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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > JL 500/1 or Alpine MRP-M500



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      03-26-2010, 09:26 PM   #1
fdriller9
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JL 500/1 or Alpine MRP-M500

So I have those 2 amps and I want to use one of them to push my Alpine Type-R 1242D. Sub is a DVC 4ohm. I will wire it so the amp sees 2ohms. Which amp would be better? My shop says I should use the JL but I don't think it matters. Both amps are Class D Mono, 500W @ 2ohms. I want to use the MRP-M500 because I also want to get an Alpine MRP-F300 so I can wire my SWS-8s in stereo, 150w x2 @ 4ohms. I want to be able to mount the amps on either side of my zenclosures box, diagonally but if the JL performs better I want the better choice.
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      03-26-2010, 09:55 PM   #2
mister wiggles
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MRP-m500 for the price point. I've been using mine for the past 4 years without any issues with overheating, distortion, or power delivery.

i think JL products are overpriced and overrated. i'm not saying the quality isn't there, but other companies offer more bang for your buck.
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      03-27-2010, 12:35 AM   #3
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I LOVE my JL 500/1.. I use it to power my Infinity Refereence Components, and have been usign the same speakers/amp for almost 5 years now, never had an issue with the amp side of things.. worth the money.
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      03-27-2010, 07:22 AM   #4
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the jl is superior to the alpine in every way - except 1 very important one (at least in my opinion), which is efficiency. The JL uses a switching power supply, but pretty sure it is AB in it's output stages. Either way, it will draw all but twice the power to give you rated output. The electrical system in our cars is pretty healthy, but I think it is better to be safe when we are talking about a BMW that everything is expensive on.... You are also adding another amp that will be running upper bass/midbass, which will draw a fair bit of current for what it is doing. My vote is for the alpine because of this. Plus you can make them look nicer.

Now if you are starting from scratch, JL HD amps or JL XD amps would be an excellent choice as they are more efficient, sound better and are tiny so you make even be able to hide them away. And amplifiy your highs too so they can keep up...
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      03-27-2010, 10:02 AM   #5
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Can I amplify stock L7 speakers? I kinda remember hearing that somewhere but I might be wrong. I'd like to keep the alpine theme as everything is alpine and that I'll be mounting them so that they'll be shown....being that it is more efficient I'll probably stay Alpine. I already have a dimming problem with the JL. I wish I could get the new JL amps but I have a tight budget being I'm a student. I know I drive a BMW but it was a gift from my parents for doing well in school. Everything that goes into the car is out of my own pocket...including the accident I just got into.
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      03-27-2010, 10:08 AM   #6
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If I can run the stock highs off of an Alpine amp maybe I'll just keep the JL 500/1 to power my Type-R and then mount the 2 alpine amps to power my speakers/sws-8s. The JL would be mounted under the box.
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      03-27-2010, 11:20 AM   #7
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So I did alittle searching on google/forums and it doesn't seem like feeding the stock L7 speakers would improve the system much. I would have to get multiple amps anyway...L7 has 13 speakers, correct? and 2 are the underseat subs, rest mid-range drivers/tweeters. So I would need like 3 amps haha. I read in another thread running them in series is not a good idea. I did however pick up that upgrading the tweeters in the front doors could yeild some improvement. Can someone chime in on this? The OP used soundstream tweeters but kept the stock caps in line. Is there a better option? Also I plan on running sws-8s as midbass drivers after I get my trunk sub in, however I blew them so I need to get them reconed. Someone told me there are better options for midbass drivers. What are they? I'm not trying to spend a boat load of money. Thanks.
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      03-27-2010, 12:04 PM   #8
Lee Rambler
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you can definitely amp the L7 speakers, and it will improve their performance. I did that prior to replacing them. The tweeter is not the weak link, the primary problem with the L7 speakers is their lack of midbass, and their ringing resonance at higher frequency. All in all they are pretty decent though.The oem woofers are a better midbass than the SWS's, that would be a low cost option. The only thing I've found that I am considering is morel drivers (the ADMSW VP recommends, and the MW265 and MW266 that are available in 4 ohm. The 267's look pretty good too, but can only find them 8 ohm). There are also some dayton drivers that just came out that look like they would fit, but not sure about the performance - pretty new. Hertz made some, though they are discontinued. Rainbow makes some too, but unsure on them... the oem driver is pretty decent, so unless you are looking to spend $3-600 on morels....

ditch the "back" speakers and center, just amp the front and rears. And the sub and midbasses of course. Need 7 amp channels total. You could keep your M500 on the sub, use the F300 for the fronts and rears, and add a 2nd F300 for the midbass.
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      03-27-2010, 12:30 PM   #9
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Sounds like a plan. I'll look into that. What do you mean by "back" speakers? The ones in the rear doors or the ones in rear deck? What's wrong with leaving them both in? Or is it solely because I mentioned I didn't want to spend tat much. Morels are too expensive. I already read up on that. Thanks.
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      03-27-2010, 03:58 PM   #10
Lee Rambler
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in a e92, the rear speakers are in the side panels and the back speakers are on the rear deck. In a e90 it''s the opposite. Don't use the door speakers. Nothing to do with budget. No need for too much rear fill, many people use none at all. And those speakers are mids only, no tweeters - exasperating the high frequency break-up of the L7 drivers.

