D0T-C0M Posted March 23, 2007 Report Share Posted March 23, 2007 I have a sony CDX-GT310 in my toyota pickup. It puts out 4x55w in 4 ohms. I have just have cheap 2-way speakers installed in the front and back. I got 6"round 120W in the back and 4" round 2-way 90W in the front under the dash almost.I know its a cheap system but it sounds ok except I find the higher freq sound is muffled in the front but sounds ok in the rear. I would like to obtain more treble sounds from the front to try to equalize the sound a bit. I was thinking of adding a tweeter in each door by paralleling the front speakers but I'm concerned with the impedance. I guess the question i have is if I disconnect the existing tweeter in my front 2-way speakers, will that allow me to connect my door tweeters in parallel with the front speakers and return the impedance back to the original value? Also at what frequency do you recommend I crossover at?What other methods could I use that doesn't cost an arm and a leg. I'm looking to spend no more than $100 to try to equalize the higher mid range and tremble frequencies.thanks in advance. Quote Link to comment Share on other sites More sharing options...
audioguru Posted March 23, 2007 Report Share Posted March 23, 2007 Hi Dot-com,I wondered, "55W per channel? How do dey do dat??"In Google it is 17Watts RMS per channel into 4 ohms. That might be with 10% distortion because it is turned up too loud, and with the battery overcharging at 14.4V.It is probably only 15Watts RMS per channel into 4 ohms at clipping with a 13.8V supply.Or it is 55 Whats per channel?Disconnect the tweeters in the front speakers and connect good new tweeters in parallel. A lot of car speakers are garbage so get good name-brand ones. They should come with a crossover capacitor attached. Quote Link to comment Share on other sites More sharing options...
D0T-C0M Posted March 23, 2007 Author Report Share Posted March 23, 2007 Hi audioguruYes its here's the link for the specs. It does say 4 x 50 W S-MOSFET power output but its probably peak watts.http://www.sonystyle.ca/commerce/servlet/ProductDetailDisplay?storeId=10001&langId=-1&catalogId=10001&productId=1003305&navigationPath=n32150n32153At what frequency should I crossover my tweeters at? I have the choice from the supplier. Also what brands are considered good brands when it comes to tweeters? I would really love to install new speakers but I am really limited to in the choice of speakers I can use due to the limited space I have in my truck. Quote Link to comment Share on other sites More sharing options...
audioguru Posted March 23, 2007 Report Share Posted March 23, 2007 I never bought separate car tweeters.Get dome tweeters with a 3/4 inch diameter dome (not just an old cheap paper cone) with magnets. Piezo tweeters sound terrible and are just whistles.If the crossover network has an inductor and a capacitor or two inductors and a capacitor then a 3kHz crossover frequency is safe. If it is just a capacitor then 5kHz might be OK.The marketing departments of car radio amplifier manufacturers are full of liars. The output of your car radio is at most, only 17 Watts per channel. It is probably 15 Watts per channel at clipping with a reasonable battery voltage. Quote Link to comment Share on other sites More sharing options...
D0T-C0M Posted March 23, 2007 Author Report Share Posted March 23, 2007 thanks againjust one other thing, I have a pioneer GM-H100 amp that I haven't been using that can be connected 2x50W or 1x160W , how could I best utilise this amp, 1- by driving my rear speakers or 2- connecting it to one 10" sub? Quote Link to comment Share on other sites More sharing options...
D0T-C0M Posted March 23, 2007 Author Report Share Posted March 23, 2007 Ok so are these tweeters here going to do me justice?Pioneer Tune-Up Tweeter * 7/8" PPTA (P-Phenylene Terephthal Amide) Hard Dome * Strontium Magnet with Magnetic Fluid Cooling * Built-in Crossover (6 dB/Octave) * Surface or Flush Mounting Capabilities * Overall Housing Diameter: 1 7/8" * Flush Mounting Depth: 3/4" * Tweeter Type: PPTA Hard Dome * Size: 7/8 inch * Crossover Included: yes * Sensitivity: 90 dB * Frequency Response: 2,500-30,000 Hz * Recommended RMS Power: 40W * Peak Power Handling: 120W Quote Link to comment Share on other sites More sharing options...
audioguru Posted March 23, 2007 Report Share Posted March 23, 2007 Your 6" rear speakers are too small for bass, so get a 10" sub in a pretty big enclosure (made for pickups) and use the Pioneer amplifier connected bridged for 160 real Watts.I hope the Sony car radio has an output for a subwoofer amplifier.There aren't any spec's for those tweeters. Go to a dealer to hear them. Quote Link to comment Share on other sites More sharing options...
D0T-C0M Posted March 23, 2007 Author Report Share Posted March 23, 2007 yes the sony has a sub out. I updated the specs for the tweeters for you to comment.Thanks I appreciate your input Quote Link to comment Share on other sites More sharing options...
D0T-C0M Posted March 23, 2007 Author Report Share Posted March 23, 2007 Ok I installed the above tweeters and it made a hell of a difference. I'll have to figure out how to get a 10" sub installed in my truck without taking too much space now.Thanks AudioGuru for your input. Quote Link to comment Share on other sites More sharing options...
elix Posted March 25, 2007 Report Share Posted March 25, 2007 i recommend mb quarts, and a cheap spl meter and test cd you can use the on board eq to adjust to taste. Quote Link to comment Share on other sites More sharing options...
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