Help with subwoofer no sound

[smokiedawson]

Hi all, if anyone can help with the following it would be most appreciated as I'm out of ideas.

Equipment:
- Subwoofer DB Dynamics – Model Belmont SW8BR
Power 80 Watts
Frequency response 40-150Hz

Receiver: Onkyo TX-SR393

TV connected to Receiver Samsung Model – UA50KU6000W

Speakers – US Audio – Model US760CH
Power Handling: 150W – these figures taken from front towers.
Freq Range: 20Hz – 20kHz
Impedance 6 ohm
2 Front Tower, 2 Rear surround, 1 centre

My issue is I seem to get no sound from the subwoofer.
I have tried messing with the crossover etc, made speakers small, fronts and centre set to 80hz, surround set to 100hz and LPF of LFE 120Hz.

I get good surround sound, just seems to be nothing from the sub.
It was my dads and hadn't been used for a while. It has a digital display on the front, and have set volume with the remote to halfway, and frequency to 120Hz.
It is connected to the receiver via a subwoofer cable red/white into sub, one into receiver sub output.

I used to have an old sub which worked fine with this receiver, but wven the callibration doesn't pick it up this subwoofer, and i feel nothing with music pumping etc.

Any ideas anyone as to what else i can try?

Cheers

 

[lovinthehd]

Do you get any vibration from the sub's driver cone at all (put your fingers on it) while you play something with significant bass content? If calibration can't pick it up it could conceivably be just too low a gain setting on your sub amp....did you try full gain too? Your cable/adapter is good, has been tested somehow?

Sounds like you're doing the right thing by making speakers small and setting crossovers; setting for LPF of LFE is fine (if the sub's low pass filter can be turned up higher than 120 would be the only suggestion I'd have in general but shouldn't have much effect).

 

[William Lemmerhirt]

If you’ve set it up correctly, and from your notes it seems to be. I would say it is probably shot. Plate amps are notorious for failures. And I’ve never heard of them before. Are you down under? That was something I noticed when I tried to find info on it, other inquirers were in Australia.
Also, respectfully, it’s not very capable as a subwoofer when the frequency response is listed from 40hz to 150hz. It should at least go down to 25, while a higher quality one will be at least down to 20. I’m sorry if this is an attachment due to being your fathers, but I would move on from it. I mean no disrespect.

 

[smokiedawson]

HI, yep tried the cone check with the finger and get nothing. With the gain do you mean Volume? Ive turned up the volume to 3/4 and turned up the frequency on the sub to 150, thats as far as it goes.
The cable is brand spanking new, so shouldnt be an issue, but will try my old red white cable that worked before just to make sure. ill be back in touch soon. cheers for responding.

 

[smokiedawson]

If you’ve set it up correctly, and from your notes it seems to be. I would say it is probably shot. Plate amps are notorious for failures. And I’ve never heard of them before. Are you down under? That was something I noticed when I tried to find info on it, other inquirers were in Australia.
Also, respectfully, it’s not very capable as a subwoofer when the frequency response is listed from 40hz to 150hz. It should at least go down to 25, while a higher quality one will be at least down to 20. I’m sorry if this is an attachment due to being your fathers, but I would move on from it. I mean no disrespect.

yeah nah that's totally fine, i do have an attachment to it as have waited years to get back from Tasmania to South Australia and really disappointed it doesn't seem to be working. Its been sitting idle in mums cupboard for 6 years! so not like its been overworked.
But yep as you say, probably cooked, I have no idea about the internals of these things, so guess if it doesn't want to play ball I should get another. They are so expensive in Australia! makes me wanna cry when I see your prices and choices

 

[William Lemmerhirt]

Also. If you leave the cable plugged into the sub, but unplugged from the AVR, and you bump the plug with a finger or thumb, does it make sound?

 

[William Lemmerhirt]

yeah nah that's totally fine, i do have an attachment to it as have waited years to get back from Tasmania to South Australia and really disappointed it doesn't seem to be working. Its been sitting idle in mums cupboard for 6 years! so not like its been overworked.
But yep as you say, probably cooked, I have no idea about the internals of these things, so guess if it doesn't want to play ball I should get another. They are so expensive in Australia! makes me wanna cry when I see your prices and choices

Yeah we are a little spoiled like that! Seems odd that you guys don’t have better options.

 

[smokiedawson]

If you’ve set it up correctly, and from your notes it seems to be. I would say it is probably shot. Plate amps are notorious for failures. And I’ve never heard of them before. Are you down under? That was something I noticed when I tried to find info on it, other inquirers were in Australia.
Also, respectfully, it’s not very capable as a subwoofer when the frequency response is listed from 40hz to 150hz. It should at least go down to 25, while a higher quality one will be at least down to 20. I’m sorry if this is an attachment due to being your fathers, but I would move on from it. I mean no disrespect.

