ASHLEY KRAMER. Of course, there’ll be some combining of output of the two bass systems and this is usually what causes problems when trying to get a sub to work in a system with bigger speakers; it’s much easier with speakers that aren’t quite as bass capable. This is the range from 50 to 90 Hz. Input Impedance: High-Level: 150k, Low Level: 10k, .1/LFE: 10k ohms. The volume is set at about half, and the crossover is around 45. Weight: 6.8kg. At 216 x 241 x 260 mm (W x H x D) including the feet, the T-Zero doesn’t exactly strike one as the kind of unit you’d use to get down low, but it certainly impresses from a looks perspective. The price means that it’s possible and tempting to run a pair of them because two is almost always better than one when it comes to subs. 4.9. Description. find a blog page that provides all of the information i A frequency response function expresses the structural response to an applied force as a function of frequency. Vorkasse, Kreditkarte, EPS € 12,-. Lower Frequency Response: 38 Hz at -6 dB in room. T-Zero is built using a super stiff cabinet construction that drives the resonant frequency higher so it is more easily damped by our instrument-grade bracing. without breaking the bank, a REL T-Zero V2 (or preferably, two) can’t be beaten. Weight: 6.8kg. And its diminutive scale allows it to all-but-hide among the … Amplifier: 100W Class D. Dimensions (WxHxD): 216 x 241 x 260 mm. I would say it lacks the punch and precision of larger subs for movies, but for music I never think about it. Amplifier Type: Class D . Your website has definitely offered me personally with just the facts that I actually required. Franco would no doubt argue that even the biggest speakers still need to be rolled off because their low bass is probably a distortion-laden nightmare, but at that point, you’d need a much bigger sub. Price: £350 (per subwoofer) Manufactured by: REL Ltd. URL: rel.net. Frequency response functions are complex functions, with real and imaginary components. That’s not really subwoofer territory according to most people, especially the aforementioned Mr Viganoni, who reckons a sub needs to be able to get to 20Hz at -3dB. Schutzsystem. Half an hour of this got me to a balance that seemed to match seamlessly with the speaker’s upper bass. I don't think pseudo is a word all by itself, not even in 18.03, circular. freqz can accept other parameters, such as a sampling frequency or a vector of arbitrary frequency points. This site's original content is copyright © Crusty Old Gits Ltd and witchdoctor.co.nz. Lower Frequency Response: 38 Hz at -6 dB in room. The REL T-Zero, the baby of the company's subwoofer range, measures way less than a cubic foot and weighs just 6.8kg, but packs a 16.5cm down-firing long-throw driver powered by a 100W class D amp – the first time such and amp has been used in a REL sub. It’s finished in nine coats of hand rubbed black (or white) piano gloss lacquer, further polished on a rouging wheel using jewellery buffing compound and then hand polishing using micro fiber cloth and automotive waxes. It’s reasonably dead and dull when given a scientific hard knock with a calibrated knuckle, but that’s not too difficult to pull off when the longest edge of your cabinet is less than 300mm long. Required fields are marked *. ¼!oÀ[òüJ~�\²N‰:eNÎÁ�ìÀBğùüF�µåZ‹µ¶ à’\‚-Ù‚Yߢ¾e}‹ú–Y,²Xf±Èb™Å"‹e‹,–�Y²8:888:888:888:888%+˜}úº5yY˜Q�QX_P_X_P_X_P_X_P_˜Q�QØKĞK˜W�WØWĞWØW–¾œ¹`æÂ9æ œƒ`Âw*x§Â™f¢œ‰b&J…¿Ò_á¯ôWø+ışJ…¿Ò_á¯ôWø+ışJ…¿Ò_á_¡o‘åx¦*Èx¦2ú®éOøøï_9¶AÜ­æk�µ×âöZ¶ô²¯°£úÁíúiœL\…_òO€ h\ük endstream endobj 52 0 obj <> endobj 53 0 obj <>stream you down the road, and will take a look right here first of all the very next time Quite the opposite in fact, but this cut-off main speaker implementation isn’t how most users will run a sub, so the REL was set up with the main speakers getting a full range signal. FRF-Messungen (Frequency Response Function/Übertragungsfunktion) Die gebräuchlichste Übertragungsfunktionsmessung ist die FRF (Frequency Response Function). A frequency response function can be formed from either measured data or analytical functions. Despite the comparatively small driver and cabinet, the T-Zero can move a fair amount of air, but it doesn’t like to be driven outside its comfort zone. The ability to fit in with