Brinkmann is with the OASIS (16000 euro) sound advancing one in the high areas of rare turntables prior to the world elite.
- Turntable of Brinkmann OASIS + 10.5 + HRS OASIS base
- stereoplay technology – OASIS
- Data sheet
A turntable with direct drive? Something can be challenging analog fans shudder. The experiences with such drives, no shortage there until the late 80’s in the 70s, which play a role today in the DJ scene, due to its rapid acceleration and stopping times are too negative. But if the high-end veteran Helmut Brinkmann has a hand in the game and with the OASIS builds such a turntable, which costs EUR with the in-house arm, 10.5 whopping 13_500 curiosity is as a rejection. Finally, the name of Brinkmann emblazoned 34 years on very solid and perfectly processed equipment.
Who knows the profound nature of this developer, who suspects that the oasis of any moment mood is sprung. Several years pondering Brinkmann about the advantages and disadvantages of direct drive and how he must be to deliver the best sound.
Once, he threw the rapid deceleration and chip times overboard. Because this not only a relentless hard regulation is necessary, but also a very strong engine, preferably in connection with a light dish. The former, Brinkmann, was create unrest, since the motor is always back and forth controlled, so constantly accelerated and then slowed down. Naturally, a strong motor generates a large magnetic field, which heavily influenced the sitting directly above it, sensitive pickup. A lighter, thinner plate reinforced this effect, then cut the distance between the motor windings and the pickups.
Thus, it was clear that the Brinkmannsche direct drive would have a weak engine, a slow and delicate control, as well as a rich, thick platter, to a good shielding, which keeps magnetic fields by pickup.
But what does Sonic benefits a direct drive, the analog fan wonders now. One would be that the bearing of the turntable and motor are one. If you compare the massive steel axle, which turns in a tight tolerance from Duralumin on a durable Teflon mirror, with a bearing of any commercially available electric motor from a different drive, is clear that this must be beneficial. Yes the properties about the number of Poles and the necessary phase shift in a purchased engine are also given, and here too, Brinkmann wanted to realize his own ideas (see the article “Oasis of calm”).
Another advantage is that for the Direct drive any belt or friction are eliminated. Who ever has heard by different threads, round or flat belt, knows that this directly and indirectly may affect the sound quality.
While Brinkmann was very innovative at the drive, he returned for the remaining lots on components, had proven themselves already with his other drives. How about the 8 kg and 45 mm thick plate made of soft aluminum alloy. A fast attached glass plate, attached the vinyl disc with a well-functioning clamp damped him.
He not distanced from the rigid structure with three height-adjustable spikes. How meticulously Brinkmann here works, shown by the fact that two of the stainless steel spikes have a copper tip, the Spike close to the tone arm is, however, entirely made of stainless steel.
This attention to detail can be admired in the tonearm 10.5. It has low friction gimbal bearings, which runs a stainless steel tip into balls. Very stable tonearm dur aluminium gets still an additional surface treatment after the anodizing, so that it dissipates the sound faster. Nice also its practicality: the quite long with 10.5 inch arm has a dynamic mass of about 10 grams and harmonises perfectly with modern Abbot asters.
So nothing, said the reference scanner Lyra Titan i (6/06) to assemble and sound samples first in the listening room to start. But the high expectations have been disappointed once. Especially in passages, the OASIS made a slightly squeezed and intrusive impression. Lay it on the ground? The tester did the test and tried different tables and racks. And indeed: on the Naim Fraim (12/01) won the spatial reproduction of stability and the bass of depth and precision. But still though milder was at to continue, but comprehensible sharpening. Asked about, Brinkmann specifically recommended the Isulation platform built by the American specialists HRS for the OASIS.
And really, barely played the OASIS on the 23.2 kilogram and marked with Sorbothanfüßen platform, the doubts of the tester of pure enthusiasm gave way. Now nearly all agreed: the Oassis forms a tonal unit with the base and was consequently classified with her.
And it was also clear that the OASIS on this basis pari passu with the reference Linn LP 12 SE + tonearm played EKOS SE (3/07). Where the OASIS had other virtues than the Scotsman. This gave more musical momentum and let voices sound fine as well articulated. The OASIS countered with more accurately positioned instruments and a subtly, but especially deeper stage. In addition, he built a deeper sufficient bass Foundation.
Superbly but was its ability to make, as it is able in this respect very good LP 12 SE tones even earlier. It seemed that at the Linn the sounds from a quiet noise appeared, while they were at the oasis of a still quieter background. That this effect to map the drive was a comparison with the – up on the thicker plate, showed the heated bearings and the drive belts – similar Brinkmann La Grange. Again, the OASIS bordered sharper each other instruments, gave more detail than the belt brother in piano passages.
On the dynamic side but kept the Linn, probably because of the mounts sub chassis, the upper hand. So se sounded at the OASIS despite HRS based loud brass inserts sometimes slightly cramped and not so fluent-locker as with the LP 12 This remained the soundstage mezzoforte passages at the OASIS unshakeable and minimally transparent – untermStrich so a draw.
The result is in any case a sensation: a turntables as stereoplays drive reference. Who would have thought that? Probably none. Brinkmann showed much courage to go that route. But it has paid off.
Electric motors use the physical effect that live head build up a magnetic field. Thus, coils are a basic component of a motor. As a counterpart, you need more magnets. At the OASIS, it is an eight-pole ring magnet, which lies about four coils. Now, a current flows through the coils, build this a magnetic field which attracts the poles of magnets or repelling depending on the polarity. As a result, the ring magnet connected sitting via sub plate with the platter on the bearing axis, is placed in rotation.
Magnetic field sensitive Hall sensors capture the momentary position of the pole and worry about amplifier ensure that the current always stronger or weaker flows through the coil at the right moment. The phase relationship of the Spulentromes with one another is 25 degrees. This and the arrangement of the coils cause the motor not jerky, but soft and uniform turns.
The speed is queried via disk by means of opto couplers: once the desired speed is reached, the power is reduced by the coils.
Brinkmann OASIS + 10.5 + HRS OASIS base
Technical data and test results
|Dimensions (W x D x H)||52,0 x 14.0 x 40.0 cm|
|Target velocity deviation|
|Rumble noise (weighted)|
|Measuring record / coupler||73 / 81 dB|
|Short conclusion||Brinkmanns OASIS has a direct drive unique in the field of the high end. His long-range playback and richly detailed art make him the stereoplay reference.|
|Sound||Absolute top class|
(maximum 70 points)
(maximum 10 points)
|Practice (max 15 points)||8|
(maximum 10 points)
|Overall rating (maximum 120||very good-86 points|
|Price / performance||good-very good|
|tested in issue:||1 / 09|