[BluStew335i]

Hows it going guys?

A quick run down of whats been happening.

I installed 2 JBL 1000watts and an Alpine MRP-500 last year into my e92. Played really hard, and really well for a very long time, until one of my subs blew. Ever since I've been running just 1 JBL. (still sounded great). Today i went out and bought myself another JBL, newer, but same power by the looks of it.

Once the two subs were put into its original box, I threw it in the trunk. Connected everything, turned it up, and nothing.

Disconnected the new sub, and it POUNDED. Sounded good as ever. Plugged back in the new sub, and nothing..Subs move like crazy, but no sound.

So I tried it the other way this time, thinking the new sub was defective. New sub pounded just as hard, but once I plug in the old one, I get no bass. The subs just move, but dont create any sound.

Basically, when both subs are connected, I'm not getting any bass. When either ONE is connected, it plays hard. Whats happening here?

Thanks in advance!

[808MGuy]

Originally Posted by BluStew335i

Hows it going guys?

A quick run down of whats been happening.

I installed 2 JBL 1000watts and an Alpine MRP-500 last year into my e92. Played really hard, and really well for a very long time, until one of my subs blew. Ever since I've been running just 1 JBL. (still sounded great). Today i went out and bought myself another JBL, newer, but same power by the looks of it.

Once the two subs were put into its original box, I threw it in the trunk. Connected everything, turned it up, and nothing.

Disconnected the new sub, and it POUNDED. Sounded good as ever. Plugged back in the new sub, and nothing..Subs move like crazy, but no sound.

So I tried it the other way this time, thinking the new sub was defective. New sub pounded just as hard, but once I plug in the old one, I get no bass. The subs just move, but dont create any sound.

Basically, when both subs are connected, I'm not getting any bass. When either ONE is connected, it plays hard. Whats happening here?

Thanks in advance!

Is one wired out of phase from the other?

[BluStew335i]

just checked it. it seems okay to me?

[skinrock]

Originally Posted by BluStew335i

just checked it. it seems okay to me?

You don't seem sure. Do you know how to check? Also, are you sure you know what impedance you're wiring to? If you wire them in series, you would effectively be getting a quarter of the power (e.g. at 4 ohms you are getting 400 watts for one sub, at 8 ohms you are getting 200 watts for two subs or 100 each, I know it's not always double/half, but you get the picture).

[BluStew335i]

I was told to run + and - from the amp, to + and negative on one sub. Then from that sub, run + and - to the other sub?