P300hd manual


















Cambridge soundworks powered subwoofer: user guide 15 pages. Page 3: Important Safety Instructions Use a damp cloth for cleaning. The P HD features the finest drivers, precision internal crossover circuitry, and an elegant enclosure design. The design team at Cambridge SoundWorks believes there is no better combination of audiophile-level attention to detail and reasonable cost.

Page 5: System Configuration Do not tighten it. Then, screw a foot onto each of the spikes. Once the subwoofer is in its final position, adjust each foot so that the unit is level and stable. Don't close Designer while updating firmware. Firmware Versioning When updating firmware, update all hardware to the same firmware version to ensure consistent operation. Differences Between 3. Audio Encryption Improvements Firmware 4.

Web Applications Removed With firmware 4. You can access basic settings for the device by opening it from the Shure Web Device Discovery tool, but you must use Designer for full control. Download Designer at shure. P and Computer with Soft Codec.

Place a test call to make sure AEC is working properly. Hardware Codec System. Mobile Phone System. To ensure proper operation, only use: Apple-approved cables Cables with a plastic or non-conductive flange. Schematic View The schematic view in Designer provides an overview of the entire audio signal chain, with the ability to adjust settings and monitor signals.

Customizing the Workspace Create a custom environment to monitor and control a set of inputs, outputs, and processing blocks from a single screen.

Open as many dialogs as you need to keep important controls available. Custom Presets Use presets to quickly save and recall settings. Open the presets menu to reveal preset options: save as preset : Saves settings to the device load preset : Opens a configuration from the device import from file : Downloads a preset file from a computer onto the device.

Files may be selected through the browser or dragged into the import window. Automatic Gain Control AGC Automatic gain control adjusts channel levels to ensure consistent volume for all talkers, in all scenarios. Acoustic Echo Cancellation AEC In audio conferencing, a far-end talker may hear their voice echo as a result of a near-end microphone capturing audio from loudspeakers.

For best results, improve the acoustic environment when possible: Avoid pointing loudspeakers directly at microphones Reduce loudspeaker volume Position loudspeakers farther away from microphones Training the Acoustic Echo Cancellation Training is the process where the AEC optimizes processing based on the acoustic environment.

Adjusting Settings To adjust acoustic echo cancellation settings, open the AEC menu in the schematic view or inputs tab. Reference Meter Use the reference meter to visually verify the reference signal is present. ERLE Echo reduction loss enhancement displays the dB level of signal reduction the amount of echo being removed. Reference Select the channel that carries audio to the loudspeakers as the reference. Non-Linear Processing The primary component of the acoustic echo canceller is an adaptive filter.

Noise Reduction Noise reduction significantly reduces the amount of background noise in your signal caused by projectors, HVAC systems, or other environmental sources. Settings The noise reduction setting low, medium, or high represents the amount of reduction in dB. Compressor Use the compressor to control the dynamic range of the selected signal. Threshold When the audio signal exceeds the threshold value, the level is attenuated to prevent unwanted spikes in the output signal.

Ratio The ratio controls how much the signal is attenuated when it exceeds the threshold value. Delay Use the delay feature on the analog and USB outputs to synchronize audio and video. Matrix Mixer The matrix mixer routes audio signals between inputs and outputs for simple and flexible routing: Send a single input channel to multiple outputs Send multiple input channels to a single output Crosspoint Gain Crosspoint gain adjusts the gain between a specific input and output, to create separate submixes without changing input or output fader settings.

Routing Channels Connect inputs and outputs by selecting the box where they intersect. P Default Settings The default configuration enables calling to multiple far ends with near-end Shure microphones. Mute Sync Mute sync ensures that all connected devices in a conferencing system mute or unmute at the same time and at the correct point in the signal path. To use mute sync, make sure logic is enabled on all devices. Go to Inputs. Open the P in Designer and go to Inputs.

On any channel strip, select Logic enable. This enables logic on all channels. Set the Mute control function to Logic out. Go to Lights. Set the style to Ring. Route microphone signals to the processor manually or with Designer's Optimize workflow.

Adjusting Input levels The Inputs tab controls a channel's gain before it reaches the matrix mixer. Digital Sources Dante and USB Check the source level before it reaches the P Verify that the networked microphones or other Dante sources are operating at nominal output levels.

Set USB volume on the computer to the maximum setting if the volume control is accessible. Adjust the P's input gain in Designer: Use the faders or manually enter a gain value.

This gain stage adjusts the level of the signal before it reaches the matrix mixer. Mix the levels as high as possible without the loudest channel reaching the peak level 0 dB on the meter. Analog Sources Check the source level before it reaches the P, and set any analog device with adjustable output levels to a nominal level. Use each channel's fader to adjust the gain before it goes to the matrix mixer. Mobile Devices The mobile device input gain is optimized for most devices when the fader is set at 0 dB.

Set the input gain to 0 dB. Make a test call to verify the following: Can you clearly hear the far-end talker? Can the far-end talker clearly hear audio from the near end?

Muting any channel within the Mute group mutes all channels in the group. Fader Groups Check the Fader group box to add the channel to a group. All faders within the group are linked, and move together when a single fader is adjusted. Common equalizer applications: Improve speech intelligibility Reduce noise from HVAC systems or video projectors Reduce room irregularities Adjust frequency response for reinforcement systems Note: If you're connecting a microphone that has a built-in equalizer such as an MXA , disable any EQ on the mic and use the P's EQ instead.

Q Adjusts the range of frequencies affected by the filter. Width Adjusts the range of frequencies affected by the filter. Equalizer Applications Conferencing room acoustics vary based on room size, shape, and construction materials.

