They’re totally accepted and even loved in the home theatre environment, but somewhat scorned in stereo environments by much of the audiophile community. Frequency response is $1/(1−ce^{iw})$, if you want to get amplitude information you just need to get the magnitude of this complex function and its phase will be the inverse of the phase of $1/(1−ce^{iw})$ or Your email address will not be published. The example below finds the 256-point frequency response for a 12th-order Chebyshev Type I filter. All of our designs are true Sub-Bass Systems, meaning they are designed to reproduce Going for a higher end model would be my choice though. Bottom end extension is limited (as expected) with REL claiming a modest 38 Hz at -6dB in room. end. Your website has definitely offered me personally with just the facts that I actually required. The T-Zero is a sealed box woofer, thus, REL was able to create a smaller box and lower cost while still retaining REL sound quality. It added to the bass without creating any major in-room boom and it once again smoothed out the bass response of the room, which was a very worthwhile side-effect. you down the road, and will take a look right here first of all the very next time Glad I read this review it sounds great, they are such a powerful little subwoofer! In a word – impressive. FRF-Messungen (Frequency Response Function/Übertragungsfunktion) Die gebräuchlichste Übertragungsfunktionsmessung ist die FRF (Frequency Response Function). Amplifier: 100W Class D. Dimensions (W×H×D): 216 ×241 ×260 mm. With the REL in place, there was a more even front-to-back distribution of bass. 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. 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. The Rel T Zero is small, discrete, and beautiful. 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). }¹V" ’ÍAĞUçtºÙmwC?›ô3ŒíŞÏæØ]ğ—ñZoşÔI^˜®oçûÕòß�›)Iãâıí2ûón8�I]›ôg¼y™ÃÍ“ô#t>ôÃÉMº¿NÓ_öÃl2³Z™Îc¡ÍôŞœ½I—eO».ŞïçÛS\óıįÛäM±\ç”iÇÎ_¦¦õ¡N>©³x¬Lı�Uâ‡î¿ûr_v8¶š�ÔβxŠüL~Wä This is the range from 50 to 90 Hz. Lower Frequency Response: 38 Hz at -6 dB in room. I start looking forward to browsing even more websites written by Connections: High-Level Neutrik Speakon, Low-Level single phono, LFE phono. For those who’re worried about their amp needing to drive the sub and the speakers, the user manual says: “This connection can be made without affecting the performance of the amplifier because the REL’s amplifier input impedance is 150,000 ohms, in effect not producing any additional demand whatsoever on the rest of your system. 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. Frequency response functions are complex functions, with real and imaginary components. However, integrating a subwoofer into a stereo system can be a frustrating exercise, especially for owners of floorstanding speakers. REL T-Zero. REL T-Zero (Farbe: High Gloss White), 6.5" Mikro Aktivsubwoofer Stück (Art# HD-008333) Preis vom: 22.05.2020, 12:40:42 (Preis kann jetzt höher sein!) 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. The company is into good subwoofers, the kind that are intended to make music, not go boom. The cleaner midrange and better overall bass quality came as no surprise, because I’ve indulged in this experiment before. REL supplies a 10m length of cable, terminated at one end with a Neutrik connector to plug into the sub, and with bare wire at the other end to connect to the amplifier’s left and right channel speaker terminals. 36 Bewertungen Lieferzeit 2-7 Werktage . We have an open concept kitchen, living room, and dining room which is about 8m by 8m, and it fill in very nicely. for some time, and it seems to have taken a long time to 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). Real Imag ω = 50 ⇒ Y X = 0.89∠−27 ... E1.1 Analysis of Circuits (2018-10340) Frequency Responses: 11 – 3 / 12 RC = 10ms Y X = 1 jωRC +1= 0.01j ω 0 0.5 1-0.4-0.2 0 X Y X-Y ω=300 Real Imag ω = 50 ⇒ Y X -1 0. Having heard how good this set up can sound, it seemed the logical approach, and in this case, I used the cut inputs on the power amps to feed them a rolled off signal and ran  RCA interconnects into the sub – combined with an adapter into its low level input. If … 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. – Frequency-response tests are, in general, simple and can be made accurately by readily-available equipment, e.g., dynamic signal analyzer. This paragraph will assist the internet visitors for creating new weblog or even a blog from start to Gain Control Range: 80 dB. freqz returns the complex frequency response in vector h, and the actual frequency points in vector w in rad/s. Presented with the opportunity to review one of the T-Series units, I jumped at the chance because I’m the proud owner of a five box amplification system that’s expressly been designed to work in a 2.1 layout. 