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Speaker setup...clueless

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Old 02-06-2008, 10:15 PM   #1
rwdfan
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Default Speaker setup...clueless

Ok, a year or so ago. I bought a set of speakers, a deck, and an amp for my old miata, these were not originally purchased for my mustang. I am thinking now that my salesman was an idiot. Im looking at amps and noticing they all say mono and subwoofer...The guy said my 300 watt component Alpine Type R's were too much for the Alpine 9855 Deck to handle. So I ended up getting a 300 watt amp that handled the speakers... Now I want to put that setup in my stang, and I realized I have to put in a set of 6.5's and 3.5's...I want some higher powered ones...I was doing the math of putting some Alpine 6.5's which are 250 watts and some Infinity Kappa 32.7 CF 3.5's, which are 105 watts. Thats an additional 355 watts...Does that mean I haveto upgrade to an amp that handles 655 watts? Or add another amp? Thats a lot just for a system with no sub... sooo... can someone explain all this mumbo jumbo to me?
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Old 02-06-2008, 11:08 PM   #2
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Default RE: Speaker setup...clueless

Those are max power ratings.

I have seen 3 1/2" Pyramid speaker enclosure things with a 1" tweeter claiming they could take 600 watts.

Average component your looking at 75-125 watts rms per side.
Coaxials 30-75 watts is plenty.
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Old 02-07-2008, 12:35 AM   #3
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Default RE: Speaker setup...clueless

I still dont know what that means. Can I run those speakers all off of that one amp? Maybe I can run some off of the built in amp off the deck? Or are you telling me that I should buy speakers that put out less power...or rms...whatever.
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Old 02-07-2008, 01:11 AM   #4
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Default RE: Speaker setup...clueless

Speakers dont put out power.

I wouldn't suggest ever running any speakers off a deck, unless their factory speakers. You also dont want to run any speakers aside from a subwoofer off of a monoblock amplifier, you want a Class A/B. If a sales person sold you all mono amps for a full setup, go back they and drop kick him in the chest.

If you want to run a front and rear stage, you'll want a 4 channel amplifer, and an additional amplifier for your subwoofer(s), which could be a mono or a A/B amp. Or a 5 channel amplifier to run everything, if thats what you really want. Saves space and alot of times money, but you can't really get crazy or do much else rather than have an average all around system. They are also usually pretty big. I would stick with doing separate ones so you can always move them to another car, or do different projects with them rather than just always having one amp. But thats just me.
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Old 02-07-2008, 08:44 AM   #5
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Default RE: Speaker setup...clueless

I concur.
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Old 02-07-2008, 09:49 AM   #6
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Default RE: Speaker setup...clueless

Thanks guys, but one more question. Ok, how big of a 4 channel amp do I need to handle the speakers Im talking about putting in? I dont want a sub, its a convertible, barely any room as it is, and I like having a back seat. Can someone check for me? Please? I normally dont ask stupid newbie questions like this...but I have no freaking clue... Lol. Im going to have to find a fsm on how to do this once I get the speakers.
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Old 02-07-2008, 10:00 AM   #7
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Default RE: Speaker setup...clueless

You can get some subs in there that will get it done if you want, but you might have to switch to something that works well in a small sealed enclosure. I'm not sure on the ALpine's.

As far as an amp, what's the budget for the amp?
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Old 02-07-2008, 12:33 PM   #8
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Default RE: Speaker setup...clueless

actually there is no reason you should need an amp for the dash 3.5"s as small as they are. I would put a bass blocker on them and be done with them.

What are you wanting out of the stereo? What do you listen to and how long do you think you will keep it? Everyone that asks about stuff on here gets pointed into a competition hopefull system with 2-3 amps and no rear speakers. If you just want to get some better sound you can do so without going overboard and getting over your head(you sound a little new to this?). We see people jump on something that they think is a good idea when they think they know what they are doing and realize later that it was not what we needed?
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Old 02-07-2008, 03:21 PM   #9
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Default RE: Speaker setup...clueless

