Infinity's problem or mine???

[sonic232stang 10+ year member]

I bought a reference 1040 from crutchfield for $60 shipped. I have it set up in a sealed box wired to a Kenwood 600 watt amp. 2 hours after I had a audio shop install it......the voice coil broke so I thought it was a defected sub.

Crutchfield replaced it with a 1050 infinity reference sub and i had it installed just 2-3 weeks ago. The bass is on the lowest settting but it bumps great. I loved both of them, but just today the sub isn't working again. I think its another voice coil problem but I haven't taken it out to see for sure.

Am I doing something wrong, can my luck be that bad.....or is it the audio shops problem, or amps problem......i'm lost.

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[project f-150 10+ year member]

i have seen a common problem with the tinsel leads breaking on infinity woofers. if thats your problem its def. not your fault.

 

[15nissen 10+ year member]

that was the first amp ive ever owned.....

i owned infiniy reference subs and honestly i went through 4 sets. thank god for CC and there extended warrenty...i was most likley sendin them a clipped signal and wangin on them hard...they just in my opinion dont last. not to mention distortion kills subs

 

[sonic232stang 10+ year member]

From the last sub, it looked like it could be saudered by on, but i don't want to go that route if it happened to this one. I'm sure its not blown, so that is why i think the voice coil broke off again.

Well, I guess I'll have to have them send me another one. ANy other ideas on why this happens......how can I prevent this, i mean the reason its a sub is to provide bass, I don't think having the volume raised just a bit should do this.

 

[sonic232stang 10+ year member]

that was the first amp ive ever owned.....

i owned infiniy reference subs and honestly i went through 4 sets. thank god for CC and there extended warrenty...i was most likley sendin them a clipped signal and wangin on them hard...they just in my opinion dont last. not to mention distortion kills subs

Its a perfect match for my amp though. DO you suggest something else within the $60-100 range that I can replace as a new sub from crutchfield? Its aggrevating to have this happen, but I really liked the sub......it sounded great.

 

[SAG3 5,000+ posts]

From the last sub, it looked like it could be saudered by on, but i don't want to go that route if it happened to this one. I'm sure its not blown, so that is why i think the voice coil broke off again.
Well, I guess I'll have to have them send me another one. ANy other ideas on why this happens......how can I prevent this, i mean the reason its a sub is to provide bass, I don't think having the volume raised just a bit should do this.

you think the voice coil broke off?

 

[revrider1 5,000+ posts]

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[sonic232stang 10+ year member]

you think the voice coil broke off?

I don't know what they are called. But when you take the sub out of the box its in, underneath there are 2 little things that look saudered on. I figured they are the voice coils. Either way, why would they break on my past 2 INFINITY subs?

 

[SAG3 5,000+ posts]

its a tinsel lead not a voice coil

 

[sonic232stang 10+ year member]

Well, the tinsel lead is what i'm talking about then. Sorry I don't know much about audio, that is why i joined up! LOL.

 

[Blazin_Jason 10+ year member]

I'll also add that I was running a 1230 and broke the tinsel lead off within minutes of it being installed. I re-soldered it back on about 3 times over a couple month period. Then changed it out with a type r. Infinity sits in the closet.

 

[sonic232stang 10+ year member]

Where can I get it resolder it at? I guess its a common problem with infinity's. I just don't want to resolder it and then it void the warranty, i'll probaly just send it back and get a replacement.

 

[Blazin_Jason 10+ year member]

Not too sure where ya could get that done, but check to see if it voids warranty. Also after resoldering it back on for the 3rd time, I turned down the gain on the amp to the point where it didn't sound so good. Then upgraded the sub to something that was inexpensive and could handle the power and be loud enough (type r).

On a different note. I have an older type r that the tinsel lead broke off. So what I did to fix it was: lengthenned the lead about a 1/2" with some solder wick/braid, and used a piece of plastic tubing about an inch long around the tinsel lead glued to the base of where the tinsel lead is attached to the terminal. I used goop as the glue. This took the back and forth action that brakes the lead away. Good as new.

 

[El Ropo 10+ year member]

Infinity subs are famous for not handling their rated RMS power, and you are feeding yours 50rms (depending on how the gain is setup) more than they are rated for. That amp is a KAC-729S, and is rated to put out 300 watts rms bridged. The sub is rated to handle 250 rms, and they don't really even like that much power unless it's a sealed box that is no larger than recommended sealed volume, which is .75 cu ft.

What type of box? What is the volume? If ported, what is the tuning frequency?

That amp also doesn't have a SSF (sub sonic filter for you newbs), so if you have a ported box that's tuned high, say 40 hz, you could be unloading the sub really bad while playing low bass material such as LNT, etc.

 

[sonic232stang 10+ year member]

Infinity subs are famous for not handling their rated RMS power, and you are feeding yours 50rms (depending on how the gain is setup) more than they are rated for. That amp is a KAC-729S, and is rated to put out 300 watts rms bridged. The sub is rated to handle 250 rms, and they don't really even like that much power unless it's a sealed box that is no larger than recommended sealed volume, which is .75 cu ft.
What type of box? What is the volume? If ported, what is the tuning frequency?

That amp also doesn't have a SSF (sub sonic filter for you newbs), so if you have a ported box that's tuned high, say 40 hz, you could be unloading the sub really bad while playing low bass material such as LNT, etc.

THe box is a regular sealed box. When i get the new sub, i think i'll lower the gain control and see how it works out. The sub bass was great, but it could be lower.....hopefully that does it.