What makes the Evans Hydraulic series unique?

The Evans Hydraulic series is unique because it features a thin layer of oil trapped between two plies of film. This design is specifically intended to dampen overtones and simplify the tuning process.

What kind of sound does the 20" Hydraulic Red produce?

It produces a fat, deep sound with a very short sustain. The oil layer removes the 'ring' associated with thinner heads, resulting in a punchy and dry tone.

Is the oil layer visible in the drum head?

Yes, because the head is transparent red, you can often see the 'oil slick' effect between the plies, which is a signature visual trait of the Hydraulic range.

Is this drum head difficult to tune?

No, it is specifically designed for effortless tuning. It is highly recommended for drummers with little tuning experience or for drums that are historically difficult to tune.

Does this head require additional muffling like a pillow?

While you can add more muffling, the internal oil layer often provides enough dampening to eliminate the need for external pillows or blankets inside the kick drum.

How durable is the 20" Evans Hydraulic Red?

It is highly durable due to its two-ply construction. The extra thickness and the oil layer help it withstand heavy playing styles better than single-ply alternatives.

Can I use this for genres other than rock?

Yes, while it is great for rock and metal, its controlled sound is useful in any genre where a short, punchy bass drum is desired, such as funk or pop.

What size drum does this head fit?

This specific model is designed for a 20-inch bass drum. Ensure your drum shell diameter matches this measurement before purchasing.

What is the typical price range for this model?

The Evans Hydraulic Red 20" drum head typically retails for approximately £50 in the UK market.

Does the red colour affect the sound compared to the blue or black versions?

No, the sound characteristics remain the same across the different Hydraulic colours. The red finish is primarily a cosmetic choice for the drummer.

Is this a batter head or a resonant head?

This is primarily designed as a batter head (the side you hit). Using a Hydraulic head as a resonant head is uncommon as it would significantly mute the drum's projection.

Does it come with a patch for the beater?

This specific product listing is for the head itself. While many drummers add a kick patch for extra longevity, it is not built into the basic Hydraulic Red design.

Gear article

Evans Hydraulic Red Drum Head 20"

The Evans Hydraulic Red Drum Head 20" is a dual-ply drumhead featuring a thin layer of oil between layers to suppress overtones and deliver a focused, deep tone. Designed for ease of tuning and durability, it is particularly effective for achieving a '70s-style fat sound with minimal sustain on kick drums.

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Overview

The Evans Hydraulic Red 20" drum head is a specialised percussion component designed for bass drums. It belongs to the celebrated Hydraulic series, which is unique in the industry for incorporating a thin film of oil between two plies of film. This specific 20-inch model is engineered to provide a classic 'fat' and 'thumpy' sound while offering a striking visual aesthetic with its transparent red finish.

Design and Functionality

The primary functional feature of the Hydraulic head is the oil layer trapped between its plies. This oil acts as a natural dampening agent, effectively suppressing high-frequency overtones and ring without the need for external muffling accessories like blankets or pillows. The two-ply construction also ensures significantly higher durability compared to single-ply heads, making it resistant to heavy hitters and frequent use.

Sound Character

The sonic profile of the Evans Hydraulic Red is defined by a deep, low-end punch and a very short sustain. Because the oil layer absorbs vibrations quickly, the drum produces a 'dry' sound that focuses on the fundamental pitch of the shell. It is particularly effective at tamming unwanted resonances in 'troublesome' drums that are otherwise difficult to tune or have inconsistent overtones.

Tuning and Accessibility

One of the most significant advantages of this drum head is its ease of tuning. Evans markets the Hydraulic series as being 'effortless' to tune, making it an ideal choice for drummers with limited tuning experience or those who need to achieve a consistent sound quickly in varied environments. It maintains its pitch well and is forgiving of slight variations in tension across the lugs.

Applications

While suitable for various genres, the Hydraulic Red is most at home in rock, metal, and fusion where a controlled, powerful bass drum sound is required. It is a popular choice for studio recording where engineers often prefer a pre-dampened kick sound to simplify the mixing process. Its 20-inch diameter makes it a standard fit for many intermediate and professional drum kits.

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Frequently asked questions

What makes the Evans Hydraulic series unique?: The Evans Hydraulic series is unique because it features a thin layer of oil trapped between two plies of film. This design is specifically intended to dampen overtones and simplify the tuning process.
What kind of sound does the 20" Hydraulic Red produce?: It produces a fat, deep sound with a very short sustain. The oil layer removes the 'ring' associated with thinner heads, resulting in a punchy and dry tone.
Is the oil layer visible in the drum head?: Yes, because the head is transparent red, you can often see the 'oil slick' effect between the plies, which is a signature visual trait of the Hydraulic range.
Is this drum head difficult to tune?: No, it is specifically designed for effortless tuning. It is highly recommended for drummers with little tuning experience or for drums that are historically difficult to tune.
Does this head require additional muffling like a pillow?: While you can add more muffling, the internal oil layer often provides enough dampening to eliminate the need for external pillows or blankets inside the kick drum.
How durable is the 20" Evans Hydraulic Red?: It is highly durable due to its two-ply construction. The extra thickness and the oil layer help it withstand heavy playing styles better than single-ply alternatives.
Can I use this for genres other than rock?: Yes, while it is great for rock and metal, its controlled sound is useful in any genre where a short, punchy bass drum is desired, such as funk or pop.
What size drum does this head fit?: This specific model is designed for a 20-inch bass drum. Ensure your drum shell diameter matches this measurement before purchasing.
What is the typical price range for this model?: The Evans Hydraulic Red 20" drum head typically retails for approximately £50 in the UK market.
Does the red colour affect the sound compared to the blue or black versions?: No, the sound characteristics remain the same across the different Hydraulic colours. The red finish is primarily a cosmetic choice for the drummer.
Is this a batter head or a resonant head?: This is primarily designed as a batter head (the side you hit). Using a Hydraulic head as a resonant head is uncommon as it would significantly mute the drum's projection.
Does it come with a patch for the beater?: This specific product listing is for the head itself. While many drummers add a kick patch for extra longevity, it is not built into the basic Hydraulic Red design.