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Thread: Archive through February 09, 2004 |
    
Anonymous |
| Posted on Friday, April 25, 2003 - 09:35 pm: |
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I have a 12'' sub hooked to my home stereo along with some other car speakers. They all work fine but i want more kick out of my sub, so i got an amp from a friend and i cant figure out if it will even hook up to my home stereo. Does anyone have and helpful advice for my situation? |
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Derek |
| Posted on Friday, April 25, 2003 - 10:40 pm: |
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Car subs work fine as long as you have enough power. Car subs, in order to produce a relatively flat response in small enclosures, are terribly inefficient. As an example The MTX 10" 8000 has a sensitivity of 83.4 db/watt. A passive home sub with that kind of effitiency would not sell well. 87 db would be a minumum. That's why so many car systems have more power than home systems. 500 to 1000 watts is common.
Sound re-enforcement equipment used in clubs and concerts can easily produce 105 db/watt. A 1000 watt amp can produce a HUGE amount of sound.
To make matters worse, most car speakers are unusually efficient - typically in the 90+ db range. This is to produce the most output from the typical 11 watt head unit. To create a flat response requires a sub amp with about 10 times the power of the rest of the system.
You can do it but make sure it's in an optimum size box and the receiver you have has a subwoofer preamp output. Run that line to the new amp and connect the sub to the amp.
Hope this helps. |
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| Posted on Saturday, May 03, 2003 - 03:17 pm: |
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First of all you will need an AC to DC converter to power your car amp then the rest depends on the recievers available outputs, the amps available inputs and the power you need. I don't recommend it but it may be able to be worked to fit your needs. List the specs of your amp, sub and reciever and we might figure it out. |
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| Posted on Wednesday, July 09, 2003 - 09:07 pm: |
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Knowing all this new information on how i could connect my car amp to my home Receiver. I just got two 12 inch sony Xplods at 1200 watts peak power and 350 watts rated power, and a 1000 watt sony Xplod amp given 165 wats * 2. I was wondering if you could help me hook it up the best way possible.
Thanks, James |
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| Posted on Thursday, July 10, 2003 - 05:49 pm: |
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Wzup Fellas,
I am a college student who enjoys extremely loud music. I'm in a similar situation, I trying to hook up 4 Additional subs to my desktop stereo. Which is a panasonic SA-AK29 that puts out a total wattage of 260-280. Now I have the four additional subs hooked up but, when I reach a certain volume level the the stereo cutts off, which of course mean I need more wattage. The following four subs are as follows: Two Alpine 12-inch subs with a peak of 1200 total, a 10-inch jensen XS with a total wattage of 400 and a 10-inch Kicker VR don't know the wattage on that particular sub. I want to hook up a car stereo amplifier to the stereo. The stereo is equipped with a left and right subwoofer outputs. If some could tell me how to this, it would be greatly appreciated. I need to know stuff like, how to convert home electrical power to Amp power. Where to hook up the remote wire from the amp to the stereo.
Any help would be appreciated!!!
Thanks, Byron |
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| Posted on Monday, July 14, 2003 - 09:38 pm: |
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Yo Bryan I am in a situation like that to u just returened my Sony AMP and got a RockFord Fosgate Amplifier cause my friend told me it was better. It seems like you got it pretty easy because you got a left and right subwoofer output i only have one. All you have to really do is hook up a power cord to your Amplifier which might be a litle tricky follow te directions on the amplifier directions and i belive you will be able to figure out where which cord goes where |
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| Posted on Tuesday, July 15, 2003 - 10:18 pm: |
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First of all you may want to get a more efficient power supply to give some juice to your car amp. A rectifier that puts out at least 13.4 volts (the power requirement in the vehicle, not 12 volts as some people believe). You need at least a 65 ampere rating on said rectifier (or converter) and a set of stiffening capacitors to supply the necessary juice to the demands of the subwoofer specially if it eats up power as you stated at 4 or even 2 ohm rating, auto speakers suck up a lot of juice. Hence the problem of speakers cutting off as Byron stated...its not not the wattage that's killing you it's the amperes. You need a more effecient power supply, something that can supply a lot amperes. You'll notice that high powered sound systems in vehicles are equipped with alternators that produce a higher ampere rating than the stock version, they also state the need for "stiffening caps" these are used to supply power to the subs when they are playing an intense bass passage....hope it helps |
Anonymous |
| Posted on Wednesday, July 16, 2003 - 01:17 pm: |
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Stiffening caps don't help as much as you think, they just help flatten the voltage across the play times... (But surges in demand would still leave you without volume and have blips of silence when the bass hits) You will need a HUGE maybe 10 times the rated 1 farad / 1000 watts formula to support constant strain to the current... Might need to get a digital cap worthy of 40 farad or something to play maybe a whole song...
