luni, 29 decembrie 2008
sâmbătă, 27 decembrie 2008
Art. No. 5923Characteristics and sound properties
The VOX 252 is an upright speaker with its subwoofer TIW 250 8 Ohm let into the side-wall. This design enables the front panel to be kept very narrow making it that much easier to position. One of the most outstanding features of the TIW 250 8 Ohm is its unbelievable ability to reproduce the lowest range bass in surprisingly small cabinets. In the listening area, the bass pressure becomes tangible rather than audible, the sort of effect you would normally only expect from much larger speakers. The VOX 252 is, in this respect, well able to keep up with the larger column systems such as the EXPERIENCE V 20. As a result of the side-opening position of the TIW 250 8 Ohm's, the separating frequency between the subwoofer and the mid-range drivers has to be very low. This has been achieved by means of an especially intelligent frequency cross-over design.
In order not to restrict the dynamics at higher bass levels, a bass reflex tube with an exceptionally large cross-section and corresponding length has been designed. In this way, flow-related losses are kept to a minimum. The vent is at the bottom in the rear wall so as not to interfer with the attractive appearance of the front face. If the speaker is to be placed right against a wall, the reflex opening can easily be positioned at the front. The bevel on the front will then, however, have to be narrower.
This version of the VOX contains the high-end ceramic dome tweeter KE 25 SC 8 Ohm. Therefore the crossover was modified in the tweeter section. An 18 dB high-pass produces an optimum phase relationship between tweeter an midrange. This creates an improvement of the clear location of each individual voice or instrument.
|VOX 200||VOX 251 HE|
|VOX 252 MHT||VOX 300|
Extract from Image HiFi (VOX 251)
"This VISATON system is the final proof that power, impressive breadth of the musical spectrum, rapid response and a fantastic overall sound panorama do not require monster-speakers."
Extract from Klang & Ton
"In comparison with the well-tempered VOX 251, itself a pleasure to listen to, the new version has added yet another rung to the top end of the ladder. Its bass reproduction is measurably more taught and its fundamental range more realistic and sonorous. The really interesting thing, however, is the effect of the new ceramic tweeter on the overall sound picture created by the unit."
Extract from STEREO
"With their VOX 252, the designers at Visaton in Germany have managed to surpass even the excellent qualities of the predecessor. Midrange sound that is crystal clear, now with better emphasis on the higher frequencies, excellent spatial separation, real dynamism and 'bass for grown-ups'. What more could one want? This VOX can certainly dispense with the assistance of extraneous tweeters and, in addition, it has restored the hierarchical position of its younger sister, the VOX 200."
Sound quality: 75 %
|Nominal power handling||200 W|
|Peak power handling||350 W|
|Nominal impedance||4 Ohm|
|Frequency response||28 - 25000 Hz|
|Mean sound pressure (nominal)||84 dB|
(1 W/1 m)
|Cut-off frequency||200 / 3000 Hz|
|Principle of Housing||Baßreflex|
|Net volume||70 l + 4 l|
|Outer dimension height||1150 mm|
|Outer dimension width||235 mm|
|Outer dimension depth||400 mm|
marți, 23 decembrie 2008
Contact: Id mess: cristinel_bm
Amplificator cu lampi-tuburi. Putere 6 w,lampi 6p14p
luni, 22 decembrie 2008
Low-pass (subwoofer) filter: 40Hz to 200Hz cutoff (variabila)
12dB/octava High-pass (subsonic) filter: 20Hz 18dB/octava
Cea mai joasa fecventa redata: CC (cu filtru subsonic dezactivat)
Gain: 12dB (variabila)
Egalizator: 12dB boost/cut (variabila)
30Hz la 190Hz frecventa de centru (variabila) Q 5
Distorsiuni si zgomot: 0.03% THD, -92dB unweighted (ref 1V)
Intrari 3: 1 de Linie si 2 de Semnal mare (de pe difuzoare)
Iesiri 2: Normala si Inversata cu 180 (Balansata)
Alimentare +/- 15V