User manual SAMSON SPHONE

[. . . ] Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or third prong is provided for your safety. [. . . ] 8 RACK EARS - Used for mounting into a standard 19 inch rack. 9 MASTER INJECT - Stereo TRS front panel input for injecting a signal into the main mix. 10 MUTE SWITCH - Used for muting the signal on the individual channels. 2 3 4 REAR PANEL LAYOUT A B C D E MINIMUM IMPEDANCE 8 OHMS MADE IN CHINA MINIMUM IMPEDANCE 8 OHMS MINIMUM IMPEDANCE 8 OHMS CHANNEL 4 OUTPUTS CHANNEL 3 OUTPUTS CHANNEL 2 OUTPUTS HEADPHONE MIXER/AMP A AC INLET - IEC standard AC power cable connector with external fuse. CHANNEL 4 OUTPUTS - 2 rear panel headphone outputs for Channel 4. CHANNEL 3 OUTPUTS - 2 rear panel headphone outputs for Channel 3. D CHANNEL 2 OUTPUTS - 2 rear panel headphone outputs for Channel 2. B C 4 Controls and Functions 5 CHANNEL LEVEL dB -30 -24 -18 -12 -6 -3 0 CLIP 4 6 CHANNEL 3 0 4 5 CHANNEL LEVEL dB -30 -24 -18 -12 -6 -3 0 CLIP 4 7 CHANNEL 4 0 4 5 8 POWER 8 MUTE / ON ST / 2CH 8 8 MUTE / ON ST / 2CH 8 E 10 12 4 HF 12 4 0 VOLUME 10 12 4 HF 12 4 0 VOLUME 10 8 8 8 8 R MAIN 12 PHONES AUX IN LF 12 L AUX R PAN MAIN 12 PHONES AUX IN LF 12 L AUX R PAN MAIN 11 HEADPHONE OUTPUT - A front panel headphone output for each channel. 12 ST/2CH SWITCH - Switches between stereo and 2 channel modes. 13 AUX IN - Used to inject a "MORE ME" signal into the individual amp channels. 14 HIGH FREQUENCY EQ - Controls the amount of high frequency EQ applied to headphone output. 15 LOW FREQUENCY EQ - Controls the amount of low frequency EQ applied to headphone output. 16 VOLUME CONTROL - Controls the volume to the headphone output for the individual channel. 17 PAN CONTROL - Controls the balance from left to right in stereo mode and from aux to main mode. E F G S MINIMUM IMPEDANCE 8 OHMS LEFT MONO CHANNEL 1 OUTPUTS LINK OUTPUT LEFT RIGHT MAIN INPUT LEFT RIGHT E CHANNEL 1 OUTPUTS - 2 rear panel headphone outputs for Channel 1. LINK OUTPUTS - Outputs that are tied to the main input for linking to another headphone amp or other device. MAIN INPUT - The main signal input to the headphone amp. Plugging into the left jack only sends the signal to both the left and right. 5 F G Operating the S·phone SETTING UP THE S·phone Setting up your S·phone Headphone Amplifier is a simple procedure, which takes only a few minutes. Remove all packing materials (save them in case of need for future service) and plug the provided AC power cord in the rear AC inlet, but don't plug the power cable into a wall outlet just yet. · Connect the output from the device you want monitored to the Left/Right MAIN INPUT jacks on the S·phone rear panel. The S·phone accepts both balanced and unbalanced signal. Generally, a balanced signal is preferable because it provides better signal-to-noise ratio and reduced extraneous noise. Conversely, if you find that you have to raise one or more headphone Channel Volume knobs to maximum or near maximum to achieve the desired level, try increasing the Master Volume Level while decreasing the channel volume(s). · S · Phone Master Section 1 Master Volume The S phone's MASTER VOLUME control is used to adjust the input signal connected to the MAIN Left and Right inputs. In addition, the MASTER VOLUME control adjusts the level of the signal inserted in the MASTER INJECT, which is summed with the MAIN Left and Right input signal. MASTER LEVEL dB -30 -24 -18 -12 -6 0 +6 2 CLIP 5 2 Master Level meter The S·phone's maser section includes an 8 segment LED LEVEL meter which monitors the input level of the MAIN Left and Right Inputs in Decibels (dBs) from ­30 to CLIP. If the LEVEL meter displays a CLIP signal, then turn down the signal being sent into the MAIN left and Right. HEADPHONE MIXER/AMP OFF AUX 10 MAIN 1 MASTER VOLUME INJECT 3 3 Using the Master Inject The S·phone's MASTER INJECT is a TRS input (Tip, Ring, Sleeve) that allows a second stereo signal to be inserted and summed together with the MAIN Left and Right signals. You can use a stereo signal from your mixers buss outputs or auxiliary sends to balance the mix between two stereo signals like rhythm tracks and vocals. 7 Operating the S·phone S · PHONE CHANNELS 1 Headphone Output The S·phone's Headphone Output jack accepts a standard 1/4" TRS connector for easy interface with most professional headphones. [. . . ] Samson Technologies has no connection with any of these manufacturers, nor do we endorse any particular models for use with the S·phone. This is simply a reference listing for your convenience. For more information about any of these headphones, contact the manufacturer directly. SAMSON HEADPHONES Model Impedance PH60 RH100 RH300 RH600 CH70 CH700 Sensitivity OTHER MANUFACTURER'S HEADPHONES Manufacturer Model Impedance AKG K-141 600 ohm AKG K-240 600 ohm Beyer DT-150 250 ohm Beyer DT-801 250 ohm Fostex T-10 50 ohm Fostex T-20 50 ohm Fostex T-40 50 ohm Sennheiser HD-450 (original) 70 ohm Sennheiser HD-450 Series II 60 ohm Sony MDR-7502 45 ohm Sony MDR-7504 45 ohm Sony MDR-7506 63 ohm Sensitivity 98 dB 88 dB 114 dB 114 dB 91 dB 96 dB 98 dB 94 dB 94 dB 100 dB 103 dB 106 dB 13 S·phone Wiring Guide Unbalanced 1/4" Connector Signal Signal Tip (signal) Ground Ground Sleeve (ground) Balanced TRS 1/4" Connector Signal (ring) Tip (signal) Ring (signal) Signal (tip) Signal (tip) Signal (ring) Ground Ground Sleeve (ground) Insert Cable 1/4" TRS connector to two 1/4" can be used to connect a stereo signal to the Channel AUX or Master Inject. Tip (send) Sleeve (common) Sleeve (ground) Send (tip) Return (ring) Tip (send) Ring (return) Send (tip) Return (ring) Common Common Sleeve (common) Sleeve (common) Tip (return) XLR Balanced Wiring Guide Hot Common Common (1) Hot (2) 1 3 2 2 3 1 Solder Points Cold End View Female XLR Cold (3) Hot (2) Common (1) Common Hot 1 3 2 2 3 1 End View Solder Points Cold (3) Cold Male XLR 14 Specifications Master Section (Rear Panel) Input Impedance Max. input level CMRR: Master Section (Front Panel) Master Volume control Master Level Meters Master Inject Link Output Connectors Max Output Level Channels AUX IN Connectors Impedance Max. [. . . ]