Sherwood RD-8504 (rd8504) 7.1 Channel Dual Zone Home Audio/Video

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Sherwood RD-8504

7.1 Channel Dual Zone Home Audio/Video Receiver with HDMI Repeater, 1080p Upscalling and Dolby TrueHD


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This item has been discontinued

General Features:
  • Advanced 7.1 Dual Zone, HDMI Scaling Surround Sound Receiver
  • Multi-source, dual-zone operation offers independent source and playback per area of operation
  • SNAP (Sherwood Newcastle Automatic Parametric) EQ installed
  • Automatic speaker set-up with supplied microphone
  • 8 DSP Surround modes (Theater, Hall, Stadium, etc)
  • Multiple stage dynamic range control
  • Quartz PLL synthesized AM/FM tuning with 30 presets
  • Supports PC/Cellphone audio streaming via Bluetooth (Sherwood BT-R7 required and sold separately)
  • Front panel receptacle for optional Sherwood Bluetooth receiver
  • Sherwood digilink-i supports iPod Dock (Sherwood DS10 required and sold separately)
  • Color coded speaker terminals simplifies connections
  • Speaker on/off selectable switch
  • Dimensions: 15"D x 17-1/8"W x 6-11/16"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
Advanced Audio Features:
  • Stereo Power: 700 watts x 7 chan. (with no more than 0.2% THD at 6 Ohms)
  • Totally discrete amplifier stage for all channels
  • Digital to Analog converter: 192 kHz/24 bit
  • Quadruple crossover
  • Compatible Surround Decoding:
    • Dolby Digital: 5.1 multi-channel digital surround format
    • Dolby Digital+: multi-channel audio format supports up to 7.1 for HDTV and Blu-ray
    • Dolby Pro Logic IIx: expands any existing stereo- or 5.1-channel audio for a 6.1 or 7.1 channel playback
    • Dolby TruHD: a lossless coding that supports up to 8 channels of multi-channel surround that is true to the original source bit-for-bit
    • DTS: 5.1 multi-channel digital surround format used in multiple grades of applications
    • DTS 96/24: a digital audio format delivering great quality playback in 5.1-channels
    • DTS-HD Master Audio: a lossless audio format compatible with up to 7.1-channels and up to 96,000 Hz
Advanced Video Features:
  • HDMI version 1.3 transfers 1080p at 24, 30, and 60 frames per second
  • Anchor Bay ABT-2010 converts all video to display highest resolution
  • Supports Deep Color up to 36-bit and xvYCC Color Space
  • Video up-conversion scales all inputted signals to 1080p and out HDMI
  • On-screen menu displays adjustments for easy adjustments
  • 3 to 1 HDMI combines connections making hook-up and remote functions easier
  • A/V Sync delay by input corrects the delay between the video and audio
  • 3 HDMI v1.3
  • 2 Component video
  • 3 S-Video
  • 3 A/V RCA
  • 8 Composite Audio
  • 2 Digital Coaxial
  • 2 Digital Optical
  • 1 7.1 Channel
  • 1 HDMI v1.3
  • 1 Component Video
  • 2 S-Video
  • 2 A/V Composite
  • 1 Digital Optical

General Specifications

Maximum Watts per Channel
This is the maximum amount of watts per channel that the receiver is able to produce.
100 watts
THD (Total Harmonic Distortion)
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
Supported Channels
This is the supported channels of audio for the receiver. A 5.1 channel receiver will produce audio into 5 speakers and 1 subwoofer. A 7.1 audio channel receiver will produce audio into 7 speakers and 1 subwoofer. It is important that the receiver and the speaker system are compatible.
THX Certified
THX is a high-fidelity, high-quality, sound reproduction standard. Its superior audio quality is reserved for only the best. In order for a unit or product to be THX certified, strict qualifications must be met to insure the highest quality. If the unit is THX certified, you are sure to be impressed.
Video Processing
This is the devices processor that is dedicated to video.
Audio Processing
This is the devices processor that is dedicated to video.
Supported Sound Processing
This is the type of audio processing that the receiver is capable of.
Dolby Digital
Dolby Digital Plus
Dolby Pro Logic II
Dolby TrueHD
DTS 96/24
DTS-HD Master Audio
iPod Integration
This means that the receiver is capable of having a iPod connected to it. Some units will include a iPod docking station, while others require an additional connector and dock.
Yes (Adapter Sold Separately)
Multi-Zone means that the receiver is capable of playing multiple sources in multiple locations. That means that you can listen to different audio sources in different rooms in a house. The number listed is the number of different locations (or zones) that the receiver is able to send the audio to. This is sometimes called "Multi-Room".
Multi-Source Playback
This means that the receiver will offer an independent source per zone. This enables the user to have different audio playing in different rooms when connected properly.
Speaker A/B Switching
Allows a secondary set of speakers to be connected to the receiver. Depend the receiver, it can offer individual or combination playback of speakers A and B. For more details on this, please see the description or the product manual.
OSD (On Screen Display)
Indicates that the unit has menus and features that display on the screen. Typically, on-screen menus allow users to adjust audio and video settings easier.
Video Conversion
Some receivers has advanced technology that allows them to convert a video signal input to a different video output. For example, a receiver can convert a component video signal to a HDMI signal that connects to the monitor. This feature adds convenience to any home theater system.
Composite to HDMI
HDMI Switching
HDMI switching allows for multiple HDMI connections to be connected at a single time. The receiver can switch between the various HDMI inputs.

