Aluminum 6061 Anodized Electronic Enclosure Guitar Pedal Housing CNC Customized Service

I believe that friends who have used electric guitar speakers are already familiar with the Volume (volume) and Master (total volume) knobs on the speaker operation panel that control the volume of the sound, so now I will introduce the tone adjustment module of the front pole of the speaker to you. This type of module generally refers to EQ (Equalizer), which is what we often call "equalizer". Of course, there are also some guitar amps that do not have this kind of EQ adjustment function at all, such as the simple and exquisite Epiphones Valve Junior. There are also some very elegant but simple speakers that will be equipped with at least one Present adjustment button in addition to the volume knob. Turning the knob clockwise will make the tone thinner and brighter, and adjusting it counterclockwise will make the tone thicker and darker. Like the Reußenzehn Chicago Model No. 2, which never compromises on complex circuitry (it only has controls for volume, overdrive, presence and master volume).

So what if we want to make the tone of the guitar brighter but don't want the low frequency to be thrown off? At this point you need separate high and low frequency adjustment functions. Hence the Bass and Treble knobs. You'll find these two controls on most speakers.

With a two-band EQ system, we can at least independently adjust the treble and bass. Since there are only two frequency bands that can be adjusted, this EQ system does not fine-tune the tone. Because the wide sound field is only divided into two parts, many adjacent frequency bands are affected during the tuning process. It is of course impossible to use such an equalization system to adjust the tone accurately enough. In other words, the EQ system with this simple structure can still adjust the unvoiced sound, but it is obviously not enough for the distorted sound with high balance requirements. In this case, the control of the intermediate frequency is more important.

In practice, the adjustment of the frequency band in the mid-high range occupies a certain importance in the tone of the guitar. Under the condition that there are only two equalization modules, most of the time, by adjusting the high frequency, it can also have a certain influence on the timbre of the middle and high frequency bands. That is to say, increase the high frequency, and the mid-high frequency tone is also raised. The adjustment of the mid-low frequency tone can only be pulled by the adjustment of the low frequency. At this time, if the low frequency is increased, the mid-low frequency tone will also be raised. At this time, the sound from the speaker will become "soft" and lose its strength. And this change process is very nonlinear. That is, such an adjustment method is difficult to precisely control. In times of desperation, we can make up for the lack of EQ by adjusting Gain. At this time, increase some Gain (that is, let more signal pass through the EQ module), and reduce the low frequency and high frequency appropriately. As a result, the mids will sound a bit clearer. This process of raising the mid-frequency is somewhat similar to the funny scene in the army in a comedy movie: the officer shouts to the soldiers in the queue, "If you are willing to accept the punishment, get out of the queue!" As a result, most of the slick soldiers collectively took a step back and stayed still. The soldiers were "delisted".

Anodic oxidation

Anodic oxidation is the electrochemical oxidation of metals or alloys. Aluminum and its alloy in the corresponding electrolyte and specific process conditions, due to the action of impressed current, aluminum products (anode) on the formation of a layer of oxide film process. Anodizing, unless otherwise specified, usually means anodizing sulfuric acid.

In order to overcome the defects of aluminum alloy surface hardness, wear resistance and so on, expand the scope of application, prolong the service life, surface treatment technology has become an indispensable part of the use of aluminum alloy, and anodic oxidation technology is the most widely used and most successful.