Mener du at det innspillingstid er et slags komplott fra produsentenes side, eller...?
Det tror jeg vi kan skrinlegge. At utstyr drifter over tid, er ingen hemmelighet, derfor har mange klasse A/B-forsterkere mulighet for biasjustering. Se bl.a.:
http://www.tnt-audio.com/clinica/bias_e.html
Jeg er skeptisk til mye av det som står på tnt-audio sidene. Eller det som er skrevet av de som har innlegg der. Et eksempel:
Subject: YS Audio
Hi!
Just ran through your review ......
Symphonies and Concerto
Both units arrived double boxed and well packed. The outer boxed was stuffed with crumpled Chinese newspapers. The Owners Manuals could use some help (the English is poor) although it was easy to decipher the intent of the words.
Both units use point to point wiring in the audio circuits. (The power supply is mounted on a board.) Tubes used are a 6X4 as a rectifier tube, and 3 12AX7 tubes, one as an input tube for both channels. (The 12AX7 is a dual triode, basically two tubes inside the glass envelope.) The two remaining 12AX7s are the output tubes, which flank the input tube. Each 12AX7 is nestled inside a tube shield, presumably to reduce noise and interference. The buyer must install the 6X4. Funny thing here, while installing the tube, there a label beside the transformer "
Do not remove cover. No user serviceable parts inside."
The 6X4's are not used as rectifiers. The rectification is done bye 1N4007's at the secondary of the mains transformer.
Would you like to learn about the purpose of the 6X4?
Best regards,
Hans Kise
Norway
Hi Hans,
If I've made a mistake, please enlighten me.
I got the information about the 6x4 straight from the manufacturer's website. I've copied it here for your review:
The 6X4 Tube rectification opens up the soundstage and allows the music to "bloom".
The melody flows naturally, like a river. In contrast, solid state rectifiers emit electromagnetic pulses that resonate throughout the audio circuit and add an electronic haze that can be perceived as a highly unnatural noise or grain.
The unnaturalness of the solid state rectifier's turn on/turn off cycle creates a choppy, edgy feeling that over-emphasizes the leading edge of transients at the expense of a harmonic completeness and does not allow the individual notes to rise and decay naturally.
Best Regards,
Nels
Selv om det var referert til produsentens sider, var det altså feil. Bevisst forsøk på å lure kunder vil jeg påstå.
Her forklares det for alle at et 6X4 som likeretter gjør underverker med lyden. I motsetning til solid state likerettere. Så er det altså nettopp SS dioder som er benyttet som likeretter i dette produktet. Jeg har vist til felere eksempler fra tnt-audio som er graverende feil tidligere. Vær skeptisk!