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Re: are these speakers any good?
These would make great secondary subs if your going for an elaborate install, but in the end even cheap no name subs will sound good if coupled to a good amp. The best way to know is to test them, push on the cone and feel it's resistence, if it feels tight, they should pound, if not, be careful.
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Dang, those subs are so oldschool i'm surprised that it hasn't decomposed yet. I haven't heard the name Audiofonics in a while. I tried looking also but only found videos of them on Youtube. What specs were you trying to get? Parts express sells a speaker testing device that will give you all the data from the speaker that you need, including Thiel small parameters. It's called the DATS V2 and runs about $100 bucks. you might find something similar on ebay.
It may not be worth the expense, but if the cone or surround are torn, they can be replaced by a speaker repair shop. I just had a pair of JL 10W6's re-edged (the foam surround around the cone deteriorated after 11 years), and the repair cost $100 for the pair, including parts.
Active / Passive Speakers
Pair of Speakers, Subwoofer
Number of Ways
Size (Diameter) in mm
Do yourself a favor do not get anything Pyramid they are cheap for a reason and you will not get good bass response from them even in a optimal enclosure.If you want nice bass for little money go with lanzaropti 1535D sub you can pick one up for around $265 and will blow away Pyramid any day.
make sure all your gains are turned up to atleast half.
Check your head unit, make sure your low pass frequency for the RCA's amp is set to high or set to more than 0. Make sure you don't have your fader set toward the front of the vehicle or you won't get any bass, but the subwoofer will be pulling only what the head unit is sending to the amplifier.
if that doesn't work I would try another pair of patch cables.
Do you have another subwoofer you can swap out to test your subwoofer with?
I have a subwoofer that has something wrong with the coil itself. Has your amplifier blown any fuses? If so the subwoofer coil is bad.
Also make sure you have a solid ground for your amplifier.
Hope this helps!