ppi 900.4 help

[riddla 10+ year member]

Hi guys. i have the above and i have a pair of ID Oem midrange rated at 150 rms 4 ohms and a pair of infinity kappa tweeter which are 2 ohm. can you tell me the best way to wire these up. can i bridge the pair of mids safely onf one chanel ? Then run the tweeters normally ? I also have everything running through an active crossover up front. thanks.

Click to read more...

 

[globalminds_ent 10+ year member]

Might be too power at 2 ohms bridged just watch your gains

 

[riddla 10+ year member]

These are the amp specs.

My speaker specs are ID Oem 150w rms @ 4ohm

tweeters are 2ohm can't remember the power

Just wanted to know its compatible and can i bridge the mids on 1 channel and use the other channel for the tweeters even tho there 2 ohm ?

One more question. say i wanted to hook 4 tweeters up. can I use to tweeters on each channel ?

RMS Power Rating (14.4V):*

4 ohms: 145 watts x 4 chan.

2 ohms: 225 watts x 4 chan.

Bridged, 4 ohms: 450 watts x 2 chan.

RMS Power Rating (12V):*

4 ohms: 100 watts x 4 chan.

2 ohms: 150 watts x 4 chan.

Bridged, 4 ohms: 300 watts x 2 chan.

 

[garychoffmann 10+ year member]

The only way you can safely run it is a mid per each channel and a tweeter to each channel.

 

[riddla 10+ year member]

Ok thanks. would you say that's enough power to the mids or would bridging them have been better ? I have another amp I can use for the tweeters if need be.

 

[trumpet 5,000+ posts]

Ok thanks. would you say that's enough power to the mids or would bridging them have been better ? I have another amp I can use for the tweeters if need be.

You have a perfectly adequate amount of power for the mids. As said earlier, wire them to have their own separate channels. The tweeters definitely will have enough power on tap to burn them up in an instant, so that's the greater concern. Make sure you turn the levels down on your active crossover.

 

[riddla 10+ year member]

ok thanks. I will give it a go.

 

[bumpasauras 10+ year member]

I have my 900.4 (I currently have 3 of them) running 4 infinity kappas 1 on each channel in 2 ohm. they do well on it but my gains are set very conservative. So I would put 1 speaker/tweeter on each channel with the tweets on the front and the mids on the back. Bandpass the mids and high pass the tweets properly and you should be fine you might get another set of the kappa tweets and run 2 on one channel in 4 ohm and 2 on the other channel that would make their life expectancy much longer.

Make no mistake that little amp puts out serious power at 2 ohms so be careful.

 

[bumpasauras 10+ year member]

I would not bridge the mids unless you set the amp with a dmm to the proper voltage for their spec wattage.