Setup: Alto TS108C Portable Columnary Array Loudspeaker User Guide

Content

Overview

The TS108C Portable Columnary Array Loudspeaker is a compact powered column system designed for musicians, DJs, presenters, and small venues that need clear coverage, simple setup, and flexible input options. It combines a subwoofer base with a modular column array, making it easy to tailor the height to the room and audience.

The TS108C Portable Columnary Array Loudspeaker is especially useful when you need portable sound reinforcement that can handle microphones, instruments, Bluetooth audio, and a wired mix output from one cabinet.

Specifications

Model: TS108C
Peak power: 600 W
RMS power: 300 W total, including 200 W LF and 100 W HF
Low-frequency driver: 8.0 in. (203 mm), 6 Ω
High-frequency array: 6 x 2.75 in. (70 mm), 8 Ω drivers
Coverage: 120° horizontal x 30° vertical
Maximum SPL: 123 dB at 1 m
Sensitivity: 92 dB (1 W/1 m)
Frequency response: 55 Hz–15 kHz (-3 dB), 35 Hz–20 kHz (-10 dB)
Bluetooth range: up to 100 ft. (30.5 m)
Stereo-Link range: up to 50 ft. (15 m) between speakers
Power input: IEC connection
Voltage: 100–120 V~ or 220–240 V~, 50/60 Hz
Power consumption: 300 W
Dimensions: subwoofer 19.5 x 12.5 x 15.6 in. (49.5 x 31.8 x 39.6 cm)
Dimensions: each column section 18.6 x 3.4 x 3.8 in. (47.2 x 8.6 x 9.7 cm)
Assembled height: 76.6 in. (194.5 cm)
Weight: 35.1 lb (15.9 kg)

Detailed Description

The TS108C Portable Columnary Array Loudspeaker uses a three-part column structure above a powered subwoofer base. One upper section contains the loudspeaker drivers, while the other two column sections act as spacers that let you raise or lower the array height.

This design helps place the sound closer to ear level when the audience is at the same floor height, or lower the array when the system is on a stage and the sound needs to project more directly to the room. The column sections connect by aligning the internal connectors and pressing them together until they lock into place.

On the rear panel, the TS108C Portable Columnary Array Loudspeaker includes dual combo inputs for microphones, line-level sources, and instruments, plus gain, reverb, EQ, and speaker-use controls. It also provides a mono mix output for linking to another loudspeaker, along with Bluetooth playback and an auxiliary input for portable devices.

Safety

This loudspeaker is not intended for suspended mounting or stand-mounted use. It should always be placed on a flat, stable surface and installed in line with local electrical and building rules.

Keep cables clear of walkways and performance areas, and use help when lifting the system if the weight is difficult to manage. Outdoor use requires extra care in windy conditions, and nothing should be attached to the enclosure except the cables or equipment required for normal operation.

High sound levels can cause permanent hearing damage. Use hearing protection when operating the TS108C Portable Columnary Array Loudspeaker at high output, especially for long periods.

Setup and Operation

What’s in the box

TS108C loudspeaker system
Base subwoofer
3 columnar array attachments
Carrying bag
Power cable
Quickstart guide
Safety and warranty manual

Start by placing the subwoofer base on a level surface. Add one, two, or all three column sections depending on the height you need. The column array should be positioned so the drivers are aimed appropriately for the audience, not just assembled to maximum height by default.

To connect a section, align the ends and push gently until it snaps into place. After the input sources are connected, plug in the power cable and switch the unit on from the base. When finished, power the unit off before pulling the sections apart and storing the columns in the carrying bag.

Power sequencing

To reduce pops and clicks, turn source devices on first with their output controls lowered, set the TS108C Portable Columnary Array Loudspeaker gain knobs to zero, then power on the speaker. Raise mixer or source levels, and bring up the speaker gain only after audio is playing.

For shutdown, return the gain knobs to zero, power off the speaker, and then turn off the connected sources and processors.

Controls and connections

Power input: IEC power connection for the included power cable
Power switch: turns the system on and off
Voltage selector: used only when changing to a region with a different mains voltage
Channel inputs 1 and 2: XLR/TRS combo inputs for external audio sources
Input selector: sets CH1 for mic or line, and CH2 for instrument or line
Gain: adjusts the level of each channel
Reverb: adds reverb to the selected channel
EQ: selects high or low band, then boosts or cuts that band
Mix output: sends a mono combined signal to another loudspeaker
Speaker Use: chooses Normal, Live, DJ, or Custom voicing
BT/AUX gain: sets playback level for Bluetooth or auxiliary audio
Pair: enters Bluetooth pairing mode
Link: enables Stereo-Link wireless connection to a second TS108C speaker
AUX input: accepts a 3.5 mm auxiliary source

Speaker Use modes

Normal: balanced response for general playback
Live: tuned for solo performance with a lighter low end and clearer vocal presence
DJ: emphasizes bass and high-frequency detail for music playback
Custom: works with the Alto Pro app for personalized tuning

Bluetooth and Stereo-Link

To pair a Bluetooth device, put the speaker in pairing mode, then select it from the Bluetooth menu on your phone, tablet, or laptop. If asked for a code, use 0000. When pairing succeeds, the PAIR indicator stays lit, and previously paired devices can reconnect automatically when they are nearby.