I have not found a good solution to this but was wondering if anyone has done any wiring for good guys, best buy, walmart, circut city, any hardware place that demos car audio... How do they do it and if you can find a source, maybe that'll be the best answer...
Also, you need to provide a seperate low votage line to the remote in on the amp to turn the amp on... This is easy to bypass since you can just wire a small battery to it when you want the amp on... But this MUST be connected in order to turn on the amp... I have no clue how the grounding would work though... (please check the sensitivity of your amp's remote lead before hooking up excessive voltages to this sensitive input) |
chaz the MIT guy |
| Posted on Thursday, July 17, 2003 - 11:15 pm: |
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For the guy who has tons of car speakers on the desktop computer. If your speakers are in series there is too much of a load on the amp. It is probably rated 8-16 ohms. If it's in parallel then your basically shorting it out. There is no way around this, unless you "get a new amp". Your best bet is to have the original speakers and hook on sub per channel in parallel to the circuit. You’ll have a little bit better response but not much, and as far as stiffening caps they are garbage. It’s a case of too much speaker not enough amp. They are like a short ride battery they just assist the power supply not the amp, and in the case of home stereos where power drain is not an issue because of the wall power they just add cost and take up space, but they look cool. |
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Anonymous |
| Posted on Saturday, July 19, 2003 - 08:14 am: |
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is 15 volts enough for my amp? |
marcus R. |
| Posted on Sunday, July 20, 2003 - 01:17 am: |
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would it reaally matter if i had different brand subs hooked up 2 an amp the two brands are audio pipe and sony xplod the xplodsare 900 watts peak and the audio pipes are 750 watts peak wut would be the beak type of amp and how much power |
Anonymous |
| Posted on Wednesday, August 13, 2003 - 10:18 am: |
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My Bose passive sub doesn't produce much bass.
So I am trying to learn about crossovers and amps and stuff to fix this.
I learned that my Sony recevier has a two subwoofer outputs that are already crossed over.Why there are two who knows..I'll flip a coin.Anyway so I grabbed a few sub-woofer speakers from an auction, I can make a box for one later if this works...and a friend of mine gave me an amp (for a car).
I'll figure out how to convert AC to DC on my own time..but what has me now is this car amp.
It has two inputs marked "low", a weird square plug marked "Hi Level" then another weird round plug marked "din input" then I have some screws marked output left and right ..I know what those are for.
Any help on how to wire the amp is greatly appreciated. |
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| Posted on Thursday, August 28, 2003 - 10:21 pm: |
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I NEED HELP DESPERATLY!!!
ok when i unplug my subs the needle on my amp starts to jump up and down alot, but when i plug them in they dont bounce, and when i plug my subs in with no amp its louder than when my amp is pluged in
AND ADVISE WILL BE TRYED.....THANX! |
EVIL BASSMASTER |
| Posted on Tuesday, September 02, 2003 - 06:26 pm: |
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I ALREADY HAVE A AMP HOOKED UP IN MY CAR. COULD I ADD ENOTHER AMP TO THE ONE THAT I HAVE BY BY CONNECTING THE SECOND ONE TO THE FIRST WITH RCA CABLES? AND DO THE TWO AMPS NEED BE THE SAME WATTAGES |
evil bassmaster |
| Posted on Tuesday, September 02, 2003 - 06:39 pm: |
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i forgot to mention that i have two 15" subs and wanted to hook a amp to each sub |
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| Posted on Wednesday, September 03, 2003 - 09:06 pm: |
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EVIL BASSMASTER - I have two amps in my car also. If your amp has a signal output RCA (or line output) you can use that to run a signal to the second amp. You can also splice into the power and remote cables to get power to your second amp, but it is recommended that you put a fuse somewhere between the splice and the second amp. Go ahead and run another line for the second amps ground just to be safe.
My question goes out to all the people who want to hook up a car stereo amp in their house. How can I get the 120V AC wall power into 13.8V DC power required for the amp's main power? This is the only thing that I'm concerned with, the rest I can figure out once the amp gets turned on. |
/\/\/\/6 |
| Posted on Thursday, September 04, 2003 - 09:05 am: |
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I found an Astron power supply on Ebay for $130. It produces 37 amps 13.8V DC continuous, and 50 amps max (people use it to power ham radios and such). The amplifier that I'm going to use has a fuse rating of 35 amps. So I figure that giving it at least 35 amps would be enough. Because if it pulls more then that, it will blow the fuse.
I've done a lot of searching and figuring, and the main thing to be concerned about is getting enough Amps to your amplifier.
When my power supply comes in within the next couple days (next week) I'll let you know how it goes. :D |
Nathan |
| Posted on Thursday, September 04, 2003 - 12:13 pm: |
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Hello everyone, in regards to car audio connected to home audio. Has anyone been concerned with the ohms? A car sub operates at 2 or 4 ohms signal and home audio works on 8 ohms signal (average). Has anyone solved this? |
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| Posted on Friday, September 05, 2003 - 05:09 am: |
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I believe CHAZ the MIT guy was on target. Total circuit impeadence (Z) is going to be your main problem after you solve all of your power (AC to DC issues). being that P=IE current is directly proportional to your total power, wattage is the unit of measurement for power so the argument over ampres (=current(I)) and watts (=power(P)) is pointless, also the nominal Z of your home amplifier is going to play a part on all those big boom subs your talking about, you see Z=IR no amplifier can operate at 0 ohms most not below 2 this is where the Ohms of your subs the number of and the whether they are in series or paralell play a part. they all impact total Circuit Impedence which cannot exceed the limitations of your Amplifier. |
/\/\/\/6 |
| Posted on Friday, September 05, 2003 - 09:39 am: |
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Scott is right on the whole Ohms discussion. You need to be carefull on matching the Ohm load of the speaker to the Ohm output of the home amplifier.
In my case, I plan on using the Subwoofer RCA preouts of my theater reciever. I will hook those up to my car amplifier's RCA inputs, and supply the amp with power from a DC power supply.
The car amplifier I will use is bridged mono 4 ohm stable. And the speaker I'm using is a 4 ohm speaker.
No worries here :D |
Anonymous |
| Posted on Friday, September 05, 2003 - 06:01 pm: |
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I once eat a a$$ out for a nickle |
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| Posted on Sunday, September 07, 2003 - 08:43 pm: |
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How dose the remote wire work on car amplifiers. I want to hook my sub up 2 my home system and it won't even fire up without it. Is it just a continus 12 volts or is there more too it than that |
/\/\0/\/60 |
| Posted on Monday, September 08, 2003 - 08:33 am: |
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Yeah Chris, the remote wire on car amplifiers turns on the amp when it gets 12v. You can just run a little jumper wire from the power terminal on the amp to the remote terminal.
:D |
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| Posted on Thursday, September 11, 2003 - 07:11 am: |
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Hey guys, I'm new in this site, I work at Technotronix SA... for those of you who dont know, we specialize in audio fittment for vehicles. some of these problems are really easy to fix. Anyway If you need any help on sound, you can contact me at my e-mail address teamaudiobahnsa@yahoo.com I just wanted to people to let me know if you any1 is selling any audio equipment because I buy and sell stuff as well...
see ya... thanx... |
/\/\0/\/60 |
| Posted on Friday, September 12, 2003 - 10:41 am: |
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Vishal, could you shed some light on how car audio retailers create their displays for car radios and car amplifiers? How do they supply power to the amplifiers and head units on display? Do they use racks of batteries with a charger? Or is it by some other means?
