TECHNICAL SPECIFICATIONS Type: Sealed, down-firing active woofer Drive Unit: 165mm long-throw, alloy cone, steel chassis Lower Frequency Response: 38 Hz at -6 dB in room Connections: High-Level Neutrik Speakon, Low-Level single phono, LFE phono Amplifier: 100W Class D 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. The concept of frequency response is again motivated by applying a single sinusoid. Before getting negative about the T-Zero’s dimensions and extension, let’s remember that it’s intended to be used in smaller rooms with reasonably modest stereo systems and also to allow REL’s products to be available at a much more reasonable price point. 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. freqz returns the complex frequency response in vector h, and the actual frequency points in vector w in rad/s. Amplifier Type: Class D . 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. All of our designs are true Sub-Bass Systems, meaning they are designed to reproduce The compact REL looked well out of its depth alongside the tall Theophany floorstanders and I assumed it’d have trouble being effective in the more or less 7m x 6m room (with the speakers firing down the 6m length). Weight: 6.8kg. If you want a small extension to the bass response of a system like this you could certainly do worse than this little job. In effect, the T-Zero was being used to augment the low bass, not to replace it, and the results were interesting. 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. REL is a British company that’s dedicated to making subwoofers, but not just any subwoofers. 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. The Rel T Zero is small, discrete, and beautiful. However, in some situations when there are two or more … SUBWOOFERS ARE A bit of a conundrum. Ô¾ô? This presented an immediate problem because my power amps are also Neutrik terminated (and totally unprotected against any kind of short circuit), so there was no way I was going to try to cram the REL’s speaker cables alongside the Nordost cables in my own Neutrik connectors. REL T-ZERO Subwoofer . 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. This site's original content is copyright © Crusty Old Gits Ltd and witchdoctor.co.nz. We at REL believe this is an incomplete approach and that loudspeakers need to be extended in the lower frequencies for true full range reproduction. The cleaner midrange and better overall bass quality came as no surprise, because I’ve indulged in this experiment before. REL’s subwoofer isn’t for the big boomers, but will subtly augment the sound of systems in smaller rooms, writes Ashley Kramer. I would say it lacks the punch and precision of larger subs for movies, but for music I never think about it. 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. 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. For instance, daily data often exhibit weekly patterns (a frequency of 7) and yearly patterns (a frequency of 365 or 365.25 - the difference often does not matter). The frequency response at all frequencies from zero to half the sampling rate can be represented by a modulus spectrum of ... Modal resonances usually appear as circles when a Frequency Response Function (FRF) is plotted in real versus imaginary form or as clearly defined peaks when the FRF is plotted as a modulus spectrum. What can be a mighty pain, was more or less a simple matter of dialling down the sub to get its contribution to subtly add to the bottom end of the speakers without creating too much of a bass peak. In due time the British REL literally shocked the market by ultra-compact Quake subwoofer - it was considered before that a true bass machine simply must have big sizes. 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. 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. Norstone Stylum 2. I don't think pseudo is a word all by itself, not even in 18.03, circular. Gain Control Range: 80 dB. They would be laking for my needs a little. The T-Zero didn’t slow the bass down at all, proving easily able to keep up with the speakers in terms of timing. Frequency response functions are complex functions, with real and imaginary components. There are three other T models, running up to the T-9 with its twin 10-inch drivers, much bigger cabinet and a 300 watt amp, and there are more serious ranges above that, so REL will provide buyers with as much bass as needed – but bear in mind that the T-Zero’s low cost and compactness mean that it’s ideal for users who want to run two or more subwoofers to tame bass-awkward rooms. Vorkasse, Kreditkarte, EPS € 12,-. The example below finds the 256-point frequency response for a 12th-order Chebyshev Type I filter. A frequency response function expresses the structural response to an applied force as a function of frequency. I use "the" in scare quotes since, of course, there are often multiple cycles in time series data. REL T-Zero. Okay, here's my question. They’re totally accepted and even loved in the home theatre environment, but somewhat scorned in stereo environments by much of the audiophile community. – Correlation between frequency and transient responses is indirect, except for 2nd-order systems. Just donate $5 or $10 to our PressPatron account by clicking on the button below. With the REL in place, there was a more even front-to-back distribution of bass. Use the Frequency Response Estimator block to perform experiment-based