blackasscls

Well Somehow someway I managed to fry my Alpine MRP-M850(Discontinued) last night, Worked great for 2 years being pounded every day and now when I turn it up it just pops and stops working, LED light still on. I had an extra amp sitting around which belongs to my friend and wired him up instead turned it all the way up and no cut out, no protect. Triple checked all the wires and it all checks out. So now I guess now is my chance to upgrade to 1000Watts I would just like to know if the Type R can handle it.

eggyhustles

yes. just be careful with the gains

mattastick

Depending on the box, yes. But again, you really need to watch your gains since you're talking about sending double the rated power to the sub. If the power is clean, this will greatly help increase the power handling of the sub...

eggyhustles

think the 15 is rated @ 750

mattastick

you're right eggy, good call. Yeah, in that case, the R should be fine, as long as you watch your gains and send the sub clear power...

blackasscls

So basically just tune it right, correct? That shouldn't be too big of a deal.

blackasscls

bump

mattastick

Basically, yes. More specifically, use a DMM and a derivation of Ohm's Law when you're setting your gains...

blackasscls

Hmm, well i was thinkning along the lines of having it wired at 2 ohms like i had before, its the dual 4ohm voice coil version. At 2 ohms it would be getting 1000rms watts. As far as tuning gain on it I figure ill set my stereo all the way up with bass, sub, everything all the way up then play a bass track and turn the gain up from zero till it starts to distort and then turn down till no distortion is heard, i usually set the amp to 80hz-90hz lpf, and I leave the bass all the way up on the amp. Once this is all said and done i turn the subwoofer control down on the head along with a little less bass so the amp is not always at full capacity. Any input on my way of tuning it?

mattastick

don't turn the hu all the way up, only go to ~75% of the maximum volume capacity. The way you do it works just fine, and that's the way a lot of people set their gains.

Here's what I do: (I'm getting ready to do this again since I just got a new hu put in last night)
-Set volume at 75% of maximum, bass boost, sub control, etc fairly low (but not all the way down)
-Unplug the speaker wires from the sub amp. You're going to be measuring across these to find out how much power your amp is putting out.
-Using Power=(Current)^2 * Resistance, calculate how much current should be flowing out of your amp. The power is what you want to see, the resistance is the final load your sub shows the amp.
-Turn on a ~40Hz test tone and select repeat so that it continues to play. Using a DMM, measure the output (AC) current across the 2 speaker terminals you will be using. Slowly, turn the gain up until the current reaches the number you're looking for. Then, turn the tone off, and hook everything back up.
-Enjoy

1blwn_accord

theres a ton of people on caraudio and diymobile that run 1000 watts daily to type-r's.. just make sure its clean power.

wildmonk69

every sub can handle up to their rated rms or a little bit over. just be careful on the box and port frequency, if you made one, and as almost everybody has said, check your gains. Cleaner frequencies the better.

kcc1kjh

4cu@32hz...is an perfect size for that sub..ive seen people putting 1300wrms to that sub easily