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Discussion Starter #1
Figured I would put this up on the board for those that have a CX5 or similar Mazda. This isn’t going to be a flashy build with anything crazy but it will have some custom work and it will involve good gear. I will also be comparing the current equipment to the AudioFrog equipment with pictures and impressions of sound. This will be a slow process because it’s not my primary vehicle and I’ve got a lot going on right now like most of you do.

Objective: build a good sounding sound quality oriented system using good quality equipment on a modest budget.

Current Equipment:
Celestion AN2775 2-3/4" Full-Range
NVX XSP65 mid woofers/same as SB17 with slightly better car oriented TS Parameters.
Sundown SA12 in custom ported 1.8 net box with 33 Hz tune
Pioneer PRS4200F class D 4-channel with ICE technology.
Infinity K1000 mono.

New equipment:
AudioFrog GB15 tweeter
AudioFrog GB60
AudioFrog GB12 D2
Rockford Forsgate Power 600 4 channel (May keep the Pioneer)
Rockford Forsgate Power 1500 watt class BD (May keep the K1000)

This car has been through a lot of different drivers, amps, subwoofers, and it has been fully treated from the fire wall back to the hatch including all doors with Second Skin Damplifier. I’ve started out with an AudioControl DQ61, passive Polk Audio comps, and a JL Audio microsub 8w3v3. This system sounded pretty good and I kept that system for a long time. I upgraded the tweeters to Morel MTD 12 and caught the bug to keep upgrading. The DQ61 was a nice piece that was easy to time align and just produced great sound. That system at the time used an old school Alpine 3548 2 channel amp and a Pioneer D8601. The Alpine I still have and may use that for the tweeters. It won out in my amp shootout because it just plain sounds good. I then sold the DQ and purchased the JL TwK 88 DSP and Pioneer NEX 1330 HU and eventually the NVX woofers and have tried lots and lots of tweeters and full range drivers. Too many to list.

I will post pictures in the next post but now I have to get back in the garage and get to work before my time runs out.
 

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Discussion Starter #3
you must be married,, lol garage time is timed earned...
You nailed it, right after I wrote that I went into the garage and my daughter waited till the last minute to do her homework. Wife started screaming at me to go help her with her homework so there goes that. :mad: I’m sort of the handy person in the household and was once an ASE Master tech so got three phone calls from family needing electrical and car advice in between all that too. :rolleyes:
 

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Discussion Starter #4
Getting GB15 ready to go in with 22uf capacitors. I have plans to install these in the A pillars later but want to have sound now. :laugh:

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Celestion driver being replaced. These have great sound and I used them tweeterless.

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Cheap but effective Harbor Freight tool screwdriver for tight spots.

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Stock door card with Second Skin from prior install.

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After Sonic Barrier sound treatment.

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My little fried goes where I go checking out the old sub.

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Discussion Starter #5
Some comparisons between the GB60 and NVX XSP65 which is the same thing as the SB Acoustics SB17NRXC35-4. It will be interesting to hear what the difference will be between these two in sound. The NVX XS65 are a really good sounding mid woofer in my book.

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Wow, for the price, the NVX/SB Acoustics driver actually looks pretty decent. Of course the Audiofrog fit and finish is out of this world nice.
 

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I've been most impressed with SB Acoustics in the bang for the buck arena. Including the Satori line.
 

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Nice. Just a heads up, i would up that cap on the tweeter to 47uf or higher. You shouldnt be using it as your actual crossover. Only something to block relatively very low frequencies
 

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Discussion Starter #9
SkizeR,

The cap is actually 47uf, which protects starting below 900 Hz. I thought I used the 22uf, which starts rolling off around 1800 Hz @ 6 db. They are there solely to protect from low frequency information from getting to the tweeter in case of a mishap, as this will be an active system electronically crossed over at around 2000-25– Hz 24 db.

greatlabroski, I’ve been impressed with the Sb drivers too. I really like the SB29 tweeter in my van. Listening impressions will be coming up when I get things installed and tuned.
 

