What is the main benefit of the oil layer in Evans Hydraulic heads?

The thin layer of oil between the two plies acts as a natural dampener to suppress overtones. This results in a more focused sound and significantly reduces unwanted ringing.

Is the 15-inch Evans Hydraulic Glass head difficult to tune?

No, it is specifically designed for effortless tuning. It is often recommended for drummers with little tuning experience because it produces a quality sound with minimal adjustment.

What kind of sound does this drum head produce?

The head produces a fat, deep sound with a very short sustain. This makes the drum sound punchy and controlled rather than resonant and bright.

Is this head suitable for 'troublesome' drums?

Yes, the manufacturer specifically highlights it as ideal for troublesome drums. Its dampening properties help mask imperfections in the drum shell or bearing edges that might cause tuning issues.

How does the 'Glass' version differ from other Hydraulic heads?

The 'Glass' designation refers to the clear nature of the film used in the head. It offers the same oil-dampened sound as the rest of the series but with a transparent aesthetic.

What is the typical price for the 15-inch model?

The Evans Hydraulic Glass 15-inch drum head typically retails in the range of £30. Prices may vary slightly depending on the specific retailer.

Can this head be used for any genre of music?

Yes, it is designed to be ideal for a wide range of drumming styles and genres. It is especially popular in styles that require a dry, deep, and vintage-inspired drum tone.

How many plies does the Evans Hydraulic Glass head have?

The head features a two-ply construction. The oil layer is sandwiched between these two layers of film to provide its signature dampening effect.

Does the 15-inch Hydraulic Glass head require external dampening?

Generally, no. Because the oil layer already suppresses overtones and shortens sustain, most drummers find they do not need additional gels, tape, or rings.

What category of music gear does this product fall into?

It is categorised as 'Parts & spares' within the percussion department. It serves as a replacement or upgrade component for a standard 15-inch drum.

How does the sustain of this head compare to standard heads?

The sustain is significantly shorter than that of a standard single-ply or non-oil-filled double-ply head. This creates a 'dead' or 'dry' sound that is highly controlled.

Is Evans the only brand that makes these oil-filled heads?

Evans is the most well-known manufacturer of the Hydraulic series. While other brands make dampened heads, the specific 'Hydraulic' oil-between-plies design is a signature Evans feature.

Gear article

Evans Hydraulic Glass Drum Head 15"

The Evans Hydraulic Glass Drum Head is a 15-inch specialized drum head featuring two plies of film with a thin layer of oil trapped between them. This unique design is engineered to suppress overtones and provide a fat, deep sound with minimal sustain, making it particularly effective for difficult-to-tune drums.

See live prices

Overview

The Evans Hydraulic Glass 15-inch drum head is a distinctive component within the Evans percussion range, categorised under parts and spares. It is defined by its multi-ply construction which incorporates a thin film of oil between layers. This 'hydraulic' design is intended to physically dampen the vibrations of the head, resulting in a specific sonic profile and enhanced ease of use for the drummer.

Design and Functionality

The primary functional feature of the Hydraulic Glass head is the internal oil layer. This oil serves to suppress high-frequency overtones that can often cause 'ringing' in larger drums, such as 15-inch floor toms or large snares. By reducing these unwanted frequencies, the head improves overall sound quality and focuses the fundamental pitch of the drum. The 'Glass' designation refers to the clear finish of the film, providing a classic aesthetic while maintaining the dampening properties of the Hydraulic series.

Fender Jazzmaster Pickup Covers Aged White

Sonic Character

Users of the Evans Hydraulic Glass series can expect a 'fat' and deep tonal response. Because the oil layer significantly reduces the resonance of the plies, the sustain is notably short. This makes it an ideal choice for drummers seeking a controlled, punchy sound that does not require additional external dampening such as gels or tape. It is particularly effective in genres where a dry, vintage-style thud is preferred over a bright, ringing tone.

Ease of Tuning

One of the most significant advantages of this model is its reputation for effortless tuning. The dampening effect of the oil makes the head less sensitive to minor tension inconsistencies across the lugs. This makes it a preferred solution for:

Troublesome drums with bearing edge imperfections.
Drummers with limited experience in fine-tuning percussion instruments.
Situations requiring a quick setup with minimal adjustment.

Market Comparison

While Evans offers other specialised heads like the MS3 Clear Marching Snare head, the Hydraulic Glass remains unique for its oil-filled dampening. Compared to standard single-ply heads, the Hydraulic 15" offers significantly more durability and a much darker tone. It sits alongside other essential hardware maintenance items like the Tama Accu-Strike Beater or Gotoh bass bridges as a reliable upgrade for improving instrument performance.

Related gear

Frequently asked questions

What is the main benefit of the oil layer in Evans Hydraulic heads?: The thin layer of oil between the two plies acts as a natural dampener to suppress overtones. This results in a more focused sound and significantly reduces unwanted ringing.
Is the 15-inch Evans Hydraulic Glass head difficult to tune?: No, it is specifically designed for effortless tuning. It is often recommended for drummers with little tuning experience because it produces a quality sound with minimal adjustment.
What kind of sound does this drum head produce?: The head produces a fat, deep sound with a very short sustain. This makes the drum sound punchy and controlled rather than resonant and bright.
Is this head suitable for 'troublesome' drums?: Yes, the manufacturer specifically highlights it as ideal for troublesome drums. Its dampening properties help mask imperfections in the drum shell or bearing edges that might cause tuning issues.
How does the 'Glass' version differ from other Hydraulic heads?: The 'Glass' designation refers to the clear nature of the film used in the head. It offers the same oil-dampened sound as the rest of the series but with a transparent aesthetic.
What is the typical price for the 15-inch model?: The Evans Hydraulic Glass 15-inch drum head typically retails in the range of £30. Prices may vary slightly depending on the specific retailer.
Can this head be used for any genre of music?: Yes, it is designed to be ideal for a wide range of drumming styles and genres. It is especially popular in styles that require a dry, deep, and vintage-inspired drum tone.
How many plies does the Evans Hydraulic Glass head have?: The head features a two-ply construction. The oil layer is sandwiched between these two layers of film to provide its signature dampening effect.
Does the 15-inch Hydraulic Glass head require external dampening?: Generally, no. Because the oil layer already suppresses overtones and shortens sustain, most drummers find they do not need additional gels, tape, or rings.
What category of music gear does this product fall into?: It is categorised as 'Parts & spares' within the percussion department. It serves as a replacement or upgrade component for a standard 15-inch drum.
How does the sustain of this head compare to standard heads?: The sustain is significantly shorter than that of a standard single-ply or non-oil-filled double-ply head. This creates a 'dead' or 'dry' sound that is highly controlled.
Is Evans the only brand that makes these oil-filled heads?: Evans is the most well-known manufacturer of the Hydraulic series. While other brands make dampened heads, the specific 'Hydraulic' oil-between-plies design is a signature Evans feature.