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Sub rumbles at very low freq that I cannot raise my output level on the sub

I have a krk submonitor that I use with my av reciever and when I try to raise the level on the sub I get a rumble with the bass sound so that I cannot raise beyound a certain level

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Hello,
That rumble could be several things, start by switching your patch cables to see if there is a fault in the sine. If not it could be the amplifier trying to pull a constant source of current through it to operate and is being corrupted by a fault in the circuitry, or a feed back look of some sort. Either way, if you can't find a problem with your input signal, your sub will need repair or replacement. I hope this helps...

Posted on Oct 17, 2008

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Can I use a JX-S900 Y/C separated I/O to run two subwoofers out of same reciever??


Yes, on two conditions:

1) the JX-S900 needs to be a proper matrix switcher. It has to have the ability to route 1 input to more than one output.

2) the sub signals need to be low level RCA/phono, and not high level speaker wire connections. That's not just about the type of connector. It's about the signal going through those wires. A low level RCA/phono sub connection conducts a maximum 0.7 Volt. A speaker wire connection can transmit 30 Volts! If you put 30 Volts in to a line level switching device such as the JX0S900 you'll fry it.

Provided that the above two criteriia are both met, then yes it will work.

  • Connect the AV receiver's sub out to Source 1 - white RCA phono.

  • Connect the two subs mono LFE Left input (white RCA) or the single black RCA/phono inputs to the JVC's outputs 1 and 2 - white RCA/phono.

  • Set the source routing: input 1 goes to output 1 and 2

Sep 17, 2014 | Speakers & Subwoofers

1 Answer

Please tell me all the connections on movie star 60+


Each of the five satellite speakers connect directly to an AV Receiver that you buy a separate device.

Here's the back of the sub. The sub either connects to the LFE Sub Out from the receiver to the white RCA/Phono Left Input. Or you can use speaker connection cables, AV Receiver front L & R to Speaker Level Inputs, and then Speaker Level Outputs to the front satellite speakers.

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Aug 16, 2014 | Wharfedale Speakers & Subwoofers

1 Answer

On my Sansui sw-100 sub, I have 2 speakers connected to the high level output, that dont operate


Yes in order to have audio going to your spare speakers from the sub .You would need to use the hi level inputs comming from the reciever outputs connected to these hi level inputs..The sub will then crossover the audio to their proper outputs..Hope this helps you

Jan 15, 2014 | Speakers & Subwoofers

1 Answer

Klh s120eth subwoofer not producing sound.


Normaly C26 has turned bad. It's 22uF/25V and is easy to access when module is disassembled.

Dec 29, 2012 | KLH Speakers & Subwoofers

1 Answer

Hook up lower level input to the audio source 230 subwoofer but can't get any sound for the speaker that is hook up through the speaker level input or output.


The speaker level connectors on the sub are for use when you DON'T have an AV receiver-style subwoofer output. They only pass-through from YOUR amp to other speakers. You should NOT use both Line level and Speaker Level input to the sub.

What is your electronics? Have you looked at the manuals?

May 02, 2011 | AudioSource System 230 / 235 System

1 Answer

Hi I have just got a JBL SCS200.5 BK, 5.1 loud speaker system. I am having the following problem with connecting the loudspeaker system. 1. I have a satellite TV reciever with a single Left, Right &...


I guess you didn't get the owner's manual, huh?

http://www.jbl.com/HI-IN/Products/Pages/ProductDetails.aspx?PID=SCS200.5BK/230

Where are the amplifiers in this scenario?

Page 8: The sub needs a subwoofer Line Level pre-out from an AV Receiver or multichannel processor. Though not elaborated on in the manual, the L and R Line Level RCA connections are probably for use if you lack a Sub Out feed. Running L and R from your receiver would allow the sub to derive a Sub Channel.

The rest of the speakers would connect to the AVR's speaker outputs.

Pasge 9: Alternate method if your eelctronics lacks a volume-controlled sub pre-out. This method routes only the front speaker level power to the sub so it can extract something resembling an LFE channel, then it routes speaker wire out to the front speakers, not as an audio power source but simply as a pathway.

You still need amplifier channels for all but the sub.

Apr 25, 2011 | Speakers & Subwoofers

1 Answer

When I hook up the speakers in the back to the left and right side for the in and out, do I connect the front or rear speakers. do the speakers connect to the subwoofer first then to my receiver or the...


I was trying to find an owner's manual or picture of the rear panel of the sub, but had no luck. The subwoofer is a powered type - or "active" speaker. This means it has a built in amplifier. These active subs usually provide for one or both "low level" and "high level" inputs. Low level signals are usually carried by shielded coaxial cables and have RCA type plugs on the end. The low level is also called "line level". This is an un-amplified signal that might be heard on cheap earphones - but that's about it. It is similar to the output of a tape deck, DVD or phonograph. These signals require an amplifier to be heard. If you have a sub woofer output on your receiver or amplifier, you could run a patch cable between the low level input on the subwoofer and the subwoofer output of the amp or receiver. You receiver or amp may call this output "low frequency effects" or similar. The front and rear speakers would then connect directly to the receiver or amp's corresponding connections.

If you lack low level outputs on the amp or subwoofer, you'll need to run speaker wires from the amplifier or receiver's front left and right speaker output terminals to the subwoofer's high level input terminals. High level signals are speaker connections or amplified signals. These are typically connections that accept bare wire connections. The front speakers would then connect to the subwoofer's front left and right speaker output terminals. The rear speakers connect to the amplifier.

I hope this helps - and good luck!

Nov 24, 2010 | Cerwin Vega AVS-632 System

1 Answer

How do I connect this subwoofer to my reciever


The simplest way is to insert the sub into the speaker wire run -- connect your receiver's speaker output to the sub input, then the sub output to the speakers.

These are the "High Level" connectors on the left side of your sub.

If your receiver has a subwoofer out (either one or a stereo pair) then you'll get better quality sound by connecting that output to the "Low Level" connector or connectors on the right. If you have stereo, then use both connectors. If your receiver only has one subwoofer output, then connect it to the left (may or may not me marked as "mono" depending on the age of your sub)

Hopefully that helps. If it's confusing, post back questions or post the details (brand and model) for your receiver.
If it's helpful, please hit the Thumbs-Up for me!

Oct 16, 2009 | KLH ASW10-120 Subwoofer

1 Answer

Too much bass...low end


Hi, have you tried adjusting the "subwoofer level", and or the "subwoofer cut" controls? Every sub I have ever seen has at least the level control on the back. The "cut or crossover" control determines the frequency at which the sub will start to respond. Additionally, you may need to access the appropriate menu on you reciever and adjust the "low frequency effects" (LFE) output level (assuming you have connected your sub to the reciever's sub output jack.

Hope this helps.

Jun 16, 2009 | Wharfedale SW150 Subwoofer

1 Answer

Subwoofer VERY weak


According to the KLH manual for the 9906 "6 pack" with the BassBite sub... it says "if your sub is connected via the speaker - level terminals, your reciever must be set for "NO" subwoofer - even though you are using one. VErify proper polarity on your speaker connection wires. (red or gold to +, black or silver to -). Depending on how you have your woofer connected to the reciever, if connected to a reciever without a subwoofer out then set your reciever for LARGE speakers and turn the subwoofer setting "OFF". Failure to do so will result in little to no bass. If you do have a subwoofer out from your reciever adjust your speaker size setting to small or large speakers as appropriate. Set the recievers sub output to ON. Connecting small speakers to a reciever set for LArge speakers can result in damage to small speakers.

Hope this helps.

Jan 14, 2007 | KLH HTA-4100 System

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