Thanks
:D |
DJ Phrenik |
| Posted on Friday, September 12, 2003 - 11:48 pm: |
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whats up everyone, i'm a dj from san diego and i was inquiring about many questions, first i have 2 10"s ( MTX and a rockford fosgate) hooked up to a rather weak home stereo (only bout 100 watts total) its sounds decent but i was wondering if box size really makes a difference because i have one in an old bazooka tube and the other in a rather small truck box... i was considering buyin a box that can fit two tens but didnt want to waste my money if it wouldnt make much difference, can someone drop some knowledge on box size for me? |
stevo |
| Posted on Sunday, September 14, 2003 - 04:20 pm: |
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hey can anyone tell me how i can hook up my car amp inside my house? what do i use for rem and ground and power....please IM me at stevo43usc .thanks |
/\/\0/\/60 |
| Posted on Monday, September 15, 2003 - 08:58 am: |
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To let you all know, I just got my DC power supply in on Friday. And man does my home theater kick a55!!
I got an Astron rs50m that puts out 37 amps continuous 13.8 volt DC. It has a positive (power) lug, and a negative (ground) lug on the back.
I took my USAcoustics USA2150 amp rated with a 35A fuse, and hooked the power to the power and ground to the ground. I got a tiny (16 gauge I think) wire and connected the REM connector on my amp to the Power connector on my amp.
When the Astron comes on line, the amp powers up just like it did in my car.
I used the Subwoofer RCA preouts on my Kenwood home reciever. I bought a Y adapter (from single RCA to dual) and plugged this in to the RCA inputs on my car amp.
Now I have a 500 watt 15" solobaric as my home theater powered subwoofer!!!
I cannot explain how much this kicks a55!!! |
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| Posted on Monday, September 15, 2003 - 11:17 pm: |
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Whats up guys, i am working on doing the same thing as some of you guys with the whole car subwoofer in the home theater thing. I work for Ultimate Electronics and we used to have a those dumb PT Bruisers in our showroom and the way that they were connected was by Cascade power invertors....Im sure if you do a web search you can find these somewhere, but you shouldnt connect car speakers to home receivers without a car amplifier because of the impedience, it wont sound good and youll end up breaking your subs or your home reciever, i dont care how good it sounds when you hook it up..... |
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| Posted on Monday, September 15, 2003 - 11:32 pm: |
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Another thing too, when hooking up car amps and subwoofers in general make sure you hook up the speaker wiring correctly and that the impedience (ohms) match from the speakers to the amp, this is hugely important to make sure you are getting the sound you paid for, if you dont know exactly how to do this go to Rockfordfosgate.com and click on rftechs and then click on woofer wiring wizard, this is the easiest way to do it until you can remember in your head without a diagram.....
NOT ALL AMPS WORK WITH ALL SUBWOOFERS, AND WATTS ARE NO EVERYTHING YOU NEED TO THINK ABOUT |
Vishal |
| Posted on Tuesday, September 16, 2003 - 02:10 am: |
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Well depends on what type of display our customers want, usually we build simple displays ourself, we ask our customers what style they want,and buy the neccesary materials. But when it comes to things like re styling the entire dashboard, we usually make the measurements and send it to the engineers.
The power suply is usually connected straight from the battery, for things like a standard head unit and maybe four speakers and a sub, but for very powerful amplifiers, what we do is, (depending on what type of car you got) we split the charge from the altenator and often put more tha 1 alternator and higher voltage batteries. |
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| Posted on Wednesday, September 17, 2003 - 08:09 pm: |
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my friend just got 2 10 or 8. and a 8in tube sub. they all are rated at 300 watts. they are car speakers. i am woundering how can i set them up in a house for temp use? i need help right away because we need them for a party and it is in a little bit. thanks |
Anonymous |
| Posted on Thursday, September 18, 2003 - 02:07 pm: |
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Hey guys, I am a college student and I did a project in high-school dealing with connecting car audio to home theatre. I found that an easy way to convert 120V AC to 12V DC is to use a car battery charger. Just connect the ground to negative and the positive and remote to positive. You can turn the charger on and off as you please. Another thing is that just like Josh Overkamp said, you NEED a car amp to connect the sub. It may cost some money but it saves both the home reciever and the sub. If you have any other ?'s, feel free to e-mail me at foothills_rocks@yahoo.ca. |
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| Posted on Friday, September 19, 2003 - 07:35 pm: |
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For hooking a car amp to a home system the Astron rs50m ($290) looks like the cleanest option to me, next would be the battery and charger if you don't mind the clutter. Looking at my computers ATX power converter, it will do 10 amps @ 12 volts. this a little low for an amplifier, so connecting 3 computer power supplies to a 1 farad capacitor (for increasing voltage and taking strain off the power supply) would probably give you enough power to run an amplifier(with a 30amp fuse) pretty well. its not as practical as the Astron rs50m, but it is just an idea. dejongbd@yahoo.com |
Anonymous |
| Posted on Monday, September 22, 2003 - 02:17 am: |
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Chris ur BIH wazup guess who this is?
