Speaker question

My grandchildren gave me an ipod for Christmas. Got me intersted in a stereo for my 79. I built the box in the photo with two 6" midranges, a 10" subwoofer with an amp. I installed two tweeters in the side panels where the seat belts come out of, kick panel speakers, and new dash speakers and a new Pioneer that plays the ipod. I installed the ipod cable in the glove compartment so I can plug in the ipod and control it with the stereo. I ran two sets of RCA cables to the amp. One set for the tweeters/midrange and one set for the subwoofer as the stereo had an RCA connectio for subs that can be adjusted separately. Now you talk about fun with some old rock'n roll tunes with a lot of sax and drums. Pretty good for an old guy. HA! All the young kids in town love my Vette.
Just last night I pulled the old dash speakers out and put these new 4x6's in the dash. I haven't wired them in yet but it appears that the new speakers have a larger driver and will not fit well enough to put the factory speaker cover back on. The speakers did not come with speaker grill covers. Can I just buy 4x6 grill covers and put those on in place or does it have to be a specific Infinity grill that will fit?...
Any tips?
Most any 4X6 grilles should work.
Since both of your new speakers have 2 ohm impedence, you can hook the speakers on each side in "series", and the speaker set will total 4 ohms...probably a very good match for most head units and/or amps.
What does it mean when you said I could, "hook the speakers up in series?" I originally was hoping that the 4x6's would fit in with the factory covers but that isn't going to happen. It looks like I may go the speaker grill cover route. I guess not all 4x6's are made the same.....
Last edited by Smoking Gun; Sep 9, 2009 at 11:06 AM.
Speakers can be wired together in "series" or "parallel" manner. Series wiring is from + amp output to + terminal of one speaker, then from - terminal of speaker to the + terminal on the 2nd speaker, and [finally] from - terminal on 2nd speaker to - terminal on amp. Parallel wiring would be that all + terminals of the speakers are tied together and run to the + terminal of the amp; likewise, all - terminals of the speakers are tied together and run to the - terminal on the amp. If you hook two 2-ohm speakers together in series, they will total 4 ohms. If you hook two 2-ohm speakers in parallel, they will total 1 ohm. You need to wire the speakers so that they best match-up with the output impedence of your head unit/amp.
Also, most speakers are 'coded' for which lug is the 'positive' connector. Some have a colored dot painted/stuck by the + terminal connector. Some have a colored stripe on the wire going to the + connector. If your speaker has a "B" designation by one of the terminals, I would surmise that to be the 'positive' terminal. In DC-circuit lingo, B+ is used for the supply voltage; ^ is probably the 'ground' line. You also need to determine whether the negative speaker output is to be the same as 'chassis ground' or not. Some heads/amps have the speaker terminals isolated from the power source; others use chassis ground as the - speaker connection, as well. Follow the instructions on your head unit installation manual.
Last edited by 7T1vette; Sep 9, 2009 at 11:25 AM.
Speakers can be wired together in "series" or "parallel" manner. Series wiring is from + amp output to + terminal of one speaker, then from - terminal of speaker to the + terminal on the 2nd speaker, and [finally] from - terminal on 2nd speaker to - terminal on amp. Parallel wiring would be that all + terminals of the speakers are tied together and run to the + terminal of the amp; likewise, all - terminals of the speakers are tied together and run to the - terminal on the amp. If you hook two 2-ohm speakers together in series, they will total 4 ohms. If you hook two 2-ohm speakers in parallel, they will total 1 ohm. You need to wire the speakers so that they best match-up with the output impedence of your head unit/amp.
Also, most speakers are 'coded' for which lug is the 'positive' connector. Some have a colored dot painted/stuck by the + terminal connector. Some have a colored stripe on the wire going to the + connector. If your speaker has a "B" designation by one of the terminals, I would surmise that to be the 'positive' terminal. In DC-circuit lingo, B+ is used for the supply voltage; ^ is probably the 'ground' line. You also need to determine whether the negative speaker output is to be the same as 'chassis ground' or not. Some heads/amps have the speaker terminals isolated from the power source; others use chassis ground as the - speaker connection, as well. Follow the instructions on your head unit installation manual.
Another question: The old factory speakers have a special clip that connects the speakers to the factory wiring on the Corvette. Should I remove this clip and solder it on the new speakers and just plug them in the old factory speaker harness? Or should I cut the clips out of the factory wiring and splice the wires instead?
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I have to ask...did you test the speaker that's not working? How do you know it's not the tapedeck? Hate to see you rig up speakers and find out the orignal still works...
QUOTE]
I have to ask...did you test the speaker that's not working? How do you know it's not the tapedeck? Hate to see you rig up speakers and find out the orignal still works...
I have many of the same questions you do. I wasn't sure if the problem was the player or the speakers. I decided I would replace both anyway but could only afford one fix right now. Since the head unit install didn't work I'm going with speakers. I realize that I may install these and still get no sound but that isn't a problem since I can't hear anything out of the factory speakers when the car is running anyway.
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I also want to upgrade the sound-system in my '71(an old two-**** Sony AM/FM/Cassette unit going to two box-speakers resting in the storage area), but I'm not willing to cut anything, and I really want it to look as stock as possible, so much so that I'm willing to compromise on sound-quality (which will *have* to be better than the tin-cup setup in there now).
So if I'm reading the above posts properly, what would probably work best for me (though far from ideal, I understand) would be some tweeters/midrange tucked behind the speaker-grilles in the top of the dash, and something to provide the bass behind the original speaker-grilles in the factory kickpanels. Power those through something other than a Custom Autosound unit, which would give me iPod and thumbdrive connectivity and control?
What would I use to divvy-up the frequencies between the kickpanel and dashboard units, a crossover? And what would be the kind of speakers I'd want to put in the dash, and in the kick-panels? Do they sell individual tweeters/midrange units that would mount behind the dash grille? Or a bass unit to mount in the kickpanel?
Last edited by RunningMan373; Sep 10, 2009 at 08:37 AM.
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So if I'm reading the above posts properly, what would probably work best for me (though far from ideal, I understand) would be some tweeters/midrange tucked behind the speaker-grilles in the top of the dash, and something to provide the bass behind the original speaker-grilles in the factory kickpanels. Power those through something other than a Custom Autosound unit, which would give me iPod and thumbdrive connectivity and control?
What would I use to divvy-up the frequencies between the kickpanel and dashboard units, a crossover? And what would be the kind of speakers I'd want to put in the dash, and in the kick-panels? Do they sell individual tweeters/midrange units that would mount behind the dash grille? Or a bass unit to mount in the kickpanel?























