Summary of Contents for API Select T25
- Page 1 T25 Tube Compressor OPERATOR’S MANUAL Written for Automated Processes Incorporated by Dan Pfeifer Rev. 21-04-26...
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Page 2: Table Of Contents
Table of Contents About This Manual ..................1 1.0 Introduction ..................3 1.1 Features ..................... 3 2.0 Quick Start .................... 4 3.0 Overview ....................5 4.0 Compressor Controls ................6 4.1 Attack Time ....................6 4.2 Release Time ....................6 4.3 Ratio ...................... -
Page 3: About This Manual
About This Manual This manual explains the operation and applications of the API Select T25 Tube Compressor. This manual is organized in sections that correspond to the front panel controls and rear panel interface. Legend: • UPPER-CASE BOLD = POTS, CONTROLS, SWITCHES, BUTTONS •... - Page 4 (this may include music) for a period of time. Be safe. WARNING – To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. T25 Tube Compressor API Select...
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Page 5: Introduction
• Full hard-wired relay bypass • XLR and ¼” TRS input and output connections The T25 Tube Compressor has several unique features that will allow you to tailor the sound of the compression in many different directions. The patented THRUST inserts a filter in front of the RMS detector that evens out the energy by lowering ®... -
Page 6: Quick Start
10 seconds that is allowed during a setup. If you simply set all of the parameters as follows the T25 will have a useful, but conservative effect on the signal. -
Page 7: Overview
3.0 Overview The T25 Tube Compressor provides a comprehensive suite of controls: • ATTACK: Sets the time it takes the compressor to respond after levels rise above threshold • RELEASE: Sets the time it takes the compressor to return to unity gain after levels fall below threshold •... -
Page 8: Compressor Controls
4.0 Compressor Controls Each channel of the T25 is equipped with a comprehensive set of compression parameters. 4.1 Attack Time ATTACK: Sets the time it takes the compressor to react when levels exceed the THRESHOLD • 20µS to .8mS range •... -
Page 9: Side-Chain And Routing Controls
5.0 Side-Chain and Routing Controls The T25 Tube Compressor is equipped with a flexible set of side-chain processes and routing controls. THRUST Frequency-dependent side-chain processing includes a de-esser and the patented ® filter that helps you get more punch from audio with heavy low-frequency content. These features provide increased control of the tonal characteristics and envelope shaping the compression applies to the audio. -
Page 10: In/Out Switch
NOTE: When the T25 is powered off, BYP is engaged allowing audio to pass directly through the device. This allows the T25 to be powered off when not in use in order to prolong tube life. 5.5 Stereo Link Switch The channels 1 and 2 of the T25 Tube Compressor function can be linked together for stereo operation. -
Page 11: Level Indication
6.0 Level Indication Each channel of the T25 Tube Compressor is equipped with a LED gain reduction meter, a peak indicator, and output level VU meter for level indication. 6.1 Gain Reduction Meter & Peak Indicator GR (Gain Reduction): Indicates the amount of gain reduction in decibels (dB) •... -
Page 12: Power Switch & Rear Panel Connections
8.0 Power Switch & Rear Panel Connections 8.1 Power Switch The power switch for the T25 Tube Compressor is located on the right side of the front panel. Power: Toggle to power the T25 ON and off NOTE: The T25 is a tube-based processor that requires 15 minutes for the tubes to warm-up to a stable temperature before tonal qualities become consistent. -
Page 13: Appendix
APPENDIX A1 Specifications A2 Block Diagram A3 Recall Chart A4 User Accessible Maintenance A5 API Limited Warranty and Service T25 Tube Compressor API Select... -
Page 14: A1 Technical Specifications
• Power Consumption: 45W • Size: 19” x 3.5” x 12” Deep • Size (Boxed for Shipping): 21” x 9” x 15” • Actual Weight: 14 lbs. • Shipping Weight: 17 lbs. A2 Block Diagram T25 Tube Compressor API Select... -
Page 15: A3 Recall Chart
A3 Recall Chart T25 Tube Compressor API Select... -
Page 16: A4 User Accessible Maintenance
A4 User Accessible Maintenance A4.1 Tube Replacement The T25 Tube Compressor features 12AT7WC and 12BH7 dual-triode vacuum tubes in each channel. The factory installed tubes are selected at API for optimal performance. All tubes are socketed and can be replaced if required. -
Page 17: A5 Api Limited Warranty And Service Information
SPECIAL, OR CONSEQUENTIAL DAMAGES THAT MAY RESULT FROM ANY DEFECT IN THE API PRODUCT OR ANY WARRANTY CLAIM. i) This warranty provides specific legal rights and you may have other rights, which vary from state to state. T25 Tube Compressor API Select... - Page 18 ©2021 8301 Patuxent Range Road Jessup, MD 20794 USA 301-776-7879 http://www.apiaudio.com...
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