I have 2 of these

http://www.lightningaudio.com/produc...n_US&p_status=

and 1 of these

http://www.lightningaudio.com/produc...9&locale=en_US


I got them free from my friend, i haven't hooked them up yet and i was wondering how they would sound?

and should i have them pointing towards the front or the rear of the car, oh and BTW i have a 97 neon. and i have all the wires for them.

Thanks for the help

 

Lightening Audio use to be a low end budget sub and amp made by Rockford Fosgate and sold at Walmart, Meijer, and parts stores.

The subwoofers should face the rear of the car.

The amplifier is under powering the sub-woofers by about 75 watts each. You can not bridge the amp unless you wire the sub-woofers to an 8 ohm load. Which means wiring them in Series instead of parallel. The reason is, the subs when in parallel would have an ohm rating of 2 ohms, but when you bridge the amp, the amp "sees" 1 ohm. (Causing the amp to cut out and get hotter then usual, effectively reducing its' life.) So, wiring the subs to 8 ohms, the amp will "see" 4 ohms.

As for sound, you will notice them, but they are nothing going to make your car be noticed driving down the road.

Your probably wandering how to wire the subs to 8 ohms.


Don't forget to run the power wire through the firewall.



Almost forgot. You can wire the subs like that on the back of the sub box at the terminals.

 

Incorrect. The amp will run the ohm load given. When you wire series parallel with 2 single 4 ohm woofers, your amp will hold an 8 ohm load. To make it easier for you, just wire a sub on each channel parallel. Each sub on its own channel (just the pair that match) positive to positive and same for negative. That is all you can do.

 

I am very much correct. The subs wired to each channel would give the amp a 4 ohm load at each channel. The amp at 4 ohms is 75w rms. The subs are rated at 150w rms. 75 watts short of delivering the true power to the subs. If the subs are wired to a single channel, the load would be 2ohm. If you bridge that amp, the amp "sees" a 1 ohm load.

You are under powering the subs. The only thing you are correct on, is the amp will play the subs. In parallel the ohm load is 4 and your not correct about that is the only way it can be wired. I showed how he can wire different and gain an additional 25 watts per sub.

 

Your amp does not decide what ohm load you are at, your woofers do. You run these woofers in series at a final ohm load of 8 ohm, your amp is at 8 ohm bridge. Run each sub parallel to its own channel and you will see a 4 ohm per load.

Not understanding how you can say an amp is "seeing" a different ohm load than nominal. You run 2 single 4 ohm subwoofers to a mono amplifier, they are sitting at 2 ohms and the amp runs at 2 ohms.

Yes I am correct, run them on each channel and you will see the SAME power as 8 ohm bridge. I have been doing this "the right way" for many years my friend. Not too mention built woofers for few years myself. Trust me, I know what I am doing and can teach you if wanted



EDIT::: After reading again, I do see how you are getting at the amp seeing a lower ohm load in bridge. Need to be a little more clear when typing that. It came off to me you were just saying an amp sees a lower ohm load than nominal. But yes, EACH CHANNEL not the entire amp sees 2 ohms per channel at 4 ohm bridge. At 8 ohm bridge each channel is performing at 4 ohms per channel.

And how are you getting 25 watts more at 8 ohm bridge than 4 ohm parallel? Please explain that. Never said 4 ohm parallel was ONLY way to wire, I stated that because it is easier for the new comers to audio. You made a simple solution difficult for an inexperienced user.

 

I am very much aware that a speaker creates the load for the amplifier. I am aware that in bridged mode that the channels share that load. I knew the channels were operating at 4ohms. I, also, know if you wire those subs in parallel the amp has a 2ohm load which is not supported in a bridged configuration because the channels in the amp are operating at a 1 ohm load. I am aware wiring the subs, if they were 4 ohm DVC wired in series parallel, to a bridged channel would result in a 4 ohm load and cause the channels to operate at 2 ohm, which is supported by the amplifier.

I too have built speakers in my past along with boxes and circuits. I have 20 years (going on 21) experience and I am Advanced MECP certified or for some of the old school guys it was called First Class back in the day. I have been in the business long enough to have seen Rockford Fosgate as a start up company. Maybe I wasn't clear on what I was saying, but it was still correct none the less except on the 25 watt gain; that I did read wrong.

 

It's all good, just got to be careful how you word to new comers on the internet What speakers have you built and name of your company? Cause I mean I actually build and design woofers ground up Learning more on the amplifiers, but as of now focused on finishing my woofers and getting them going.

 

alright well thank you for your help, it turns out one of the subs is blown. So looks like im just going to hook up one sub bridged.

Looks like im just going to get a little more bass

Until I can get a better Amp/Subs

Thanks to both of you