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Subwoofer unit not powering on

I have a warfedale dvd60st subwoofer + amplifier built in. this means that i can physically unscrew the amp off the subwoofer.
my problem is that the unit is not powering on. i opened and checked fuses, all ok. can u please assist me ?

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    I dropped my boombox (about 2 feet). The light comes on after plugging it in, I press power button and get nothing. A simple fix? Please help. Thanx

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Your sub woofer's transformer is probably damaged...You can check for this using a multimeter..Also check for any open circuits btween the transformer and the power suply..Most likely its the transformer itself check this first..

Posted on Oct 30, 2007

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Posted on Jan 02, 2017

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Kenwood radio rca sub outs. How do I hook up a sub and will it work without an amp


You can't, unless it's a sub with a built-in amplifier. A subwoofer pre-amp output is meant to be connected to an amplifier, not directly to a subwoofer. You must have an amp to drive a sub.

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Where can I get a Amplifier Warfedale S-991 or spare transformer for this unit


Hi Dave. One just finished on the bay. http://www.ebay.co.uk/itm/Wharfedale-S-991-Amplifier-mini-H-Fi-integrated-amp-/230791689518 They may still have it ?

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Hi! I have a Jensen XA2150 Amplifier, from the speaker output I have connected a Subwoofer Sony 10 inch 1100W. Tha'ts gave me a nice bass sound, but now it's death! The amplifier have a 25A fuse,...


Have you checked the fuses inside the amp?Unscrew the cover and with the amp sitting on its back,remove the cover.You have 2-4 fuses,old round type,in there.

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I have a subwoofer and speakers from a surround sound system but the dvd part has blown up can i use the subwoofer and speakers with another unit


sure u can. but depends either your system is active or passive. active means the speakers (or sub) driven by built-in amplifier, so the dvd delivers a low signal to the speakers amp and they amplify the sound for the speakers. passive means the amplifier is built into the dvd and delivers the amplified sound signal to the speakers thru speaker cable. if you tell me model number and brand i can find out what type they are.

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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!

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I am trying to replace all the factory speakers in my 2003 mountaineer i think there is a sub i want to run all the aftermarket speakers to an aftermarket amp if there is a sub can i also run it to a amp...


no problem with replacing all speakers with ones that are compatable wth you new amp .. and that means the the speaker impedance has to be wtihin the range of what the amp can drive (like 4 ohm, 8 ohm, 16 ohm) .... the subwoofer needs inputs from both left and right channels .. it also needs its own amplifier and low pass filter .. this all may be built into your after market amplifier .. if so you will have an output marked sub (that will directly drive the subwoofer) .. or you may have a low level outdput marked sub that goes to your subwoofer amplifier if it has one .. .. sometimes the woofer has its own built in amplifier and filter .. it then just needs power and inputs from each channel .. since you are running 500 watt speakers, they likely already have a subwoofer component .. (speakers that extend down to 20 hz or lower .) if so, you may not need an additional sub-woofer .. just make sure all the speakers are phased correctly .. (wired to work together not fighting each other ..) .... an amplifier capable of driving 500 watt speakers can draw peak currents that are very high .. so power wiring would have to be very heavy and preferably go directly to the battery with an inline fuse right at the battery ..

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1 Answer

Receiver cannot recognize subwoofer


As I implied earlier, take a clue from the physical style of connectors for both parts of the subwoofer function in the old and new receivers:

RCA connections are for Line Level signal between components only.

The input (bare wire) at the speaker is for AMPLIFIED signal.

You can't just modify one to fit the other and expect magic to happen. Be glad you didn't do it the other way around and modify an amplified (speaker level) outout into a Line Level input. You likely would have smoked that component.

Your subwoofer is a passive speaker, that is, like any other speaker it needs an amplifier. Many subs are self-powered (amp built-in) and they would mate well with the RCA sub output of the receiver.

Get yourself an Active (self-amplified) Subwoofer and run UN-MODIFIED RCA cables to it, according to its instructions, from the Sub Out of the receiver. Or get an amplifier between your receiver and the sub you have.

Feb 21, 2010 | Pioneer VSX-D607S Receiver

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Can i connect the amplifier and subwoofer to the built ford fiesta radio


If your amp has rca jack inputs only you will need in-line filters to reduce the stock stereo speaker outputs down to less than 3 watts. If your amp has high power inputs you can use those. If your amp does not have a built-in crossover then you will need to install a low-pass crossover or filter before the amp so the only the bass comes thru or the sub woofer will have major distortion. Another problem is the amplifier needs a turn-on signal for the blue wire and most factory radios do not have one. That means you will have to tie that wire into the switched 12v wire from the vehicle so the amp comes on when the key is switched on. It can be done be done but I don't think you will be very impressed with the sub due to most factory stereos have a limited bass range. Most aftermarket head units have built-in crossovers and sub outputs. They also produce much better sound than the factory unit. So in other words yes you can.

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Technics S600 Mk 3 Amplifier suffering cut out afer approx


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Sep 04, 2009 | Audio Players & Recorders

1 Answer

Which capacitor or resister we use when connecting tweeter with subwoofer, or what do we connect to the subwoofer to get more bass ?


Hello johnwisam,

When using component speakers, it is normal to connect the head unit or amp outputs directly to the woofers and use a "high-pass" filter to the tweeters. Most component speakers sold as a set will include the correct filter along with wiring diagrams. The12volt.com web site shows examples of passive crossovers here.

Amps usually include built-in filters and a means of setting crossover frequencies according to the speakers attached. If the amp is connected to full-range speakers, it is set to "Full" or "BP". When used to drive subwoofer(s) only, the setting is most often "low-pass".

Most stock radios and aftermarket head units are relatively low power and just do not produce enough power output to drive subwoofers adequately. It takes more watts to move the larger cones and that usually means a separate amplifier.

Hope this helps.

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