#311 transistor cassette tape pro#

Rated conservatively at 150 watts per channel, the amplifier features extremely low distortion and noise.ġ968 – The Pro 800 Series tape recorders feature a logic-controlled transport.ġ969 – High Fidelity magazine calls the DC-300 the world’s best amplifier.ġ970 – The new IC-150 pre-amp and D-150 amplifier feature exceptional sound quality.ġ970 – DC-300 Amplifier patent obtained by Gerald Stanley.ġ971 – Crown invents the grounded bridge amplifier.ġ971 – Thanksgiving Day fire destroys over 60% of the Crown facility and the remainder of the plant is severely damaged.

The Gold Crown Stereo X recorder includes several innovations in component electronics.ġ962-63 – Crown invents the first solid-state, professional-quality tape recorder.ġ964 – An industry first: the SA 20-20 solid-state amplifier is a low-profile unit only 1-3/4 inches high.ġ967 – Introducing the DC-300 amplifier: the world’s first reliable, solid-state, high-power amplifier raises the bar once more. Speakers are designed and manufactured as accessories to tape recorders.ġ954 – Electromagnetic Braking Mechanism patent obtained by Clarence Moore.ġ955 – Tape recorder production grows and expands.ġ958 – The Royal makes its appearance as Crown's first stereo, 2-channel, tape recorder.ġ959 – Tape recorders take on a new rack-mount design with the introduction of the Crown Prince, along with the introduction of stand-alone vacuum tube amplifiers including the A15 and A30.ġ959 – Magnetic Recorder patent obtained by Clarence Moore.ġ960-61 – Tape recorder improvements include separate electronic and transport sections, push- button and relay control, and remote control capabilities. Tone control circuitry further enhances this unit designed for PA system use.ġ950s – The vacuum tube tape recorder line includes the Standard, Imperial, Broadcast, Prince, and Royal.ġ953 – A three-motor electromagnetic braking mechanism revolutionizes the tape recorder industry. And, as evidenced by DriveCore™, we’re continuing to set new standards for Crown’s future – and for the entire industry as well.ġ947 – Founders Ruby and Clarence Moore establish International Radio and Electronics Corporation, modifying and distributing high-quality tape recorders for rugged environments.ġ950 – Introduction of world’s first tape recorder with built-in power amplifier. Crown’s history is one of an uninterrupted list of achievements in sound. A never-ending list of industry-changing product introductions.

Multiple patents – more than any of our competitors combined. Best of all, as proud owners can attest, amplifiers with class-I technology sound great, with a powerful, accurate sound that stands out from the competition. It also makes them more reliable, since they are not constantly stressed to their limits or subjected to excessive heat. This characteristic means class-I amplifiers run better and longer-especially at lower impedances. Class-I handles reactive loudspeaker loads easily and gracefully, by reusing energy returned from the loudspeaker rather than dissipating it as heat or forcing the amp into premature current limiting. It provides unprecedented efficiency, requiring less power from the AC supply than other designs and that can add up to significant cost savings over the life of the amplifier. Class-I technology offers several key advantages. This approach not only drives the product to excellence, it drives the people to be the best that they can be.” Class-IĬlass-I, also known as BCA (Balanced Current Amplifier) is Crown’s patented, cutting-edge technology that gets more power out of an amplifier with less waste than was ever before possible. “Crown’s recipe is simple: design, build and service each product as if you were the customer. “In an era of cookbook designs and buggy software, it would seem that the most basic lessons of history have been forgotten,” he says. The end result is an ultra-efficient one-piece audio amplifier circuit that exhibits the exemplary audio quality of a highly evolved Class AB design.Ĭrown International Senior VP of R&D Gerald Stanley, who originally joined the company in 1964 as a tape recorder line technician and amplifier design engineer, comments on Crown’s success over the years. DriveCore's front-end drive circuits leverage the inherent efficiency of Class D output stages while also maintaining superb sonic characteristics. The foundational DriveCore™ circuitry is based on breakthroughs by Crown's own Gerald Stanley with five patents applying to the advanced feedback, modulation and output stage technologies. This new amplifier technology seamlessly integrates the amplifier drive stage into the power output stage fusing everything into a chip the size of a dime.

311 transistor cassette tape