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Discussion Starter #10 (Edited)
These are the Polks I first bought back in 2013/2014 for the CX5 about 5 months after I bought it. Not sure how but these mid woofers defy physics for a 6.5 because when it came to midbass they reign as king. I have had nothing yet that could do more than they could. They look like shit though and can’t match the NVX mids for tonal balance or clarity.

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I wanted to reuse the factory speaker spacer because it has the factory connector and puts the speaker at the exact right location behind the door card and it bolts up all nice and sealed to the sheet metal. They are a little light weight and weak for the GB60s so I came up with an idea.

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I found some leftover garage floor epoxy patch that I thought would be perfect for reinforcing the structure behind the spacer by filling in all those voids. I could also drill and tap this epoxy for a better screw bite. No sense in letting this go to waste so I got to mixing and applying it and it worked out perfect. It’s as solid as a rock; a nice foundation that won’t resonate or flex. It looks ghetto but I think it works extremely well.

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Now I just need to clean these up and mount the mid woofers. There is already second skin sound deadener applied to the outside frame.

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Discussion Starter #11
Got some garage time tonight without the wife’s eyes rolling like a slot machine and got the speakers mounted. I did a quick listen with no tune other than basic crossovers and all I’ll say for now is these speakers are promising, especially the tweeters. I will be tuning these babies this weekend.

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Top corner is the stock speaker. I cut it out with a utility knife to reuse the speaker mount you see the GB60 mounted to. I used Parts Express speaker gasket to seal the GB60 to the frame and seal the frame to the door. I love this stuff and use it on all my speaker installations. It’s the perfect thickness and width.

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Back side of stock speaker compared to GB60. That epoxy worked out extremely well and made for a solid foundation to mount the speakers to. I drilled it out and tapped it with a 4 mm x .75 pitch tap and threaded the screws right in it. I then added a nut on the back and hot glued the nut to lock it in place. The nut isn’t really needed but I like the extra security of having it there.

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All mounted and ready to go.

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In this last picture I cut up some boom mat speaker baffles to make some rain guards out of them. Even though the AudioFrogs are designed to be inside a door I don’t want to take any chances with speakers this expensive. I think this should be done on all installations to keep the water dripping down from the window seal above from getting into the voice coil or madnet system. I glued them in place with some good qaulity contact cement so they ain’t going nowhere! Next time you have a door card off, have a friend lightly spray the outside of the door and watch how much water gets in past that window gasket. The first time I did that I was like WTF.
 
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Got some garage time tonight without the wife’s eyes rolling like a slot machine and got the speakers mounted. I did a quick listen with no tune other than basic crossovers and all I’ll say for now is these speakers are promising, especially the tweeters. I will be tuning these babies this weekend.



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Top corner is the stock speaker. I cut it out with a utility knife to reuse the speaker mount you see the GB60 mounted to. I used Parts Express speaker gasket to seal the GB60 to the frame and seal the frame to the door. I love this stuff and use it on all my speaker installations. It’s the perfect thickness and width.



View attachment 239185



Back side of stock speaker compared to GB60. That epoxy worked out extremely well and made for a solid foundation to mount the speakers to. I drilled it out and tapped it with a 4 mm x .75 pitch tap and threaded the screws right in it. I then added a nut on the back and hot glued the nut to lock it in place. The nut isn’t really needed but I like the extra security of having it there.



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All mounted and ready to go.



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In this last picture I cut up some boom mat speaker baffles to make some rain guards out of them. Even though the AudioFrogs are designed to be inside a door I don’t want to take any chances with speakers this expensive. I think this should be done on all installations to keep the water dripping down from the window seal above from getting into the voice coil or madnet system. I glued them in place with some good qaulity contact cement so they ain’t going nowhere! Next time you have a door card off, have a friend lightly spray the outside of the door and watch how much water gets in past that window gasket. The first time I did that I was like WTF.


You should take some time to measure the difference those make to the frequency response. Install one door with and one door without then play mono correlated pink noise and measure with a mic pointing directly at the speaker.

