Stereo Integrity TM65 MkII drivers...

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.

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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:

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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.

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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