rolled off speaker environments or smaller speakers – which is its natural habitat – and to be able to delicately augment a set of bigger floorstanders, is due to the T-Zero’s ability to provide just enough bass for the job at hand, without getting carried away. If you start out with something like G(s) = (s +ω n), then factor as G(s) = ω n * s ω n +1 +. Instead of the default option of a RCA LFE input found on most subs, REL prefers to use a high-level (speaker level) input in a hi-fi environment. By connecting to the high-level input on the REL from the amplifier, you build forward the sonic signature of your main system, including the tonal balance and timing cues of the entire electronics chain. H‰\“Ën£@E÷|E/“EÄ«»*HÈ’c'’“Dã™ÀĞö �µñÂ? They would be laking for my needs a little. The theory of a subwoofer in a stereo system is sound,  because low bass is probably the most difficult part of the frequency spectrum to generate properly (unless you have big speakers, and even then, the results are by no means assured) and subwoofers are nothing if not low bass generators. The compact form factor obviously means that the huge drivers usually associated with subwoofers just aren’t feasible, so REL has implemented a single 6.5-inch (165mm) long-throw downward firing driver housed in a sealed cabinet and driven by 100 watts of Class D amplification. Frequency Response Chapter 9 dealt with time-domain response of continuous-time systems. To obtain an estimated frequency response, the block simultaneously: ’…Å_î“ #Hǘ$¶š ÕŒÛrÇÆâ¿€S| %!æÈ. Bass extension didn’t seem to be dramatically deeper than that produced by the speakers when they’re running full-range, even with the promised 9dB of acoustic amplification delivered by the corner loading – the laws of physics can only be helped along to a certain limited degree. We utilized 5 full coats of lacquer, and solid aluminium feet and badging because REL owners understand quality must extend throughout a product, not just in the most obvious locations. end. A REL is designed to augment the performance of “full range” speaker systems in order to provide, in certain cases, linear response below 12 Hz. want. We have an open concept kitchen, living room, and dining room which is about 8m by 8m, and it fill in very nicely. In fact, the very comprehensive manual states: “ALWAYS connect using the REL HIGH-LEVEL input, unless your system simply cannot accommodate this”. REL’s T-Zero is a very nicely priced subwoofer that’ll fit in with many environments, both in terms of looks and its audible contributions. Very impressed so far, the little Rel has no problem integrating into the sound stage and after a few minutes tweaking with the levels all is very pleasant. This paragraph will assist the internet visitors for creating new weblog or even a blog from start to Like other T-Series woofers, the T-Zero uses a custom-made woofer, a REL designed 6.5" Ultra-Long Throw, mated to a wicked fast Class D amplifier delivering a potent and ultra-green 100 Watts. Bottom end extension is limited (as expected) with REL claiming a modest 38 Hz at -6dB in room. for any real, even impulse-response .Thus, the frequency response is a real, even function of .A real frequency response has phase zero when it is positive, and phase when it is negative. So I cranked up the crossover and level knobs only to be greeted by a profoundly overblown low bass, even with the speakers now being rolled off at the bottom. The frequency response of continuous-time systems gives another view, just as it did for discrete-time systems in Chapter 6. The gloss surface is gorgeous! Um den Frequenzgang eines mechanischen Systems zu messen, muss das … If … In this way, the REL is fed the exact signal that is fed to the main speakers.”. The midrange benefits vanished as expected, but what was surprising was just how easy it was to get the REL to integrate with the system. Ähnlich wie die FFT-Analyse ist FRF typisch für ein System, welches eine von einem bekannten Eingangssignal gemessene Rückmeldung hat. Thanks for teh great review. They may also be represented in terms of magnitude and phase. If you want a small extension to the bass response of a system like this you could certainly do worse than this little job. 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