? about JL E6450 amp and ohm load
? about JL E6450 amp and ohm load I'm goignt o be using this amp for my new stereo setup, my question is, thsi is a 6 channel amp and 4 and 5 will be for the subs(2 jl 6w0) I was just thinking about trying to bridge these channels for the subs, the amp says I can into a 4ohm load. These speakers are 4ohm. If I bridge the 2 speakers I will have lower than 4ohm correct? I really don't know. or would I need to have 2 8ohm speakers and bridege them parralel. Or would they have to be bridgeed another way, or is there a way to bridge the 2 4ohm speakers to a 4 ohm load? Thanks.
12 Second Truck Club
Joined: Feb 2002
Posts: 5,574
Likes: 0
From: Sacramento, CA
Just leave it in stereo.
The amp would most likely run them since they are 6" and not a real sub but I wouldn't bother. You won't gain much power by bridging it for what you are trying to do and you will reduce your damping factor and have less control over the speaker.
Your effective static ohmload would be 2ohm if you wired the speakers in parallel and it's just not recomended on that amp.
The amp would most likely run them since they are 6" and not a real sub but I wouldn't bother. You won't gain much power by bridging it for what you are trying to do and you will reduce your damping factor and have less control over the speaker.
Your effective static ohmload would be 2ohm if you wired the speakers in parallel and it's just not recomended on that amp.
sub They are real subs, not mid bass. and If I used 2 8ohm then I would have 4 ohm, correct? And yes I think 75watts vers say 150watts would make quite a difference, and since they are going to be enclosed in the sail panel not just sitting in there it would make even more of a difference. You would be surprised the amount of sound you can get out of a sub when everything is done rght. My friend has 2 6w0's in a box that was made for his car for those speakers and for the amp he has, and OMG. Yes he spent a but load of money doing this, but when you here it and then he opens the hatch, all you can say is WTF.
12 Second Truck Club
Joined: Feb 2002
Posts: 5,574
Likes: 0
From: Sacramento, CA
LOL
Dude, I've been working the high end car audio industry for over 10yrs now. I know EXACTLY what power and different enclosures can do to the same speaker. I know what the 6w0s are. I meant real subs like 10s or 12s with MUCH larger motor structures and power handling.
You stated you had 2 6w0-4 speakers to use. I gave you advice based on those speakers. If you had said you had the ability to run 2 6w0-8s then yeah, bridging it would be fine in that you will be now seeing 75w to each speaker as opposed to 45w per speaker. You will still drop your damping factor in half because of bridging it but you still should be ok since that leaves you around 100. 2 ohm bridged wouldn't be a good idea for control as I stated above.
Now if you really want to step things up make sure you have a very good source unit (deck) that has high voltage/low impedence outputs or get an EQ that does, like the Audio Control 4.1 or something similar. That will make you lil amp work much more efficiently and reduce your noise floor significanly!
Dude, I've been working the high end car audio industry for over 10yrs now. I know EXACTLY what power and different enclosures can do to the same speaker. I know what the 6w0s are. I meant real subs like 10s or 12s with MUCH larger motor structures and power handling.
You stated you had 2 6w0-4 speakers to use. I gave you advice based on those speakers. If you had said you had the ability to run 2 6w0-8s then yeah, bridging it would be fine in that you will be now seeing 75w to each speaker as opposed to 45w per speaker. You will still drop your damping factor in half because of bridging it but you still should be ok since that leaves you around 100. 2 ohm bridged wouldn't be a good idea for control as I stated above.
Now if you really want to step things up make sure you have a very good source unit (deck) that has high voltage/low impedence outputs or get an EQ that does, like the Audio Control 4.1 or something similar. That will make you lil amp work much more efficiently and reduce your noise floor significanly!
didn't specify Sorry, about that, I didn't specify that I hadn't bought the speakers yet, that's why I was asking, wasn't sure if I should go ahead and get the 8ohm speakers instaed so I can run it bridged. From all the testing I have read about on this amp it will produce well over 75 watts to channels 4 and 5 bridged to 4ohm. This is from carsound.com..
"With channels 1 through 4 driven at 1/3 the rated power into 2 ohms (25 watts-per-channel to simulate a typical power consumption you might expect from driving midrange and tweeter speakers), I tested the maximum power output of channels 5 and 6. The result was an impressive 307 watts bridged into 4 ohms. When the sub channels 5 and 6 are measured separately, the sub section of the e6450 produced a whopping 363 watts bridged into a 4-ohm load. The e6450 can power midrange and tweeter systems with more than enough power while simultaneously driving the subwoofers to impressive SPL levels."
So what if channels 1-4 are not running at 2ohm, what if they are running at 4, would I still see the same amount of power from channels 5 and 6 running.