Then if you really want to see what they're doing to the clarity of the midbass try listening to a few songs in mono and see if your ears like what they do.




Sent from my iPhone using Tapatalk
 

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Discussion Starter #13
You should take some time to measure the difference those make to the frequency response. Sent from my iPhone using Tapatalk
tony,

I'm not sure what you are referring to? Do you mean the speakers themselves or something else? I also already installed the door cards.
 

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Nice work. I am looking forward to your progress. I would love to hear your comparison between the NVX XS woofer and audiofrog GB60. I also run the NVX 6.5 woofer. I would like to upgrade to the audiofrog midwoofer, but I'm afraid the rest of my speakers won't compare in output or quality. Then I would have to upgrade the other speakers too. When does it end?
 

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CX5/AudioFrog build & Comparison

tony,



I'm not sure what you are referring to? Do you mean the speakers themselves or something else? I also already installed the door cards.


I'm referring to those speaker rain guard baffles. They will change the acoustics of the speakers. For the better or worst is based on measurements you have to make using your ears and a mic.

I installed one of those with a hole in it before and I didn't like what they did to the clarity of my midbass. It definitely gave it more SPL but at a cost of clarity. Just thought I'd chime in.


Sent from my iPhone using Tapatalk
 

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Discussion Starter #16
Nice work. I am looking forward to your progress. I would love to hear your comparison between the NVX XS woofer and audiofrog GB60. I also run the NVX 6.5 woofer. I would like to upgrade to the audiofrog midwoofer, but I'm afraid the rest of my speakers won't compare in output or quality. Then I would have to upgrade the other speakers too. When does it end?
Looking at your equipment in your signature and having Scan Speak for tweeters I don't think you will lose out on that end because its very nice equipment.

BTW, thanks for the complement.
 

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Discussion Starter #17
I'm referring to those speaker rain guard baffles. They will change the acoustics of the speakers. For the better or good is based on measurements you have to make using your ears and a mic.

I installed one of those with a hole in it before and I didn't like what they did to the clarity of my midbass. It definitely gave it more SPL but at a cost of clarity. Just thought I'd chime in.


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I thought in the past that might effect the sound but now you have me wondering. I can try that test when I redo the mids for my truck so I will definitely keep this in mind.

Thanks
 

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Discussion Starter #18 (Edited)
Got some more garage time today thanks in part to the snow storm outside. Also decided to reduce the size of these pictures so they load faster. Been working on tuning the front stage. The tweeters were very easy to tune and didn't require much at all. The woofers however are giving me the same trouble I had with the SB's, which is attributed to the interior design and doors. Not much I can do about that.

So now that the front stage is installed I wanted to get the GB12 D2 installed. I started a comparison thread comparing the AudioFrog to the Sundown in this thread.

The box I built for my Sundown is 1.8 cubes net tuned to 33 Hz, which is within the range recommend by AudioFrog. The issue was the GB12 has a slightly wider frame than the Sundown, and since the box is built to recess the woofer into the front baffle it didn't quit fit the GB12 by about 1/8". Solution, widen the front baffle opening with a router and circle jig. The problem was my big router is broken and I don't own a circle jig, so the Macgyver in me kicked in and I built my own, and used a laminate trim router I had kicking around with a straight flute bit. I took some left over ABS plastic I had from the F150 build and used that to make a jig.

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Then I screwed some scrap plywood into the opening to support the center section of the jig.

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And cut the opening which worked out great.

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Because I had to cut the outer opening off center from the original design I also had to rework the inner opening so that the GB12 would be centered to the new opening. I obviously had to cut the new opening off center to stay away from that edge. I made a tracing template out of cardboard to trace the new outer opening to the inner opening.

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Discussion Starter #19
Tracing of the outer opening to the inner opening using a piece of cardboard.

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Some bondo the fill in the old holes in preparation for the new sub.

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Just needs some sanding, a fresh coat of paint, and a subwoofer.

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Back to the garage.
 
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