Audison USS4 Universal 4 Channel Speakers Simulator Presence Load Interface
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The Audison USS4 is a 4-channel universal speaker simulator and presence load interface from Audison's processor accessory range. It presents a 12 ohm load to OEM head units that mute their outputs when no speaker load is detected, allowing connection to the high-level inputs of an Audison bit processor or amplifier.
Key specifications
- Channels: 4 in / 4 out
- Input power: 50W max
- Input / output impedance: 12 ohm
- Remote out (with 12V supply): 12V DC, 150mA
- Delayed remote out: 12V DC, 150mA, 1 to 8 seconds
- Weight: 90g
Audison USS4: universal speakers simulator
Some OEM head units include a test circuit that monitors for a low-impedance speaker load before enabling audio outputs. Connecting this type of head unit directly to the high-level inputs of an Audison bit processor — which presents a high-impedance load — causes the audio outputs to be silenced. Inserting the USS4 between the source and the processor or amplifier resolves this problem.
If a remote signal is needed to control amplifier turn-on and turn-off, the USS4 can be powered to provide this. It also offers a delayed remote output, adjustable from 1 to 8 seconds, to prevent audible "bumps" at ignition.
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Specification
| Weight | (gr / lb.) 90 / 0.19 |
|---|---|
More specs
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What's Included
- Audison USS4
Audison
About the Audison USS 4.00
From our tech experts at CEN
A load simulator, presenting the factory amplifier with the load it expects so it does not fault or mute once the original speakers are gone.
Who it suits
Anyone replacing a factory amplified system where removing the original speakers would otherwise throw an error and stop the install dead.
Our tech experts advise
Whether you need one depends on the vehicle and its factory audio specification, which we check before the job rather than on the day. get in touch. See car audio installation.
Explore the full Audison range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Audison
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Frequently Asked Questions
Q: Why would I need the Audison USS4?
A: Some OEM head units only enable their audio outputs when they detect a low-impedance speaker load. A processor's high-level inputs present a high impedance, so the outputs stay silent. The USS4 sits between the source and the processor or amplifier and simulates the speaker load.
Q: Does the USS4 need power?
A: Only if you want it to generate an amplifier remote turn-on signal. With a 12V supply it provides a remote output and a delayed remote output (1 to 8 seconds) to avoid turn-on thumps.
Q: How many channels does the USS4 handle?
A: Four input and four output channels, with up to 50W maximum input power and a 12 ohm input and output impedance.
