can you use this thing with non-alpine head units?

 

I don't see why I would need to splice anything? The IDA HU is made to power 4 speakers at 18w x 4 RMS with a max of 50watts, but its just powering two right now. The other four wires for powering the rears should technically still be at the harness no? I will likely add two more speakers and then if the HU seems to be under powering the speakers ill just hook up the KTP again. Thoughts?

 

Hi there, re-hashing this thread,
I'm wanting to overhaul my factory 02' sound system, and looking at a new headunit + Set of good 6.5'' component speakers.
I don't really want to install a amp and go through that hassle, rather some good speakers and perhaps the plug n play power pack amp such as alpine 445, which gives 45 RMS per channel.
I was looking at getting some JL Audio C3 650's
Would the alpine 445a 45RMS be enough to drive these speakers?
Cheers

 

Those speakers, with a sensitivity rating of 90 dB are neither particularly efficient nor particularly
power hogs. In a quieter car 45wpc would likely be sufficient; in the s2000 it may be ok or you
might want a little more headroom.
That said, if you don't mind splicing together your own adapter harness rather than relying on a plug&play
version, you can use the ktp-445u ("u" for universal) version which can be bridged to give 90w x 2.

 

Yea I did think about the Ktp-445 "U' but this version isn't compatible with the modifry DCI ive already ordered lol (mentions it in the description of the URL)
https://modifry.com/index.php?route=...&product_id=57

I think I'll try the new Alpine HU + KTP-445A + JL Components and see what I think. Can always go down the path of a more powerful amp in the future.

 

My system was installed a long time ago....2004-2005ish on my 2004 S. Alpine CDA-9857 HU, an XM receiver and Alpine Type-S component door speakers....along with OEM dealer installed head-rest speakers. A few years ago, I added the KTP-445 and it made quite a difference.....not blown away, but a nice boost in volume and clarity. My KTP-445 is mounted on the passenger side behind the knee panel. Just wrapped a 1" velcro "loop side" taped around the middle of the 445 and used a large zip-tie over the velcro. Plenty of room in that location. Will be adding a JBL "spare tire" powered sub-woofer within the next few weeks, hoping this will finally fill-in the lack of lower-end bass. BTW, I ran the XM antenna lead through the center console and hidden compartment and mounted the antenna behind/adjacent to the middle of the wind deflector. Never had any reception issues with the top up or down in 16 years.

 

Modifry sells a wiring harness which bridges the ktp445a to 90x2. No need to buy the “u” model.