Black Trevoce 12EQ - Subwoofer OSD Audio - Free user manual and instructions

Product Type	Powered Subwoofer
Brand	OSD Audio
Model	Black Trevoce 12EQ
Driver Size	12 inches
Amplifier Power (RMS)	400 Watts
Peak Power	800 Watts
Frequency Response	25 Hz – 200 Hz
Impedance	4 Ohms
Enclosure Type	Sealed (Acoustic Suspension)
Controls	Volume, Phase, Low-Pass Crossover, EQ
Inputs	LFE (RCA), Line Level (RCA L/R)
Dimensions (H x W x D)	16.5 x 16 x 18 inches
Weight	45 lbs
Power Supply	AC 110-120V, 60Hz (Internal)
Standby Power Consumption	< 0.5W
Cabinet Finish	Black Vinyl
Grille	Detachable Black Cloth
Protection Circuitry	Short Circuit, Overheat, Overload
Placement	Floor-standing, Front-firing
Recommended Room Size	Medium to Large (up to 400 sq ft)
Accessories Included	Power Cord, User Manual, RCA Cable
Maintenance	Clean with dry cloth; do not use solvents
Safety Certifications	ETL, UL Listed
Warranty	5 years (electronics) / Lifetime (driver)

Frequently Asked Questions - Black Trevoce 12EQ OSD Audio

What is the recommended crossover frequency for the Black Trevoce 12EQ?

Start with the crossover set to 80 Hz and adjust based on your main speakers and room acoustics.

Can I use this subwoofer in a car?

No, the Black Trevoce 12EQ is designed for home audio systems and requires AC power.

Does the subwoofer have a built-in amplifier?

Yes, it is a powered subwoofer with a built-in 400-watt RMS amplifier.

How do I connect the subwoofer to my AV receiver?

Use an RCA cable from the subwoofer output on your receiver to the LFE input on the subwoofer.

What is the advantage of the EQ feature?

The 12EQ allows you to fine-tune the bass response to compensate for room modes and achieve smoother low-frequency performance.

How do I set the phase control?

Play a test tone and adjust the phase control (0° or 180°) to achieve the highest bass output at the listening position.

Can I use this subwoofer with a stereo amplifier?

Yes, connect the line-level inputs (RCA left/right) to your amplifier's preamp outputs or speaker-level inputs with an adapter.

What should I do if the subwoofer shuts off suddenly?

Check for overheating or a blown fuse. Ensure proper ventilation and reduce volume if necessary. The protection circuit will reset after cooling.

Is the subwoofer magnetically shielded?

No, this subwoofer is not magnetically shielded. Place it at least 12 inches away from CRT televisions or sensitive equipment.

How do I clean the subwoofer grille?

Remove the grille and gently vacuum or wipe with a damp cloth. Do not use harsh chemicals.

USER MANUAL Black Trevoce 12EQ OSD Audio

by OPTIMAL SPEAKER DESIGN

OSD

BLACK

TREVOCE EQ SEIRES SUBWOOFER INSTALL GUIDE

TREVOCE15 EQ

TREVOCE12 EQ

Exterior view of two black audio/video speakers with mesh head covers (no text or symbols visible)

TREVOCE EQ SERIES SUBWOOFER INSTALL GUIDE

Thank you for buying the latest version of our most popular subwoofer.

The additional upgrades we have made make this the best all-round sub in our history. Incorporated in the Trevoce EQ Series is the new native EQ. The native EQ has allowed us to extract the maximum base extension possible from our design. This allows the full range of musical instruments and special effects to be reproduced. The Trevoce EQ Series does this all without any increase in the size of the sub. Our Trevoce subs offer the smallest footprint you will find in triple driver designs.

Installation Precautions:

Before installing

Before connecting your subwoofer, make sure all equipment is switched off and that voltage switch is set to your country's voltage. Do not connect the subwoofer power supply cable before completing all connections;

Features:

World Class Digital Amplifier Technology

The TreVoce Series powered subwoofer incorporates the latest digital amplifier technology to maximize performance while generating very little heat. In standby mode, the unit consumes less than 0.5 watts, making it one of the greenest solutions available.

Tuned System Performance

Rear mounted volume control, low pass crossover, phase control ensure optimal system integration and built-in native EQ ensures the deepest bass frequencies.

Cabinet

An attractive furniture quality solid cabinet with 'leather' finish, provides the foundation for high sound quality and clarity.

Connection & Controls

1. High Level Inputs

Use for Left/Right connection from speakers.

2. Line Level Input

Use for Left/Right connection from subwoofer-out, or line-out, on amp/AVR.

3. LFE Input

Connect to the LFE output on the Receiver/Processor.

4. Balanced XLR Input

For lower noise connection if available.

