Question about KLH HTA-4100 System

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Subwoofer VERY weak

I've had trouble getting adequate sound from the subwoofer w/this speaker set. i've got the subwoofer set to PLUS on my receiver, and the relative level for the sub on 10 (as high as it will go), and the gain on the subwoofer itself almost ALL the way up, and it still sounds weak. i'm not trying to shatter my windows, just get a nice full warm sound, but i'm barely getting anything out of it. i've tried the sub on multiple receivers, so i know that's not the problem. any thoughts?

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Re: 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.

Posted on Mar 07, 2011

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Jamo d6sub

Simple things first:

Is it powered on? (sorry, I know that's too elementary)
Is it connected properly? (you have a cable securely plugged into your receiver's subwoofer line level output and securely plugged into the subwoofer in in the subwoofer)
Is your system configured properly to send a signal to your subwoofer?
  • Does your receiver have a menu system you can use to manually configure your speakers?
  • If it does, have you told your system that you have a subwoofer?
  • If it does, have you set your other speakers to "small" (believe it or not, even with full-sized floor standing speakers this is a good practice)? Sometimes, if the other speakers are set to Large, an AV receiver may not output a subwoofer signal.
  • Check all the rest of your receiver's speaker parameters through its menu system.
  • On your subwoofer, do you have the Level turned all the way off?
  • Where is the cut-off frequency set? (if it's set too low, and your source material doesn't go down that low, you may not hear anything through it)

Is the cable good? (use a multimeter to check)
Is the receiver outputting a signal through the subwoofer out port? (again, use a multimeter to check)

That's all I can come up with for now. Good luck.

Oct 14, 2013 | Speakers & Subwoofers

1 Answer

Hi! I have purchased a JAMO S608 HCS 3 and a SUB 650 using an OKYO TX-SR508 Receiver. I can't set it up correctly. When I played music I've heard a lot of bass, I think there are some high...

The TX has speaker setup and test tones for setting the balance and distance with test tones and proving the hardware works. If that all works the difference is probably external or settings.

What is different between the music source(s) audio and the HD movie source(s) audio? Ask yourself, how would a sub make high frequencies go missing? It can't.

Your other speakers are responsible for conveying the high frequencies.

Sep 08, 2011 | Jamo SUB-650 Subwoofer

1 Answer

I get a red light on the back panel labeled power. No green light. I don't think the PV 600 is working but when I run the channel check through my Pioneer THX receiver I hear sound. Any thoughts?

The PV600 and PV400 have auto-on circuitry that turns the subwoofer on when a signal is presented, and turns off if no signal is detected for 15 minutes.

Not knowing which Pioneer receiver you have I have dropped in the steps for No Sound from Subwoofer:

• Check that the subwoofer is connected properly, switched on and the volume turned up.

• If your subwoofer has a sleep function, make sure it is switched off.

• Make sure that the Subwoofer setting is YES or PLUS (see Speaker Setting on page xx).

• The crossover frequency may be set too low; try setting it higher to match the characteristics of your other speakers (see Speaker Setting on page xx)

• If there is very little low frequency information in the source material, change your speaker settings to Front: SMALL / Subwoofer: YES , or Front: LARGE / Subwoofer: PLUS (see Speaker Setting on page xx).

• Check that the LFE channel is not set to -80dB , or a very quiet setting (see Bass Peak Level

on page xx).

• Check the speaker level settings (see Channel Level on page xx).

Regarding the Large vs Small assignment of speakers, what they mean isn't so much the physical size but the ability to handle real bass. Large if Yes.

Jan 12, 2011 | Boston Acoustics PV600 Main / Stereo...

1 Answer

Hello Audio Gurus..This is my 1st time on here.. I always loved music and I have decided to raise the bar a little in terms of sound considering that I enjoy listening to music more then 2 hrs a day.. I...

No, the CV speakers are very efficient speakers. That means they create a lot of volume for the amount of power. I will start by saying you will be relatively happy but not blown away.

The HK is an alright HT receiver (very new and feature loaded). It makes a rather weak stereo receiver for it is made for a home theater environment. If you only have a pair of speakers (optimal for music listening) then you have paid for a bunch of other channels that will remain dormant. You would be best off to get a very high-power stereo receiver or integrated amp instead of your HK.

CV speakers are built to blast, but they sounds pretty good at the same time.

Feel free to ask me any audio related question, I've worked in the industry for a good part of my life.


Jan 05, 2010 | Cerwin Vega LS-15 Speaker

1 Answer

Replacing sub speaker

I wouldn't try reinventing it by replacing the driver. Drivers and their enclosures are designed to work together. And this being a self-amplified subwoofer, there is one more piece that's electrically optimized to the rest. Don't mess with it.

Why don't you just set your receiver's individual relative speaker volume levels so the sub isn't weak by comparison to your other speakers? Weakness, as you call it, is relative.

Is your receiver properly channeling Low Frequencies to the sub? Experiment with the cutoff, too.

This problem doesn't require meatball surgery.

May 18, 2009 | Sony SA-WM500 Subwoofer

2 Answers

Subwoofer goes to sleep

The receiver automatic speaker set-up set the sub volume at -12 and since it was not getting any signals from the receiver it was doing what it is supposed to be doing (going to the standby mode). This was troubleshooted by Onkyo tech support on a Sunday. All the best about Onkyo customer support.

Apr 12, 2008 | Speakers & Subwoofers

1 Answer

Subwoofer will not work when connected

cheak setting in sterio out put for sub on ect does woofer have sperk wire going in and out use them then ok

Feb 11, 2008 | Velodyne CT-80 Subwoofer

2 Answers

Lost instructions

The 'Subwoofer' output on your receiver is used to connect to a powered subwoofer with a built in amplifier. Your KLH speakers use what is called a 'passive' subwoofer, it gets its power from the receiver and then passes the higher frequencies to the left and right front speakers after taking out the low frequencies for the subwoofer. A speaker system with a passive subwoofer is good for casual listening, but a powered subwoofer is required for really hearing low frequencies and rumble in movies. The KLH speakers you have were highly rated in their time for their price. The four satellite speakers and center channel speaker have very good sound compared to the little 'midget' surround sound speakers most people buy today.

Here's how you hook them up:

- The left and right front channels from your receiver terminals should go to the terminals on the subwoofer marked 'From Amplifier'
- Your left and right front speakers are then connected to the subwoofer terminals marked 'To Speakers', they do not connect directly to your receiver.
- Your center speaker is connected to your receiver terminals marked 'Center'
- Your rear speakers are connected to your receiver terminals marked 'Surround'

That should get you up and running. If the bass isn't good enough with the passive subwoofer, you can get a decent powered subwoofer like the Velodyne VX-10 for about $150 and 'kick it up a notch'. Good luck and enjoy....

Jan 07, 2008 | KLH HT-9900 System

1 Answer

Subwoofer cuts out

Its due to the damaged pin in which you r inserting the subwoofer pin!

Dec 08, 2007 | Speakers & Subwoofers

1 Answer

Cerwin Vega ve-28s subwoofer and new Cervin Vega 2-way satellites

I bought my VE-28s and it did exactly that crackled, cerwin replaced part in amp but few months later problem persisted. they then replaced entire amp assembly and its been fine. i really push it to and its been fine. to test it, unplug the connection from amp/ reciever and see if it persists. if so its the sub, if not its the amp/ reciever. dont dump it, these subs really crank and can put out some deep loud bass.

Oct 28, 2007 | Cerwin Vega VE-28S Subwoofer

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