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Subwoofer blowing fuses, amp recommendation?

2448 Views 9 Replies 4 Participants Last post by  Wayne A. Pflughaupt, 
A
Hello all,

Went to watch avengers end game to find my sub was not working. Pulled fuse and it was blown. Ordered a 5 pack, installed new fuse, plug in and the sun buzzes real quick, which was kind of normal, but then no power. Pull fuse and it's blown again. Quick search tells me there an issue with the amp or possibly power supply. I pulled the plate of the sub to check it out and if course everything looks fine.

It's a sub in a 5.1 set, and it sounds really good with the speakers it's meant to go with. It's a 12" Pinnacle speakers qac20 sub. Obviously this thing is discontinued. I checked parts express and didn't really find anything that looks like it's a replacement. Would love to find an exact replacement but doubt that will happen. So i guess the next cheapest thing is an amp that will work, and i guess I'll just have to figure out the crossover and stuff.

I just have no idea what amp would be a close match to what's in there. Any suggestions? I use my receivers sub out connection to connect if that means anything.

Thanks.

imgur.com/a/JiCL3vz

Can post pic of amp itself it helpful.
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RayGuy
https://www.amazon.com/Pinnacle-PS-225-Discontinued-Manufacturer/dp/B0015AB7U6?SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duckduckgo-d-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B0015AB7U6

Try plugging into a different wall outlet.
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Wayne A. Pflughaupt
If you like the sub, it might not be hard to simply convert it to passive with an outboard amplifier. Check my signature for a “how to” article.”

Regards,
Wayne A. Pflughaupt
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darthray
Wayne A. Pflughaupt said:
If you like the sub, it might not be hard to simply convert it to passive with an outboard amplifier. Check my signature for a “how to” article.”

Regards,
Wayne A. Pflughaupt
Click to expand...
For the OP @ac2b
How to Convert a Dead Subwoofer to Passive

Nice site you got, by the way.


Darth
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RayGuy said:
https://www.amazon.com/Pinnacle-PS-...=2025&creative=165953&creativeASIN=B0015AB7U6

Try plugging into a different wall outlet.
Click to expand...
I did try this but no luck. I also found that sub on Amazon, was hoping to just get the board for cheaper but no luck on that.

Wayne A. Pflughaupt said:
If you like the sub, it might not be hard to simply convert it to passive with an outboard amplifier. Check my signature for a “how to” article.”

Regards,
Wayne A. Pflughaupt
Click to expand...
Thanks i will look into this. I had a passive sub before in some cheap 5.1 system, and it sucked. Was quiet and might as well not even been there imo. Would that be the case with this sub? It is considerably better than that pos thing i had like 20 years ago.

I know it's not the greatest sub but its designed to and works very well with the main speakers. Really did the like sound out of it.
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Wayne A. Pflughaupt
I think the operative words there are “cheap system,” not the fact that the sub was passive. I mean, most earth-shattering DIY subs are passive. At the PS225’s price range it probably didn’t have any on-board processing except limiting, so with a comparably powered outboard amplifier it will sound as good as it did originally. The PS225’s amp was rated at 225 watts, which is probably generous as there are no further qualifiers. Who knows, that might have been a peak figure at 15% distortion. I expect a good 150-watt amp would work fine, or worse case 200 watts. Find something used on Craigslist, ebay or a pawn shop and you'll get this thing up and running again for less than the price it would cost to replace it.

Regards,
Wayne A. Pflughaupt
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A
Wayne A. Pflughaupt said:
I think the operative words there are “cheap system,” not the fact that the sub was passive. I mean, most earth-shattering DIY subs are passive. At the PS225’️s price range it probably didn’️t have any on-board processing except limiting, so with a comparably powered outboard amplifier it will sound as good as it did originally. The PS225’️s amp was rated at 225 watts, which is probably generous as there are no further qualifiers. Who knows, that might have been a peak figure at 15% distortion. I expect a good 150-watt amp would work fine, or worse case 200 watts. Find something used on Craigslist, ebay or a pawn shop and you'll get this thing up and running again for less than the price it would cost to replace it.

Regards,
Wayne A. Pflughaupt
Click to expand...
Thanks. I checked out your site the other poster linked and sadly my sub doesn't have speaker wire connections, so either way i gotta buy something. Thanks for the help
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Wayne A. Pflughaupt
You can install your own speaker terminals. It’s a piece of cake – all you need is a drill. There’s probably a blank section on the back panel somewhere.

https://www.parts-express.com/dayton-audio-bpa-38g-hd-binding-post-banana-jack-pair-gold--091-1245

Regards,
Wayne A. Pflughaupt
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Wayne A. Pflughaupt said:
You can install your own speaker terminals. It’️s a piece of cake – all you need is a drill. There’️s probably a blank section on the back panel somewhere.

https://www.parts-express.com/dayton-audio-bpa-38g-hd-binding-post-banana-jack-pair-gold--091-1245

Regards,
Wayne A. Pflughaupt
Click to expand...
Awesome. 1 more question, do i need a separate external amp or will my receiver do the job? It's a Denon avrx 2400h. Would i do a left and right channel? Which speaker output would be good to use?
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Wayne A. Pflughaupt
You will need an external amplifier to replace the dead one your sub had on-board. Most external amps are stereo – you can use either channel.

Regards,
Wayne A. Pflughaupt
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