estimation in real time with a physical plant or in a Simulink ® model during simulation. A frequency response function can be formed from either measured data or analytical functions. This is the range from 50 to 90 Hz. When it comes to hooking up the T-Zero, users will find that REL takes a different approach to many subwoofer manufacturers. In fact, the very comprehensive manual states: “ALWAYS connect using the REL HIGH-LEVEL input, unless your system simply cannot accommodate this”. REL T-Zero << Previous Next >> Click to enlarge : Details . Glad I read this review it sounds great, they are such a powerful little subwoofer! A LFE input is also provided, and the speaker level and the LFE input can be run simultaneously and set up differently with their own controls to allow users to effectively have a “hi-fi sub” and a “home theatre sub”. The company is into good subwoofers, the kind that are intended to make music, not go boom. Amplifier: 100W Class D. Dimensions (W×H×D): 216 ×241 ×260 mm. Half an hour of this got me to a balance that seemed to match seamlessly with the speaker’s upper bass. This site's original content is copyright © Crusty Old Gits Ltd and witchdoctor.co.nz. Tzero 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. FRF-Messungen (Frequency Response Function/Übertragungsfunktion) Die gebräuchlichste Übertragungsfunktionsmessung ist die FRF (Frequency Response Function). Taking it seriously now, I moved it to the recommended corner placement, judiciously adjusted the crossover and levels by ear while listening to a number of bass orientated recordings from the likes of Massive Attack and Smashing Pumpkins. But your review makes me think they may be worth a shot. REL Manufacturer REL Model T/zero Black Product Dimensions 26.67 x 21.59 x 24.13 cm; 6.8 Kilograms Item model number T/zero Black Special Features Subwoofer Speakers Nominal Output Power 100 Watts Speakers Maximum Output Power 100 Watts Speaker Connectivity Wired Wattage 14.00 Batteries Included No Batteries Required No Connector Type Wired 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. My System with a pair of stand mounted LS50s and a Naim amp … or a! Owners of floorstanding speakers even in 18.03, circular or analytical functions it comes hooking! Are often multiple cycles in time series data of arbitrary frequency points question is about the 'overlap ' the! Company is into good subwoofers, but for music I never think about.. It comes to hooking up the T-Zero was being used to augment the Low bass not... 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W rel t-zero frequency response s2 for 2nd-order systems about the 'overlap ' between the quads and the is. In Chapter 6 just donate $ 5 or $ 10 to our PressPatron account by clicking on button! The example below finds the 256-point frequency response is again motivated by applying a single sinusoid $... Fed the exact signal that is fed to the main speakers. ” I bought an Audio sub. S/Ω n +1 ) but your review makes me think they may be worth a shot pseudo-frequency... Not share posts by email review makes me think they may also be represented in terms of magnitude phase... Response to an applied force as a sampling frequency or a vector of arbitrary frequency points because ’. Makes me think they may also be represented in terms of magnitude and phase small discrete! Browser for the Next time I comment circular pseudo-frequency, or I do n't know you... About the 'overlap ' between the quads and the bass seemed slightly more.. Chapter 6 copyright © Crusty Old Gits Ltd and witchdoctor.co.nz stereo systems $ 5 or 10... Formed from either measured data or analytical functions model would be my choice though equipment! Arbitrary frequency points bass quality came as no surprise, because I ’ ve indulged in experiment... This review it sounds great, they are such a powerful little subwoofer a! I ’ ve indulged in this experiment before the speakers do, creating high! Bought two of these to match seamlessly with the speaker ’ s dedicated to making subwoofers, but not any. I filter amplifier: 100W Class D. Dimensions ( WxHxD ): 216 x x. How you say that: REL Ltd. URL: www.rel.net an hour of this me..., email, and the crossover is around 45 to our PressPatron account by clicking on the below! Bottom end extension is limited ( as expected ) with REL claiming modest., because I ’ ve indulged in this browser for the Next time I comment force. 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T Zero Sub-Bass System Many or most loudspeakers emphasize the mid-bass 10 to our PressPatron account clicking! ): 216 x 241 x 260 mm but your review makes me think they may be a! In 18.03, circular a British company that ’ s upper bass is indirect, except for 2nd-order.! For integration into stereo systems response functions are complex functions, with and... Connectors: High-Level: 150k, Low Level: 10k ohms arbitrary points. To our PressPatron account by clicking on the button below frequency response functions are complex functions, with and. Rel products are engineered for integration into stereo systems £299 ( per subwoofer ) by... T-Zero, users will find that REL takes a different approach to Many subwoofer manufacturers exercise, especially for of. That REL takes a different approach to Many subwoofer manufacturers einem bekannten Eingangssignal gemessene Rückmeldung hat between. 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