opinions from the pros
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=117304
Printed Date: May 13, 2024 at 5:19 PM
Topic: opinions from the pros
Posted By: spmpdr
Subject: opinions from the pros
Date Posted: October 27, 2009 at 9:54 PM
I have a 2003 dodge ram reg cab p/u.I currently run 2 3" tang band neodymium drivers in my dash, a set of mb quart fsa 216 6.5 components in my doors powered by a kenwood 500 watt 4 channel and 2 12" re audio subs powered by a memphis 500 watt monoblock.My system sounds really good and im happy with it, but modification is in my blood LOL. I am thinking about building some kick pods for my truck and ditching the tang bands for the amp power.I was thinking of running some more 6.5 in the kick panels but I wanted to get you r opinions first. What i am asking specifically is 1)Should I ditch the tang bands and build kickpods? 2)If i do kickpods what size speaker should i use ? I believe i can fit up to a 6x9 so any suggestions would be great thanks!!
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-A vision without a plan is just a hallucination-
Replies:
Posted By: DYohn
Date Posted: October 28, 2009 at 10:51 AM
1) What's your system design goal? If it's SQ, you want to use only one main set of speakers. You might consider installing a 3-way set with woofers in kicks and mids/tweets in the doors. I'd get rid of all dash speakers if it was me unless maybe you use them as a center channel in a 5.1 setup. 2) 6.5" round speakers generally sound better and are more accurate than 6X9 speakers. ------------- Support the12volt.com
Posted By: spmpdr
Date Posted: October 28, 2009 at 5:14 PM
My system design goal is sq ,I would like to keep the mb quart fsa 6.5 components i have now i the doors and add a woofer like you suggested and ditch the dash speakers for the amp channels.Any suggestions on some woofers that are 75 watts rms? What size woofer would you suggest?
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-A vision without a plan is just a hallucination-
Posted By: spmpdr
Date Posted: October 28, 2009 at 5:30 PM
Is my mb quart fsa 216 set up a woofer /tweeter setup or a mid tweeter setup? Sorry if thats a dumb question but i always thought that 6.5 were 6.5 i didnt know there was a difference between a woofer and a mid .Could you please explain more for me thanks.Wich do i need a woofer or a mid bass to make a 3 way set up?
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-A vision without a plan is just a hallucination-
Posted By: DYohn
Date Posted: October 28, 2009 at 7:29 PM
The 6.5 in your component set is a woofer, and it also provides the midrange. If you add another woofer you'd also need to add a crossover at, oh, about 600Hz between it and the woofer in your comp set. This will allow the comp woofer to provide more accurate midrange, and will if you use a more efficient woofer increase the bass in the front of the cabin. Here's a great sounding option. ------------- Support the12volt.com
Posted By: spmpdr
Date Posted: October 28, 2009 at 8:49 PM
Do you have nay idea what hz crossover i would need? I cant find the hz range for just the mid in my comp set ,the only thing i found is that the crossover frequency range is 50 -32000 hz and it is 12db/4000hz crossover point. So im guessing the midrange is between 250- 4000hz?Do i put the speaker you recommended in the kickpanel?
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-A vision without a plan is just a hallucination-
Posted By: DYohn
Date Posted: October 29, 2009 at 9:58 AM
Your FSA 216 component set is crossed over at 4000Hz from the woofer to the tweeter. The woofer handles everything below 4000Hz. If you add a second woofer you'd put it in the kick panel and devise a low pass filter for it at about 600Hz, and a high-pass filter for the component set at the same frequency. This can be a basic first order 6db/octave filter... in fact at 4-ohms it would be a 1.1mh coil in series with the woofer and a 66uf non-polar crossover capacitor in series with the comp set input. ------------- Support the12volt.com
Posted By: spmpdr
Date Posted: October 29, 2009 at 12:09 PM
thanks again dyohn ,those parts are cheap too.Is parts express the best place to get that stuff? I didnt see the capacitor on there site .
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-A vision without a plan is just a hallucination-
Posted By: DYohn
Date Posted: October 29, 2009 at 12:31 PM
Parts express is one site. Also try Madisound or MCM Electronics. You may not find one cap the right size, you may have to use two or three in parallel to get to the total value you need. Wiring caps in parallel adds their capacitance values (and it's often cheaper than buying one large cap.) ------------- Support the12volt.com
Posted By: spmpdr
Date Posted: October 29, 2009 at 12:41 PM
would this be what i need for the comp set?
https://www.parts-express.com/pe/showdetl.cfm?Partnumber=266-205
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-A vision without a plan is just a hallucination-
Posted By: DYohn
Date Posted: October 29, 2009 at 12:48 PM
That'll work! ------------- Support the12volt.com
Posted By: spmpdr
Date Posted: October 29, 2009 at 1:08 PM
What about this inductor for the extra woofer?
https://www.parts-express.com/pe/showdetl.cfm?Partnumber=255-252
Thanks again dyohn your knowledge is much appreciated,You and some others on here should be given spiffs by manufacturers for selling there stuff through your knowledge!!!!