EQ Application Suggested Settings Treble boost for improved speech intelligibility Add a high shelf filter to boost frequencies greater than 1 kHz by dB. Reduce flutter echoes and sibilance Identify the specific frequency range that "excites" the room: Set a narrow Q value. Reduce the gain at the identified frequency start between -3 and -6 dB to minimize the unwanted room sound. Reduce hollow, resonant room sound Identify the specific frequency range that "excites" the room: Set a narrow Q value.

Adjusting Output Levels Tip: Set the output metering in the settings menu to ensure accurate metering. Pre- and Post-Gain Metering The 2 metering modes allow you to monitor signal levels before and after the gain stages. Input Metering Pre-gain : Displays the pre-fader signal level.

If signals are too low or clipping, adjust them at the source. Post-gain : Displays the post-fader signal level, so the meters reflect gain adjustments on input faders. This meter does not include automatic gain control or any other processing. Output Metering Pre-gain : Displays signal levels after input gain has been applied, but before the output faders.

This meter includes input faders, digital signal processing blocks, automixing, and crosspoint gain. Post-gain : Displays the post-fader signal level sent to each output.

This meter includes gain adjustments made on the output faders. Automix Modes Gating Gating mode delivers fast-acting, seamless channel gating and consistent perceived ambient sound levels. Gain Sharing Gain sharing mode dynamically balances system gain between open and closed channels. Manual Manual mode sums all active tracks and sends the summed signal over a single Dante output.

Automix Settings Note: Not all settings are available on all automixers. Leave Last Mic On Keeps the most recently used microphone channel active. Gating Sensitivity Changes the threshold of the level at which the gate is opened Off Attenuation Sets the level of signal reduction when a channel is not active Hold Time Sets the duration for which the channel remains open after the level drops below the gate threshold Maximum Open Channels Sets the maximum number of simultaneously active channels Priority When selected, this channel gate activates regardless of the number of maximum open channels.

Always On When selected, this channel will always be active. Send to Mix When selected, sends the channel to the automix channel. Solo Mutes all of the other channels Automix Gain Meter When enabled, changes gain meters to display automix gating in real time. Mic Optimization Mode P only Select the microphone that is used with the automixer for best performance.

Gate Inhibit P only Enable gate inhibit to prevent far-end audio from gating on near-end microphone channels. Make sure all input gain levels are properly adjusted and all other automixer settings are configured.

Disable Leave last mic on. Perform a test call with the far end to adjust the gate inhibit fader. Increase the fader level so that the far end indicator turns on, and far-end audio does not gate on the near-end automixer channels. Verify that near-end talkers still activate the automixer channels.

If the channels do not turn on, lower the gate inhibit fader. Re-enable Leave last mic on if necessary. Automixer Direct Out Tap Points In the Automixer tab, use the menus below each channel to choose where the signal to the matrix mixer should come from.

All options include input channel gain, mute, solo, and PEQ. Encryption Encryption operates at the room level, meaning that all devices included in the room must have these settings. To activate encryption: In a room, click Settings , located in the upper right. Select Audio encryption. Select Enable Encryption. Important: For encryption to work: Encryption must be universally enabled or disabled on all connected Shure devices in the same room.

AES67 must be disabled in Dante Controller to turn encryption on or off. AES67 encryption is currently not supported. Networking and Dante Networking Best Practices When connecting Shure devices to a network, use the following best practices: Always use a "star" network topology by connecting each device directly to the switch or router. Connect all Shure networked devices to the same network and set to the same subnet.

Allow all Shure software through the firewall on your computer. Use only 1 DHCP server per network. Disable DHCP addressing on additional servers.

To expand the network, use multiple switches in a star topology. All devices must be at the same firmware revision level. MAC Address The network interface's unique identification.

To configure the IP properties, follow these steps: Open device's configuration window. Go to the Settings tab and select Network. Select Auto or Manual.

If Auto is used, addresses will be automatically assigned. For Manual setup, follow the instructions on manual configuration. Select Manual as the Configure IP setting. Enter the IP settings. Digital Audio Networking Dante digital audio is carried over standard Ethernet and operates using standard internet protocols. Switch and Cable Recommendations for Dante Networking Switches and cables determine how well your audio network performs.

Network switches should have: Gigabit ports. EEE also known as "Green Ethernet" may cause audio dropouts and problems with clock synchronization. Setting Latency Latency is the amount of time for a signal to travel across the system to the outputs of a device. Use Audinate's Dante Controller software to change latency settings. Note: names appear in Dante Controller with "-d" attached.

AES67 AES67 is a networked audio standard that enables communication between hardware components which use different IP audio technologies. The following information is critical when transmitting or receiving AES67 signals: Update Dante Controller software to the newest available version to ensure the AES67 configuration tab appears. AES67 cannot operate when the transmit and receive devices both support Dante.

If you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug. No object should bring weight to bear on to the AC power cords. LIGHTNING — For added protection for the subwoofer or control module during a lightning storm, or when it is left unattended and unused for long periods of time, unplug them from the wall outlet.

This will prevent damage to the subwoofer or control module due to lightning and powerline surges. Never spill liquid of any kind on the subwoofer, control module or control module power supply. Refer all servicing to qualified service personnel. Substandard substitutions may result in fire, electric shock, or other hazards. SAFETY CHECK - Upon completion of any service or repairs to the subwoofer or control module, ask the service technician to perform safety checks to determine that the subwoofer or control module is in proper operating condition.

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