Question about Infinity 7540A Car Audio Amplifier

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Infinity Interlude IL120s Powered Subwoofer (home) will not power

I have an Infinity Interlude IL120s Powered Subwoofer that suddenly will not power up. It just stopped working one day last week. I've tried changing the external fuse to no avail. Has anyone had this problem and do you know how to fix it? The warranty has already expired. :(

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  • lschultz68 Feb 03, 2009

    Hi MrScary66613,



    I accidently put my problem under a car subwoofer category instead of home. I'm new to this site and for me right now, it's poke and hope on how to add a new product. Do you have any experience with the home models?



    Thank you,



    Lisa

  • Anonymous Mar 28, 2009

    Same probelm, over loaded componet R153. Does anyone have a schematic?

  • dstock66 Mar 28, 2009

    R513 failed

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Some of these Infinity Amps have an Internal Glass Fuse. Open the Case and Check for this Fuse. Please Rate My Response! Thanks!

Posted on Feb 03, 2009

  • Travis Humphries
    Travis Humphries Feb 03, 2009

    I will try to help ya anyway. Unplug the Sub and Remove the Back Panel. Check the Internal Circuit Board for any Breaks in the Board Tracer Wires or For Fuses. Let me know what you Find.

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on Jun 03, 2010 | Car Amplifiers

1 Answer

Need schematic diagram infinity basslink subwoofer


Design: The BassLink brings together a 10" subwoofer (treated paper cone, foam surround), a 10" passive radiator (to increase efficiency and limit distortion), and an extremely efficient, specially designed 200-watt Class D amplifier that work as an integrated system. Special circuitry monitors voice coil position to maintain linearity at high power levels, so you hear loud, clear bass.

Enclosure Type and Materials: The enclosure is made of an acoustically inert polymer which is rigid enough to resist flexing and dampens any resonance.

Servo-Control: The servo-control system continually monitors the performance of the speaker and ensures that the amplifier delivers exactly the right amount of power.

Class D Amplifier: This unit has a built-in 200 watt Class D amplifier which is highly efficient and designed specifically for use with the subwoofer and passive radiator combination.

Auto Turn-On Feature: When the speaker level inputs are used, the system will automatically turn on and off with the radio. Note: The auto turn-on feature does not operate when the preamp level inputs are used, unless the remote turn-on lead is connected.

Low-Pass Crossover: The low-pass crossover frequency can be varied from 50Hz to 120Hz for a seamless transition between the output of this unit and that of the other speakers in the vehicle. The crossover has a slope of 12dB per octave.

Bass Boost: The amplifier includes a continuously adjustable bass boost from -6 to +3dB centered at 40Hz.

Phase Switch: Allows you to select normal or reverse for best bass.

Mounting: You will be able to put BassLink in a variety of in-vehicle locations, thanks to its compact size and mounting feet that enable the rigid polymer box to be mounted vertically or horizontally.

Vertical Mounting Dimensions:
Width: 14.625"
Height: 13.375" (including feet)
Depth: 8.675" (10.076" including feet)
Horizontal Mounting Dimensions:
Width: 14.625"
Height: 9.5" (including feet)
Depth: 12.75" (15.1875" including feet)

BassLink LC Remote Level Control

Overview: The BassLink LC allows you to adjust the volume of BassLink powered subwoofer.

Installation: The BassLink LC may be mounted under the dash or may be dismantled and mounted inside the dash for a factory appearance.

Under-dash Mounting: Select a mounting location that allows easy, safe access to the control while driving. The BassLink LC has mounting "ears" to use as a template for drilling pilot holes. Attach screws through the "ears" to secure the BassLink LC to the mounting surface.
In-dash Mounting: Disassemble the BassLink LC by removing the Phillips-head screws on the front, rear, and top panels. Remove the bottom and side panels and disengage the RJ11 connector from the back panel. Choose a mounting location that allows easy, safe access to the control, and provides 1-3/4" clearance behind the mounting surface. Drill a 9/32" hole in the mounting surface. Feed the BassLink LC's potentiometer (with the knob removed) through the hold and use the nut provided to hold the control in place.
Connecting to BassLink: Route the cable behind the dash or other interior panels and under the carpet. Do not route the cable outside the vehicle. Connect the cable on both ends.

Inputs and Controls

Inputs:

Universal Interface: Front and rear, left and right Universal interface speaker-level inputs (for use with the supplied speaker-level input wiring harnesses)
Line Level RCA Inputs: Front and rear, left and right female preamp level inputs
+BATT (+12V): Gold-plated screw terminal, 0.350" wide
REM (remote turn-on): Gold-plated screw terminal, 0.350" wide
GND (ground): Gold-plated screw terminal, 0.350" wide
Fuse: There is an installed 20 Amp fuse
Remote Gain Control: Phone type jack for included remote gain control

Controls:

Gain Control: Rotary control that sets gain (variable from 250mV to 4V)
Crossover Control: Rotary control that sets the low-pass crossover point (variable from 50 to 120Hz)
Bass Boost Control: Rotary control that sets bass boost level (variable from -6 to +3dB, centered at 40Hz)
Phase Switch: Selects normal or reverse phase (0 or 180 degrees)
Power LED: The power LED glows red when the BassLink is on
Servo LED: The Servo LED glows green when the servo circuit has determined that the woofer has reached maximum excursion and power to the woofer has been modified to provide maximum performance. The LED should light momentarily during high-level bass transients. Note: Avoid adjustments that cause the LED to remain lit for an extended period of time


Thanks

Apr 01, 2012 | Infinity Bass Link Subwoofer Car Audio...

