Rotel RC-1550 12V Trigger Connections y, Audio Controls, Phones Output, Media Player Input

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12V Trigger Connections y

Many Rotel amplifiers offer the option of turning them on and off using a 12 volt trigger signal sent to them. The RC-1550 provides a 12 volt trigger output to take advantage of this feature. When the RC‑1550 is turned on, a 12 volt DC signal is sent to the amplifier to turn them on. When the RC‑1550 is put in STANDBY mode, the trigger signal is interrupted and the amplifiers turn off.

To use the remote turn on feature, connect the RC‑1550 12V TRIGGER OUT jack to the 12 volt trigger input of a Rotel amplifier, using a cable with mono 3.5 mm mini-plugs on both ends. The +12 V DC signal appears at the “tip” connector.

Audio Controls

Volume Controls 5 and C

The front panel Volume control 5 increases or decreases the volume in both channels at the same time. Turn it clockwise to increase the volume or counterclockwise to decrease the volume. On the RR-AT94 remote use the Volume + and – buttons C to increase or decrease the volume level.

Mute Button A

Remote Only

Push the MUTE button on the remote once to turn the sound off. Press the button again to restore previous volume levels. The LED in the volume control will flash when the unit is muted.

Phones Output 0

The Phones output allows you to connect headphones for private listening. This output accommodates standard 1/8” stereo mini plugs. If your headphones have a 1/4” plug you will need an adapter plug. Contact your authorized Rotel dealer, to get the correct adapter plug.

Note: Plugging in a set of headphones does not cut off the signal to the outputs. In most instances you should turn off the power amplifier when listening to headphones.

Note: Pressing the volume buttons on the remote also cancels the muting function.

Balance Control 6

The Balance Control adjusts the left-to-right balance of the sound output. Normally the control should be in the center position. In some situations, typically when the main listening position is not ideally centered between the speakers, it may be necessary to adjust the control to achieve proper left-to-right balance. Turning the control counter-clockwise shifts the sound balance to the left. Turning the control clockwise shifts the sound balance to the right.

Media Player Input 9

A 3.5mm (1/8”) stereo input socket for a “Media Player” is provided on the front of the RC-1550. To select it, turn the front panel LISTENING control 8 to AUX or press the AUX 1 button B on the RR-AT94 remote control.

Any portable stereo cassette, compact disc player or hard disc playback device can be connected via this input. If the Media Player input is connected to the headphone outputs of the player note that you may need to adjust the volume control on the player for sound to be heard. If the sound is loud and distorted turn down the volume on the player. If the sound is not loud enough, even when the RC-1550 volume control is turned up fairly high, then carefully turn up the volume control on the player.

Note: When the 3.5mm (mini jack) is inserted into the Media Player socket the rear input called AUX is disconnected. Removing the 3.5mm plug from the Media player socket will allow the rear AUX input to function.

Tone On/Off Switch 4

When the Tone Switch is in the Off (out) position the Bass and Treble Control circuits are bypassed to ensure the purest possible sound. Leave the Tone Switch in the Off position unless you want to use the Tone Controls. Push in the Tone Switch if you want to adjust the Tone Controls.

Bass and Treble Controls 3

When the Tone Switch is pushed in, turning the Bass and Treble Controls adjusts the tone balance of the sound. Turn the Controls clockwise to increase the bass or treble output. Turn the Controls counterclockwise to decrease the bass or treble output.

A properly set up high-performance audio system produces the most natural sound with little or no adjustment of the tone controls. Use these controls sparingly. Be particularly careful when turning the controls up (clockwise). This increases the power output in the bass or treble range, increasing the load on the amplifier and speakers.

Listening Selector Controls 8B

Turn the front panel control 8, or press one of the remote control buttons B, to select the input signal that goes to the main outputs and to the power amplifier – or, more simply, which source is heard.