Soundstream Technologies REFERENCE 405 owner manual Design Features, Congratulations

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CONGRATULATIONS

You now own the REFERENCE405 Amplifier, the product of an uncompromising design and engineering philosophy. Your Soundstream REFERENCE amplifier will outperform any other amplifier in the world.

To maximize the performance of your system, we recommend that you thoroughly acquaint yourself with its capabilities and features. Please retain this manual and your sales and installation receipts for future reference.

Soundstream amplifiers are the result of American craftsmanship and the highest quality control standards, and when properly installed, should provide you with many years of listening pleasure. Should your amplifier ever need service or replacement due to theft, please record the following information, which will help protect your investment.

Model and Serial #

Dealer’s Name

Date of Purchase

Installation Shop

Installation Date

CAUTION!

Prolonged listening at high levels may result in hearing loss. Even though your new Soundstream REFERENCE amplifier sounds better than anything you’ve ever heard, exercise caution to prevent hearing damage.

DESIGN FEATURES

Uncompromising Design and Construction including mil-spec glass epoxy circuit boards and high current custom gold-plated solid brass connections that will accept up to 4 gauge power/ground wire.

High Power/High Current Capability (Subwoofer channel) - Soundstream’s exclusive circuit which permits customization of your amplifier to its particular application--high current, low impedance loads (multiple subwoofer, 1 ohm or less) or high power, higher impedance loads (greater than 1 ohm).

ChassisinkTM Darlington Power Array - Soundstream’s “over-building” of the output section incorporates several output transistors instead of a few to deliver more power, faster. The transistors are directly sandwiched

between the circuit board and the heatsink in a design called ChassisinkTM to ensure cool, efficient amplifier operation.

Staggered Asymmetrical Electronic Crossover - Continuously variable crossover with 24 dBloctave low pass and 12 dB/octave high pass.

PowerGrid Power Supply Design - All power supply components are located near one another, connected by thick, wide PCB traces, which ensures rapid high current delivery. The entire power supply section is isolated on one side of the circuit board while the audio stage is located on the other, guaranteeing minimal noise.

Ultra-Low ESR Capacitance Bank - Multiple small input power capacitors are used to provide a lower ESR (Equivalent Series Resistance), which means the capacitors are able to provide more current, faster.

Smart Thermal Rollback Power Supply - Most amplifiers shut off when they get too hot. In the unlikely event the REFERENCE405 reaches 85OC, it will roll back average power output capability (without affecting the dynamics) until the amp cools off, when full capability is restored. If overheating should continue, a second thermal sensing protection circuit will shut off the amplifier if the heatsink reaches 95OC.

0Unregulated Power Supply - 4 ohm power ratings are measured at 12 volts, which means substantially greater output in the real world when the vehicle is running, where voltages range from 13.2 to 14.4 volts. Dynamic capability of the loosely regulated power supply is much greater than that of a tightly regulated power supply.

Fault Monitor LED on the front panel notifies you of blown power supply fuses.

112 Ohm Drive Ability - The REFERENCE405 subwoofer channel is designed to drive nearly any load--all the way down to a l/2 Ohm load!

Five Dual Discrete Class A Drive Stages - Over six times the drive current of most amps, which maintains performance into low impedance loads.

Drive Delay TM Muted Turn-on/off Circuit - A unique circuit which completely eliminates any amplifier-relatedturn-on/off noises.

Flexible Input Sensitivity accepts input voltages from 100 mV to 2.5 V, which permits maximum output from amplifier with virtually any source unit.

Balanced Input Design for added immunity to noise caused by component and vehicle electrical system interaction.

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