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-A vision without a plan is just a hallucination-
Posted By: DYohn
Date Posted: October 29, 2009 at 1:40 PM
Yep, that coil is perfect. You can hide it inside your kick panel. ------------- Support the12volt.com
Posted By: spmpdr
Date Posted: October 30, 2009 at 7:26 PM
dyohn ,are plan backfired dude!!!`The 7" vifa wont fit anyway on the driver side because of the e-brake.I was wondering if you could recommend a nice 6.5" for the setup
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-A vision without a plan is just a hallucination-
Posted By: spmpdr
Date Posted: October 31, 2009 at 12:23 PM
Heres my new idea, tell me what you think. Since i am going to use a 6.5 now i was thinking about using a q forms 6.5 component kick panel.Instead of installing a tweeter in the small round area provided I was going to make a port there for the mid bass. I used the round port calculator and with a 1" round port and .6cuft tuned at 35 hz i would make a 2.7" round port .Does this sound like a good idea? If it is ,What should the port be tuned to?I would still be using the crossover point of 600hz you suggested.
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-A vision without a plan is just a hallucination-
Posted By: DYohn
Date Posted: October 31, 2009 at 1:09 PM
Hi. Well there really is no or very little size difference between a typical 6.5" and a typical 7" woofer, but if you think using a 6.5" is better that's great. As far as converting a prefab kick into a ported enclosure, you're likely to have disappointing results. I recommend sealing the kick instead. HERE's a decent 6.5" that you might like. Yes, the crossover plan would remain the same no matter which woofer you add. ------------- Support the12volt.com
Posted By: spmpdr
Date Posted: October 31, 2009 at 2:03 PM
Do you think that vifa 7" will fit in the qlogic kick panel? If so ill stick with that one . What do i need to do to completely seal that enclosure up.
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-A vision without a plan is just a hallucination-
Posted By: DYohn
Date Posted: October 31, 2009 at 3:18 PM
Actually, if you're going to buy the Q-Forms kick panel, you'd probably be better off installing the midwoof and tweeter from your comp set in them and putting your new woofer in the factory door location. ------------- Support the12volt.com
Posted By: spmpdr
Date Posted: October 31, 2009 at 3:38 PM
If I decide to build a custom kick panel could i use these speakers for a good mid bass response.
https://www.parts-express.com/pe/showdetl.cfm?Partnumber=264-832
I will probably design my own enclosure because I already have custom door panels with the tweeters flush mounted and I dont want to replace those.I just like the look of the above speakers but if you think i would get better sound qaulity out of the vifa's then I will go with those.I was also looking at those 5.25 tang band subs they are more within the specs of my amp's power ratings,have you heard those before.They have amazing reviews.I talked to an installer about those 7"vifa's and he said theres no way to get them in the kicks without them hitting the ebrake , but after talking to you and checking the specs Theres is only about a .25 " of difference in the outside area of the speaker and about .35" depth wise to your average 6.5 . thanks again for the info
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-A vision without a plan is just a hallucination-
Posted By: DYohn
Date Posted: October 31, 2009 at 4:16 PM
I am currently using a pair of those 6.5" TB subwoofers in my daily driver. Those are subs, and darn good ones, but would not be the best solution as the woofer in a 3-way setup like I am steering you toward. One of these would be a much better choice: https://www.parts-express.com/pe/showdetl.cfm?Partnumber=295-308
https://www.parts-express.com/pe/showdetl.cfm?Partnumber=299-250
https://www.parts-express.com/pe/showdetl.cfm?Partnumber=299-262 ------------- Support the12volt.com
Posted By: spmpdr
Date Posted: October 31, 2009 at 11:39 PM
Is that vifa 7" better sounding than those 6.5 you listed?There isnt really any difference in mounting depth between them and total outside area is onle a .5" difference or so,I dont think that installer knew what i was trying to accomplish or didnt care.How di i completely seal the kick panels from the back.Do i just dynamat the metal behind the kick panel and make sure the holes are covered?
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-A vision without a plan is just a hallucination-
Posted By: spmpdr
Date Posted: November 01, 2009 at 10:01 AM
If I wanted to go with 5.25's do these look loike a good option?
https://www.parts-express.com/pe/showdetl.cfm?Partnumber=264-873
If you have any other suggestions those would be great to .
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-A vision without a plan is just a hallucination-
Posted By: spmpdr
Date Posted: November 02, 2009 at 3:51 PM
I tried to fab up the 7'' vifa and it just wont fit.My new idea is to put the 7" in my door and take 6.5 and put it in the qforms kick panel but wire it the same. So now my new question is this : If I move the component 6.5 down to the kick panel but leave the tweeter in the door and put the 7" vifa in the door will there be sound issues because I split the component set to far apart?
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-A vision without a plan is just a hallucination-
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