B&K AVP3090 Specifications download pdf

Disc Reviews

Welcome back. It's been twenty-seven months since I reported on any significant changes in my home

theater and it's been almost six years since I purchased my reference DVD player. With the intervening

introduction of great progressive players and EX capable audio decoders, I think you might agree that I

was overdue for an upgrade.

The DVD Player

Since DVD's March '97 seven-city rollout, my player of choice has been the Sony DVP-S7000; Sony has

yet to produce a player that rivals its interlaced picture quality. To transform the 7000's interlaced

video to progressive video, I used a Faroudja LD-100 Line Doubler, the piece of equipment that

originally inspired me to believe that a film-like presentation was possible at home. As satisfying and

revealing as this combination has been, it also has its limitations. Published reports show that the

Sony's video frequency response is down only 1.5 dB at 5 MHz, but continues to decline as the

response approaches the limit of DVD's frequency content (6.75 MHz). So while fine textures and small

details are far from invisible, they are a tad suppressed. There's also an issue related to the Faroudja's

processing, which causes an interference pattern within the 6.75 MHz circle of an AVIA resolution test

pattern. And I've been forced to assess DTS audio tracks on an auxiliary Panasonic DVD player since

the 7000 isn't DTS-capable.

I've been watching progressive chip set technology mature and finally, as 2002 was drawing to a close,

I decided that it was time to buy a new player. Unfortunately, hard test data describing DVD player

performance is rather hard to find these days. Very few of the slick magazines publish test bench

numbers any more. Even “The Perfect Vision,” once the most visible (no pun intended) advocate of

achieving the best possible performance in home theater, ceased to publish player test-bench results.

TPV's current player reviews are purely subjective, no more helpful than “Audio Video Interiors.”

“Sound & Vision” continues to publish analytic test reports, and the Secrets of Home Theater web

site (SoHT) is also very helpful. But S&V doesn't address the Chroma Upsampling Error or ringing in

the anti-aliasing filter (which I'll explain briefly). And while SoHT addresses both, it publishes hard data

so infrequently that I simply couldn't wait. What's this obsessive home theater enthusiast to do?

Something odd.

I grabbed my oscilloscope, two 75-ohm cables, two pass-through BNC terminators, a few appropriate

75-ohm adaptors, the AVIA Guide to Home Theater DVD, the Toy Story DVD, and headed for my local

home electronics stores. I was amazed to find that in every store in which I asked, the salesman or

store manager allowed me to connect its floor samples to my ‘scope to test the players of interest. I

spent a couple of hours in each store, measuring and noting my results, moving from one candidate

player to another, much to the amusement and bewilderment of the sales staff. Not surprisingly, in

every store I was told that my antics were a completely new experience for them. What was I looking

for?

Published reports revealed enough about various players' performance (frequency response, signal-to-

noise ratio, Y-C delays, and so on) to limit my interest to a short list of about five candidates. I knew

that some didn't have the chroma upsampling error, but others were unknown, so I first observed the

Toy Story main menu screen on the most revealing CRT-based, HDTV rear projector each store had.

That was easy. I then verified the players' frequency responses on the ‘scope using AVIA's multiburst

advanced video test pattern, found at Resolution / Multiburst, and observed AVIA's widescreen

enhanced resolution pattern, found at Widescreen Enhanced / Resolution, taking particular note of the

6.75 MHz circle on the lower right. That was less critical, since I had already read published video

frequency response findings. Next came my single most important measurement, overwhelmingly

ignored, video ringing in the anti-aliasing filter.

Readers of my DVD reviews know that I always comment on edge halos, those pesky outlines seen at

Page

DVDFILE.COM: Mr. Blandings Builds his Dream Theater

4/7/2003

http://www.dvdfile.com/news/special_report/tech/mrblandings/upgrades.html

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Disc Reviews 1

Summary of Contents

Page 1 - Disc Reviews

Disc ReviewsWelcome back. It's been twenty-seven months since I reported on any significant changes in my home theater and it's been almost

Page 2

high contrast transitions in the video, which are either an MPEG-2 artifact or an intentional attempt to sharpen the image artificially (or sometimes

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been required on the component video outputs for some time; the earliest reference I found is for the Sony DVP-S9000, introduced years ago. More studi

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what you're doing, making this adjustment on your own without instrumentation could get you in deep trouble. If you insist on trying, please writ

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while the Extron transcoder blanked them. I consulted the input specifications for the Extron switcher and found compatibility issues with the Key Dig

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In my review of Blade II, I mentioned one of DVD's dirty little secrets: The X-Curve. Allow me to quote myself, “For reasons too involved to desc

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B&K AVP3090 Specifications

Browse online or download Specifications for Audio amplifiers B&K AVP3090. B&K AVP3090 Specifications User Manual

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