Please note that some HDMI switching capable receivers do not switch audio and require an additional cable for that.

HDMI Up-Conversion
HDMI Up-Conversion technology improves the image quality of regular DVDs, allowing them to play up to 1080p resolution.
Yes - 1080p
AM/FM Tuner
Most in-dash CD players have AM/FM playback allowing you listen to your favorite local radio stations.
Satellite Radio
This feature signifies whether or not the receiver is compatible with XM or Sirius Satellite Radio. "Optional" means while the receiver is capable of SIRIUS/XM playback and connectivity, you will still need to purchase an additional satellite tuner, adapter, and/or antenna.
HD Radio
This feature refers to whether or not the receiver is capable of receiving high-definition digital HD Radio broadcasts by either a built-in HD Radio tuner, or more commonly with the purchase of an optional HD Radio tuner box. Receivers which are HD Radio Ready generally require an additional purchase of a separate tuner.
Remote Control
Allows control of specific features and functions from a remote control. Typically they are used to prevent button wear on your radio, or to allow easier navigation of menus.
Energy Star Compliant
Energy Star is an internationally recognized standard for energy efficient products. These electronics save 20-30% on energy usage.
Primary Color
This is the main color of the item.
The width of the item from left to right (side-to-side) measured in inches.
The height of the item, measured from top to bottom, in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.

Receiver Inputs

Composite (RCA) Stereo Inputs
This is the number of composite (RCA) outputs on the unit.
HDMI Inputs
This is the number of HDMI inputs that the unit is capable of accepting.
Optical Digital Audio Inputs
This is the number of digital optical audio signals the receiver accepts.
Coaxial Digital Audio Inputs
This is the number of coaxial digital audio inputs that the receiver accepts.
Component Video Inputs
This is the number of component video (y,pb,pr) inputs that the unit is capable of accepting.
Multi-Channel Input
This is the type of multi-channel inputs that the device is capable of receiving.
Phono Input
This is a dedicated input for turntables. It connects the turntable to the receiver without needing a outboard phono preamp.
Front Panel Inputs
If the receiver has any front panel inputs, they will be listed here.
1 Set of Composite (RCA) Inputs
3.5mm Stereo Jack
Uses a 3.5mm stereo jack to connect to an audio source. This is the common size found on most CD and Mp3 players, as well as most home computers.
USB Input
This feature refers to whether or not the receiver features an input to connect a USB device via standard USB or mini-USB. The USB input may be a connection on the front or rear of the unit with an extension cable for connecting devices to the receiver. Some units have an optional input that allows for a USB adapter to be purchased separately and used with the unit.

Receiver Outputs

Composite (RCA) Stereo Outputs
This is the number of composite stereo, also known as RCA, outputs.
HDMI Outputs
This is the number of HDMI outputs that the receiver is capable of.
Component Video Outputs
This is the number of component video (y,pb,pr) outputs of the receiver.
Subwoofer Outputs
This is the number of subwoofer outputs that the receiver has.
Headphone Output
If the unit is capable of outputting audio to a pair of headphones, this is the type of jack that makes the connection.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


seymour, CT

Does what it says t can do at good price

February 9, 2011

Have it hooked up to 42" flat and xbox360 ps3 wii hd cable box
works great hdcp get set off by radio on xbox ocassionly
only real complaint is the amp rating is at 6ohms not 8 so it is a little weaker than advertised with 8 ohm speakers use a good powered sub with this radio it wont pump large speakers very hard

3 of 4 found this helpful

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Sherwood RD-8504

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Sherwood RD-8504

7.1 Channel Dual Zone Home Audio/Video Receiver with HDMI Repeater, 1080p Upscalling and Dolby TrueHD


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