Question about Velodyne CT-80 Subwoofer

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Subwoofer will not work when connected

I have connected the subwoofer to the pre-amp out on the back of my dolby 5.1 receiver. The subwoofer has worked for a few years but now is not working. The power on the subwoofer still comes on, but no sound will come out. Receiver settings are for a subwoofer to be connected. I removed the subwoofer speaker from the unit and hooked the speaker directly to speaker wires for the front speakers and the speaker itself plays sound, so I know the speaker isn't blown. What can be the problem?

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  • Anonymous Oct 07, 2008

    my sub turns on but no sound...it was working for the first couple of weeks then all the lights on it stay on and no sound

  • Anonymous Nov 18, 2008

    I HAVE SAME ISSUE. I CAN'T UNDERSTAND THE SOLUTION

  • william miller Jan 03, 2009

    my yamaha sw 4 sub has 2 rcs inputs. tm Onkyo has 1 rca su cout. no sound connecrin fron sub out to either inputs on the sub. I have connected the sub to two audio outs on the onkyo to the two anputs on the sub and it seems to work, butn only at very low setting or it becoms thumping lousd. AAny ideas?

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  • 440 Answers

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

Posted on Feb 11, 2008

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Can u hook it directly to a lg tv tried but sounded really bad


What are your front channel speakers connected to? Or are you just using the TV speakers for that? Most TVs don't have a dedicated subwoofer output and that's a necessary level of pre-amp out to give the subwoofer proper low frequency signals. If you have an amp/receiver then it probably has a subwoofer output.

Feb 23, 2016 | Pioneer SW-8MK2 Andrew Jones Designed...

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Need wiring diagram for bass w x 10


You have not mentioned what equipment you would like to connect to this active subwoofer.
Assuming you have an AV Receiver, you will require a single long RCA to RCA subwoofer cable. Connect the left input (white socket ) of the subwoofer to the AV Receiver subwoofer pre output.
Leave the front crossover knob at 100Hz , Phase at 0. While playing an audio track slowly increase the subwoofer front volume to suit your taste. If you are using big floor standing speakers along with the subwoofer reduce the crossover frequency to 70Hz. Phase should be adjusted to blend the front speakers with the sub.bobhifi_6.jpg

Mar 09, 2011 | SpeakerCraft BassX-10 Subwoofer

1 Answer

Unable to receive optimum output. The bass is totally flat !


Hi, ok the Bose Acoustimass III system consists of two small cube speakers and one subwoofer unit called the Acoustimass bass module. If the subwoofer stops working, three points can be the cause of the failure. The Bose Acoustimass III is a passive system, meaning the speakers do not power themselves, but instead are connected to a receiver or amplifier. Thus, the amplifier, the speaker between the amplifier and the subwoofer, or the subwoofer itself could be the issue.

Things You'll Need:

* Amplifier
* Speaker cable
* Extra subwoofer


Instructions


Disconnect the speaker cable from the back of the Bose Accoustimass bass module and connect it to a subwoofer that is known to be working. If the subwoofer works, the bass module needs to be replaced.


Disconnect the speaker cable from the back of the receiver or amplifier you are using and from the back of the subwoofer in Step 1.


Connect a speaker cable that is known to be working between the back of the receiver or amplifier and the back of the Accoustimass module. If the module starts working, then the cable was the issue.


Disconnect the speaker cable from Step 3 from the back of the amplifier or receiver, then connect the cable to the subwoofer port on the back of an amplifier or receiver that is known to be working. If the subwoofer works, the receiver was the issue. If the subwoofer still does not work, verify that the speaker cable is in the subwoofer port of the receiver/amplifier and that the cable is connected securely to the subwoofer.



If you think you did the connection properly,Fine... If not you can use the manual from the below link and know how to connect it properly..

products.bose.com/pdf/customer_service/owners/og_am5iii.pdf


Have a nice day..

Feb 19, 2011 | Bose Acoustimass 5 III System

1 Answer

How do i connect my boston acoustics pv800 subwoofer to my Harmon Kardon AVR 520 reciever?


