There are dozens of manufacturers of high quality worldwide speakers to keep in mind when you change yours, but each manufacturer has its own merits, in terms of timbre, from vintage to modern, immaculately sounds and it is worthwhile to try them all. Don’t give up and manages to find the perfect speaker for your sound.
There are some things to consider when you choose a speaker, the first thing is the power. The power rating of a speaker does not mean speaker to instantly destroy itself if used with a higher power amp – is there as a rough guide. There is nothing preventing you to put a 25-watt speaker in a 50 watt amp, or a speaker’s 50-watt 25 watt amp in. In fact, make that the powers of speakers and amps do not coincide can offer great results. As a general rule, the lower is the power of an easy speaker will be cause the natural distortion in speaker, where this already can not reproduce clearly or even clean an amp output. Instead the speakers with a rated power of more than three times the output of the amplifier will tend to keep a clearer voice to higher volumes. This will offer a punch and definition extra saturation that comes from the amplifier itself, or the gain of the pedal, rather than soften them.
Another consideration is the type of subwoofer you have. Do closed as a baffle Marshall 4 x 12? Or with a rear fully or partially open, as in the Fender I’ve used here or a Vox AC30? My ears closed rear baffles work well with high-powered speakers as the Celestions magnet ‘H’, or even the speakers made by Electro-Voice, classical high power speaker company. These closed back speakers control speakers by reducing the pressure of the air behind the speaker. This, in turn, softens the harsh treble and increases bass response – think of Jimi Hendrix, Paul Kossoff or the first Pete Townshend. Baffles and combos of open rear adapt to bass speakers powerful as the Alnico Blue and Celestion Golds, or the range of speakers, Jensen, made in the USA.
And now comes time to become familiar with the terminology to know what we are talking about.
Celestion magnets weights are normally called S, L, M and H, which means Superlight [light-welterweight], [light] Light, Medium [intermediate] and [Heavy]. Usually much heavier magnet wholesale is the supported power and so on, but again let your ears the final decision. The impedance of the speakers are also a consideration; the majority of Valve amplifiers have impedance selectors. The easiest is to replace them with ones similar. Three common impedances are 4, 8, and 16 ohms. These values denote the resistance of the speakers and, as any resistance, can be connected in such a way that they change the total impedance. The individual speakers are easy to connect: Connect simply negative with negative and positive with positive. It is in the speakers and amps with multiple speakers where things become a bit more interesting…
Series and parallel are common methods of wiring. Series means that you connect the positive output of the amplifier to the first speaker plus, then connect the negative of that speaker to the positive of the second speaker and then from the negative of that speaker to the negative speaker output. This sounds extremely complicated, but in practice it is very simple. Wiring in series doubles the impedance of a loudspeaker so that two 8 ohm speakers become a 16 ohm load.
Parallel means that you simply connect both speakers together: the positive of the amplifier will both speakers positives, and the negative of the amp goes to the negatives of both speakers. That wiring in parallel divided by half the total impedance of the speakers. So two 8 ohm speakers will be converted into a 4 ohm load. When we cableamos 4 x 12 speakers as the Marshalls, things become complicated and fun… Marshall traditionally connect his speakers in series/parallel! This means that two pairs of speakers are wired in series and then both pairs are wired together in parallel.
You now get the turn deciding which speaker is which you want to improve your sound.