The TS108C Portable Columnary Array Loudspeaker also supports wireless stereo playback with a second compatible speaker. Put both speakers in Stereo-Link mode, wait for them to find each other, and confirm that the LINK indicators become solid. The connected speaker to the Bluetooth device will show the active connection status after a short delay.

Using the Alto Pro app

The app is designed for recent Android and iOS devices. After installing it and connecting the speaker by Bluetooth, it can be used to adjust speaker voicing, create a custom EQ, and manage channel volume and channel EQ. App mixer controls work after the channel gain stage, so best results come from setting input gain just below clipping before making digital adjustments.

Troubleshooting

Distorted sound: lower the source volume first, then reduce the channel gain or speaker channel volume.
Hum in the system: test the cables, use balanced connections when possible, keep signal cables away from power cables, and connect audio gear to outlets with a common ground.
High-pitched whistling with microphones: move the speakers in front of the microphones when practical, or point the microphone away from the speaker to reduce feedback.
Microphone too quiet: lower the music playback level from the source.
Instrument too quiet: use channel 2 and confirm that the input selector is set to instrument mode.
Bluetooth will not connect: bring the device close to the speaker, remove obstacles, reset Bluetooth on the device, forget the speaker if needed, and try pairing again after power cycling the loudspeaker.
Stereo-Link is not working: double-press the Link button to unlink both speakers, then start the wireless link process again.

Cleaning and Maintenance

Store the TS108C Portable Columnary Array Loudspeaker with the column sections separated and placed in the carrying bag when the system is not being used. Keep the enclosure, connectors, and cables in good condition, and follow the included safety guidance for inspection and maintenance.

Pros & Cons

Pros: modular column height, strong 600 W peak output, built-in mixer, Bluetooth streaming, wireless stereo linking, and useful app control.
Pros: flexible input selection makes it practical for vocals, instruments, and playback in one portable system.
Cons: not designed for stand mounting or suspended installation.
Cons: best results depend on correct gain staging, placement, and feedback control.

PDF

Faqs

How do I assemble the TS108C Portable Columnary Array Loudspeaker for the best sound?

Place the subwoofer base on a flat, stable surface first, then add the column sections you need. The top section contains the loudspeakers, while the other two sections act as spacers to raise the height. For the best coverage, aim to position the speakers near the audience’s ear level. Align the connectors carefully, push each section in gently until it clicks, then connect your audio devices and power. Power on the system only after everything is securely assembled.

Can I use the TS108C on a speaker stand or suspend it from above?

No. The TS108C is not designed for suspended installation or stand mounting. It should always sit on a flat, level, and stable surface to reduce the risk of tipping or damage. In outdoor or windy environments, extra caution is needed because the tall column design can be more vulnerable to movement. Avoid attaching anything other than the cables or equipment required for normal operation, and make sure the unit is installed in line with local electrical and building rules.

What is the correct power-on and power-off sequence for the TS108C?

Use the recommended power sequence to avoid pops, thumps, and other loud noises. Before turning anything on, lower the output levels on your mixer or source, set the TS108C gain knobs to zero, then power on the speaker. After that, bring up your source levels and slowly raise the TS108C gain to a comfortable listening level. When shutting down, return the gain knobs to zero, power off the TS108C, and then turn off the connected audio sources or processors.

How do I pair a Bluetooth device to the TS108C Portable Columnary Array Loudspeaker?

Turn on your phone, tablet, or other Bluetooth device and keep it within range of the speaker. Press the PAIR button on the TS108C to enter pairing mode, then open the Bluetooth settings on your device and select the speaker from the list. If a code is requested, use 0000. When pairing succeeds, the pairing light stays solid. If you have connected before, the speaker may reconnect automatically when it is available again.

How do I use Stereo-Link on two TS108C speakers for wireless stereo playback?

To create a wireless stereo pair, both speakers must be powered on and close enough to each other. First pair your Bluetooth device to one speaker, then press and hold the LINK button on that speaker until the link indicator starts flashing. Repeat the same step on the second speaker. The two units can take up to a minute to find each other. Once linked, both indicators stay solid, and you can stream stereo audio across the pair.

Which input should I use for a microphone, instrument, or mixer with the TS108C?

Use the input that matches your source type. Channel 1 supports MIC or LINE, while Channel 2 supports INST or LINE. For microphones, set Channel 1 to MIC. For instruments, use Channel 2 and switch it to INST. For mixers or other line-level devices, set the selector to LINE. If the clip indicator stays on, lower the source volume first and then reduce the channel gain until the signal is clean.

Why is the TS108C sound distorted or clipping, and how can I fix it?

Distortion usually means the signal is too hot somewhere in the chain. Start by lowering the output level on the connected microphone, instrument, or music source. Then reduce the channel gain or volume on the TS108C until the clip light stops staying on. If you are using Bluetooth or AUX playback, turn down the source device and rebalance with the BT/AUX gain control. Setting proper gain staging usually solves the problem quickly.

What should I check if the TS108C has hum, feedback, or Bluetooth connection problems?

For hum, test the cable by disconnecting it, use balanced cables whenever possible, keep audio cables away from power cords, and plug related gear into outlets with a common ground. For microphone feedback, move the speakers in front of the mic or point the mic away from the speaker. For Bluetooth issues, keep the device close, remove obstacles, toggle Bluetooth off and on, and forget the speaker on previously paired devices if it is still trying to reconnect.