JL 300/4 vs Alpine MRV-F545 - - Infiniti G35 & G37 Forum Discussion | baltiyskiy-vokzal.ru
Show Your Support Become A Premier Member

    > >
  • Reload this Page >
    • JL 300/4 vs Alpine MRV-F545


JL 300/4 vs Alpine MRV-F545

Thread Tools Rate Thread
Old 05-09-2005, 05:45 AM
Registered User
Thread Starter
Join Date: May 2003
location: Boston, MA
Posts: 530
Thanks: 0
Thanked 0 Times in 0 Posts
JL 300/4 vs Alpine MRV-F545

JL 300/4 vs Alpine MRV-F545
I have torn apart choosing amps right now need some suggestions and guide lines. Between these two amp from what i understand
JL 300/4 (about $370 from ebay)
Pros:
- Fit in blose amp location
- better sound quality
- has a more stable power supply?
Cons:
- Expensive
- Less listed RMS per channel

Alpine MRV-F545 (about $340 from ebay)
Pros
- Cheaper than JL
- more RMS per channel
- New design
Cons
- does not fit in blose amp location from my understanding

or even the older Alpine model MRV-F540

And the amp is going to power my front MB quart PCE216 components and a 10" sub that im decide soon. And for the sub i have to bridge the rear channels to power it, and i have a question about which ohms do i need for the sub? Coz since i bridge the rear channel dont i need to get a 8 ohm subwoofer?

Sorry this post might be really annoying to someone but ...im really confused right now.
Old 05-10-2005, 05:12 AM
Registered User
Thread Starter
Join Date: May 2003
location: Boston, MA
Posts: 530
Thanks: 0
Thanked 0 Times in 0 Posts
Help please
Old 05-10-2005, 05:20 AM
Registered User
Join Date: Feb 2005
Posts: 69
Thanks: 0
Thanked 0 Times in 0 Posts
jl is the winner sound quality and don't look at rms the rms for alpine is at a 14.4 volt rating hardly ever achieved on a constant the jl is pricer but its because of its technology to always run at that 14.4 volt rating day or night i.e lights on. i have a alpine v12 four channel in my civic that is great but for the G35 im doing the jl route i have a audio nut friend like myself who has the same set up as me in my civic and switched out the alpine for the jl and you can hear the diffrence on those tracks which really display a wide range of sounds.
Old 05-10-2005, 06:06 PM
Registered User
Join Date: Jun 2003
location: Modesto, CA
Posts: 5,197
Thanks: 0
Thanked 0 Times in 0 Posts
Well for 30 bucks more? go with JL, so you dont have to worry about what ohms of sub you gonna use, cus it give out same wattage between 3~8ohms, I would suggest that you looking some amp have bit more power for the subs, 150 just dont seem to be adequate! instade of 300/4, maybe 450/4? bit pricey tho , most of amps when you bridge them, it will only be at 4ohms, so you are looking at either 1 10 4ohm or 2 10 8ohms, or you can get dual voice ones, the dual 4ohms will give you more flexabilty later if you decide to add second subs or mono amps
Old 05-10-2005, 07:10 PM
Florida G35 Club
iTrader: (2)
Join Date: Sep 2002
location: New Port Richey, Florida
Posts: 1,126
Thanks: 0
Thanked 1 Time in 1 Post
JL Audio
Old 05-10-2005, 08:31 PM
Registered User
Join Date: Feb 2005
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
I feel your pain I did my own car a few months ago and it took some time to figure out what's best. I don't know anything about the Alpine but I will tell you what I know about the JL since I have three of their amps. The 300/4 is stable from 1.5-4 ohms, not 8. It is nice because you can get pretty much any sub and make it work. If you get a dual voicecoil sub you have the choice to hook it up in either serial or parallel. In my case I bought a 10" W6V2 with dual 4ohm voice coils, so the choices are either hook up the Dual voices coils in parallel at 2ohms, or hook them up in series at 8ohms. 2ohms will get you more volume, 8ohms will get better damping. Now the JL is only stable up to 4ohms so every time you double the ohms you half your power. That would mean you only have and effective 75watts driving the sub at 8ohms, which is not enough power. So your only option would be 2ohms witha 4ohm Dual Voice coil sub. Now you can get other subs at different ohms. Just look at the voice coil ohms and do the math if they are DVC (Dual voice coil) to see what you end up with. Most manufactures are making DVC subs because you have many more combinations when hooking multiple subwoffer togther. 2 8ohms subs in parallel = 4 ohms, so you have many more options with upgrades and or better resale valuse with DVC sub. I hooked my sub up in series at 8ohms but I have a JL 500/1, I like the precision of the damping over the loudness of 2 ohms but I have the power to spare. 2ohms at 500watts was really loud.
I would aggree a 300/4 is marginal on power your only getting 75 watts per channel up front and a 150 bridged to the rear. A 450/4 would be better in your application if you can afford it. I don't think a 300/4 would be bad but I have a 300/2 driving my front components and I can drive them till they clip and still want more. However you can always upgrade later, by moving the 300/4 to just drive the fronts 150 per side and upgrade the subamp. I built my system in stages and if you plan ahead it works well.
Old 05-10-2005, 11:24 PM
Registered User
Join Date: Jun 2003
location: Modesto, CA
Posts: 5,197
Thanks: 0
Thanked 0 Times in 0 Posts
Not to nickpicking but...
Quote:
The 300/4 is stable from 1.5-4 ohms, not 8.
...it isnt right, the amp is stable to 8, if an amp is stable to 4? it will take 8 ohms or more, it can go higher, but not lower from the lowest ohm rating, well you could but it wont last very long, but you are right about the wattage been less if you go higher ohm load, just like the oppsite of lower the ohm load higher the power output......got this from JL's website....