Could you possibly have a look at this, and see if you think it would be a good option? Bearing in mind its AU dollars, so think ok value, as dont really want to spend a huge amount.

Speaker Docks | Portable Speakers, Mini Speakers & More | MYER

Speakers at Myer. Free Delivery On Orders Above $99! 30 Days FREE Returns* Shop Our Range Of Speakers with Afterpay!

www.myer.com.au

 

[Teetertotter?]

Buy a replacement sub and trash the one that is not working.

 

[lovinthehd]

HI, yep tried the cone check with the finger and get nothing. With the gain do you mean Volume? Ive turned up the volume to 3/4 and turned up the frequency on the sub to 150, thats as far as it goes.
The cable is brand spanking new, so shouldnt be an issue, but will try my old red white cable that worked before just to make sure. ill be back in touch soon. cheers for responding.

Sounds dead, as was said an amp failure is the most likely culprit, too. Probably not worth dealing with the amp either for repair/replacement. Yes, on a sub amp gain adjustment is often marked volume. 3/4 gain should be sufficient to feel something, tho. Didn't ask before, you definitely told the avr a sub is in use?

Here's more info on the sub you linked http://w.pure-acoustics.com/design/v4/speaker.php?id=402. Not impressive specs, not familiar with the brand at all. I know its tough down under for subs, tho.

 

[William Lemmerhirt]

Could you possibly have a look at this, and see if you think it would be a good option? Bearing in mind its AU dollars, so think ok value, as dont really want to spend a huge amount.

Speaker Docks | Portable Speakers, Mini Speakers & More | MYER

Speakers at Myer. Free Delivery On Orders Above $99! 30 Days FREE Returns* Shop Our Range Of Speakers with Afterpay!

www.myer.com.au

Well I wouldn’t do backflips over it, but I know your neighborhood is notoriously hard on the sub market. So you could probably do worse! But I can’t find the specs so not sure. I do think it would be better than the failed one at least.
I guess I’d ask. How big is the room? How much do you really wanna spend?

 

[lovinthehd]

Well I wouldn’t do backflips over it, but I know your neighborhood is notoriously hard on the sub market. So you could probably do worse! But I can’t find the specs so not sure. I do think it would be better than the failed one at least.
I guess I’d ask. How big is the room? How much do you really wanna spend?

http://w.pure-acoustics.com/design/v4/speaker.php?id=402 not very in depth nor particularly impressive

 

[Trebdp83]

Check the fuse?

 

[William Lemmerhirt]

http://w.pure-acoustics.com/design/v4/speaker.php?id=402 not very in depth nor particularly impressive

Aye caramba… 35hz. It’s worse than I thought. I looked around on that site and it’s pretty slim pickins. Maybe in the morning I’ll go window shopping. See what I can find.

 

[lovinthehd]

Aye caramba… 35hz. It’s worse than I thought. I looked around on that site and it’s pretty slim pickins. Maybe in the morning I’ll go window shopping. See what I can find.

An unspecified 35hz....and seems to be the best sub Myer has to offer (was just watching a video about police doing a sting on shoplifters at Myers ....)

 

[William Lemmerhirt]

An unspecified 35hz....

Right?!?! Not a good sign. But I don’t know the brand. Maybe they’re pretty ok down there? Or maybe there’s a reason we don’t know them lol.

 

[smokiedawson]

Check the fuse?

powers on, get digital display on front, can change vol and freq so assume thats all good.

 

[smokiedawson]

Well I wouldn’t do backflips over it, but I know your neighborhood is notoriously hard on the sub market. So you could probably do worse! But I can’t find the specs so not sure. I do think it would be better than the failed one at least.
I guess I’d ask. How big is the room? How much do you really wanna spend?

just a small lounge room, nothing special, just like a little bass.

 

[smokiedawson]

Sounds dead, as was said an amp failure is the most likely culprit, too. Probably not worth dealing with the amp either for repair/replacement. Yes, on a sub amp gain adjustment is often marked volume. 3/4 gain should be sufficient to feel something, tho. Didn't ask before, you definitely told the avr a sub is in use?

Here's more info on the sub you linked http://w.pure-acoustics.com/design/v4/speaker.php?id=402. Not impressive specs, not familiar with the brand at all. I know its tough down under for subs, tho.

 

[smokiedawson]

yep it the av receiver def know a sub is present, well in the settings anyways, doesn't find it in the callibration though.