User manual SUMMIT TLA-100A

[. . . ] Before powering the unit read this manual, observing the cautions for HIGH VOLTAGE. Proceed by doing the following : · Check the line voltage switch. · Determine the proper fuse size by referring to the specifications. · Check for meter illumination and the pilot lamp when the unit is powered up. [. . . ] Plug the send (tip) of the insert cable to the input of an EQ, and the return (ring) of the cable to the EQ output. Boost the frequencies on the EQ that you want to compress (de-ess). DUCKING Send the output of the "lead" program material into the side chain input after inserting the TLA-100A on the "background" program material. Example: Send the output of a vocal mic into the side chain, with the TLA100A inserted on the lead guitar track. As the singer uses the vocal mic, the lead guitar will decrease in amplitude. CIRCUIT EXPLANATION The TLA-100A features a vacuum tube amplifier driving an electronically balanced 990 output stage. All the signal amplification in the audio path takes place in the tube circuit. The 990 amplifiers provide a low output impedance for driving cables and 600 loads. The 990 is a high performance op amp made of discrete parts, and then potted for thermal stability. The input is electronically balanced, and directly feeds the unique compression cell. The SIDE CHAIN allows for stereo coupling, or the insertion of an equalizer. Due to the combination of tube and solid state circuitry long term drift of the compression circuit is minimal and tracking of two TLA-100As stereo linked is within . 3dB. 5 ELECTRICAL CONNECTIONS INPUT: (This TLA-100A is wired as a pin 2 hot device. Units made before March 1st, 2003 come factory wired with pin 3 hot. ) Unbalanced: 3 pin XLR Connector Pin 1 ­ Ground Pin 2 ­ (+) Signal Pin 3 ­ Connect to Pin 1 Balanced: 3 pin XLR Connector Pin 1 ­ Ground Pin 2 ­ (+) Signal Pin 3 ­ (-) Signal OUTPUT: Unbalanced: 3 pin XLR Connector Pin 1 ­ Ground Pin 2 ­ (+) Signal Pin 3 ­ Connect to Pin 1 Balanced: 3 pin XLR Connector Pin 1 ­ Ground Pin 2 ­ (+) Signal Pin 3 ­ (-) Signal SIDE CHAIN: Tip ­ Signal output (to EQ) Ring ­ Signal input (from EQ) Sleeve - Ground Set the rear panel switch for the proper position. STEREO LINK: Tip ­ Signal Sleeve ­ Ground Use the shielded patch cord with ¼" plug Note: When running an unbalanced output it is best to connect pin 3 to pin 1 in the connector that plugs into the TLA-100A. The TLA-100A contains heat generating devices, ample ventilation needs to be provided. Good ventilation will give long, trouble free operation. THINK TUBES!!SPECIFICATIONS 6 OUTPUT : +4dBm corresponds to 0 VU. The output is electronically balance or unbalanced using 990 operational amplifiers. The recommended output load is 600 or more. The input is electronically balanced or unbalanced. Standard 19" by 3. 5" (two units of rack space). INPUT: PANEL SIZE: DEPTH BEHIND PANEL:10. 5" in addition to users I/O cabling. POWER: 35 watts. Fuse size is . 5 amp for 115 volt and . 25 amp for 230 Volt. 1 x 12AX7A Vacuum Tube 2 x high reliability 990 operational amplifiers 13 x integrated circuits 3 x transistors 1 x compression cell 16 Lbs. COMPONENTS: SHIPPING WEIGHT: To operate this unit on 115 volts, switch the line voltage selector on the back of the unit to read 115 volts and confirm that the external fuse (mounted in chassis) is a [3 AG ½ Amp slow blow]. To operate this unit on 230 volts, switch the line voltage selector on the back of the unit to read 230 volts and confirm that the external fuse (mounted in chassis) is a [3 AG ¼ Amp slow blow]. 7 OPERATION The first step in the operation of any device using a vacuum tube is to apply power and let the unit fully warm up (15 minutes). After warm up, set the Gain Reduction control to 0 and adjust the Gain control for 0 VU on the meter. [. . . ] For the longest life, it is recommended that you turn off the unit when it is not in use. Please mount the unit in your rack, making sure that there is sufficient ventilation, especially on the right and left side of the chassis. The TLA-100A will generate a significant amount of heat; therefore, it is necessary to have good air flow to prevent damage to your TLA-100A or any other pieces of gear housed in the rack with it. The tubes in your Summit Audio TLA-100A have been intensely screened for desired distortion and gain characteristics. [. . . ]