Provides an open, vibrant, and resonant sound. It allows for good sustain and sensitivity.

• 10-mil Thickness: This is a medium-heavy single-ply thickness, offering a good balance of durability and responsiveness. It provides a solid attack and projection.

• Clear Finish: A clear drumhead emphasizes the attack and fundamental pitch of the drum, producing a brighter, more open, and more resonant sound compared to coated heads.

EMAD (Externally Mounted Adjustable Damping) System

This is the core innovation of the EMAD series. It features an externally mounted plastic sleeve that holds two interchangeable foam damping rings of different widths.

• Easy Adjustment: Drummers can quickly switch between the rings (or use no ring at all) by simply removing the outer ring, without needing to take the head off the drum or place internal muffling.

• Customizable Sound:

  • Thinner Foam Ring: Provides subtle dampening, allowing for punch and focus without sacrificing too much resonance.

  • Wider Foam Ring: Maximizes the low-end and attack, offering more aggressive dampening for a drier, more controlled sound.

  • No Ring: Allows for maximum sustain and a more open sound, similar to a traditional clear single-ply head.

• Versatility: This system makes the EMAD incredibly versatile for different musical genres and recording/live situations, allowing drummers to fine-tune their bass drum sound on the fly.

Level 360 Technology

All modern Evans drumheads, including the EMAD series, feature Level 360 Technology. This innovative collar design ensures:

• Ease of Fit: The head seats properly and evenly on the drum's bearing edge.

• Ease of Tuning: Makes the head easier to tune to a wider range of pitches.

• Extended Pitch Range: Allows the drum to resonate more fully and provides a broader spectrum of playable tones.

• Optimum Sound Quality: Promotes consistent contact with the shell, leading to a better overall sound.

Sound Characteristics

The Evans BD18EMAD, with its clear finish and adjustable EMAD system, generally produces a bass drum sound that is:

• Punchy and Powerful: Strong attack with a solid low-end thump.

• Controlled Sustain: The EMAD rings effectively manage overtones and decay, allowing for a focused and articulate sound without excessive ringing.

• Versatile: Can be adjusted from a relatively open and resonant sound to a tighter, more muted "thud" depending on the chosen damping ring.

• Clear and Defined: The clear film emphasizes attack and clarity.

Intended Use

The BD18EMAD is a bass drum batter head (the head you strike). It is an excellent choice for:

• Rock and Metal: Provides the necessary punch and controlled low-end.

• Gospel: Can deliver powerful and articulate bass drum sounds.

• Studio Recording: The adjustable dampening is highly beneficial for achieving precise sounds in a recording environment.

• Live Performance: Offers strong projection and the ability to adapt to different acoustics or musical demands.

• All-around Versatility: A true "working drummer's choice" that performs well across virtually all music genres.

Key Features at a Glance:

• Brand: Evans

• Series: EMAD (Externally Mounted Adjustable Damping)

• Size: 18 inches

• Ply: Single-ply

• Thickness: 10 mil (0.25mm)

• Material: Plastic film (Mylar)

• Finish: Clear

• Dampening System: Externally Mounted Adjustable Damping (EMAD) with two interchangeable foam rings (thin and wide).

• Technology: Level 360 Technology

• Sound: Punchy, powerful, controlled sustain, defined attack, versatile.

• Application: Bass drum batter head

• Origin: Designed, engineered, and manufactured in the USA.