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. Fully Electronic with SET-SAFE Entertainment for Grownups – Hi-Fi, Home Theatre, Music, Movies, TV & Film, Gaming, Gadgets and more! REL T-Zero << Previous Next >> Click to enlarge : Details . Lower Frequency Response: 38 Hz at -6 dB in room. That’s due to design and size, but of course its limited extension means that you wouldn’t use it to add bass to a set of speakers that reach way down low already. 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. Required fields are marked *. Thanks for teh great review. There’s method to this seeming madness, according to REL: “The purpose of connecting to the speaker output terminals is one of the unique secrets of REL’s success. 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. 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. 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. I use "the" in scare quotes since, of course, there are often multiple cycles in time series data. Then there are those subwoofers that just aren’t musical: they’re great for making big explosions bigger but less well suited to recreating the sound of a double bass or kick drum – good luck integrating one of those to a stereo system and ending up with something that sounds good. In fact, my own floorstanders will go comfortably lower than 38 Hz at -6dB, but the REL figures are definitely conservative as we’ll see, and in any event, there’s much more to bass than how deep it goes. Your email address will not be published. I have a fact-finding project. Page 11 REL Set-Up Made Simple REL products are not traditional subwoofers, but are true Sub-Bass Systems. A beautiful finish on this thing as well though mine’s not really on display … The quads have bass ports which are supposed to take them down to 48 hz or so but the woofers themselves roll off at 80hz. Real Analog - Circuits1 Labs: Ch11 Vid1: Introduction to Frequency Response Using frequency response to estimate a circuit's behavior. The rear panel is host to more or less the usual sub controls and inputs – with a low level input plus the LFE and high level speaker input. Just linked one up to my system with a pair of stand mounted LS50s and a Naim amp …. http://souforum.com/. The concept of frequency response is again motivated by applying a single sinusoid. 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. Power Output: 100 Watts (RMS) Phase Switch: Yes, 0 or 180 degrees. 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. What I know is that damping is generally just a multiplication coefficient in frequency response type of analysis and thus sometimes it is difficult to simulate real damping which is a time domain phenomenon into a frequency response simulation. Weight: 6.8kg. 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. 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. Vorkasse, Kreditkarte, EPS € 12,-. Price: £299 (per subwoofer) Manufactured by: REL Ltd. URL: www.rel.net. They would be laking for my needs a little. Input Impedance: High-Level: 150k, Low Level: 10k, .1/LFE: 10k ohms. Save my name, email, and website in this browser for the next time I comment. without breaking the bank, a REL T-Zero V2 (or preferably, two) can’t be beaten. The T-Zero is the baby of the T-Series, and baby is an apt term because as far as subs go, this thing is tiny. 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. T-ZERO: RRP: 749.00 : Specs: Main Specifications: - Type: Sealed, down-firing active woofer - Drive Unit: 6.5in., 165mm long-throw, steel chassis - Lower Frequency Response: 38 Hz at -6 dB in room - Input Connectors: High-Level Neutrik Speakon, Low-Level single phono, LFE phono - Input Impedance: High-Level: 150k, Low Level: 10k, .1/LFE: 10k ohms In fact, the very comprehensive manual states: “ALWAYS connect using the REL HIGH-LEVEL input, unless your system simply cannot accommodate this”. ASHLEY KRAMER. 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. Sorry, your blog cannot share posts by email. always thought the bottom end lacked some punch although the mid and highs are very sweet. freqz can accept other parameters, such as a sampling frequency or a vector of arbitrary frequency points. Price: £350 (per subwoofer) Manufactured by: REL Ltd. 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