Stereo Integrity TM65 MkII drivers...

markesc

So how do those sound compared to some Hertz Hsk 165's bi amped? I broke down and had those installed in the stock locations, with a RF P600. Def a nice step up, but as always, there's room for more!!!!

RonRizz

No comparison. I had the 165XL's. the SI's murder 'em.

__________________
P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

markesc

Wow, quite the thread going on here:

TM65 mkII - Page 40 - Car Audio | DiyMobileAudio.com | Car Stereo Forum

We'll see how much of a beatin these Hertz can take for a couple of months.

ChopsZ

This is all copied from my thread over on the DIY Mobile Audio forum...

Okay, so plans have changed a little. For one, I am NOT installing the Helix amp. In fact, it's up for sale right now. I solved the intermittent issue with my Arc Audio amp. It has been running flawlessly for the past couple of months. Turned out to be faulty crossover switches in the amp. Simply bypass the internal crossovers and everything is fine.

So... as far as the subs are concerned, I ordered a pair of the Bazooka BT8024DVC 8" subs like I originally planned. The nice thing is, keeping with the Arc amp, I'm giving these subs a healthy, clean 600 watts instead of the 230 watts if I had gone with the Helix. Honestly, 230 watts would probably be more than enough, but I'm always one for plenty of headroom power.

Anyway, I removed the spare tire and strapped the subs down in the tire well, retaining ALL of my limited cargo room. Of course, the main benefit is maintaining a totally stock appearance. The only visible thing is the head unit. Even the "bass knob" for the sub channels is hidden, yet still easily accessible while driving.

For the actual install, I bought four 4' tie-down straps to use instead of the much shorter ones that Bazooka supplies with the subs. Reason being that the formed foam floor inserts in the 370Z has slots with velcro straps already going through them to hold down the various tire/jack/toe hook hardware in place. I wanted to use these same slots to "mount" the subs to, and the Bazooka straps simply wouldn't be long enough to reach over to and through those 8" thick foam inserts and still wrap around the subs.

And if you're familiar with that non-slip padded lining that's used in toolboxes, I used some of that under the tubes on the floor to keep the tubes from possibly slide forwards or backwards. I've got the subs snugged down pretty darn good and doubt they'd shift around, but just for that little added assurance, I threw some under the subs anyway.

Here's a few pics of the BT6028DVC next to the BT8024DVC, just for comparisons sakes. BTW, the 6.5" sub will be going into the girlfriend's little Fiat Pop - It's a great little sub!

From this little 6.5" giant...





To this...







To this...





To the untrained eye, you would never know there's anything out of the norm going on back there. The floor is just barely a touch higher than stock. I'll get some better pics in a few days...

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She's For Sale! PERFORMANCE: Aero Workz | Akebono | BC Racing | EcuTek | HKS | MaxBore | Motordyne | Nismo | RJM | SPL | StopTech | Z1
AUDIO: Arc Audio | Bazooka | Helix | Pioneer | Stereo Integrity

markesc

Ron, took me forever, but just ordered! (M25's + TM65III's)

After not having my car for 3 weeks and then getting back in on the drive home...um no... the hertz gots to go!!!

Thoughts on those M25 pods on ebay vs. stock location?

ChopsZ

Now that I've lost everyone's interest in this thread for going with Bazooka subs, I'll still post an update...

Going on two weeks of running these subs in, they have only gotten better.

Definition and speed has improved. Dynamic swing is shockingly good. Low end extension has seemed to "blossom" a bit more, making them reproduce some rather strong deep bass with plenty of weight and warmth. The upper end of the spectrum where they are crossed over (still at 80 Hz @ -36 dB) is much more controlled and clean, allowing them to blend even more seamlessly with the front stage.

I really wasn't expecting this level of performance from these Bazooka subs. They definitely perform above their price point, and definitely perform a LOT better than what most people claim (or rather complain/bash) about them. They're not boomy, they're not sloppy, they aren't lacking, they aren't thin, they're not noisy, etc, etc.

The fact that I'm getting this level of performance with this level of clean and controlled output in a completely stealth install in a car with extremely limited space, these subs have completely exceeded all of my expectations. I'm certain if anyone here heard my system, you wouldn't believe your ears. You would think there's a large sub enclosure sitting behind your head, out in the open.

Of course, this says a lot for the Arc XDi 1200.6 amp as well. Small, compact and efficient, yet packs a lot of clean refined power for the entire system with ample power reserves.

__________________
She's For Sale! PERFORMANCE: Aero Workz | Akebono | BC Racing | EcuTek | HKS | MaxBore | Motordyne | Nismo | RJM | SPL | StopTech | Z1
AUDIO: Arc Audio | Bazooka | Helix | Pioneer | Stereo Integrity

markesc

Version III's are out!

TM65 mkIII Woofer – Stereo Integrity

Wow.

9mm xmax vs. the 3mm I have... that's wild:

https://www.hertzaudiovideo.com/wp-c...rgy_HSK165.pdf

markesc

No takers on the updated vIII's?

Thinking of swapping out my hertz hsk-165's for these

CRiZO

Can you please explain why this is significant?

In calculating their peak diaphragm displacement volume (if I'm getting this right), the TM65 III is at 1258. I've been really happy with my 165's with a noticably lower 390. I just don't know what that means in application.

Is it basically having to move 3x less to hit the same frequencies? More efficient, meaning more volume out of the same power?

markesc

Well, I'm not a math whiz, but I after not having my car for 3 weeks then getting back in, I'm thinking there has to be room for improvement from the Hertz. I've had them for a year, but I just think there's additional room for improvement, however I cannot quantify the differences, but did notice the wild difference in xmax between the two brands which leads me to believe that the TM's must put out more bass / play louder.

I'll let Ron / others chime in on the technical part.

markesc

arrived!

TMIII's + M25's:

Attached Images

	IMG_7709b.jpg (402.6 KB, 56 views)
	IMG_7711b.jpg (526.5 KB, 57 views)

RonRizz

It doesn't have to get technical. The watered down version is this...To make lower frequencies (bass) you need to move air. The higher the xmax, the more cone travel you have to move air.

__________________
P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

bigaudiofanat

Honestly having had probably 13+ subs the worst sounding of the has been a bazooka tube. Respect or not you get what you pay for and if you like their sound so be it. but they IMO play one tone through all music.

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ChopsZ

It's funny, amazing actually how wrong you are in just about every post you make. I honestly don't know why people come to you for answers.

Your arrogance precedes you, and no one likes an arrogant person.

__________________
She's For Sale! PERFORMANCE: Aero Workz | Akebono | BC Racing | EcuTek | HKS | MaxBore | Motordyne | Nismo | RJM | SPL | StopTech | Z1
AUDIO: Arc Audio | Bazooka | Helix | Pioneer | Stereo Integrity

RonRizz

Kind of harsh.. He has contributed a great deal of info here over the years, Majority of it good stuff.
So he doesn't think highly of the bazooka tubes, who cares?? they're in your car. Your the only one who needs to like them.
I think they get a bad Rap, mostly because those who tend to buy them have no clue how to set them up, or buy an 8 and push it like its a 12.
I have used them in the past with great results, always liked them.....and Just now realized that they are still selling them. They must be doing something right.

__________________
P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals