Tel: +44 (0)1656 768777 The volume is set at about half, and the crossover is around 45. 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. Um den Frequenzgang eines mechanischen Systems zu messen, muss das … 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. € 399,00. zum Angebot Fernsehservice Horvath Infos AGB. Sorry, your blog cannot share posts by email. Ô¾ô? Bottom end extension is limited (as expected) with REL claiming a modest 38 Hz at -6dB in room. Going for a higher end model would be my choice though. I guess it should be circular pseudo-frequency, or I don't know how you say that. Page 11 REL Set-Up Made Simple REL products are not traditional subwoofers, but are true Sub-Bass Systems. H‰œTkOÛ0ı�_q?¦5¶ã¼$„£LL †´‡Pn–G»”şû];iìñUÍóŞsÏ9>NéP˜2ŠĞœ"#åĞKgá\;§‰s˜°{ freqz returns the complex frequency response in vector h, and the actual frequency points in vector w in rad/s. 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. In this way, the REL is fed the exact signal that is fed to the main speakers.”. 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. With the speakers running on their own, the listening position has to be very carefully chosen so as not to fall into a null, with a resulting decline in bass weight. REL T-Zero. ‰³- endstream endobj 50 0 obj <> endobj 51 0 obj <>stream Apparently, wanting to repeat this huge success, the company included a miniature T-ZERO in its assortment. Your email address will not be published. Just donate $5 or $10 to our PressPatron account by clicking on the button below. However, integrating a subwoofer into a stereo system can be a frustrating exercise, especially for owners of floorstanding speakers. This site's original content is copyright © Crusty Old Gits Ltd and witchdoctor.co.nz. The cabinet is described as being “super stiff” and designed to drive up the resonant frequency to allow the damping of the “instrument-grade bracing” to be more effective. The Rel T Zero is small, discrete, and beautiful. Save my name, email, and website in this browser for the next time I comment. Required fields are marked *. However, the sub integrated with the room better than the speakers do, creating fewer high pressure bass nodes. I use "the" in scare quotes since, of course, there are often multiple cycles in time series data. The company is into good subwoofers, the kind that are intended to make music, not go boom. REL is a British company that’s dedicated to making subwoofers, but not just any subwoofers. 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. 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. Schutzsystem. REL T-ZERO Subwoofer . However, in some situations when there are two or more … ASHLEY KRAMER. The premise of T-Zero is to bring quality, the full REL connectivity suite, long throw drivers and powerful, reliable amplifiers to a new lower price point and dimension. Input Impedance: High-Level: 150k, Low Level: 10k, .1/LFE: 10k ohms. 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. Lower Frequency Response: 38 Hz at -6 dB in room. Your email address will not be published. Frequency-response methods can be used to supplement root locus: ... For a zero on the real axis, (LHP or RHP), the standard Bode form is G(s) = * s ω n ±1 +, which ensures unity dc-gain. This site's original content is copyright © Crusty Old Gits Ltd and witchdoctor.co.nz. 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. 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. 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 T-Zero didn’t slow the bass down at all, proving easily able to keep up with the speakers in terms of timing. Just linked one up to my system with a pair of stand mounted LS50s and a Naim amp …. 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. I actually have recently been undertaking study upon this theme Ähnlich wie die FFT-Analyse ist FRF typisch für ein System, welches eine von einem bekannten Eingangssignal gemessene Rückmeldung hat. – Frequency-response tests are, in general, simple and can be made accurately by readily-available equipment, e.g., dynamic signal analyzer. A beautiful finish on this thing as well though mine’s not really on display … Draw the gain term (ω n)separatelyfromthezeroterm(s/ω n +1). http://souforum.com/. Entertainment for Grownups – Hi-Fi, Home Theatre, Music, Movies, TV & Film, Gaming, Gadgets and more! With the T-Zero, I ended up with a noticeable but controlled increase in perceived low bass, which made high volume playback of tracks with substantial low frequency output somewhat more exciting than with the speakers alone, but the sub was unable to offer a huge amount of extra low frequency extension – after all, it isn’t capable of going down to sub-bass levels. The frequency is "the" period at which seasonal cycles repeat. Finish: Black or White Lacquer. In a word – impressive. always thought the bottom end lacked some punch although the mid and highs are very sweet. 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. Okay, so this is its pseudo-period, pseudo-frequency, pseudo-circular frequency, but that's hopeless. 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. Tel: +44 (0)1656 768777 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”. you down the road, and will take a look right here first of all the very next time All of our designs are true Sub-Bass Systems, meaning they are designed to reproduce 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. REL T-Zero << Previous Next >> Click to enlarge : Details . Amplifier: 100W Class D. Dimensions (W×H×D): 216 ×241 ×260 mm. It’s easy and painless! 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. I found running two that running the phase at 180 sounded correct and produced much more bass you could feel through my floorboards. 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. 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. And its diminutive scale allows it to all-but-hide among the … Half an hour of this got me to a balance that seemed to match seamlessly with the speaker’s upper bass. It’s a musical little beast, definitely suited for stereo environments, and in the right system, it’s a pleasure to listen to (I’ve heard more articulate units, albeit at a price point well above the REL’s) but users need to bear its ultimate limitations in mind when deciding to buy – if you want 20Hz flat, then you need a bigger box, end of story. – Correlation between frequency and transient responses is indirect, except for 2nd-order systems. 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. The frequency response of continuous-time systems gives another view, just as it did for discrete-time systems in Chapter 6. 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. Input Connectors: High-Level Neutrik Speakon, Low-Level single phono, LFE phono. 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!) 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. 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. They may also be represented in terms of magnitude and phase. When it comes to hooking up the T-Zero, users will find that REL takes a different approach to many subwoofer manufacturers. In the real world, you’ll often see frequency response specifications quote a range of frequencies, such as 20 Hz – 20 kHz, followed by the amount of variation in the frequency response quoted in decibels, such as +/- 6 dB. FRF-Messungen (Frequency Response Function/Übertragungsfunktion) Die gebräuchlichste Übertragungsfunktionsmessung ist die FRF (Frequency Response Function). (adsbygoogle = window.adsbygoogle || []).push({}); Give a little to support Witchdoctor’s quest to save high quality independent journalism. If … freqz can accept other parameters, such as a sampling frequency or a vector of arbitrary frequency points. 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. 36 Bewertungen Lieferzeit 2-7 Werktage . Glad I read this review it sounds great, they are such a powerful little subwoofer! They’re totally accepted and even loved in the home theatre environment, but somewhat scorned in stereo environments by much of the audiophile community. Little subwoofer a subwoofer into a stereo System can be Made accurately by readily-available equipment, e.g., dynamic analyzer...: High-Level Neutrik Speakon, Low-Level single phono, LFE phono it be! 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