You need to use the LINE LEVEL connection on the pv800 (usually a rca type connector cable) and run this cable into the back of the HK 520 Subwoofer PRE-OUT connector, be sure the HK Receiver menu speaker set-up option is set to SUBWOOFER "YES"

Jun 06, 2010 | Boston Acoustics PV800 Subwoofer

1 Answer

My jamo sub 200 & pioneer vsx517 receiver is not working properly


What do you mean that it sometimes doesn't work? It doesn't power on automatically?
Check settings of your receiver - if it has subwoofer output enables and if low frequencies from all channels are directed also to the SUB. By default only the LFE channel (.1) of 5.1 signal input is fed to the subwoofer. So Sub will work in this case only when you listen to 5.1 signal (DVD movie for example), but for radio or stereo music, only front speakers are used. By configuring this bass redirect, you can use subwoofer for all signal types.

Feb 08, 2010 | Jamo SUB 200 Subwoofer

1 Answer

What wires go to the subwoofer to connect to a sony receiver


hi you should only need 1 rca going from the sub pre out to your subwoofer inout.

some subs require a stero signal coming in and you may need to pickup a Y adapter at radio shack.

Jan 02, 2010 | KLH ASW8120 Subwoofer

2 Answers

I have connected the subwoofer to the pre-amp out



One of two things may be going on.

The amp has a fuse mounted on the PC board. The fuse may be blown.

The speaker may be bad. that may have blown the fuse.

You can test the speaker with a "D" battery.
Take the amp section out of the back, disconnect the speaker leads.
Touch the speaker leads to the poles of the battery. it should make a little thump and the cone should move freely.

Contact Velodyne for service.

Dec 21, 2009 | Velodyne CT-80 Subwoofer

1 Answer

I just bought a KEF PSW2500 subwoofer and am trying to connect it to a Yamaha v663 receiver. However, I went from a subwoofer pre-out 1 to the right line in on the sub. I don't hear any sounds from the...


HI,go into the yam setup menu and make sure you have the sub turned on and cross over set to about 80hrtz if this suits your speakers,set sub level to about -5 on amp and say half way on the sub,this should work if not pull out sub cable at amp and touch the end,you should get a hum,if not you may have no power,faulty cable or sub.
PS>make sure you are pluged into the sub PRE OUT and NOT the six channel in.
Hope this helps.
CABLE GUY.

Apr 19, 2009 | KEF Audio PSW 2500 Subwoofer

2 Answers

How to connect 901 equalizer to a Pioneer VSX 47TX


I have a VSX-36TX so this is how it's going to work...

You will need a separate stereo amplifier for the 901's to accomodate the need for the Active EQ. There is no way to separate your receiver's front L&R channel preamplifiers from their amplifiers.

I run a Carver AV-406 (5-channel amp) for my 901's in Front, 2 Subwoofers and the Rear Surround channel, with the Active EQ between the receiver and the 901's amp channels. My receiver controls everything and just drives the Center and Surrounds. You would probably just get a nice 2-channel amplier for the 901's. However, the VSX 47TX doesn't provide power for a Subwoofer, should you decide to get one, so you would need another amplifier channel for that, too. Therefore, you might look around for a powerful 3- or 4-channel amplifier so you could drive the Sub, too.

Modest amps would work but at very loud volumes may go into clipping, which is bad for any speaker. I'm using only 100W for mine and it has plenty of steam for the 901's.

For connection I would run a pair of RCA cables from the Front L&R Audio Line OUT to the Active EQ's Line IN; then the EQ's Line OUT to a separate amp's Line IN. Attach the 901's to the new amp, run through the receiver's setup procedures for volume, etc and you're done.

Not what you might want to hear but 901's have special requirements. I've had mine for 25 years and have no regrets.

A separate subwoofer channel on the amp could be used. Just run a single RCA channel from Sub OUT to one available channel IN on the amp and attach the subwoofer to it. Two would work, also. That's what I do. You could use a 1-2 RCA splitter to feed two avaailable channels on a 4-channel amp. The iterations are many. Have fun.

Jan 24, 2009 | Bose 901 VI Main / Stereo Speaker

2 Answers

No Output Subwoofer


hi, ya , some recievers have its setup where u have to enable the sub out,, check the menu carefully, also the player menu if the sub is on or off, let me know..

Jan 10, 2008 | Sony SA-W305 Subwoofer

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