TBL1S - Unspecified Bogen - Free user manual and instructions

Product Type	Transformer Balanced Line Input Module
Brand	Bogen
Model	TBL1S
Input Type	Transformer-balanced line level
Input Impedance	Selectable 600 Ω or 10 kΩ
Gain Control	Adjustable
Bass Control	±10 dB at 100 Hz
Treble Control	±10 dB at 10 kHz
Gating	Yes, with adjustable threshold and duration
Ducking	Variable signal ducking when muted
Priority Levels	4 (1 highest, 4 lowest) via jumper selection
Bus Assignment	A bus, B bus, or both
Connector Type	Pluggable screw terminal strip
Power Supply	Powered by main unit
Installation	Slide-in module bay, secured with included screws
Dimensions (approx.)	1.5" H x 5.25" W x 8" D
Weight (approx.)	0.5 lbs
Operating Temperature	0°C to 40°C (typical)
Compatibility	Bogen amplifier systems with module bays
Safety	Turn off power before installation; handle with care
Maintenance	Clean with dry cloth; avoid moisture
Spare Parts / Repairability	Contact Bogen for service and replacement parts

Frequently Asked Questions - TBL1S Bogen

How do I set the priority level on the TBL1S?

Priority is set via jumpers on the module. Remove all jumpers for no mute. For Priority 1 (highest), install jumper on the '1' position. Priority 2 mutes lower priorities and is muted by priority 1, etc. Priority 4 is muted by all higher priorities. The number of available priority levels depends on the amplifier.

How do I wire a balanced input to the TBL1S?

Connect the shield wire to the G terminal. Connect the positive signal lead to the + terminal and the negative lead to the - terminal. If polarity is critical, you may need to reverse the + and - connections.

How do I wire an unbalanced input to the TBL1S?

Short the - terminal to G (ground). Connect the signal shield to G and the signal hot wire to +. Keep unbalanced connections as short as possible for best noise immunity.

What is gating and how do I adjust it?

Gating turns off the module's output when the input signal falls below a set threshold. Use the Gate - Threshold control to set the signal level needed to activate output. Turn clockwise to require a stronger signal. The Gate - Duration control sets how long the output stays on after the signal drops below threshold.

What does the ducking control do?

The Ducking (Duck) control adjusts the module's output level when it is muted or gated. It can reduce the output from no reduction to full muting, allowing a smooth fade back from mute.

How do I assign the module to a bus?

Use the Bus Assignment jumper to select whether the mono signal is sent to the A bus, B bus, or both buses. The available options depend on the main unit's design.

What is the impedance selector for?

The Impedance Selector sets the module's input impedance. Use the 600 Ω setting when connecting to a 600-ohm source for proper matching. Use the 10 kΩ setting for typical source equipment.

How do I install the TBL1S module?

Turn off all power to the unit. Make all necessary jumper selections. Position the module right-side up in front of an empty bay, slide it onto the card guide rails until the faceplate contacts the chassis, then secure it with the two included screws.

How do I adjust the bass and treble controls?

The Bass control provides ±10 dB at 100 Hz. Turn clockwise for boost, counterclockwise for cut. The Treble (Treb) control provides ±10 dB at 10 kHz. Center position gives flat response.

Can I disable gating on the TBL1S?

Yes, gating can be disabled via a jumper. When disabled, the module's output remains on even without input audio, though detection for muting lower priority modules remains active regardless.

USER MANUAL TBL1S Bogen

TBL1S

Transformer Balanced Line Input Module

Features

• Transformer-isolated line level input
- Gain/Trim control
- Bass and treble
- Audio Gating
• Gating with threshold and duration adjustments
• Variable signal ducking when muted
- Fade back from mute
• 4 levels of available priority
- Can be muted from higher priority modules
- Can mute lower priority modules
- Pluggable screw terminal strip

Module Installation

1. Turn off all power to the unit.
2. Make all necessary jumper selections.
3. Position module in front of any desired module bay opening, making sure that the module is right-side up.
4. Slide module on to card guide rails. Make sure that both the top and bottom guides are engaged.
5. Push the module in to the bay until the faceplate contacts the unit's chassis.
6. Use the two screws included to secure the module to the unit.

WARNING:

Turn off power to unit and make all jumper selections before installing module in unit.

Jumper Selections

Priority Level*

This module can respond to 4 different levels of priority. Priority 1 is the highest priority. It mutes modules with lower priorities and is never muted. Priority 2 can be muted by Priority 1 modules and can mute modules set for Priority Level 3 or 4. Priority 3 can be muted by either Priority 1 or 2 modules and can mute Priority 4 modules. Priority 4 modules are muted by all higher priority modules. Remove all jumpers for "no mute" setting.

* The number of priority levels available is determined by the amplifier the modules are used in.

Gating

Gating (turning off) of the modules output when insufficient audio is present at the input can be disabled. Detection of audio for the purpose of muting lower priority modules is always active regardless of this jumper setting.

Bus Assignment

This module can be set to operate so that the mono signal can be sent to the main unit's A bus, B bus, or both buses.

Impedance Selector

This module can be set for two different input impedances. When connecting to a 600-ohm source, it is desirable to have a 600-ohm matching input impedance. For typical source equipment, use the 10k-ohm setting.

Gate - Threshold (Thresh)

Controls the amount of input signal level necessary to turn the module's signal output on and mute lower priority modules. Clockwise rotation increases the necessary input signal level required to produce audio output and mute lower priority modules.

Ducking (Duck)

Controls the module's output level when the module is muted or gated. The range is adjustable from no reduction in level to full muting of the output signal.

Gain

Provides control over the level of input signal that can be applied to the internal signal buses of the main unit. Allows a way to balance the input levels of various devices so that the main unit controls can be set to relatively uniform or optimum levels.

Gate - Duration (Dur)

Controls the amount of time the signal output and priority muting of the module remains applied to the main unit's buses after the input signal falls below the required minimum signal level (set by the threshold control).

Treble (Treb)

The Treble control provides +/- 10 dB at 10 kHz. Clockwise rotation provides boost; counterclockwise rotation provides cut. Center position provides no effect.

Bass

The Bass control provides +/- 10 dB at 100 Hz. Clockwise rotation provides boost; counterclockwise rotation provides cut. Center position provides no effect.

Balanced Input

Transformer balanced, line-level input on pluggable screw terminal strip.

Block Diagram

Input Wiring

Balanced Connection

Use this wiring when the source equipment supplies a balanced, 3-wire output signal.

Connect the shield wire of the source signal to the "G" terminal of the input. If the "+" signal lead of the source can be identified, connect it to the plus “+” terminal of the input. If the source lead polarity cannot be identified, connect either of the hot leads to the plus “+” terminal. Connect the remaining lead to the minus “-” terminal of the input.

Note: If polarity of the output signal versus the input signal is important, it may be necessary to reverse input lead connections.

Unbalanced Connection

When the source device provides only an unbalanced output (signal and ground), the input module should be wired with the "-" input shorted to ground (G). The unbalanced signal's shield wire is connected to the input module's ground and the signal hot wire is connected to the "+" terminal. Since unbalanced connections do not provide the same amount of noise immunity that a balanced connection does, the connection distances should be made as short as possible.

BOGEN®

COMMUNICATIONS, INC.

50 Spring Street, Ramsey, NJ 07446, U.S.A.

201-934-8500; Fax: [phone]

www.bogen.com