The final volume to be achieved with an amplifier is dependent on other factors. A crucial factor is the efficiency of a speaker and the construction of housing. An increase in efficiency by 6 dB is achieved through a higher sound pressure level than the doubling of the power of jazz guitar amplifiers and can also significantly influence the change of frequency response dynamics, and tonal character. A speaker with 10 dB higher efficiency roughly doubles the perceived loudness.
The first early equipment were mostly of this type. The rear housing may be opened or closed and it has a decipherable effect on the sound characteristics of a speaker. Smaller combos are easier to handle than other variations. Larger appliances, such as the Fender Twin Reverb are heavier to carry, since all components have to be moved at the same time. The output power moves in the range of 5 to 100 watts. Combos with smaller output power can also be supplied from a battery to some extent.
It is possible to experience some crossover distortion, which does not occur when the amplifier operates in class A operation. In some variants, the full signal from a single power tube is reinforced. The AB mode is usually employed for larger capacities, while the A-operation requires fewer components.
This can be achieved for example with an EL84 5W output power, while the two EL84 in push-pull mode is typically capable of 15 W. Often several tubes are connected in parallel to increase the overall performance. Power of 100 W or more can be achieved for example with multiple EL34 parallel push-pull operations.
On the other hand, there are amplifiers that combine the sound characteristics of the A-operation by parallel connection of power tubes with higher performance. A disadvantage of the A operation is the constant, relatively high power consumption. Swapping the power tube changes sound behavior significantly. Often, the power tubes are not re-measured.
Variations in sound may also occur when tubes from different manufacturers are used. They produce different sound, even though their nominal data is identical. This is caused by technical tolerances. Another variation is the hybrid amplifier. Since the eighties, the variant is common in the pre-amp tubes. Hybrid amplifiers can unite transistor preamp and tube power amp.
This construction was popular in the seventies, when transistor output stages with the sturdiness of best tube amps were still difficult to achieve, but enabled greater flexibility in the input and tone control stages. However, tube amps are more expensive than transistor amplifiers with the same output because of required transformers.
The following rule is used - same power output, which means the tube sounds twice as loud as corresponding transistors. However, it is to be observed that the impression of volume describes loudness as subjective. It only increases logarithmically with output power and also depends on the frequency. A 100 watt amp is not twice as loud as a 50 watt amplifier.
The first early equipment were mostly of this type. The rear housing may be opened or closed and it has a decipherable effect on the sound characteristics of a speaker. Smaller combos are easier to handle than other variations. Larger appliances, such as the Fender Twin Reverb are heavier to carry, since all components have to be moved at the same time. The output power moves in the range of 5 to 100 watts. Combos with smaller output power can also be supplied from a battery to some extent.
It is possible to experience some crossover distortion, which does not occur when the amplifier operates in class A operation. In some variants, the full signal from a single power tube is reinforced. The AB mode is usually employed for larger capacities, while the A-operation requires fewer components.
This can be achieved for example with an EL84 5W output power, while the two EL84 in push-pull mode is typically capable of 15 W. Often several tubes are connected in parallel to increase the overall performance. Power of 100 W or more can be achieved for example with multiple EL34 parallel push-pull operations.
On the other hand, there are amplifiers that combine the sound characteristics of the A-operation by parallel connection of power tubes with higher performance. A disadvantage of the A operation is the constant, relatively high power consumption. Swapping the power tube changes sound behavior significantly. Often, the power tubes are not re-measured.
Variations in sound may also occur when tubes from different manufacturers are used. They produce different sound, even though their nominal data is identical. This is caused by technical tolerances. Another variation is the hybrid amplifier. Since the eighties, the variant is common in the pre-amp tubes. Hybrid amplifiers can unite transistor preamp and tube power amp.
This construction was popular in the seventies, when transistor output stages with the sturdiness of best tube amps were still difficult to achieve, but enabled greater flexibility in the input and tone control stages. However, tube amps are more expensive than transistor amplifiers with the same output because of required transformers.
The following rule is used - same power output, which means the tube sounds twice as loud as corresponding transistors. However, it is to be observed that the impression of volume describes loudness as subjective. It only increases logarithmically with output power and also depends on the frequency. A 100 watt amp is not twice as loud as a 50 watt amplifier.
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