A lot of importance is given to the kind of wood an instrument is made of, to the type of amplifier, the preamps and the effect pedals. Sometimes, not so much importance is given to the use of a good speaker and a good cabinet, which are the last links of the chain in charge of producing the sound that we have been searching for with the instrument, the strings, the pickups, the preamps and the amplifier.

It is very important to choose the speaker according to the frequency we are going to work with wisely; to choose the power of the speaker according to the amplifier and the impedance.

Wood Guitar Amps and Bass Cabinets Esgleas

To obtain the maximum benefit and performance from an amplifier we need a cabinet which is specially crafted for that particular amplifier. How is it made? By talking to and listening to the person who is going to play with that box and in this way obtaining all the necessary information to be able to craft it.

Can a cabinet be used to play any kind of music? Yes, but an Esgleas cabinet is crafted following the parameters to obtain the maximum quality and performance from the speaker according to particular specifications.

Can we play rock with an archtop guitar? Yes we can. However, this kind of guitar has not been constructed to play this kind of music.

Can we play classic jazz with a fusion guitar with active humbuckers pickups and tremolo? Yes; but it is almost certain that we will not get the sound we are searching for.

Bass

Take the bass for example; we will need to know if it is a double bass, an acoustic bass or an electric bass. If it is an electric bass, we will then need to know if it is a 4, 5 or 6 string bass and how these strings have been tuned. Having the 5th string tuned in E or tuned in B will give very different results because the frequencies of the notes that we will obtain are very different.

It is also be helpful to know the style of music and the use that we will be given to the cabinet. In concerts, for instance, we will require very high power. They can be used in recording studios or for small gigs where the volume and the weight will play an important role. Also, playing at home with the maximum quality of sound is a possibility.

Guitar

The same thing with the guitar. The majority of guitars have 6 strings but jazz guitars with 7 strings are also very common. Another issue to take into account is the kind of string; using round wound strings or flat wound strings makes the sound more or less bright. The style is important too, since we can play producing more or fewer overtones.

Generally speaking guitar cabinets can be totally open at the back or sealed. In some cases it can be important to use the model of cabinet known as "bass-reflex". We can apply this type of construction to jazz or acoustic guitars when we want to give an extra definition to deep notes.

Woods

We use solid pieces of wood of 15mm width. The pieces come from boards treated with an optimal drying process to prevent malformations.
High-density wood is used in order to give hardness and rigidity to a cabinet that will produce a more natural sound with less dissonance. We need to understand that the wood itself will give colour to the sound, as happens with the instruments.
Wood is not a dead material. Over time, the sound will get better due to the increase in density and the percentage of crystallinity.

Here are some examples of the most used types of wood used for their physical and sonorous features and looks:

Sucupira. It can be found in the tropical areas of South America. It has similar characteristics to wengé. Sucupira has high density, endurance and hardness. Its fibres can be straight or intertwined. It has a very elegant look.

Bubinga. From central Africa. It is a very heavy wood normally used in the construction of electric basses because of its acoustic qualities.

Rosewood. It comes from intertropical or subtropical areas. It is widely used to make guitar and bass fretboards. It does not have a high resistance to compression but it does to clashes. It provides a very balanced sound in acute and medium notes.

Padouk or red wood. Original of western Africa; it is a very stable wood. Freshly cut is brown but after a couple of days, thanks to oxidation, it acquires a spectacular red-orange colour. It is sometimes used to construct instrument fretboards.

Doussié. From western and central Africa. It is a stable, hard and heavy wood. It has white to yellowish sapwood and reddish brown heartwood. Because of its resistance to external and chemical agents, this wood is often use in shipbuilding.

Wood Guitar Amps and Bass Cabinets Esgleas

Design

Esgleas cabinets are made with high density solid wood; this is one of the reasons why in some cases Esgleas cabinets can be a little bit heavier than the standard cabinets available on the market. On the other hand, the quality of the sound is improved.

All the joints are blind dovetail or through dovetail made in the wood. There's no structural anchorage with screws.

In cabinets with two speakers, an inside wall is built in order to separate the space of each speaker. This way, we break the interference between frequencies and at the same time we have a rigid and solid cabinet.

