Question about Infinity Entra Sub Subwoofer

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Infinity Entra Sub 150 no sound or power

My Infinity Entra Subwoofer 150 no longer produces any sound and the green LED between the phase switch and the crossover knob appears to be out..Is the sub dead? Is it cheaper to have the amp replaced on it or just go buy a new one??

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I had the same problem. When I opened it up, the fuse was blown, and it was a pain to find the fuse it needs (3 Amp, 250 V slow-blow fuse, 5x20 mm). Also, the 2 large electrolytics (big purple things near the amp) and one small capacitor were all blown. For 4 fuses, bought seperately from, and the 2 electrolytics and 1 capacitor, it cost about $20, plus almost 20 more in shipping, which still isnt bad considering the original price of the sub. However, the tricky part is that you have to know how to use a soldering iron to take out the old components and put in the new ones.

Posted on Mar 23, 2009

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How do i fix my infinity entra 10 inch 150 watt powered subwoofer. fuse is good, green led is on so it is getting power


Best to start at the beginning. You have it connected properly? Are you using the line level, direct or speaker inputs? What output on your receiver are you using?
Have you adjusted the volume control?
If you have everything correct, are you the original owner? It's an older model so if you are the original owner what happened when it stopped working? Noises, fade out, just wouldn't turn on one day.

Are you capable of doing some minor electrical work? Can you read a schematic? Can you recognise electrical parts? If the answer to any of these last three questions is no, you need to take it to someone that has the ability to do electrical repairs. If the answer to all three is yes you can fix this yourself.

Feb 08, 2016 | Infinity Entra Sub Subwoofer

1 Answer

Why is there humming when a speaker wire is connected to speaker output


For a powered subwoofer:

Connect to the receiver Sub line out

• Use a shielded cable and not wire



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Sep 20, 2012 | Infinity Entra Sub Subwoofer

1 Answer

After some time on, the sub starts popping. unplug and plug in and it stops for a while. Is this the sub or the amp


No speaker spontaneously makes popping noises unless it is driven so hard the mechanical parts are crashing into each other. The amp is probably stressing out due to heat, which would explain the delayed onset of the symptom and its disappearance after a cooldown.

Perhaps you are overdriving it??

Jul 13, 2011 | Infinity Entra Sub Subwoofer

1 Answer

How do u hook up the infinity entra sub it has speaker level(input and output) that look like these red and black spots r for spearker wires and then line level input so I connect my music to the rca plugs...


Maybe if you described the setup with exact model numbers for everything involved we might be able to answer with specifics.

You could poke around her for the Entra Manual for YOUR model.

http://manuals.harman.com/INF/Hom/Owner's%20Manual/

What they do NOT explicitly tell you is that the amp in the sub is not for your other speakers running off it's Speaker Level outputs. They're just there as a pass-through if you use Speaker Level from your own amp.

Line Level (RCA) IN to the sub will NOT pass anything out those Speaker level outputs.

Jan 13, 2011 | Infinity Entra Sub Subwoofer

1 Answer

Even Distribution


i have same speakers try these setting and tell me what you think put phase at 180 and put switch on lfe mode not normal for some reason my sub plays louder on these setting verse phase on 0 and lfe switch on normal i have power on subwoofer a little more than half also set croosover to 80hz you will never touch it again

Dec 05, 2008 | JBL Northridge E 250P Subwoofer

1 Answer

Infinity ps-10 powers up but no boom


Try hooking up a different signal input to your powered sub, another stereo or even a dvd players audio output to the sub will work for a test. Just make sure the subs gain is down before starting. If it still not producing sound, the subwoofers amplifier is bad. I hope this helps.

Oct 10, 2008 | Infinity PS-10 Subwoofer

1 Answer

Inifinity Entra Sub not working


The hum can be from the power supply not properly filtering, and or the output stage also has a short.

There is the chance that the speaker driver coil is now burned, or the power supply is now dead. If ther output stage is shorted and was putting DC on to the speaker cone, this will burn it very easily.

You should sent the unit out and have it serviced, unless you are properly trained, have the service and engineering manuals, and the test equipment to follow up on a proper repair and calibration.

Jerry G.

Apr 27, 2008 | Infinity PS-10 Subwoofer

2 Answers

Subwoofer connection


if this is ao powered sub, that plugs into the wall, there should be no problems, if it is powered solely by the reciever it may work fine but be sure you dont exceed amperage on the subwoofer.

Jan 28, 2008 | Bose 151SE Main / Stereo Speaker

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