y don't u just hire the sound for the party... |
M0N60 |
| Posted on Wednesday, September 24, 2003 - 10:59 am: |
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I agree with "White Stallion".
Just buying a power supply that is designed to produce 12VDC is the best way to go. My rs50m is very powerfull and very stable. It even has meters to tell you how much amps are being drawn. It has internal protection from over-voltage and stuff too, which the computer supplies and car chargers don't have.
To tell you the truth, it is capable of producing a whole lot more amps than my amplifier can draw. I probably should have went with something a little smaller....
Live and learn they say. |
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| Posted on Thursday, September 25, 2003 - 07:08 pm: |
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Hey everyone,
Maybe I'm stupid and I've missed this but how do you actually hook the amp to the power supply? I'm talking I want you to explain it like I'm a retard...details... Any help would be appreciated greatly, Thanks.
Contact me at miller_eric_2006@yahoo.com If you can help as I can't check this too often. Thanks again. |
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| Posted on Friday, September 26, 2003 - 07:42 pm: |
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hey if someone can please help me on how to convert AC-DC. i have the converter but no idea how to hook it up to the car amp. theres only 1 outlet screw for power.. how do i connect the 2 wires? |
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| Posted on Saturday, October 04, 2003 - 04:04 pm: |
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i got a power amp from a friend the other day and i dont know how it works. is there any way to test it? i am not gona hook it up to a car though, it will be hooked up to a 250 watt home stereo. can any one help me how to do that? i have 2 8 inch subs that are rated at 200 watts a piece. so that is 400w total and the power amp is 400 watts. i need help a.s.a.p. thanks |
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| Posted on Monday, October 06, 2003 - 02:45 pm: |
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Hi
I got 2 15" MTX Subs and a 1000W Sony Xplod Amplifier and I need to plug them on my Home Stereo. Any one knows how I could do so.
I know I need a AC DC converter but dont know how powerfull.
Thank a lot |
Robert Neal Alexander |
| Posted on Tuesday, October 07, 2003 - 12:01 am: |
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How do I ground my amp and get the remote to power on? |
M0N60 |
| Posted on Tuesday, October 07, 2003 - 10:07 am: |
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Pete,
A 15 amp power supply would be a good place to start. I wouldn't go lower than that.
Robert,
When you get a dc power supply, there is a power terminal and a ground terminal. Hook power to power and ground to ground on the amp. For the remote, just run a small wire from the remote terminal on the amp to the power terminal on the amp. So whenever you give power to the amp, it will trick the remote into turning on. |
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| Posted on Tuesday, October 07, 2003 - 02:11 pm: |
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thanks |
chris s |
| Posted on Wednesday, October 08, 2003 - 03:25 am: |
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well the parties is over... everyone got completely drunk, and all the subs blew....... |
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| Posted on Wednesday, October 08, 2003 - 06:32 am: |
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Hi, I have a 10" subwoofer, a car amp, a 12v car battery, and a head unit. I want it to be formed and put them for home use as sub unit. Can I do so? What do I need and how do I connect them up? As the major problem are due to the 'Remote' system and 'ignition switch' issue. I wish I can overcome this and put it as for home use and put in the car as needed. Please help... |
earl Parker |
| Posted on Thursday, October 09, 2003 - 02:18 pm: |
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What can i ground my car amp to in my house ... i understand how to hook the power supply ...