This inside wall, as well as the frontal part that supports the speaker, are fixed with anchorages inside the structure of the box. This way the cube and the internal parts become one unique set.

When constructing cabinets, achieving a high degree of rigidity is important. The membranes of the speaker move the air from the interior of the cabinet, compress it and create a high internal pressure.

In case a tweeter is needed, it will be placed in an independent wood cavity in order to isolate the sound wave rewound provoked by the woofer.

If we turn the box we will find even wood surfaces except for the inferior side where the silent blocks are located. These silent blocks are made from low-density recycled rubber in order to obtain good adherence and good vibration isolation.

Wood Bass Cabinets and Guitar Amps Esgleas

Wood Guitar Amps and Bass Cabinets Esgleas

Wood Bass Cabinets and Guitar Amps Esgleas

The speaker is protected by a cloth of natural wool with the embroidered brand.

For easy transportation, the box has two side handgrips made of wood in a cavity sealed from the inside. When we grab these ergonomically made handgrips we have the same feeling as when we grab the neck of an instrument.

Concept

The design of the cabinet is based on the character of the material it is made of: the wood and its grain in particular. The grain of the wood becomes the real protagonist.

The pure geometries that define the design give austerity and timelessness to the ESGLEAS brand.

At the same time, anchorages and assemblies are meticulously worked to define each and every one of the planes of the volume with its nuances as unique elements.

The handgrips are designed following ergonomic parameters to facilitate transportation, responding to the global design conception of the product.

Every additional element, such as jacks, amplifier connectors, are integrated in the ventilation holes so they are unnoticeable.

The speakers are visually protected by a wool cloth, which gives a new natural material to the design. Thanks to its colour it becomes another nuance that describes and distinguishes the product.

ESGLEAS brings natural and traditional materials in the world of music.

Wood Guitar Amps and Bass Cabinets Esgleas

Calculations

The enclosures are unique pieces, calculated according to the needs of each musician.
The volume of the cabinets and the hole for ventilation if needed, are calculated following the speaker manufacturer's specific parameters.

Wood Bass Cabinets and Guitar Amps Esgleas

Speakers

With the same speaker and depending on the type of construction of the cabinet: sealed box, open box, bass-reflex, big volume; or compact volume, we can obtain different values of sensitivity, resonance frequency, power and cone displacement.

The speakers we use are:

Bass

Speakers: Eminence or Celestion with ceramic or neodymium magnets.
Tweeters: Eminence, Celestion or Beyma. Compression engines with ceramic or neodymium magnets are used.
Crossover: Passive filters Eminence or Beyma up to 600w. Optional installation of disconnectors or frequency attenuators.

Guitar

Speakers: Eminence, Celestion, Jensen, Electrovoice or Weber with alnico o ceramic magnets.

In the case of constructing the head and the cabinet, measurements can be changed to match the two boxes; always respecting the calculated volume.

Ventilations

When constructing boxes for amplifier heads or power amplifiers; with valves, transistors or digital; it is very important to calculate the ventilation surface needed to guarantee the refrigeration of the system.

Some amplifiers or power amplifiers include fans; in this case an open free passage is made in the box.

Isolations

Another important aspect when constructing cabinets is the internal isolation. A speaker is made of two membranes that work with an opposing movement and move the internal air of the box. The moving of the air can provoke unwanted rebounds of the sound waves.

To prevent these rebounds and obtain the maximum absorption of the waves dissipated by the lower membrane, we line the internal walls of the box with a pyramidal insulation. The lining will be more or less dense, depending on the function and the power of the box.

The external volume of the box will increase due to the insulation, since the calculations are always made from the interior net volume. This is why some standard boxes available on the market, are less voluminous: They don't have internal insulation.

Varnishes

All the glues, dyes and varnishes used in the construction of an Esgleas cabinet are water based. They pass the most demanding environmental controls and their physical characteristics are comparable to polyurethane based.

Water based varnish is very hard and protects the wood from eventual scratches. The finish is always satin or matte which gives a natural look and touch to the wood.