DENON Описание PMA-2000R free download

File name Описание PMA-2000R.pdf

NEW MODEL INFORMATION PMA-2000R Audiophile Integrated Amplifier The PMA-2000R uses dual power transformers to provide extended high current capability with substantial power output. The chassis is divided to enable efficient placement of circuits so that left and right signal paths do not interfere with each other and negatively affect sound quality between the two channels. s 80 W + 80 W. More Power, and Greater s Leakage Canceling Dual Power Transformers Dynamic Range via UHC Ultra High Current The PMA-2000R features dual parallel-connected twin trans- Single Push-Pull Circuitry formers with vastly improved characteristics in the magnetic A high-current UHC-MOS amplification device has been used and coiled wire circuits as originally developed for the to boost the power supplied to the UHC single push-pull circuit- DENON POA-S1 monaural power amp. The transformers ry. This is an innovative design by DENON that finally resolves have also been "leakage canceling" (L.C.) mounted in order the conflicting problem of how to produce a solid capacity to to eliminate mutual interference caused by magnetic fields drive the speakers while preserving the delicate details of the and other factors. As a result, leakage flux from the power music. The PMA-2000R provides 80 watts per channel into transformers, a potential source of noise, is suppressed to a 8 ohms with nearly double that into 4 ohms to drive virtually any minimum, enabling the PMA-2000R's power supply section speaker system. Superior current linearity ensures a stable to supply clean, high-quality DC energy to the output stages. supply of current to the speakers, bringing out all of the dynam- ic range irrespective of impedance or efficiency. Comparison of transformer leakage flux (Source: DENON) s The UHC-MOS High-Current Amplification Device To obtain the ability to bring out all the delicate nuances of sound and the need for dynamic speaker drive, the PMA-2000R has adopted a high-current UHC-MOS amplifi- cation device capable of delivering a peak current of 120A to the output stage, as much as 3~10 times greater than that of Two LC mounted transformers Two transformers positioned at same polarity conventional MOS-FET devices. The current supply capacity of the UHC-MOS has been improved to exceed even that of bipolar transistors while preserving the high-quality sound of MOS-FETs. This ideal amplification device also incorporates single push-pul