User Manual Please read the instructions in this manual before using the Duet Please refer to our website www.phnxaudio.com for more information, specifically to our Q&A section in our Support page. For additional help please send a detailed e-mail to Support@phnxaudio.com -1– Phoenix Audio Technologies www.phnxaudio.
Table of Contents 1. Introduction………………………………………………………………………….3 2. Key Elements………………………………………………………………………..4 3. Key Features………………………………………………………………………...5 4. Control Panel / Volume Adjustment ……………………………………………6 Setting Audio Levels Through the PC ………………………………………...….7 External Speaker / Headphone Connection ……………………………………..8 5. Computer (USB) Connection……………………………………………….…....9 6. Duet PCS………………………………………………………………………….…10 7. Duet VCA ……………………………………………………………………….…..12 8. Duet Executive………………………………………….
1. Introduction The Duet is a high quality speakerphone for desktop use in a small to medium room setting. It has an impressive pickup and broadcasting range for its size and is remarkably portable. The Duet utilizes a high quality microphone, speaker, and a powerful DSP to obtain its performance. The Duet microphone is multidirectional and it picks up voices in a 360 degree radius. The Duet product line consists of three different versions of the Duet.
2. Key Elements control button panel speaker back panel (can not be seen in picture) microphone -4– Phoenix Audio Technologies www.phnxaudio.
3. Key Features - By default, the Duet utilizes its internal microphone and loudspeaker providing high quality, headset-free hands-free communication. - The Duet has a 3.5mm stereo jack for external loudspeakers or headphones. Connecting your loudspeakers to the Duet will automatically disable the internal loudspeaker - The Duet is powered through the USB port and does not need an additional power supply. -5– Phoenix Audio Technologies www.phnxaudio.
4. Control Panel / Volume Adjustment The Duet has only three control buttons: - (1) Volume Up (2) (3) (1) - (2) Volume Down - (3) Mute When the Duet is powered, a blue light will illuminate through the buttons on top of the unit, indicating that the unit is on and operating. Push the “mute” button (the middle button with the microphone icon) and the light will start to blink, signaling that the unit is in “mute mode”.
A prolonged push on the volume buttons will increase and decrease the volume by several levels, until you release the button or the maximum / minimum volume level has been reached. The Duet will make a beep sound when the volume up and volume down buttons are pushed and a series of beeps when a prolonged push is performed (each beep signals one level of volume level increase / decrease). When the volume reached the maximum or minimum step no more beeps will be sound.
setting of the output and input level, will let you “hear” your settings and will test the integrity and the performance of the Duet. This tool allows you to send your test results by email to our support team. These two tools are available for free on our website www.phnxaudio.com under the Support tab. Duet Executive Note: the computer mixer settings will only affect the sound level when engaging in communication through your computer.
5. Computer (USB) Connection Plug the supplied USB cable into the Duet on one side and into your computer’s USB port on the other side. The Duet will turn on (powered by the USB), enumerate as a PhnxMT202 device (AK4571 in older models) and start working. Note: the Duet will be set as both your audio input device (microphone) and audio output device (speaker). You may want to set up the playback and recoding level for optimum results.
6. Duet PCS The Duet PCS is a desktop speakerphone designed for hands free Voice over IP (VoIP) communication through your computer’s USB port. Included with the Duet PCS: o One 6’ USB (mini B to A) cable. This cable will connect the Duet to your computer for VoIP audio input and output. This cable is all you need in order to operate and use the Duet with VoIP applications. The Duet is powered by this cord and does not need an additional power supply in order to operate.
1 2 BACK PANEL VIEW 1 - 3.5mm stereo headphones / external speaker connector 2 - USB connector - 11 – Phoenix Audio Technologies www.phnxaudio.
7. Duet VCA The Duet VCA is a high quality satellite speakerphone for your Video Codec system. It can also act as a high quality desktop speakerphone for your Voice over IP (VoIP) communications. Included with the Duet VCA: o One 6’ USB (mini B to A) cable. This cable will connect the Duet to your computer for VoIP audio input and output. This cable is all you need in order to operate and use the Duet with VoIP applications.
Connectivity: The Duet VCA can connect to a PC through a USB connection and to a Video Codec system through two RCA jacks. 2 1 4 3 BACK PANEL VIEW 1 - 3.5mm stereo headphones / external speaker connector 2 - RCA jacks (red jack on left is output, black jack on right is input) 3 - Output gain switch 4 - USB connector - 13 – Phoenix Audio Technologies www.phnxaudio.
Computer (USB) Connection: Please refer to section 5 of the manual in order to learn how to use the USB connection. VC System Connection: Connect your VC system’s speaker output to the Duet’s speaker input (black RCA on the right). If you prefer to use the VC’s external speakers, please refer to the next paragraph. Please note that you still have to connect the speakers’ signal to the Duet in order for the Duet’s echo canceling software to perform properly.
