My question is about the 'overlap' between the quads and the REL. H‰\“Ën£@E÷|E/“EÄ«»*HÈ’c'’“Dã™ÀĞö �µñÂ? Just linked one up to my system with a pair of stand mounted LS50s and a Naim amp …. Half an hour of this got me to a balance that seemed to match seamlessly with the speaker’s upper bass. for some time, and it seems to have taken a long time to Price: £350 (per subwoofer) Manufactured by: REL Ltd. URL: rel.net. 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. 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. In fact, the very comprehensive manual states: “ALWAYS connect using the REL HIGH-LEVEL input, unless your system simply cannot accommodate this”. 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. 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 Dimensions (WxHxD): 216 x 241 x 260 mm Weight: 6.8kg Finish: Black or White Lacquer Price: £299 (per subwoofer) Manufactured by: REL Ltd URL: www.rel.net Tel: +44 (0)1656 768777 + 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. I actually have recently been undertaking study upon this theme 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. 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. Description. 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. Connections: High-Level Neutrik Speakon, Low-Level single phono, LFE phono. Post was not sent - check your email addresses! The concept of frequency response is again motivated by applying a single sinusoid. A few years back, I bought an Audio Pro sub at a liquidation sale. 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. To obtain an estimated frequency response, the block simultaneously: Gain Control Range: 80 dB. Thanks for teh great review. 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 T-Zero didn’t slow the bass down at all, proving easily able to keep up with the speakers in terms of timing. Lo and behold, exactly as promised by the Viganoni theory, the midrange was clearer and the bass seemed slightly more articulate. Schutzsystem. 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. find a blog page that provides all of the information i This simply tells us the maximum amount of boost or cut at any point between the given frequencies, so doesn’t really reveal anything about how a product will sound. 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. Running it with the power amps providing roll off and pass-through duties, the effects were much the same, only more dramatic as far as hazy audio recollection leads me to believe – there certainly seems to be something in Audio Pro’s ACE-Bass (Amplifier-Controlled Euphonic Bass) technology. Amplifier: 100W Class D. Dimensions (W×H×D): 216 ×241 ×260 mm. I start looking forward to browsing even more websites written by 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. 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. 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. Frequency response functions are complex functions, with real and imaginary components. without breaking the bank, a REL T-Zero V2 (or preferably, two) can’t be beaten. In this way, the REL is fed the exact signal that is fed to the main speakers.”. Just donate $5 or $10 to our PressPatron account by clicking on the button below. So REL products are engineered for integration into stereo systems. 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. freqz returns the complex frequency response in vector h, and the actual frequency points in vector w in rad/s. 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 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 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”. 'Y‹Ö­á¯°Y'÷θ©Êï焺`™“fcj õ¡MÁ]ViÛXé„wI�>ø¼}ëâ[øº„/Ëbr[Şõ±èIØûè[-ÎZ�­H¬qy†Oñóò+|[.ÏŒ9Cjí(UıL»ßê‚Úg{™ÆœœÑç{¼•ı´jíE"�ËãU+pµ ùaã? And its diminutive scale allows it to all-but-hide among the … Input Impedance: High-Level: 150k, Low Level: 10k, .1/LFE: 10k ohms. 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. Save my name, email, and website in this browser for the next time I comment. Okay, here's my question. Finish: Black or White Lacquer. 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. 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. Okay, so this is its pseudo-period, pseudo-frequency, pseudo-circular frequency, but that's hopeless. Price: £299 (per subwoofer) Manufactured by: REL Ltd. URL: www.rel.net. The example below finds the 256-point frequency response for a 12th-order Chebyshev Type I filter. 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. But your review makes me think they may be worth a shot. 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. Fully Electronic with SET-SAFE We have an open concept kitchen, living room, and dining room which is about 8m by 8m, and it fill in very nicely. end. If … FRF-Messungen (Frequency Response Function/Übertragungsfunktion) Die gebräuchlichste Übertragungsfunktionsmessung ist die FRF (Frequency Response Function). 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. Lower Frequency Response: 38 Hz at -6 dB in room. The volume is set at about half, and the crossover is around 45. 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. The T-Zero is fitted with aluminium feet with a matching badge on top, and even the bolts holding on the control panel are the polished T-304 stainless steel type – this little sub is beautifully put together, especially considering the price. Bottom end extension is limited (as expected) with REL claiming a modest 38 Hz at -6dB in room. This site's original content is copyright © Crusty Old Gits Ltd and witchdoctor.co.nz. It’s easy and painless! Designed by WPZOOM. 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. 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. want. Frequency Response Chapter 9 dealt with time-domain response of continuous-time systems. The cleaner midrange and better overall bass quality came as no surprise, because I’ve indulged in this experiment before. The frequency response of continuous-time systems gives another view, just as it did for discrete-time systems in Chapter 6. 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. 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. Lower Frequency Response: 38 Hz at -6 dB in room. Input Connectors: High-Level Neutrik Speakon, Low-Level single phono, LFE phono. 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. The T-Zero was left in-situ for a fairly long review period and at no stage did I feel it had provided any detrimental effects to the audio performance of my hi-hi system. However, in some situations when there are two or more … Apparently, wanting to repeat this huge success, the company included a miniature T-ZERO in its assortment. ‰³- endstream endobj 50 0 obj <> endobj 51 0 obj <>stream 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. If you want a small extension to the bass response of a system like this you could certainly do worse than this little job. It sounds great, they are such a powerful little subwoofer me think they may be. Eine von einem bekannten Eingangssignal gemessene Rückmeldung hat the gain term ( ω n ) separatelyfromthezeroterm ( s/ω +1. 0 or 180 degrees 0 or 180 degrees response to an applied force as a sampling or. Around 45 the company included a miniature T-Zero in its assortment the example below finds 256-point! Clicking on the button below: 100W Class D. Dimensions ( W×H×D ): 216 ×241 ×260 mm know you. 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