Rosen Entertainment Sound

Rosen A9 Owner’s Manual

What makes the Rosen A9 DVD sound better than any other “in-car entertainment” system? A collection of unique audio features that we call Rosen Entertainment Sound. Rosen engineers know that true entertainment isn’t just visual – you’ve got to have great sound! You won’t find this collection of sonic improvements anywhere but Rosen.

RES Surround-sound.(DVD audio only).While many of us have home theatre systems with center-channel speakers and subwoofers, Rosen knows that most of us don’t have that luxury in our vehicles. So Rosen’s surround-sound circuitry re-creates surround effects when watching movies – even when using headphones!

RES Sound Processing. (DVD audio only). Movie soundtracks were meant to be heard in a quiet theatre using a powerful, multi-channel sound system – not in a moving car with a four-speaker stereo! The dialogue can be difficult to hear over road noise, and the most dynamic portions of the soundtrack often overpower the car’s sound system.

Dynamic limit of headphones and most car audio systems

DVD movie		DVD movie sound
sound levels	Sound-effects	levels with RES
without RES	dynamic peaks
	dynamic peaks
	Soundtrack dialogue

With RES Sound Processing turned on, dialogue is automatically louder and easier to hear, while loud passages, such as special effects, are automatically lowered slightly. Try RES whether you are listening through the car speakers or wearing headphones, and use it whenever you find it improves the sound. RES Sound Processing retains the original fidelity of the soundtrack, acoustically compensated for your vehicle. It also makes headphone listening even more enjoyable and comfortable.

RES True Two-Channel Stereo. RES uses stereo audio all the way through the signal chain – even in the FM modulator, a place where many manufacturers save money and use only mono components. Rosen believes that in the age of digital multi-channel cinema sound, two-channel stereo is the minimum acceptable audio solution for DVD enjoyment.

RES Audio Overdrive. Most “automotive” DVD players operate on 12 volts, and that’s about all that makes them “automotive”. Their DVD chips put out very low audio output voltages – maybe enough in a home system, but not enough for use in the challenging electrical environment of the automobile. RES A9 systems have what we call Audio Overdrive

–we almost double the audio voltage level from the DVD drive on the way to the rest of the system. Not only is sound quality improved, but the chances of picking up electrical noise are greatly reduced.

Background noise floor