Specifications:

Rated Power (stereo):
75 W RMS x 4 1.5 ohm-4 ohm
(11V-14.5V)

Rated Power (bridged):
150 W RMS x 2 3 ohm-8 ohm
(11V-14.5V)

THD at Rated Power:
<0.03% 4 ohm
S/N Ratio*:
>108.5 dB below rated power
Frequency Response:
5 Hz-30 KHz (+0, -1dB)
Damping Factor:
>200 4 ohm per ch./50 Hz
Input Range:
switchable from 200mV-2V RMS
to 800mV-8V RMS
Dimensions:
13.4"L x 9.25"W x 2.36"H
Old 05-11-2005, 10:19 AM
Registered User
Join Date: Dec 2004
location: Roanoke, Virginia
Posts: 690
Thanks: 0
Thanked 0 Times in 0 Posts
You guys are forgetting that when you bridge most amplifiers, it operates at half the resistance its given. So in this case if he bridged the rear to channels and put an 8 ohm sub on the amp, it would operate at 4ohms. But since JL Audio amps used regulated power supply the output from 1.5-4 ohm is the same, just like someone else here stated. Since you're not going to get a lot of power for the sub from this amp, I would suggest the JL 10W0 8ohm or 4ohm.
Old 05-12-2005, 12:04 AM
Registered User
Thread Starter
Join Date: May 2003
location: Boston, MA
Posts: 530
Thanks: 0
Thanked 0 Times in 0 Posts
wow thanks for the input guys...so JL 300/4 it is...yea i have been looking at the 10W0 4 ohm...and possibly the new 10W1 4 ohm...
Old 05-12-2005, 09:41 AM
Registered User
Join Date: Dec 2004
location: Roanoke, Virginia
Posts: 690
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by etang789
wow thanks for the input guys...so JL 300/4 it is...yea i have been looking at the 10W0 4 ohm...and possibly the new 10W1 4 ohm...
If you think there is ever the possibility of adding a second sub to the car get yourself a 8ohm woofer.
Old 05-13-2005, 03:21 PM
Registered User
iTrader: (1)
Join Date: May 2003
Posts: 476
Thanks: 0
Thanked 0 Times in 0 Posts
I use a 300/4 for my 4 sets of components, and a bridged 300/2 for my sub. It sounds fantastic. I like the sound of rear fill, so for me, doing only one set of components was not an option. I use an 8W7 sub, and even with a small sub like that, the 300 watts of the 300/2 is considered optimal. So using half of a 300/4 will defiantely not be enough power, no matter what sub you choose. If you are going to use a sub that is bigger and more power hungry than the 8W7, you'll probably want even more power than the 300/2 I am using. On JL's web site they have a chart that shows the power range and optimum power for each of their subs.


Related Topics
Thread Thread Starter Forum Replies Last Post
David's IP G35 Coupe davizzle Picture Share 14 04-26-2016 07:10 PM
David's 2007 G35 Coupe Build Thread davizzle Media Share G35 Coupe V35 18 12-13-2015 01:47 PM
Looking for a new double din Frankieg35 Audio, Video & Electronics 12 10-07-2015 11:22 AM
BEST Amp Ground location Bean_VQ35DE Audio, Video & Electronics 5 08-22-2015 10:56 PM
finally-thanks for the help guys tig488 Audio, Video & Electronics 9 08-18-2003 03:05 PM


Tags
2v, 3002, 3004, 4504, 8w7, alpine, audio, bridge, cheap, f545, g35, jl, mrv, mrvf545, ohm
Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:03 AM.


Copyright ©2002 - 2017, baltiyskiy-vokzal.ru All Rights Reserved. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in:

Related pages


m1 110 filtermobil one extended performance oildefine ecunissan flip key2003 infiniti g35 valueg2 caliper paintkinetix intake manifoldcold air intake soundclubxterra org350z turbo kit for salesa60minfiniti emblemstop speed exhaust 370zmetalcast smokeaai-nis2g35 coupe blackhks cold air intake2008 bmw 3281e85 fuel conversionfoose df-5castrol transmax jundercarriage rust preventionhow to add usb port to car stereomonroney sticker by vin2005 g35 coupe 0 60difference between plenum and non plenummb quart 8 subwoofermaxima rimsgtr wheelsgx35 infinitisomeone keyed my car insurancev36 sedanrim ssr type c240sx clutch damperhow to add an aux input to a car stereopioneer navigation system manualacura tl vs tl type stechron by chevronnissan skyline gtr r34 v spec 2 for sale2006 infiniti g37 coupe for salebmw tire pressure light stays onstock srt4low profile rampsg35 vs g37 coupe2007 m6 0-60godspeed exhaustkenwood kdc x891how to replace oil cooler gasketwiring sub to ampinfiniti license platejl audio w3 10how much to rebuild a manual transmissionhawks brakescamber caster kitnismo spoiler 350zpioneer avh p3100dvd wiring harnesshow to test camshaft position sensor60.9 cschop stixxjl 500.1g35 2006 coupegloss plastidiphow much is a tinted window ticket in nydfw autocrosskendall engine oilg35 single turbo kithow long for plasti dip to cureavic d3ark exhaust reviewinfiniti g35 lease2006 infiniti g35 sedan problemsinfiniti 2001 qx4eclipse avn726e10w6 jl audiocallahan brake pads