Vandersteen Model Seven

[gstriftos]

Άντε να κάνουμε και λίγο χάζι

Throughout my listening sessions, including the playback of very familiar recordings, I kept asking myself "What was that?" As an analytical reviewer's tool, the Model Seven granted unprecedented access to the other side of the mixing board. Not everyone will hear this as a positive development, just as not everyone likes to see their favorite porn in hi-def142: Θεός). This level of resolution was once available only with electrostatic loudspeakers—along with a host of well-known negatives not in need of repeating here.

With the Model Seven, Vandersteen has finally made a speaker with "wow" factor. This relatively small, living-room–friendly package contains a dramatically graceful-looking, ultra-high-resolution speaker that continues the brand's sensational time- and phase-coherent soundstaging and unbeatable powered bass performance. Three of its highly evolved drivers feature Vandersteen's new cone technology, which produces the speed, transparency, and low distortion of the best planar and electrostatic panels—all in an exceedingly stiff, well-damped cabinet that also houses a powered subwoofer, with an 11-band room-compensation system thrown in.

While the Model Seven is expensive compared to previous Vandersteen speakers, it's among the finest-performing speakers I've heard in a pack where the competition costs more than twice as much—without the powered sub. But add that powered bass, a compact and attractive cabinet, and 11-band EQ, and this speaker might simultaneously be Richard Vandersteen's most expensive and his best value. With a pair of Model Sevens, I could live happily ever after.

Τιμή; $45,000/pair

Αναλυτικά το review: link

 

[gstriftos]

Ενδιαφέροντα στοιχεία:
1)Ενεργό τμήμα χαμηλών.
2)Ισοστάθμιση για τις χαμηλες.
3)Βallanced( crossover.

The fully balanced crossover network—with crossover frequencies at 100Hz, 600Hz, and 5kHz—uses the highest-quality, best-sounding components Vandersteen could find.

(Τι εννοεί ο ποιητής

 

[gstriftos]

Και επειδή ξέρω ότι ψοφάτε137 για τις μετρήσεις,βουαλά:

Fig.1 Vandersteen Model Seven, electrical impedance (solid) and phase (dashed) with rear tweeter off (top trace) and on, set to its maximum level (bottom). (2 ohms/vertical div.)

Fig.4 Vandersteen Model Seven, acoustic crossover on upper-midrange axis at 50", corrected for microphone response, with nearfield responses of upper-midrange unit (green) and lower-midrange unit (blue), both plotted below 350Hz and taken with high-pass filter in-circuit. Nearfield response of powered woofer shown with Contour set to: "1" (green), "4" (cyan), "7" (black), "9" (magenta), "10" (red).

Other than the in-room and nearfield measurements, for which I used an Earthworks QTC-40, the quasi-anechoic measurements of Vandersteen's Model Seven were all performed using DRA Labs' MLSSA system and a calibrated DPA 4006 microphone. The Seven has a low specified voltage sensitivity of 83.5dB/2.83V/m; my estimate of the figure was within experimental error of the specification, at 84dB(B)/2.83V/m. As well as requiring an amplifier capable of swinging enough volts to play at high levels, the Seven also needs high currents, especially with its rear tweeter switched on, when its impedance above 8kHz remains at a low 3 ohms (fig.1). The dip to 3.7 ohms in the upper bass, however, will be moderated by the fact that the line-level high-pass filter will have also started rolling off the low frequencies sent to the speaker's passive section.

Link