Inputs and Outputs Notes
Digital Signal Processor: The
AVR-1804 features a 32-bit "Melody 32" DSP processor from Analog
Devices. This high-quality DSP chip gives the receiver the ability to accurately
decode and reproduce the superior quality of DTS-ES Discrete 6.1, DTS-ES Matrix
6.1, DTS Neo:6, Dolby Digital EX and Dolby Pro Logic II.
24-bit, 96kHz D/A Converters:
The AVR-1804 uses highly accurate 24-bit, 96kHz D/A converters on all six
channels to handle digital to analog conversion, giving you superior sound
receiver incorporates a wide variety of surround modes to bring you maximum
enjoyment from your audio and video software. The surround modes include:
- Dolby Digital
- Dolby Digital EX
- Dolby Pro Logic II (Movie and
- DTS-ES Discrete 6.1
- DTS-ES Matrix 6.1
- DTS Neo:6 (Cinema
- Rock Arena
- Jazz Club
- Video Game
- Mono Movie
- 5CH/6CH Stereo
Input: The AVR-1804 is
equipped with a 5.1-channel input to accommodate outboard decoders. It has a
wide bandwidth of up to 100kHz to accommodate high-resolution audio sources such
as DVD-Audio and SACD.
Personal Memory Plus:
The Personal Memory Plus function automatically memorizes the surround mode,
channel volume, surround parameters, and other settings for each of the separate
The Cinema EQ function gently decreases the level of the extreme high
frequencies, compensating for overly-bright sounding motion picture soundtracks.
Select this function if the sound from the front speakers is too bright. This
function only works in the Dolby Pro Logic II, Dolby Digital, and DTS surround
Dynamic Range Compression:
Motion picture soundtracks have tremendous dynamic range (the contrast between
very soft and very loud sounds). For listening late at night, or whenever the
maximum sound level is lower than usual, the Dynamic Range Compression allows
you to hear all of the sounds in the soundtrack (but with reduced dynamic
range). This only works when playing program sources recorded in Dolby Digital.
You can select one of the four settings: "Off", "Low",
"Mid" (middle), or "Hi" (high).
Dual Source/Dual Zone Capability: The
AVR-1804 allows you to enjoy one program source in a second room while another
source is playing in the main room. The Zone 2 output is a stereo pre-amp output,
which can send a signal to an amplifier or a set of powered speakers located in
another room. The Zone 2 pre-amp output is variable, allowing you to separately
adjust the volume with the receiver's remote. In addition, this receiver has a
Power Amp Assign function (controlled by a switch on the rear panel), which
allows you to assign the amplifier for the Surround Back channel to either the
main room or Zone 2. There are two speaker outputs on this channel allowing you
to power a pair of speakers in the main room (as Surround Back speakers) or in
two speakers connected to the Surround Back/Zone 2 terminals will be in
mono, not stereo.
Subwoofer Crossover: The
cutoff frequency of the subwoofer preamp output is selectable between 80, 100,
120, or 150Hz.
Last Function Memory:
This unit is equipped with a last function memory, which stores the input and
output setting conditions as they were immediately before the power was switched
The unit is also equipped with a back-up memory. This function provides
approximately one week of memory storage when the main unit's power switch is
off and with the power cord disconnected.
Multibrand Remote: In addition
to controlling the AVR-1804 and other Denon A/V components, the supplied remote
is pre-programmed to control many brands of A/V components, including DVD
players, Video Disc players, VCRs, TVs, cable boxes, DBS (satellite) receivers,
CD players, CD recorders, MiniDisc recorders, and tape decks.
Room-to-Room Control: The
receiver has a minijack input and output for Room-to-Room Remote Control. These
jacks allow you to control other remote-controllable components with an optional
Denon IR remote control extender system (RC-16, 17 or 18).
and Outputs Notes
Back/Zone 2 Speaker Outputs: This
receiver is equipped with 6 discrete amplifiers, including one for the Surround
Back/Zone 2 output. There are two speaker terminals (marked "I" and
"II") sharing the Surround Back/Zone 2 amplifier. This allows you to
connect 2 speakers in the main zone for the Surround Back channel, or power two
speakers in Zone 2. If two speakers are connected, they will be in mono and
should have a minimum impedance of 12-16 ohms.
Power Amp Assign switch on the back of the receiver has to be switched to
either "Surround Back" or "Zone 2", depending upon the
zone being used.
Connectors: The AVR-1804 is equipped with
binding post connectors for the Left Front A, Right Front A, Center, Left
Surround, Right Surround, and Surround Back/Zone 2 speakers. They
are not 5-way binding posts because a plastic collar prevents their use with
spade lugs and they are positioned too far apart to be used with dual banana
plugs. The Front B speakers have spring clip outputs.
receiver has a set of A/V inputs on the front panel behind a removable cover. It
includes stereo audio RCA jacks, composite and S-Video jacks, and an optical