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

The thin layer of oil between the plies serves to suppress unwanted overtones and dampen the sustain. This results in a focused, 'fat' sound that is easier to control in various recording and live environments.

How does the 12" Evans Hydraulic Glass sound compared to standard heads?

It produces a deeper, punchier tone with a shorter decay. Standard heads typically have more ring and high-end sparkle, whereas the Hydraulic Glass focuses on low-end frequencies and a dry response.

Is the 12" Evans Hydraulic Glass difficult to tune?

No, it is specifically designed for effortless tuning. The dampening properties of the oil layer help to compensate for slight tension imbalances, making it ideal for drummers with little tuning experience.

What genres of music best suit this drum head?

While versatile, it is particularly well-suited for rock, funk, and R&B styles where a deep, dry, and 'fat' tom sound is desired. It is also excellent for vintage 70s-style studio recordings.

Can this 12" head be used on a snare drum?

Yes, if the snare drum is 12 inches in diameter, this head can be used to create a very dry, compressed snare sound. However, it is most commonly used on rack toms.

What is the difference between 'Glass' and other Hydraulic finishes?

The 'Glass' designation refers to the clear finish of the plies. Other variations, like the Hydraulic Blue or Black, offer different aesthetics but share the same internal oil-dampened construction.

Does this head require additional dampening like Moongel?

Generally, no. The internal oil layer provides sufficient dampening for most users, eliminating the need for external accessories to control overtones.

How durable is the Evans Hydraulic Glass 12" head?

The two-ply construction makes it quite durable and resistant to heavy playing. It is designed to withstand significant impact while maintaining its sonic characteristics over time.

Will this head help a 'troublesome' drum sound better?

Yes, it is specifically recommended for drums that are difficult to tune. The oil layer masks imperfections in the drum's shell or bearing edges by reducing the resonance that highlights those flaws.

What is the typical price for the 12" version?

In the UK market, the Evans Hydraulic Glass 12" drum head typically retails for approximately £26.00.

How does the sustain of this head compare to the Evans MS3?

The Hydraulic Glass has a very short sustain designed for kit toms, whereas the MS3 is a marching snare-side head designed for high-tension sensitivity. They serve entirely different musical purposes.

Is the oil visible inside the drum head?

Because the head is 'Glass' (clear), you can sometimes see the thin film of oil between the plies, which may create a slight rainbow effect or 'Newton's rings' under certain lighting.

Gear article

Evans Hydraulic Glass Drum Head 12"

The Evans Hydraulic Glass Drum Head is a specialized two-ply drum head designed for 12-inch drums, featuring a thin layer of oil between the plies to dampen overtones. It is recognised for producing a deep, 'fat' sound with a significantly shortened sustain and is noted for its ease of tuning.

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Overview

The Evans Hydraulic Glass Drum Head 12" is a component within the broader Evans Hydraulic series, a product line distinguished by its unique construction method. Unlike standard two-ply heads, Hydraulic models incorporate a thin film of oil between the plies. This design is specifically engineered to suppress unwanted overtones and provide a controlled, consistent sound across the drum's surface.

Technical Features and Design

The primary mechanical feature of the Hydraulic Glass head is the internal oil layer. This 'wet' design acts as a natural muffler, physically restricting the vibration of the plies to eliminate excessive ringing. This results in a drum head that is famously easy to tune, as the dampening properties mask many of the inconsistencies that typically arise from uneven tensioning at the lugs. The 12" diameter makes it suitable for standard rack toms or specialized snare drums.

Sound Character

The sonic profile of the Evans Hydraulic Glass is characterized by a 'fat' and deep fundamental tone. It produces a punchy attack with a very short sustain, effectively emulating the classic studio sounds of the 1970s. Because the oil layer absorbs high-frequency overtones, the output is focused and warm, making it an effective choice for drummers seeking a dry, 'thuddy' response without the need for external dampening tools like gels or tape.

Target Audience

This drum head is particularly suited for two types of users: those seeking a specific vintage or dampened sound, and those who find drum tuning difficult. Because it remains stable under various tensions, it is often recommended for 'troublesome' drums that are difficult to resonance-match. It is equally effective for beginners who have not yet mastered the nuances of fine-tuning, as it produces a usable sound even with minimal adjustment.

Comparison to Alternatives

Compared to standard single-ply or non-oiled two-ply heads, the Hydraulic Glass offers significantly less resonance and a darker tone. While a standard clear head might provide more brightness and 'singing' sustain, the Hydraulic is designed for control. Within the Evans range, it differs from the MS3 Clear Marching Snare Side head, which is designed for high-tension marching applications, whereas the Hydraulic is intended for traditional kit use. It also provides a more immediate dampening effect than using accessories like the Tama CB900PS Accu-Strike beater for kick control.

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Frequently asked questions

What is the primary benefit of the oil layer in Evans Hydraulic heads?: The thin layer of oil between the plies serves to suppress unwanted overtones and dampen the sustain. This results in a focused, 'fat' sound that is easier to control in various recording and live environments.
How does the 12" Evans Hydraulic Glass sound compared to standard heads?: It produces a deeper, punchier tone with a shorter decay. Standard heads typically have more ring and high-end sparkle, whereas the Hydraulic Glass focuses on low-end frequencies and a dry response.
Is the 12" Evans Hydraulic Glass difficult to tune?: No, it is specifically designed for effortless tuning. The dampening properties of the oil layer help to compensate for slight tension imbalances, making it ideal for drummers with little tuning experience.
What genres of music best suit this drum head?: While versatile, it is particularly well-suited for rock, funk, and R&B styles where a deep, dry, and 'fat' tom sound is desired. It is also excellent for vintage 70s-style studio recordings.
Can this 12" head be used on a snare drum?: Yes, if the snare drum is 12 inches in diameter, this head can be used to create a very dry, compressed snare sound. However, it is most commonly used on rack toms.
What is the difference between 'Glass' and other Hydraulic finishes?: The 'Glass' designation refers to the clear finish of the plies. Other variations, like the Hydraulic Blue or Black, offer different aesthetics but share the same internal oil-dampened construction.
Does this head require additional dampening like Moongel?: Generally, no. The internal oil layer provides sufficient dampening for most users, eliminating the need for external accessories to control overtones.
How durable is the Evans Hydraulic Glass 12" head?: The two-ply construction makes it quite durable and resistant to heavy playing. It is designed to withstand significant impact while maintaining its sonic characteristics over time.
Will this head help a 'troublesome' drum sound better?: Yes, it is specifically recommended for drums that are difficult to tune. The oil layer masks imperfections in the drum's shell or bearing edges by reducing the resonance that highlights those flaws.
What is the typical price for the 12" version?: In the UK market, the Evans Hydraulic Glass 12" drum head typically retails for approximately £26.00.
How does the sustain of this head compare to the Evans MS3?: The Hydraulic Glass has a very short sustain designed for kit toms, whereas the MS3 is a marching snare-side head designed for high-tension sensitivity. They serve entirely different musical purposes.
Is the oil visible inside the drum head?: Because the head is 'Glass' (clear), you can sometimes see the thin film of oil between the plies, which may create a slight rainbow effect or 'Newton's rings' under certain lighting.