Well I already have half of the stuff needed. Its all Alpine. I want some hard hitting quality sound, better than my old shaker 500 in my 06 gt I had. I dont want subs. I dont need them. I would rather have trunk space. An amp is already going to take up space. I found out my alpine amp has these specs
[ul][*]50 watts RMS x 2 at 4 ohms[*]70 watts RMS x 2 at 2 ohms[*]140 watts RMS x 1 bridged output at 4 ohms[*]stereo or bridged mono output[/ul]its a 1/2 channel...so does this mean it would only work for 2 speakers? I also dont understand how all this works [:@] what do you mean I dont need an amp for the 3.5's...can I put them on the decks amp...I dont need a fancy amp, I just need to know what rating of amp I need, how many watts. Heres a rundown of the speakers Im going to use. 1 set of Alpine type r 5X7's, 1 set of Alpine type r 6.5's, and either the tweeters off of my component Alpines... or those Infinity Kappa 32.7 CF 3.5's. So...what do I need to be looking at, the rms, the peak...watts... how do I figure out what kind of amps rms i need. Do I add them all up...or what. per speaker, or per set. GAH!
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Old 02-07-2008, 03:45 PM   #10
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Default RE: Speaker setup...clueless

D E E P BREATH.......a n d ...... here we go....

your amplifier is a two-channel amplifier, meaning it will power ONE set of speakers, like the front left and right or the rear left and right.

bridgable means that you can combine the channels into one channel and power something like a subwoofer OR if you had a four channel amplifier you could run a set of speakers by combining two of the four channels into one channel and the remaining two channels into one other channel or you could take a four channel and combine two of the channels into one for a subwoofer and the other two for a set of speakers.

If you were to use this amplifier, it would be for a pair of speakers. It would constantly feed each speaker 50 watts if wired at 4 ohm. If you were to bridge them you would have a one channel amplifier sending 140 watts. I personally would take that amp back and get something else. you can get more power for the same amount if not less than what you paid for that amp(if bought retail). I'm sure those Alpines can handle more than 50 watts.

Lets take care of your equipment issues first and go from there. do you have 4 or 6 speakers in the car? Are your 6.5's components/coaxials or just a woofer?
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Old 02-07-2008, 03:54 PM   #11
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Default RE: Speaker setup...clueless

They are not woofers...I think. I have not bought them yet, I already own the 5x7 type r speakers and tweeters from my old car, an alpine deck, and the amp. I cant take the amp back, its 1 year old, as is all the equipment. So basically, I cant use this amp to power the 6 speakers in my car. I need a different amp? Basically, I just bought this mustang, and am reusing my old stereo equipment from my old car. I am also going to buy some new equipment, like the 6.5's and 3.5's because, well, this car needs them. So, I can get whatever I need as regards the 6'5's and 3.5's. Whether they be woofers...or whatever.
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Old 02-07-2008, 03:54 PM   #12
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Default RE: Speaker setup...clueless

That guy really did take you for a ride. You have speaker options for 3.5"s in the dash, 6.5" in the front door, and tons of options for the rear.

Are the 6.5" you have comps or coaxs?

Being a newb, i would go with6.5" coax's all around. There is one amp, all speakers easily installed, done deal. unless you wanted some other setup, but it sounds like you are fresh to this.

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Old 02-07-2008, 04:04 PM   #13
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Default RE: Speaker setup...clueless

Ok, hold on. I was not taken for a ride. I bought an alpine deck, amp, and the 1 set of component 5x7 type r's. This was installed on a miata. I have sold that car long since, I have these audio pieces sitting around, and I now just purchased last week this 1989 mustang. It could use some nice speakers, I am planning on reusing these speakers if possible and buying additional ones for the other spots. I am just wanting to reuse as much as possible and not buy craploads of amps and stuff. I would like to reuse the 1 set of 5x7's and not have to buy 6.5's instead. Did I explain that properly? Im outta breath. lol
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Old 02-07-2008, 04:38 PM   #14
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Default RE: Speaker setup...clueless

Got it! Now it all makes sense. I misread the first post too. My fault. Ok. the 5"x7" will work in the rear applications, but i would go with 6.5" in the front doors and not worry about the 3.5 in the dash. It will be much better with the 6.5 than the 3.5. You can run the 5x7 off the deck and the 6.5 off the amp. I would go with something like this for the 6.5

least expensive
http://www.woofersetc.com/index.cfm?...roduct_ID=4597
or
mid expensive (and make matching)
http://www.woofersetc.com/index.cfm?...roduct_ID=3733
or
nearing $100
http://www.woofersetc.com/index.cfm?...roduct_ID=4589
or
$100
http://www.woofersetc.com/index.cfm?...roduct_ID=3066