5. Power LED

(Red) Standby Mode - (Blue) Power Mode ON

6. Power Mode Switch

Set the power mode ( OFF, AUTO, or ON )

7. Phase Switch

Allows you to set the phase of the woofer 0-180°

8. Crossover Control

Adjusts the subwoofers frequency output output to match main speakers

9. Volume Control

Adjusts subwoofer volume level.

10. Voltage Switch

Select input voltage. Default: 110-120V or 220-240V

11. Master Power Switch

Controls the main power to the subwoofer

12. AC Power Cord

Connect the Included AC power cord.

13. Fuse Holder

Master Power Fuse. Includes spare fuse inside holder.

TREVOCE EQ SERIES SUBWOOFER INSTALL GUIDE

Settings & Controls

Setting the Power Mode

ON Mode:

If the subwoofer is set to ON mode, it will always be ready to play. However, undesired noise from interference or connections changing may be heard. Use the standard ON mode only if needed, set the power switch to OFF when not in use.

AUTO Mode:

Setting the switch to AUTO enables AUTO Sense. The subwoofer turns ON and OFF automatically in response to signal input. The subwoofer will enter standby mode if no signal is sensed for longer than 15 minutes.

Set the MODE switch to the ON position for setup.

After making all the connections, setup your subwoofer using the following steps:

1. Plug the subwoofer into an electrical outlet using the included power cord. The status LED will illuminate solid blue when power is present and the subwoofer is ON.

2. Set the controls and switches to their initial setup positions:

VOLUME set the dial to 50% or 12 o'clock

CROSSOVER adjust the upper frequency limit. The purpose is to control the overlap the upper frequencies of the subwoofer and the main speakers lower frequencies. Check your main speakers specs to determine their low-end limit.

PHASE set to 0°

1. Play a movie scene or soundtrack and set the system volume to an average level. Listen to the bass level from your favorite listening position and adjust the volume accordingly.
2. Continue listening to your favorite source track and experiment with the phase control until you find the best setting for you. Depending on the location of the subwoofer the bass may sound louder and deeper when the phase has been optimized. In some cases adjusting the phase will have no audible difference.
3. Initial setup is now complete.

Specifications

Spec TreVoce15 EQ TreVoce12 EQ
Power 1000W RMS 2000W Peak 375W RMS 750W Peak
Active Woofer 15" Graphite Paper Cone 12" Graphite Paper Cone
Passive Woofer Dual 15" Glass Fiber Cone Dual 12" Glass Fiber Cone
Frequency	16 -160 Hz ±3dB 18 -160 Hz ±3dB
Phase 0-180° 0-180°
Voltage 100-120V AC / 220-240V AC 100-120V AC / 220-240V AC
Inputs Hi Level / Low Level / LFE Hi Level / Low Level / LFE
Dimensions	(WxHxD) 19.3 x 19.3 x 19.3 in	(WxHxD) 16 x 15.4 x 15 in
Weight	98 lbs	46 lbs

Warranty Information

All Optimal Speaker Design powered subwoofer products have a 2 Year Limited Warranty against defects in materials and workmanship. Proof of purchase must accompany all claims. During the warranty period Optimal Speaker Design will replace any defective part and correct any defect in workmanship without charge for either parts or labor Optimal Speaker Design may replace returned speakers with a product of equal value and performance. In such cases, some modification to the mounting may be necessary and are not Optimal Speaker Designs responsibility.

For this warranty to apply, the unit must be installed and used according to its written instructions. If necessary, repairs must be performed by Optimal Speaker Design. The unit must be returned to Optimal Speaker Design at the owner's expense and with prior written permission. Accidental damage and shipping damage are not considered defects, nor is damaged resulting from abuse or from servicing performed by an agency or person not specifically authorized in writing by Optimal Speaker Design

Optimal Speaker Design sells products only through authorized dealers and distributors to ensure that customers obtain proper support and service. Any Optimal Speaker Design product purchased from an unauthorized dealer or other source, including retailers, mail over dealers and on-line sellers will not be honored or serviced under existing Optimal Speaker Design warranty policy. Any sale of product by an unauthorized source or other manner not authorized by Optimal Speaker Design shall void the warranty on the applicable product.

Damage to or destruction of components due to application of excessive power voids the warranty on those parts. In these cases, repairs will be made on the basis of the retail value of the parts and labor. To return for repairs, you must email customer service at [e-mail] for a Returned Merchandise Authorization (RMA) number# then the unit must be shipped to Optimal Speaker Design at the owner's expense, along with a note explaining the nature of service required. Be sure to pack the speaker(s) in a corrugated container with at least 3 inches of resilient material to protect the unit from damage in transit.

This Warranty Does Not Cover: Damage caused by abuse, accident, misuse, negligence, or improper operation (installation) • Any products that have been altered or modified • Any product whose identifying number of decal, serial #, etc. has been altered, defaced or removed • Normal wear and maintenance.