Sub/amp rewire...need help...again...

[bmccord]

Hey all, first off, I will explain the basics of my recently completed sub project. I have a 15” TC Sounds TC-3000 with twin 15” TC-VMP’s (passive radiators) tuned to 16 Hz in a 4.2 cubic foot enclosure. The TC-3k is a quad 1.4 ohm DCR (2 ohm Nom) voicecoil driver. After wiring my TC-3k in all series to net 5.6 ohms DCR (8ish Nom.) I have found that I have to turn the amp up 3/4 of the way and boost my LFE output to +4 (to bring the voltage up to what the EP2500 likes) in order to get the good healthy bass I like. The amp, a Behringer EP2500 is bridged as well.

Here is my question. Can I wire the sub to a series/parallel configuration and run the amp bridged? That would end up being 1.4 ohms DCR (2ish ohms Nom) without killing the amp. I don't like the idea of having the amp up that high.

The other idea is to pair 2 voice coils together in parallel and then drive each pair off a non-bridged channel. I am thinking that running a pair of VC’s at 1200 watts at 4 ohms each would be better than running the entire series of 4 VC’s at 8 ohms at the same power. I am not sure which route to go but I have heard the EP2500 is a beast and it seems I am just scratching the surface. In short, given the goofy wiring configurations of this driver, I am looking to get more power from the amp without melting it at some silly low impedance. Thanks again everyone.

 

[annunaki]

Running the amplifier at 4 ohms stereo (by running two coils in series) would essentially be the same as 8 ohms mono. Although, you may lower the distortion a bit. It should not have any difference in power output though. As long as you are not getting any noise with the amplifier up that high what does it matter?

The other option you could look into would be to sell the EP2500 and get two EP1500's and run each one bridged to each series wired pair of coils. You will have to make sure both amplifiers are receiving the same signal and voltage match their outputs though. Fairly simple to do with a good DMM a 4 ohm high power resistor and a test disc with sine waves.

Wiring each pair in series (4 ohms) and then those in parallel will get you a 2 ohm nominal load. I still would not reccomend that though as the amplifier is only stable to 4 ohms mono (Bridged).

 

[AVRat]

Don't know why they use 4 VCs, but would there be any consequence to run only two in series?