Anyone know if their claim of 120 watts per ch is right when 8 speakers in parallel my stereo guy called alpine which tested all the bike amps said its nowhere close to their claim, I want to add speakers but not another amp

 

If you have 4 ohm speakers with eight speakers in parallel the Bt4180 should produce 230 rms per channel at 2 0hms, so 4x 230 rms for a total of 920 rms (according to what Bill at BT told Pioneer) I would tend to believe BT specs. The Bt 4180 is suppose to produce 180 rms at 4ohms hence the name 4180 (not 120 rms)

 

I don't have one to test but if you want to send it to me, I'll be happy to do so. BT amps have always been known for their power.

You don't mention what specific model speakers so it's hard to even guestimate whether 1) it's wired correctly and 2) what it's output power is at rated load.

 

I'm waiting patiently for someone to finally test this amp and post the results.

 

I currently have 4 image series 6X9 and have 4-7.1 image series coming from biketronics all 4 ohm. I will run them from the amp I have now in parallel and see how it sounds I have talked to biketronics several times and they assure me they will put out 120 per that way. My JL600x4 is 150 per channel now so in parralel will drop to 75 ea, but there is gain control, where there is none on the bt4180, which BT call it fool proof but not able to tune it. Like I said my stereo installer says that alpine did testing on other brands and they claim it doesn't put that out, plus he installed one didnt care for it, and said the amp I have now is better. Just looking for conformation from a another neutral person before spending 650 for a amp that might not be any better than what I have.

 

well my "neutral" opinion is put the speakers in and see what you think. My experienced opinion is those JL Audio amps are not known for big power and you're going to need it for these Imagine series speakers.

JL 600/4 is 150x4 @ 4 ohms. That means you'll be piping roughly 75w to each of the 8 speakers. What you need to keep in mind here is that gain control is NOT a volume control.

I'm sure it will sound pretty darn good with that JL amp, but these speakers like power, as in 100+ per speaker to really knock your socks off.

Kinda curious why Alpine would be testing of all things, a Biketronics amp. They don't even have a "bike" class amp in their lineup. Just weird. I would be very skeptical of that comment unless data can be provided to back it up.

 

Totally agree with Nutz. . .75 watts per speaker on the 7.1's is not going to get it done.

 

I'm running 100w to mine and I feel like they want more.

 

and those aren't the legatia series!

 

Damn you ultra!!!......... He isn't trying to power the legatia speakers either I don't believe.