It feels like you don't want to spend a lot, but those are my recommendations up to $100. But please trust that if you don't want subs, you are going to want 6.5 over 3.5. Otherwise, you will have minimum bass.
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Old 02-07-2008, 04:57 PM   #15
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Default RE: Speaker setup...clueless

I was going to do the 6.5's, the 5x7's and the 3.5s. But I guess I could just put my tweeters in the 3.5 slot, the 5x7s in the back powered by the deck and the 6.5s in the front doors powered by the amp.
I would like to keep it type R, they are the more powerful ones. The Alpines you linked to were only type S...which even though is higher on the chain alphabetically, they are lower in power comparatively. Kinda stupid.
I was going to put these in, but in a 6.5 version. they dont have it on this site.
http://www.woofersetc.com/index.cfm?...roduct_ID=5243

This is what I was looking at
http://cgi.ebay.com/Alpine-SPR-17C-6...QQcmdZViewItem
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Old 02-07-2008, 05:05 PM   #16
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Default RE: Speaker setup...clueless

now keep in mind, they can HANDLE more power, and they handle 100 watts. You are concerned about RMS wattage. Even though they can handle 100 watts, your amp only puts out 50 watts. That's why i was looking at somehting like the CDT's or Zapco's or Diamondsor something along those lines because they are more efficient. Since they are more efficient, they willuse less power and produce just as much sound as something using more power.
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Old 02-07-2008, 05:55 PM   #17
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Default RE: Speaker setup...clueless

hold on, we are going a little fast here.

"its a 1/2 channel...so does this mean it would only work for 2 speakers?" - no. It has a rating for 4ohm and 2ohm which means that you can run multiple speakers off of the amp. Car audio speakers are generally 4 ohm speakers(watch out for some of the infinity stuff) which means with a pair of 4 ohm speakers on that amp, you will get 50 watts to each speaker. Now if you take a pair of 4 ohm speakers and wire them in parallel(do a search and you can find a parallel wiring schematic, it is easy) to that amp you will get 35 watts to each of the 4 speakers. The bigger the speaker the more power it generally needs ok? So a 3.5" being so small it does not need much power at all(just needs it to be bass free), a 5 x 7 will take a little more but still can play fine off of deck power. With a descent amp(like you have) it will sound better with more power.

you will not gain any sound by switching to the 6.5's to be honest, you can probably fit the speakers you have. If you have the speaker and had it installed prior then you know what to expect. Don't let these kids spend your money on a system that they will never hear..........
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Old 02-07-2008, 06:05 PM   #18
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Default RE: Speaker setup...clueless

Ok, so I am thinking I will do this. Run my Alpine tweeters in the 3.5 spot for now, put my 5X7s in the back hooked up to the decks amp, and then buy some 6.5's for up front, but power those by the amp. Ok. So...Now. How do I set up this bloody stereo? Does someone have a fsm handy on how to hook up my whole setup in my car. I am going to buy a harness and a deck kit. Does anyone know how I make these Alpine speakers fit in my car? I think they need special mounts, right?
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Old 02-07-2008, 07:16 PM   #19
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Default RE: Speaker setup...clueless

ttocs, won't he get better frequency response though with the 6.5's? I wasn't suggesting more sound as in SPL, but better response as in bass. and if he runs the 5x7's in the back and only the 3.5's in the fron high passed, where is he going to hear any bass? i'm not talking about crushing bass, but just any bass at all....
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Old 02-07-2008, 09:16 PM   #20
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Quote:
ORIGINAL: joeybutts

ttocs, won't he get better frequency response though with the 6.5's? I wasn't suggesting more sound as in SPL, but better response as in bass. and if he runs the 5x7's in the back and only the 3.5's in the fron high passed, where is he going to hear any bass? i'm not talking about crushing bass, but just any bass at all....
there is so much just a little off in this post. First about the bass responce in the 6.5's. NO, he will get no gains from 5 x 7 to a 6.5 and would not be able to hear the difference between the two unless they were contrastingly different speakers. The surface area of the speakers is about the same, as well as power handling and if you start talking about an oval speaker can't reproduce the sound as well as a round one then we need even more help. If he had better bass responce, he would probably have better SPL(sound pressure level is a measure of overall sound but especially bass).

Why would the rear 5 x 7's have no bass?

He has all this equipment and was happy with it enough prior to pull it all out, why are we re-inventing the wheel. Keep it simple......
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Old 02-07-2008, 09:16 PM
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