Jvc i need a jvc subwoofer

There is only one RCA input.
JVC SPPWA670 Subwoofer SPPWA670

You need a subwoofer with speaker level dual inputs.

http://resources.jvc.com/Resources/00/01/33/35.PDF

http://resources.jvc.com/Resources/00/01/33/34.PDF

if you need a volume control for your amp try ebay

That subwoofer is included in the MHC-GX450 system. I have the amp/CD/radio unit. but not the subwoofer. The control cable connects the LED on the Sub to the main unit. When the main unit detects this connection to the LED it switches on its internal subwoofer amp to drive the subwoofer.

Does the JVC receiver use a "control" circuit through its external subwoofer unit to signal that it is connected to the subwoofer? If not, you do not need to use the control jack on the SS-WG450 to connect to the JVC receiver. Connecting the Sony subwoofer to a subwoofer output on the JVC unit may be enough. Do check the impedance required by your JVC receiver. Sony lists the SS-WG450 as having a Nominal impedance of 6 Ohms. Is this high enough for the JVC unit?

There are a few on eBay. Search for "JVC THM505 cable" and check the 'include description box'.

If you need the manual...

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/JVC-TH-M505J-Home-Theater-Systems-manual/id/318dj491/t/2/

You can get a complete refurbished JVC TH-A25 System on Amazon for $130. Individual components might be scarce or prohibitively expensive.

Hello pmdharan, It sounds like the subwoofer is not turned ON. Go to MENU ITEM > SPEAKER SIZE >SW (subwoofer) and select ON. Hope this helps.

Connection from receiver subwoofer output jack RCA plug male go into your powered subwoofer low level input with other end of cable, then you need to select Subwoofer YES/NO on the JVC receiver speaker setup menu option, select YES if this is a powered subwoofer you are using, should power up the subwoofer, may have to adjust a test tone balance for multi speaker output also, try trimming up on the subwoofer channel to initiate the signal on if the sub has an auto-on feature.

i need to find the wire that connects from the subwoofer it has like little spikes inside the medal part and the spikes broke off

Even if your JVC doesn't have outputs for a subwoofer you can hook it up with the a speaker wire to RCA converter. You just spice your rear speaker wires to this device then connect RCA's to your amp. I've used them before... works great. http://cgi.ebay.com/ebaymotors/Speaker-to-RCA-Line-Level-Converter-Adjustable-High-Low_W0QQitemZ130143832174QQihZ003QQcategoryZ38636QQcmdZViewItem