Related Manuals for Tenor 175S
Summary of Contents for Tenor 175S
- Page 1 Tenor 175S Ultimate Stereo Reference Amplifier Owner’s Manual Te nor I nc. Version: November 2008...
- Page 3 Important Safety Instructions Please read this Owner’s Manual for your own safety and the protection of your Tenor • equipment. Once you have installed your Tenor equipment, store this Owner’s Manual in a safe • place for future reference if necessary.
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Page 4: Table Of Contents
Design Principles ........................... 6 Precision Engineering & Assembly ..................... 6 Unpacking......................7 Lifting Caution – 148lbs (67Kg)!.....................7 Travel Cases..............................7 List of Items Included with pair of Tenor 175S ..............7 Moving Amplifier............................7 Installation ......................8 Considerations ............................8 Party Isolation Stands ........................8 Placement..............................8... - Page 5 AC Mains On/Off & Fuse .........................16 Remote Turn On Jack........................16 Single Ended and Balanced Inputs.................... 17 Loudspeaker Binding Posts ......................17 175S Internal View..........................17 Troubleshooting & Protection Circuitry Overview........18 Internal Fuses Associated With Protection Circuitry........... 18 Other Internal Fuses........................... 18 Example Protection Scenarios .....................
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Page 6: Introduction
This Owner’s Manual is provided to assist in the unpacking, installation and ongoing care of your Tenor 175S amplifier. It is recommended that you take a few minutes to acquaint yourself with the contents of this manual before you unpack further so that you are safe and the amplifier is handled correctly. -
Page 7: Unpacking
Caution should be used in lifting the amplifier upwards out of the lower portion of the travel case to make sure that nothing scratches the beautiful Tenor finish. It is recommended that the travel case and amplifier be positioned close to its final loca- tion using the wheels of the travel case if necessary. -
Page 8: Installation
Installation Considerations The Tenor amplifier needs to be located in a clean, safe and dry environment within close proximity to AC power mains. Placement on the floor close to your speakers is an ideal location as long as the amplifier is not in people’s way. Always consider... -
Page 9: Source Components
Speakers should be connected with respect for polarity whereby the positive (+) or red output of the Tenor is attached to the same of the speaker. Similarly the nega- tive (-) or white of the Tenor should be attached to the negative (-) or black of the speaker. -
Page 10: Power Requirements
When set to the “on” position, this switch operates the relays pro- viding power to the Tenor 175S. The lens in the front panel will glow red identifying the Tenor 175S is now in “mute” for the 3-minute warm-up and stabilization period. -
Page 11: Break-In Period
The Tenor 175S is designed to operate within design specifications for a period close to 10,000 hours. As a typical example, a Tenor 175S used each and every day for 3 hours under normal use will last almost 10 years before it will need a tube refit and calibration. -
Page 12: Special Design Features
Tenor 175S is the ultimate in resolution and transparency in a single chassis design. The first stage of the 175S design is based on the original all tube OTL (Output Trans- former-Less) proprietary concept pioneered by Tenor in the late 1990’s. This all tube stage provides 10 watts per channel of pure Class A voltage at a relatively high im- pedance (by speaker standards) which is ideal input for a bank of mosfet transistors. -
Page 13: Environmental Considerations
If the am- plifier fault has not been cleared, it will immediately return to the muted state and the lens will continue to be red. Please consult the Tenor factory for further details. Environmental Considerations Considerable effort went into the efficiency of the Tenor 175S and its power con- sumption. -
Page 14: Front Panel
On/Off Switch There are 2 on/off switches on the Tenor 175S amplifier. If the rear master switch is in the on position, one can power the amplifier on and off using the secondary rocker switch located below the front panel slightly to the right of center. If the rear mas-... -
Page 15: Front Lens - Indicator Light
Front Lens – Indicator Light The lens on the front panel is an indicator light that is dark (i.e. not lit), red or blue and, in the event of a fault, blue will change to red in 1-second increments. Dark means that the amplifier is either not on or there is no power provided to the amplifier. -
Page 16: Rear Panel & Internal View
Rear Panel & Internal View Cautions AC Mains On/Off & Fuse Remote Turn On Jack... -
Page 17: Single Ended And Balanced Inputs
Single Ended and Balanced Loudspeaker Binding Posts Inputs 175S Internal View... -
Page 18: Troubleshooting & Protection Circuitry Overview
6. 200 milliAmps SB (TR5) @ –125 volt fuse to Power Supply Board (F4) Special Note: None of these fuses are user replaceable – all require Tenor Service! During the initial 3-minutes warm-up, the amplifier will monitor the above fuses as well as the temperature of the heat sinks. -
Page 19: Example Protection Scenarios
2, 3 and 4 can be remedied by simply allowing the amplifier to cool down by powering off for a sufficient period of time. Failure of condition 1 requires Tenor Service! No Audio + Front Panel Lens Light is Blue When there is no audio and the front panel lens light is blue suggests that the input, RCA or Balanced XLR and/or the speaker cables are not connected properly. -
Page 20: No Audio + Front Panel Lens Light Is Red (Flashing)
Ideally for the best sound the 175S chassis should be plugged into its own circuit and all other components should be plugged into a separate circuit but this also has the greatest potential for ground hum. -
Page 21: Care And Maintenance
Audio Board (Vacuum Tubes) The Audio Board is home to all of the Vacuum Tubes in the Tenor 175S. Every tube is matched and calibrated in the circuit so unless you are specifically directed by Tenor to alter these tubes they should never be touched except by trained Tenor service technicians. -
Page 22: Tenor 175S Specifications
Shipping weight in custom road case ......148 lbs / 67.2 kg Dimensions ............19.5” W x 28” D x 9.5” H * : @ 8 Ohm, 1kHz **: Outside signal path Tenor Inc. reserves the right to make improvements which may result in specification changes without notice August 2008... -
Page 23: Warranty
Warranty Tenor Inc. Canada warrants the Tenor 175S to be free from defects in materials or workmanship for a period of 5 years from the date of the original purchase provided the amplifier is registered with Tenor Inc. Canada within 90 days of the purchase date and there is valid proof of purchase from an authorized Tenor Inc. -
Page 24: Product Registration
To ensure your amplifier is covered by the Tenor Inc. 5 year warranty, it is mandatory that you register with Tenor Inc. by mail or email within 90 days of purchase and pro- vide us with all of the following information:... -
Page 25: Tenor Contact Information
Before returning your amplifier to Tenor Inc., it is necessary to receive a Return Authorization Number (RAN) as stated in Warranty Conditions. A RAN will be issed by contacting Tenor Inc. and describing the nature of your service request using either email or phone as follows: Tenor Inc. -
Page 26: Owner's Notes
Owner’s Notes...
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