Connecting External Speakers: The Duet is equipped with a 3.5mm stereo External Speaker / Headphone jack. Connecting your loudspeakers (or headphones) to the Duet will disable the Duet’s internal speaker. Your computer’s audio (music, VoIP communications, etc) will be passed through to the external speakers. You can connect your VC system directly to the external speaker and avoid running a wire from the 3.5mm jack to your speakers.
Splitting the speaker output and disabling the Duet’s internal speaker Video Codec System Speaker Outputs 3.5mm Dummy Plug - 16 – Phoenix Audio Technologies www.phnxaudio.
Setting the Duet’s output gain: The output gain switch (triple switch in the middle of the back panel) controls the level of the output signal. It does not affect the USB signal level nor does it affect the input signal level (speakers signal). Different VC systems expect a different input signal level. Consult with the VC provider for the level specific to your system and use the table below to set the optimal switch position.
8. Duet Executive The Duet Executive is a high quality speakerphone for your Voice over IP (VoIP) and your telephone/cellular phone communications. It can be used as a stand alone unit on a desktop as well as a conferencing solution when daisy chained with other Duet Executives. Included with the Duet Executive: o One 6’ USB (mini B to A) cable. This cable will connect the Duet to your computer for VoIP audio input and output.
o Two 6’ RJ11 (4 position 4 contacts) to RJ11 cable (same connectors as your telephone handset). These cables will connect your Duet to a telephone that is equipped with a standard RJ11 type Headset connector (typically IP telephones)*. These two cables are different. Some telephones will work with one of the cables and some with the other. o One 6’ RJ11 (4 position 4 contacts) to 2.5mm cable. This cable will connect your Duet to a telephone (or cellular phone) that is equipped with a standard 2.
- - A 2.5mm headset jack, allowing you to use a standard telephone headset and conduct a private conversation. Connecting the headset to the Duet will automatically disable both the Duet’s internal microphone and internal speaker. It will also disable the echo canceling algorithm allowing for “self hearing” (side tone). Connectivity: The Duet Executive can connect to a PC through a USB connection and to a telephone / cellular phone device.
2 - 3.5mm stereo headphones / external speaker connector 3 - Telephone jack (RJ11) 4 - Output gain switch 5 - USB connector Computer (USB) Connection: Please refer to section 5 of the manual in order to learn how to use the USB connection. Telephone connection: The Duet can connect to most telephones / IP telephones / cellular phones through the device’s headset connection. Typically, IP phones have an RJ11 type jack for the headset connection. Most other phones have a 2.5mm jack for the headset connection.
Note: Some cellular phones are equipped with a stereo 3.5mm headset jack (3 band). In order to use the Duet with these telephones you must purchase an adaptor with a 2 band 2.5mm female jack and a stereo 3-band 3.5mm plug (four contacts). Note: There are two cables with RJ11 connectors on both sides (one grey and one black). The black cable works with some IP telephones, while the grey cable works with others. If you connected one and do not hear a dial-tone please try the other one.
Setting up the telephone’s output gain: The Duet Executive has a two-slide, four-position input gain switch that controls the level (sensitivity) of the Duet’s output audio signal going into your telephone. If the gain is set too high, the telephone input will clip the signal and the Duet will fail to cancel the “line echo”. As a result you may hear an echo returning when you speak. If the gain is set too low, the other side may have trouble hearing you or won’t be able to hear you at all.
Note: when connecting the Duet Executive to external speakers, as described in section 4, the Executive will also send your telephone’s audio to the external speaker (or headphones). While the internal Duet speaker is disabled when using this connection, the Duet’s internal microphone is still functional. This feature is useful if, for example, you listen to music stored on your computer while wearing headphones and the telephone rings. You can pickup the call without taking the headphones off.
Daisy chaining (ganging) Duet Executives: The Duet Executive is unique in that it is the only Duet model that can be daisy chained. Any number of Executives can be connected in a row as long as all the units are of the Executive model. This feature allows the use of multiple Duets to cover medium or even large conference rooms. Every unit in the chain will utilize both its microphone and speaker, allowing people down the chain not only to be heard but also to hear.
3) Plug the Dummy Plug into Duet #1's 3.5mm jack. 4) Set the output gain switches to their lower position (0 dB gain). 5) Power Duet #2 using the supplied power adaptor (you can also power it from a USB port) Note: Plugging the Dummy Plug signals to the Duet that it is in a Daisy Chain mode and activates all the required algorithms. Failing to do so will disable the echo canceling algorithm and other critical functions. Note: Phoenix offers a set of 11 foot RJ11 -> 2.