1 Answer

Can you use a bazooka ba1150 to power up an infinity 1230w sub? not a techie just happened to have these two items and was wondering if i can use them together. thanks.


This is an 150 RMS amp, but the ratings say it'll push 2 10's.
You probably won't get much out of that amp with a 1230 watt subwoofer.
The subwoofer you are wanting to run is 300 RMS, so you'll get half the power you could be pulling. But it would do okay I guess. Nothing like what you could get with a different amp though. You need like a 1000 watt amp to get the most out of your sub. But "YES" you can use them together.

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1 Answer

All wires are hooked up but no lights come on, is


Hi Wex,

Wires being hooked up is fine. With no lights coming on the question becomes one of power.

Ground needs to be grounded.
+12VDC should have +12VDC
Remote should also have +12VDC when the stereo is on.

Check these with a volt meter. Negative lead on the ground terminal, Positive on +12V then Remote.

Both combinations should read +12VDC.

Next check the fuses if any that your amp has. Make sure they aren't blown.

Comment back if this doesn't point you in the right direction.

Mike

Dec 08, 2009 | Infinity Car Amplifiers

1 Answer

Amp 7541a amp was working fine, Took it out of one


REMOVE THE RCA INPUTS AND DISCONNECT THE SPEAKERS, THEN POWER THE AMPLIFIER UP WITH THIS NO INPUT, NO SPEAKER LOAD CONDITION. IF IT STILL GOES INTO PROTECTION AND YOU HAVE VERIFIED THAT THE POSITIVE AND ESPECIALLY THE GROUND CONNECTIONS, ALONG WITH THE REMOTE CONNECTIONS ARE 100%, THEN THE AMPLIFIER WILL NEED TO BE SERVICED. KEEP IN MIND, THAT DURING THE INITIAL TURN ON OF THE AMPLIFIER, THEY SOMETIMES WILL ILLUMINATE THE PROTECTION LIGHT WHILE STABILIZING THE POWER SUPPLY AND OUTPUTS, BUT AFTER THAT THEY SHOULD SHOW NORMAL POWER UP. IF YOU GET IT TO POWER UP FINE, THEN RECONNECT THE SPEAKERS AND IF STILL OK, THE RECONNECT THE RCA'S. IF IT IS STILL POWERED UP, THEN START TO TURN UP THE MUSIC. IF IT IS STILL POWERED UP AND NO MUSIC, THEN CHECK THAT YOU DEFINITELY HAVE A PROPER SIGNAL COMING FROM THE RADIO. LET ME KNOW IF YOU NEED FURTHER ASSISTANCE.....V

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1 Answer

1998 Toyota Camry Le Wiring Diagram. i want to hook a subwoofer with stock stereo. Need to know what to use so it will power off when car is turned off.


Hello motoxbear17,

You do not specify what particular amp or powered subwoofer you intend to install, so I'm assuming that you have an amp that uses a remote 12V+ signal to turn the amp on and off. Some powered subwoofer systems like the Bazookas, Infinity Basslink, and MTX Thunderlink use an "audio sensing" circuit that turns the sub on only when the radio is on. Some amps also have such a "turn-on" circuit that is active when speaker level inputs are used. I'd recommend that you check the documentation that came with your amp and see if it has such a feature.

For a normal subwoofer amp with power, ground, and remote terminals, the remote terminal usually just needs a 12V+ source to turn the amp on.

In your vehicle, the gray wire coming from the receiver harness is a 12V+ switched source.

Here's a link to the '98 Camry wiring color code:

http://www.modifiedlife.com/car-stereo-radio-wiring-diagram-1998-toyota-camry/

With this connection, the amp will power on whenever the vehicle ignition is on or in accessory, regardless of whether the radio is on or off. If this is objectionable, you can simply add a SPST toggle switch inline with the lead and turn it on only when needed.

Hope this helps.

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Amp getting hot and shutting off


no mine do that and its pretty much normal

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Powers on but no sound


Check the main amp fuse under the hood, even if it looks good just change it. Often times that light on the amp can come on just from the power amp tunon wire. Try a friends subwoofer box just to make sure the connectors on your box are good, and if that doesn't work then give me some more details....year/make/model of car, what kind of sub, what types of things do you see on the side of the amp....is there a green light as well as a red light?

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