I guess my question is, If im running say, Alpine type-R components in the front and alpine sps-100a's(not component) in the back, can I still run the 2 subs bridged at 4 ohms and see that power(8 ohm subs of course) Also the front components(mid bass and seperate tweeter). How does the amp receive the ohm load from them since one wire runs from the amp to a crossover then 2 come out(1 to the tweeter and one to the mid bass). Sorry if this seems dumb but as I have stated before on this board I am a home audiohpile not ca audio, but trying to learn. Thanks.
"With channels 1 through 4 driven at 1/3 the rated power into 2 ohms (25 watts-per-channel to simulate a typical power consumption you might expect from driving midrange and tweeter speakers), I tested the maximum power output of channels 5 and 6. The result was an impressive 307 watts bridged into 4 ohms. When the sub channels 5 and 6 are measured separately, the sub section of the e6450 produced a whopping 363 watts bridged into a 4-ohm load. The e6450 can power midrange and tweeter systems with more than enough power while simultaneously driving the subwoofers to impressive SPL levels."
So what if channels 1-4 are not running at 2ohm, what if they are running at 4, would I still see the same amount of power from channels 5 and 6 running.
I guess my question is, If im running say, Alpine type-R components in the front and alpine sps-100a's(not component) in the back, can I still run the 2 subs bridged at 4 ohms and see that power(8 ohm subs of course) Also the front components(mid bass and seperate tweeter). How does the amp receive the ohm load from them since one wire runs from the amp to a crossover then 2 come out(1 to the tweeter and one to the mid bass). Sorry if this seems dumb but as I have stated before on this board I am a home audiohpile not ca audio, but trying to learn. Thanks.
12 Second Truck Club
Joined: Feb 2002
Posts: 5,574
Likes: 0
From: Sacramento, CA
No worries mate
The amp sees an ohm load (resistance) at each channel. So regardless of what you do to channels 5 and 6 you will still see a constant power output at channels 1-2-3-4. It will not change unless you change the resistance on those individual channels. So no worries there.
If you have not purchased the speakers yet then getting 2 8ohm subs would work great. You'll get more power to them and the damping factor will not be reduced enough to be noticable really.
When I said 75w to each sub I meant the amp is rated at 150w RMS at 12volt when the amp is bridged at 4ohm. With 150w you will then split it into 2 because you are running 2 subs. It's not exactly how it works but close enough. So you will effectively have 75w to each sub. Granted the test you provided showed more than the rated 150w which is great but without the actual testing procedures I wouldn't take those #s to heart. Some amps are seriously underated but to make double the power at the same rated voltage and the same RMS calculations sounds fishy to me.
It's a great amp though. I sold one this Sat. to a guy with a GMC Sierra and even on stock speakers and stock deck he loved it. It gave him tons more volume without his mids/highs crackling (HP filter) and when we showed him what it would sound like with a subwoofer he was totally sold! Now if we can just get him to ditch the crappy stock deck and front speakers. LOL
BTW, what deck are you planning on using?
The amp sees an ohm load (resistance) at each channel. So regardless of what you do to channels 5 and 6 you will still see a constant power output at channels 1-2-3-4. It will not change unless you change the resistance on those individual channels. So no worries there.
If you have not purchased the speakers yet then getting 2 8ohm subs would work great. You'll get more power to them and the damping factor will not be reduced enough to be noticable really.
When I said 75w to each sub I meant the amp is rated at 150w RMS at 12volt when the amp is bridged at 4ohm. With 150w you will then split it into 2 because you are running 2 subs. It's not exactly how it works but close enough. So you will effectively have 75w to each sub. Granted the test you provided showed more than the rated 150w which is great but without the actual testing procedures I wouldn't take those #s to heart. Some amps are seriously underated but to make double the power at the same rated voltage and the same RMS calculations sounds fishy to me.
It's a great amp though. I sold one this Sat. to a guy with a GMC Sierra and even on stock speakers and stock deck he loved it. It gave him tons more volume without his mids/highs crackling (HP filter) and when we showed him what it would sound like with a subwoofer he was totally sold! Now if we can just get him to ditch the crappy stock deck and front speakers. LOL
BTW, what deck are you planning on using?
12 Second Truck Club
Joined: Feb 2002
Posts: 5,574
Likes: 0
From: Sacramento, CA
Originally Posted by DreamState23x
How does the amp receive the ohm load from them since one wire runs from the amp to a crossover then 2 come out(1 to the tweeter and one to the mid bass).
The speakers each have their own ohm load and when combined inside the X-over network they will show 1 "visible" ohm load to the amp. The amp cant tell if there are 2 speakers or 10 on the end of that speaker wire. It just knows reistance.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo deck i was looking at different decks and could have easily got something better, but I really wanted a 1.5 din. Just has a cleaner look than a 1 din with the install kit.
