quote:

Orijinalden alıntı: SertaçS

Fiyat düşük olunca dikkatimi çekti, şu anda sistemde standart güç kabloları var. Bu modeli kullanan varmı ?

http://www.ttafshop.com/Power-Kablo-Basic-Line-Serisi-18-mt,PR-5907.html


< Resime gitmek için tıklayın >

quote:

The total number of correct answers was 73 out of 149, which amounts to 49% accuracy. That is no more accurate than flipping a coin, and therefore, no statistically significant detection of power cable differences.

Test participants were asked to rate themselves as to how much of an audiophile they considered themselves to be. The scale was 1 to 5 where 1 = �I�m not an audiophile at all� and 5 = �I�m a hardcore tweak.� (�Tweak� is the word Manny chose; I would not have used such terminology, which I find belittling in this context). The self-proclaimed hardcore audiophiles got 48% correct; the rest got 50% correct. Again, no significant differences based on whether or not a listener felt he was an audiophile or not.

Those above the median age of 50 scored 43% as a group; those 50 and younger scored 53% as a group. Those who frequently attend concerts of un-amplified music scored 44%, those who don�t scored 50%. Those who play a musical instrument scored 47%, those who don�t 50%. The 9 out of 15 participants who have invested in after-market power cords scored 48%.

Twelve of the 15 participants gave themselves a 3 or better on the 1 to 5 scale of degree of audiophile dedication. Half of the listeners gave themselves a 3 or better regarding their belief that they could hear difference between power cords. Those who rated themselves above the median for their perceived ability to discern differences between power cords scored 49%, the same as those who rated themselves below the median.

Those who on the post-test survey felt most strongly that they had heard differences between cords during the test did not perform better than those who rated their abilities at or below the median. Those who thought they did best scored 45%, while those who thought they did so-so or poorly scored 50%.

quote:

Orijinalden alıntı: astramastra

SM forumunda Hakan bey,TTAF speaker ve cord larla ilgili izlenimlerini paylaşmıştı.

BURADAN bakabilirsiniz.

quote:

Orijinalden alıntı: SertaçS

quote: Orijinalden alıntı: astramastra SM forumunda Hakan bey,TTAF speaker ve cord larla ilgili izlenimlerini paylaşmıştı. BURADAN bakabilirsiniz.

Evet bu yazıyı okudum genel olarak kablolar beğenilmiş ama burdaki ürünler üst modeller. Zaten o yazıda şöyle bir paragraf var ''Siz bu yazıyı okurken devam eden kampanyada 70TL karşılığında hiç fena gözükmeyen bir kablo meraklılara sunuluyordu. Keşke elimde bu kabloda da bulunsaydı da sizleri bilgilendirebilseydim.'' Kampanya süresi de uzatılmış bu arada..

quote:

1) LEVEL DIFFERENCES are easily eliminated by matching the levels before starting the listening test. This is done by feeding a continuous sound (anything from a sine wave to white or pink noise) into the amps and measuring their output using an ordinary AC volt meter. The input level to the louder of the two amps will need to be attenuated until the levels of the amps are matched as closely as possible (must be matched to within 1/10 dB).

quote:

In the calibration mode, the ABX Comparator will produce a 1 volt RMS, 1 kHz tone and send it to both channels
of both amplifiers in place of the audio signal input. At the same time, the digital voltmeter display will show
the output level from each amplifier channel, starting with Channel 1 of Amplifier A. In Calibration Mode,
however, the loudspeakers are muted, so you won’t hear the test signal.

quote:

Orijinalden alıntı: dustdevil

@kdundar

Şu yazıyı okumanızı öneririm, google araması ile biraz önce buldum ama genelde benzer şeyler bulabilirsiniz:

Özetle ses seviyesinin eşitlenmesi voltmetre ve test tonları ile yapılmalı. Başka yerlerde de okumuştum, kulak veya ses basıncını ölçen cihazlar yeteri kadar hassas ve doğru değil deniyor.

quote: 1) LEVEL DIFFERENCES are easily eliminated by matching the levels before starting the listening test. This is done by feeding a continuous sound (anything from a sine wave to white or pink noise) into the amps and measuring their output using an ordinary AC volt meter. The input level to the louder of the two amps will need to be attenuated until the levels of the amps are matched as closely as possible (must be matched to within 1/10 dB).

Alıntı bu dökümandan, ses seviyesi dışında diğer dikkat edilmesi gerekenleri de yazmış:

http://www.sanderssoundsystems.com/technical-white-papers/audio-equipment-testing-wp




Profesyonel test cihazları da aynı tekniği kullanıyor:

quote: In the calibration mode, the ABX Comparator will produce a 1 volt RMS, 1 kHz tone and send it to both channels of both amplifiers in place of the audio signal input. At the same time, the digital voltmeter display will show the output level from each amplifier channel, starting with Channel 1 of Amplifier A. In Calibration Mode, however, the loudspeakers are muted, so you won’t hear the test signal.

http://www.ackthud.net/shawnfogg/pics/temp/ABX_manual.pdf