ты обязан считаться с другими его членами

В электросчетчике соседа откручиваете(проще откусываете) ноль и присоеденяете его на соседнюю фазу

В электросчетчике соседа откручиваете(проще откусываете) ноль и присоеденяете его на соседнюю фазу. В результате сосед имеет в розетке 380 вольт вместо 220 и вы долго наслаждаетесь тишиной пока он чинит все электроприборы. С первого раза может не дойти, можно повторить.

Не нравиться шум, мешает спать днём - вату в уши и вперёд! И у всех нервы целы. Пока закон не нарушен - жаловаться не на что. Если уровень шума не превышает установленную орму - терпи.

У всех есть права и обязанности, не нравится - на необитаемый остров.

"В пределах своей квартиры делаю - что хочу". Да ради Бога! Только звук и вибрации тоже держите в своей квартире.

Громкий звук свыше определённых пределов действует на одних людей плохо, другие же от него тащатся. Приоритет - у первых.

вот если 380 вольт кто-то сделает я так накостыляю, что мало не покажется.(хотя техника и не погорит, только фильтр, может быть ИБП)

А чтобы спалить машину соседа - так нужно знать, кто тебе помог сохранить слух.

380 - сильная вещь против таких ублюдков

RMS power
To make it short, an RMS power value is directly related to perceivable energy (acoustical, heat, light - or what else applies).

"RMS" is really a rather meaningless figure, when measuring power. R.M.S. is useful for measuring the "power-producing equivalent" voltage. Thus 10 Volts RMS will produce the same power into a given impedance that 10 Volts DC would produce (onto a resistance) Any waveform of 10 V R.M.S.will produce the same power into that impedance. This is because it's the root of the mean of all the average squared voltages to which Norbert Hahn referred in the prior post. It is if little meaning to compute the mean of squares of all the power values in a wave.

RMS, when applied to power measurements, has come to mean "sine-wave power." A 100 Watt "RMS" amplifier can produce a 100 Watt sine-wave into its load. With music, the total actual power would be less. With a square-wave, it would be more.


DIN power
The DIN 45000 defines different methods to measure power, depending on the device under test. Well, this is what I remember from reading the DIN some 25 years ago.

For home applicances there are three different numbers for power: Continous power, Peak power and power bandwidth; the latter does not apply for speakers.

Power measurement of an amp requires that the amp is properly terminated by Ohmic resistances of nominal value both at input and output. The continous power is measured when the amp is supplied by its normal power supply. It must then be able to deliver the rated power at 1 kHz for at least 10 minutes while the maximum THD does not exceed 1 %. To measure the peak power the normal power supply is replaced by a regulated power supply and the time for delivering the power is reduced. Thus, higher values for peak power are obtained. You may skip measuring the peak power by simply multiplying the continuous power by 1.1.

The power bandwidth is defined as the bw for which 1/2 of the rated continous power can be obtained.

Actually, DIN 45 500, CNF 97-330, EIA RS-426 and the encompassing IEC 268-5 specify not pink noise, but pink noise filtered by a filter that provides sinificant attenuation in the low and high frequency region of the spectrum to more closely model the long-term spectral distribution of music. Pink noise itself does not accomplish this


PMPO (Peak Music Power)
So called "music power". This power figure tells the power which the amplifier can maximally supply in some conditions. PMPO rating gives the highest measuring value, but this info is quite useless, because there is no exact standard how PMPO power should be measured.

The reason for this power rating was to show the max capability of equippment for recreating strong musical tansients like kettle drums and the like. Similar thing (music power rating) was used in the sixties, and I think it assumed a square wave that swung the whole supply range of the output stage. This alone gives them a factor of two over a clean sine wave note. But the ugliest thing they did was to assume that the high power lasted such a short period of time that the power supply caps would hold the voltages steady without any drooping. In the real world, an under powered PS could be hidden by this ruse and the PMPO might be a factor of 10 or more higher than what could be sustained on a nice instrumental performance.

Forget what adverts say about peak power or other "power terms" because they are not standardized and anyway comparable between equipments. Just look for "RMS continuous Power" or other reliable power rating (like DIN power).


Speaker power ratings
The nominal power for speakers is defined quite differently: The continous power is measured by pink noise rather than a sinousoidal signal and it is applied for 24 hours. Bandwidth of the noise is as required/specified by the speaker. Thus the nominal power is applicable to both a single chassis/driver and complete box. And the THD is not the limiting factor: It is replaced by the term that the speaker should by no means be damaged. Rhe requirement is that the speaker meet the manufacturers performance sapecification after the power cycle.

The maximum power is defined for woofers and boxes only. It is measured by applying sinusoidal signals of 250 Hz and lower such that the speaker is neither damaged nor produces unwanted output.

The AES/ANSI spec provides for two power measurements: thermal power, as you describe above, and excursion limiting, which is determined by either the hard mechanical limits afforded by the suspension, or the difference between the length of the voice coil and the length of the magnetic gap.

Цитата:
Громкий звук свыше определённых пределов действует на одних людей плохо, другие же от него тащатся. Приоритет - у первых.
- именно по-этому первые музыку громко у себя и не включают, а вторые включают. И чей приоритет, решать санитарным нормам, а не одному или второму

Лично я никому ничего не обязан

В результате сосед имеет в розетке 380 вольт вместо 220

"у нас день рожденья" (прикиньте: "у нас"), "мы у себя дома", "у нас вся милиция знакомая" и т.п. Все бы ничего, но кто-то из них еще мне из балончика перцовкой в лицо брызнул

против таких ублюдков