Ok, nisam baš toliki stručnjak, ali ako neko ima nekih nedoumica na sennheiser-ovom sjatu sve lepo piše:
Frequency response
The frequency response of a microphone is given within the limits defined by the manufacturer. In studio condenser microphones it is generally within the range of between 20 Hz and 20 kHz.
Impedance
Impedance expresses the AC resistance of a microphone or a set of headphones. It is dependent on frequency and is given at 1 kHz as the so-called nominal impedance. Impedance is measured in ohms. In recent years, an industrial standard has developed, setting the impedance of headphones at 50 or 600 ohms. Sennheiser headphones are manufactured according to this standard, thus practically ruling out connection problems. With microphones, the input impedance of the following microphone amplifier should have at least three times the value of the nominal impedance, in order to prevent it from unnecessarily attenuating the microphone signal.
Sound pressure level (SPL)
Due to the impractical numerical values, the sound pressure is usually given as the logarithmic value of the sound pressure level according to the equation: dB SPL = 20 x log (po / 0.00002 Pa). The abbreviation SPL (sound pressure level) is added in order to make a clear distinction from other uses of dB. The reference sound pressure, which is at the same time the threshold of hearing, is then 0 dB SPL. The threshold of pain is 140 dB SPL. A difference in the sound pressure level of 1 dB is just about perceptible, while a doubling of the sound pressure corresponds to 6 dB and a doubling of the volume corresponds to a rise of 10 dB.
Jack plug
A common audio connector in consumer electronics and music industry. Available in various diameters; in the hi-fi segment, 1/8" and ¼" are widely used. Poles range from one to four. (Examples: headphone jack or jack of an electric guitar).
Ear coupling
A distinction is made between headphones which are worn on the external ear (supra-aural) and those which surround the ear (circumaural). Open headphones have foam ear pads that rest on the ears or ring pads that surround the ears. Closed headphones, on the other hand, nearly always have circumaural ear pads.
Transducer principle
Two transducer principles have become established for the conversion of electric energy into mechanical energy: electrodynamic and electrostatic transducers, whereby the latter is only to be found in audiophile systems, due to their relatively high manufacturing costs. Electrodynamic transducers basically consist of a ring-shaped permanent magnet and an oscillation coil, which is fixed to the receiver diaphragm. When an audio-frequency alternating current is passed through the oscillation coil, it is caused to vibrate in accordance with the audio-frequency alternating current, thus causing the diaphragm to vibrate in the same way.
Po specifikaciji za pojedine modele na sajtu, jako su male razlike u karakteristikama, a izuzetne u ceni. Konkretno moje MX-550 i (moj san) CX-300, se skoro uopšte ne razlikuju po karakteristikama (neznatno), a prve koštaju 28€, a druge oko 70. Jedino što ove druge ulaze U uvo, ali kao što sam već pomenuo, razlika u odnosu na neke druge dobre proizvođače je NEBO-ZEMLJA. Možda je i dizajn bitan!!!
E da, konkretna razlika: MX-500 (32Ω, i 119dB) i MX-550 (16Ω, i 113dB).
550 su noviji model, i verovatno i uz manju efikasnost, ali i sa manjim otporom daju bolji efekat. Starije 500 su 5€ skuplje. Ali što reče Miskoni, to je krajnje subjektivno.
