Alto Pro Spectrum PA - Frequently Asked Questions

1 1 1 1 1 Rating 3.88 (8 Votes)

SpectrumPA mainSpectrum PA is a portable PA system with built-in dual LED lighting arrays that fulfills your requirements of delivering great performance sound, exciting lighting effects and wireless Bluetooth convenience for both musical acts and Karaoke performances.  This article walks through a number of frequently asked questions about the Alto Pro Spectrum PA.

 

Frequently Asked Questions

 

 

Can I change the way the front panel LED lights function and move?

  • Mood: The lights will light up solidly.
  • Meter: The column of lights will simulate a digital volume meter. Lower-level signals trigger only bottom lights. Higher-level signals trigger all lights.
  • Mix: The lights will light up according to the frequency spectrum of the audio signal. Bass frequencies will produce more red light. Mid-range frequencies will produce more green light. Treble frequencies will produce more blue light.
  • Pulse: The audio signal will cause the lights to pulse with one color (determined by the Color Select knob) with their brightness determined by the Brightness knob.
  • Party: When the Color Select knob is fully counterclockwise, the LEDs cycle rapidly through a pre-programmed dynamic show of colors and meter levels. Turn the Color Select knob clockwise from this position to change to a slower continuous cycle of solid colors. Turn the Color Select knob further clockwise to slow down how quickly the colors change.

To turn the lights completely off, turn the Brightness knob to its counterclockwise-most position.

Powered Speaker Modes

The following video walks through the various light modes.

 

How many Alto Pro Spectrum PA loudspeakers can I link together?

You can connect as many together as you like!

Each Alto Pro Spectrum PA loudspeaker contains a Link Output connection on the rear of the speaker. This connection uses a standard XLR cable (not included) to connect to another loudspeaker and the signal sent from this connection is a summed mono signal of all three rear inputs, post-Input Volume.

 

How loud can the Spectrum PA get?

The Alto Pro Spectrum PA sounds like a monster stack at 200W of peak power and 100W of continuous Class D amplification.  The maximum SPL rating is 117 dB-SPL @ 1 meter (continuous, and 120 dB-SPL @ 1 meter (peak).

 

What is the size and weight of an Alto Pro Spectrum PA loudspeaker?

The Alto Pro Spectrum PA loudspeakers are easily transportable at about 24 pounds each and the dimensions are 10" x 9" x 31" (L x W x H).

 

How do I pair my Bluetooth device to the Alto Pro Spectrum PA?

  1. Press and release the Spectrum PA loudspeaker's PAIR button. The LED will flash, and you will hear a tone sequence.

  2. From your Bluetooth device's settings page, enable Bluetooth and select Alto Pro Wireless as the device.

  3. When paired successfully, you will hear a final "confirmation tone" from the loudspeaker and the PAIR LED will light continuously.

    Note: The first time you do this, the process may take up to 60 seconds. Also, if your device prompts you to enter a PIN code to pair, enter 0000 (four zeros). If your device prompts you to select the connection type, select stereo speakers, advanced audio, or a similar option.

 

How far can the Bluetooth connection go?

Spectrum PA loudspeaker systems use an advanced, extended-range Bluetooth antenna design, allowing for ranges far greater than traditional Bluetooth devices. The typical range is 60-80 feet (18-24 meters) with a clear line of sight. However, the range may vary depending on your source device and the environment.

 

I'm playing music from my Bluetooth device. Why can I only hear the left side?

The Spectrum PA speakers are designed to playback in mono, even when sending it a stereo audio signal via Bluetooth. Instead of summing, or combining, the two sides of your stereo signal, the speaker will simply default to the left side of the signal. When a second speaker is linked, this will then be sent the right side, giving you a full stereo sound.

If you are only planning on using one speaker at a time, you can configure your device to playback in mono so you can still hear both the left and right sides. Please refer to our guide at the link below on how to best configure your device:

 

How many Alto Pro loudspeakers can I link together?

You can link multiple Spectrum PA loudspeakers in two different ways: using XLR cables or Wireless Linking.

  1. Using physical XLR connection cables, you can connect as many Alto Pro Spectrum PA loudspeakers together as you like!

    Each Alto Pro Spectrum PA loudspeaker contains a Link Output connection on the rear of the speaker. This connection uses a standard XLR cable (not included) to connect to another loudspeaker and the signal sent from this connection is a summed mono signal of all three rear inputs, post-Input Volume.

  2. Wireless Linking: First, follow the steps suggested above to Pair a single Spectrum PA to your Bluetooth device. This will set that first speaker as the "Master" and once the second speaker is linked, the second speaker will become the "Slave". The Bluetooth device will send the signal to the Master loudspeaker, which will then relay the signal to the Slave loudspeaker.

    To link a second Alto Pro Spectrum PA loudspeaker wirelessly, follow the steps suggested below:

    1. Make sure no audio is playing from your Bluetooth device. If it is, pause/stop playbackand wait 5 seconds.

    2. Press and release the Stereo Link button on each loudspeaker.

    3. Both loudspeakers' LEDs will flash while "searching" for each other, and you will hear atone sequence from both loudspeakers. (This process may take up to 60 seconds. However, the very first time you link the loudspeakers, the process may take up to 3 minutes.)

    4. When they are successfully linked, you will hear a final "confirmation tone" from both loudspeakers and the Stereo Link LEDs on both loudspeakers will light continuously.

      Note: The stereo signal will be split between the two loudspeakers: the master loudspeaker will play the left channel; the slave loudspeaker will play the right channel.

      Tip: When using two loudspeakers, we recommend labeling the master loudspeaker so you can distinguish between the two in future setups.

 

 

Further Technical Support

Whether you are a customer or dealer, if you already own a Alto Professional product, or if you have pre-sales or parts questions, the Alto Professional technical support team is available to help!

Each product has a dedicated support page on the website where you can find manuals, specifications, software updates, drivers and troubleshooting guides: www.altoproaudio.com

Visit the link below to connect with any of the following support options: online community support, phone support, email support. 

 

Popular

Latest Articles