On this assessment we take a look at the RAAL 1995 Immanis headphone. The Immanis’ value is round €9.999 Euro.
Disclaimer: I acquired the Immanis from RAAL 1995 immediately. RAAL will not be associated to Headfonia in any approach.
Intro
I first wrote in regards to the RAAL Immanis headphone in one in every of my Excessive-Finish Munish present critiques and previews, so some elements of this text may look acquainted. As we’re September now, that additionally means I had fairly a little bit of delay publishing this assessment. Apologies to all of you who have been ready for this text, and particularly to Aleksandar.
RAAL 1995
Fairly a bit has modified since I wrote my preliminary article on the SR-1b. The place we then have been speaking about RAAL Requisite, we now with RAAL 1995 have a brand new title and firm. After all Aleksandar Radisavljevic nonetheless is the person in cost.
Aleksandar explains: RAAL-requisite launched the true-ribbon know-how to headphones, pioneering its approach into Head-Fi. Our purpose at R-r was to supply nice sounding, but sensibly priced headphones and ancillary elements. RAAL 1995 is right here to unleash the complete potential of the know-how and develop its efficiency to the subsequent stage.
Why then RAAL 1995 I hear you ask? Simple! Aleksandar’s first completed speaker was publicly proven again in 1995, so he’s going again to his roots with the naming. RAAL 1995 is specializing in a higher-end headphone phase, after all nonetheless utilizing ribbon drivers.
When you’re not acquainted but with RAAL Requisite’s iconic SR-1b headphone, I counsel to learn up on the SR-1b article first, yow will discover it right here:
RAAL 1995’s web site remains to be beneath improvement, however yow will discover it here sooner or later.
Ribbon know-how
Earlier than persevering with with the assessment, let’s shortly uncover the True Ribbon know-how.
From Wikipedia:
A ribbon speaker consists of a skinny metal-film ribbon suspended in a magnetic subject. {The electrical} sign is utilized to the ribbon, which strikes with it to create the sound. The benefit of a ribbon driver is that the ribbon has little or no mass; thus, it may possibly speed up in a short time, yielding excellent high-frequency response. Ribbon loudspeakers are sometimes very fragile—some might be torn by a robust gust of air. Most ribbon tweeters emit sound in a dipole sample. A couple of have backings that restrict the dipole radiation sample. Above and under the ends of the kind of rectangular ribbon, there may be much less audible output as a result of part cancellation, however the exact quantity of directivity is determined by ribbon size.
Ribbon designs usually require exceptionally highly effective magnets, which makes them pricey to fabricate. Ribbons have a really low resistance that the majority amplifiers can not drive immediately. Because of this, a step down transformer is usually used to extend the present by the ribbon. The amplifier “sees” a load that’s the ribbon’s resistance occasions the transformer turns ratio squared. The transformer have to be rigorously designed in order that its frequency response and parasitic losses don’t degrade the sound, additional rising value and complication relative to standard designs.
Immanis
The place the SR-1a and SR-1b had just one ribbon, the RAAL 1995 Immanis sports activities 3 Ribbon drivers, Magna sports activities two. The design has utterly modified as nicely, and the headphone now appears to be like like common headphones. Extra on that later on this article.
Below the hood, every thing is new in comparison with the SR-1b. That is the subsequent era or ribbon drivers that in sure areas parted methods with the outdated, however inherited the very best options of the earlier ones. Aleksandar explains: “We now have our new R² and R³ drivers that exploit a brand new concept that small variations in ribbon segments are useful. We tune the segments barely in another way, to allow them to’t repeat errors in the identical approach. We name it complimentary tuning. You possibly can’t do this with a single ribbon, or some other single diaphragm, so now we’re doubling and tripling them. This not simply to get extra SPL or sensitivity, the plain advantages, however so as to add one other layer of enchancment in sound high quality. Imperfections are inevitable. It’s about managing them in a approach that doesn’t compromise different areas of sound high quality.”
The three Immanis ribbons have a mixed floor space of 25.2 cm², a shell diameter of 11 cm and an impedance of 0.057Ω (0.29Ω with the 1.8 m lengthy Star-8 MkII headphone cable). The utmost sound stress stage is round 118 dB. Compared, the Immanis ribbons are 1.45 occasions bigger than the SR-1. Between Immanis and Magna, Immanis gives 50% extra floor space than Magna and has a bigger entrance chamber. The SPL functionality of 118dB disproves the stereotype of fragile ribbons and underlines the efficiency of those Serbian ribbon headphones.
Interface & Cables
The Raal 1995 headphones aren’t your common plug and play headphones, and to ensure that your amp to work accurately with the Immanis headphone it is advisable to use one in every of Raal’s Ribbon Present Drive Interfaces just like the TI-1b or their latest one (RCD-32(Ohm)) which you’ll see within the footage. Each interfaces work superb, you don’t want to purchase a brand new interface when you’ve got one already. The RCD Interface, that includes objective designed, highest-quality, toroidal transformers is designed within the type of a headphone stand. Toroidal transformers convert a voltage-controlled amplifier output right into a current-controlled sign for driving the ribbons.
You additionally want to make use of a special headphone cable in addition to an input Cable. You should buy a full bundle with every thing you want, so no worries there. If you have already got the cables and interface, then you should purchase the Immanis solely. Opposite to with the SR-1b you now not could use the open-baffle Compensation Barrels. The barrels will change the supposed sound signature but additionally, due to lowering the extent above 2k for about 5dB, they might overload the ribbons with bass whenever you enhance the quantity to compensate for the 5dB loss. So make sure that to take away the barrels out of your SR-1a/b system when switching to the (Magna or) Immanis.
Principally you join the headphone output of your amp to the (TI-1b/RCD) interface. You join the Immanis to that interface together with your particular cable. The quantity dial used is the one in every of your headphone amp. It’s fairly easy actually. Immanis – in principle – requires just one.5 watts, permitting for greater effectivity and wider compatibility. Appropriate amplifiers, such because the Auris Headonia 10th Anniversary 300B or the Trafomatic Primavera with SV811-10, present full energy to the interface.
When you don’t need to use the interface, you possibly can choose to purchase one of many uncommon ribbon prepared amplifiers available on the market (just like the one from SAEQ). Appropriate amplifiers ought to have a low output impedance of lower than 10mV DC offset and appropriate for driving a great deal of 32Ω or above.
The article continues on the second web page. Click here or use the jumps under to proceed studying.
Web page 1: Intro, RAAL 1995, Ribbon technology, Immanis, Interface & Cables
Web page 3: Sound Synergy, Comparisons, Conclusion, Summary
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