I agree on the morels, but with the depth limitations there aren't many options that are an improvement over stock...
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      03-27-2010, 04:54 PM   #11
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Hmm, I don't really mind the way the L7 system sounds now. As of this moment I have everything back to stock. I just ordered my zenclosures box and will be putting a Type-R in. I'll see how that sounds. Most likely, I'll get the SWS-8s reconed and then put them in, run by the MRP-F300. Just emailed a guy on ebay in my area and asked him if he will do $80 for local pickup. Awaiting an answer. If anyone wants a JL 500/1 hit me up.
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      03-27-2010, 05:00 PM   #12
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Quote:
Originally Posted by flz34 View Post
I LOVE my JL 500/1.. I use it to power my Infinity Refereence Components, and have been usign the same speakers/amp for almost 5 years now, never had an issue with the amp side of things.. worth the money.
Wait so your using a mono amp to run your comps? Aren't they suppose to be in stereo? They're handling mid to high range frequencies I assume.
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      03-28-2010, 07:09 AM   #13
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I wouldn't bother reconing the earthquakes, just run the L7 woofers as midbass - you can use the oem crossover as the lowpass for a bandpass by running a 50-60hz highpass on your alpine amp. they actually sound pretty good as midbass. You'd be surprised how much you can improve your sound by amping the correct speakers in the system. You could still keep the back and center speakers connected to your L7 amp if you wanted, and connect/disconnect them to hear the difference. Those channels are all dramatically reduced by turning the L7 off, but do still play.

depending what you want for it, I could be interested in your 500/1 - and I'm somewhat local to you that maybe we could work something out for pick up/ help tuning your system once you have amps in.... shoot me a pm if interested. You could also hear my e92, 2 sets of comps, bitone, 2 4ch amps and a skipass sub set up IB - bassically the way I was suggesting you set up your system, just with new highs and a bitone (though to be fair the bitone is pretty frickin awesome)
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      03-28-2010, 12:03 PM   #14
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I think I'm going to do that...amp the L7 woofers. Do you think the MRP-F300 would be ok? The guy I contacted on eBay wants me to bid. So I have to wait for that to come in too. Btw, Lee Rambler, you have PM.
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      03-28-2010, 12:20 PM   #15
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high passed I think you'll be ok. I know the 70watts rms I have on mine isn't really enough...
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      03-28-2010, 12:28 PM   #16
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Wait so you have another amp driving the woofers with 70W? Or it's still on the L7 amp? How much power do you think these woofers can handle? I don't want to blow these. They are expensive, new.
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      03-28-2010, 12:39 PM   #17
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2 eclipse 4 ch's (think I'm going to replace with the new JL XD's, or maybe JL HD's - they were a temporary stop gap until the XD's came out to see how they perform). 2 channels on the front, 2 channels on the midbass, 2 channels on the rear and 2 channels bridged to the sub. the "70w" L7 amp is probobly 30-40w rms. The drivers have a pretty hefty excursion, and I was running on out of the enclosure to see if I was close to reaching it (I realize the excursion will be different in the enclosure, but typically free air reaches excursion much easier), and the amp clips WAY before it's even close - like 1/4 to 1/2 of the excursion. So my guess would be 150watts is probobly pretty safe, at least for the mechanical limits. I have no idea what the actual thermal power handling is - I'd like to think the engineer who designed the driver was smart enough to provide adequate thermal power handling to at least come close to reaching mechanical limits... If I find out, then the driver isn't up to snuff for what I want to do anyhow so I'll replace it (morels) - not like I'd have another use for them anyhow.
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      03-28-2010, 12:57 PM   #18
fdriller9
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Hmm well if you're going to take out those eclipse amps, do you think I would be better off with those? or the alpine F300s? Maybe I can buy those eclipse ones from you?
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      03-28-2010, 04:52 PM   #19
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So if I were to amp my midranges/tweeters would I need something like a JL cleansweep or Audio Control LC6i? I think its LC6i.
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      03-28-2010, 05:26 PM   #20
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Because I like the way the L7 processing sounds, would it work if I just got this? And powered the front (+tweeters), rear door, and rear deck speakers with this? The run the woofers of the F300? No center channel.

http://cgi.ebay.com/NEW-JL-AUDIO-M64...item5ad300d28c

It's a marine amp tough. I don't know if it matters.
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      03-29-2010, 06:22 AM   #21
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marine doesnt matter, but dont you want them to match?

I could be convinced to sell the eclipse amps. certainly not the best sounding amps I've ever used, bet definitely not bad either. not gobs of power though is what I would upgrade for, just got them as s stop gap until the new jl xd's came out, which they have now - need to decide between those and hd's.
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      03-29-2010, 10:34 AM   #22
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I do but alpine doesn't make a decent priced 6 channel amp...I got your pm I think I'm just going to get the lc6i...I don't see myself getting the bitone in the future. Do you think I'm just better off with 3 locs? I have another 2 laying around. My plan as of now is to get an f300 to power the front and rear deck speakers, another f300 for the underseat woofers and if I don't like the way it sounds I'll get another f300 for the rear door speakers, or a 2 channel if they have one. And of course the m500 for the trunk sub.
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