THE HRS 120
As with all German-Physiks loudspeakers the key feature of the HRS 120 is the use of our unique DDD driver. One of the most important advantages of the DDD driver is the very high speed with which it is able to respond to sudden changes in the music. These are referred to as transients and are what gives music its sense of life and dynamics. The DDD driver’s excellent transient response would however be a disadvantage if you tried to use it with a conventional bass system. This is because conventional bass systems cannot respond fast enough to keep up with the DDD driver. The result would be that the bass would always sound like it was lagging behind the rest of the music, so when we designed the HRS 120 we had to find a way of producing a bass system that would match the speed of the DDD driver.
Back to the Drawing Board
We went back to the drawing board and using detailed computer simulation techniques, designed what we regarded as a perfect cabinet, but without the constraints involved had we designed with a particular driver in mind. This approach was unusual, as it is normal to look at the data for the available drivers and then design a cabinet to match the chosen unit. This would however have meant us accepting the limitations of the available drivers and this was a compromise which we were not prepared to make. Having designed our perfect cabinet, we set about designing a new bass driver that would be the perfect match. The resulting system comprises a cabinet with an integrated Helmholtz resonator and a brand new bass driver, both of which we are proud to say are built in Germany. The perfect balance of these components produces a bass that is very fast and dynamic, as well as being extended and well controlled. It is never blurred or bloated, as is often found with large speakers and it is perfectly integrated with the output from the DDD driver.
The DDD Driver
The DDD driver is used on all German Physiks loudspeakers and the same quality of driver is used on all models from our entry level product, to the top of the range Gaudi. This revolutionary driver gives the same very important advantages to all German Physiks designs and is what sets them apart from our competitors. Its very low moving mass enables it to operate linearly over an extremely wide frequency range. The titanium DDD driver used on the standard HRS 120 covers the entire range from 240Hz to 21,500Hz. In a conventional design, this range would be covered by two or even three different types of driver and most importantly there would be a cross over point in the mid range, the area where our hearing is most sensitive.
Low Resonance Cabinet Design
One of the principle causes of degradation of a loudspeaker’s ability to resolve fine detail and thereby produce a sense of realism is the radiation of sound energy through the cabinet’s panels. To counter this, we designed the HRS 120’s cabinet panels to be as stiff as possible using the two pronged approach developed for our Carbon and Borderland models.
Adjustable High Frequency Output
Jumpers on the loudspeaker’s rear panel allow the high frequency output level to be adjusted in 4 steps: -2dB, flat, +2dB and +4dB. This allows the user to easily compensate for the variations in the absorption of high frequencies that occur due to different types of furnishings and room construction.
Designed for a Lifetime of Use
We use the same quality of parts in the HRS 120 as we use in our reference products, where we design for a minimum life expectancy of 25 years. We also apply the same meticulous care and attention to the manufacture and testing of the HRS 120 as we do with all of our other products. For example, the DDD driver support pillars, loudspeaker terminal mounting plates and all the screws and spikes are made from high quality V4 stainless steel. This provides excellent corrosion resistance and ensures that the HRS 120’s high cosmetic standard will be maintained over the product’s lifetime.
Hand Finished for Ultimate Quality
The HRS 120 is available in the customer’s choice of hand matched, hard wood veneers. Cabinets supplied in our High Gloss option are coated with several layers of lacquer and then hand polished to a deep lustrous finish. This can be re-polished in the event of it receiving minor damage. Please see the Finishes page for more details.
Special Order Version
A special order version of the HRS 120 is also available. This is fitted with a carbon fibre DDD driver which provides an extended frequency response and greater low level detail resolution. The cabinet is finished with carbon fibre re-enforced panels. These provide greater rigidity, further reducing cabinet talk and improving transparency. The cabinet is coated with several layers of lacquer and hand polished to a high lustre finish. The result is a stunningly beautiful and luxurious finish. Like our High Gloss option, this can be re-polished in the event of it receiving minor damage.
The HRS 120 Specifications