anyone ? |
Naughtybynatur84 |
| Posted on Sunday, October 12, 2003 - 07:06 pm: |
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Ya, i am new to this site but have a question maybe someone can answer me...if the amplifier can only supply what it takes in, but the Aston 25 amp power supply puts out more power than the amp can put out, is this power overload bad for the amp? might b a stupid question but i really don't know..can someone clue me in? thankx ppl |
naughtybynatur84 |
| Posted on Sunday, October 12, 2003 - 07:19 pm: |
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nevermind i think i answered my own question...
i have 2 Audiobahn Flame Q's with a Boss 4000 Watt amp with 4x 30 amp fuses...with a Astron 25 amp power supply...now here comes the hook up... |
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| Posted on Sunday, October 12, 2003 - 08:51 pm: |
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hey how do you hook a car radio up the house or is if possible?
any advice will be appreciated........ |
dwp |
| Posted on Monday, October 13, 2003 - 05:49 am: |
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hey patrick i'm dwp im 20 been experimenting with radio's since i was 12 first of all what size amp
cause all you really need is a battery charger 12v
or bigger but i hook up 2 12in prowler comp to a 1500 watt amp to two different house stereo's
all you do is connect both remote and pos+ pow supply for the amp to the pos+ on battery charger
and neg- you know to ground i've done it for yrs'
just don't leave it on or buy some kind of switch
hook the amp up to a stereo that has an input or aux . dwp holla at cha!!!!! you should be beatin soon hook it up as it would be in a ride |
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| Posted on Monday, October 13, 2003 - 08:38 pm: |
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hey man thanks in fact i have a brand new one in the garage and i think i can do what u r tellin me too. but one question can u hook the omp up to it too? |
Darnell Harold |
| Posted on Monday, October 13, 2003 - 08:57 pm: |
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I have a 300 watt amp in my car and 15 inch alpine...the power light on the amp comes on and everything but when i connect the Aux wires to the deck the sub dosent hit with the bass not at all..im thinking my deck is broken but i havent done anything to mess it up ...ne help would be great thanks all |
dark child |
| Posted on Monday, October 13, 2003 - 08:59 pm: |
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I have a problem ....when ever my bass hits hard my amp goes into protect mode or whatever...does neone know what is causing this ...i would appericate ne help |
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| Posted on Monday, October 13, 2003 - 10:03 pm: |
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hey dwp i have hooked up a car stareo to the battery charger but can u rounn the amp off of the same one or do i have to get another battery charger?? one more thing i got the radio hooked up but the battery charger does not put out enough juice can u hook two battery chargers up to the radio and to the amp?? |
Anonymous |
| Posted on Tuesday, October 14, 2003 - 06:34 pm: |
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This is for chris s. I know how your subs "blew". What happened was your subs were the same watts as the amp. For future reference, you should always have the subs more watts (at least 100 watts) than the amp. So in your situation your speakers are 400 watts total, so your amp should be like 300 watts to push the subs comfortibly. But dont let the amp be too low of watts. |
ineedhelp |
| Posted on Tuesday, October 14, 2003 - 06:37 pm: |
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Is there any way in the world that I can hook up my amp inside my house without a converter or battery, battery charger. HELP!!!!! |
Anonymous |
| Posted on Tuesday, October 14, 2003 - 06:40 pm: |
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dark child. How many watts is your amp & subs. If your subs are alot more watts than the amp, that could be why. |
Anonymous |
| Posted on Tuesday, October 14, 2003 - 09:50 pm: |
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RE:INEEDHELP
You cant hook up a car amp in a house without a converter or battery. THe power supply is totally different! |
RHINO |
| Posted on Tuesday, October 14, 2003 - 09:59 pm: |
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Chris C
The subs at the party probably blew because the ohms were different or the receiver shut down. 4 ohm car speakers have to be run parrell( hooked together ) to make 8 ohms. Most home receivers run at 8-16 ohms. Why? because it is cheaper for the manufacturer to do it that way |
