Beat Sonic amp

[nismo95tt]

Has anyone done a Cerwin Vega or JBL "Spare Tire Sub" upgrade in conjunction with the Beat Sonic Amp? Anything important to know?

 

[Schantin]

I just looked up the Beat Sonic and the website says it works for Bose and non-Bose Zs.

Has anyone used this amp on a Sport Z?

I was operating under the assumption that the Sport Z didn't have an external amplifier like the Bose does.....

I have one on my Sport Z. Cleaned up and noticeably amplified the cabin speakers. The RCA outputs also provide a direct connection to a stand-alone subwoofer in the hatch. That was the main reason I added it. it's the "interface" between my head unit and the Pioneer amp/sub I have in the spare tire well.

 

[socketz67]

I just installed the Beat Sonic Amp. The difference in sound is night and day! The sound is crisp and now I have bass!
Install was tedious and lengthy. Lots of dash parts need to be removed. Very doable. Highly recommended!

Can you comment a little on the quality of the sound. 50W x 4 seems like a large bump for the factory door, dash and rear side panel speakers. Doubt that their amp is doing anything with the sub as it has an amp of its own.

Did some research and my findings are below for the Bose Setup

Front Doors
6x9"
28157-JL00A (28157JL00A)
https://parts.nissanusa.com/parts/nissan-speaker-28157jl00a
Note: It appears to be a 6x9" housing (Crutchfield agrees on the size as well), but the speaker itself appears to be a round driver, maybe 6.5"

But this person on eBay is selling a complete setup and those are indeed 6x9" speakers: https://www.ebay.com/itm/267136093133

Dash
1.75-2.75" "Twiddlers" (some say it's 2.5")
28152-6GG0A (281526GG0A)
Note: I recall watching an upgrade video once where the poster claimed there were two OEM drivers in this location, attached to a single housing.

Rear Side Panels
4"
28154-1BP0A (281541BP0A))
https://parts.nissanusa.com/parts/nissan-speaker-281541bp0a
Note: Look at the pic in the link above of the magnet, says max 40W and that's at 2 ohms if I'm not mistaken. So at 4 ohms the power handling would be something in the range of 20-25W

Spare tire mounted sub
2 x 5" with integrated 70W amp
28170-5AA0A (281705AA0A)
https://nissan.oempartsonline.com/oem-parts/nissan-speaker-281705aa0a
Note: I've seen some places that state there are two 8" speakers, but I don't think they'd fit; 5" seems more realistic. The speakers themselves are 1ohm each, so the amp is likely running the load in series at 2ohms

The Beat Sonic guys are in my neck of the woods, so I will call them tomorrow and figure out how they are managing the power distribution at 4ohms into 2ohm loads. They designed a 4 channel amp, so I'm assuming they figured the electronics out.

 

[RHE2026]

Hey I was wondering how much rms power the original Bose amp is putting out to each speaker. I can’t find any specs on it.

 

[socketz67]

Hey I was wondering how much rms power the original Bose amp is putting out to each speaker. I can’t find any specs on it.

It's too early. Maybe we can find something buried in the Q50 (or Murano?) forum that is similar to this thread on myG37.com: https://www.myg37.com/forums/audio-video-and-electronics/279822-2013-g37-sedan-bose-analysis.html

It's Nissan, so we know they are reusing parts from the bin. The Studio on Wheels setup in my 2013 G37S RWD, sounds noticeably better than the setup in the Z, which is a little dissapointing. I don't want to hack the entire audio setup, so I am looking for ways to improve what's there.

200W total, 50Wx4 is what I am guessing as that's what Nissan has used for a few decades now: https://forums.nicoclub.com/bose-audio-watts-t489503.html

This matches Beat-Sonic's output, but the impeadance is different and that changes things a bit (Ohms Law).

I will call the Beat-Sonic guys (or maybe even email them) today/tomorrow as I've heard they are responsive. Will post my findings here so others can benefit.

 

[RHE2026]

I was wondering how much to the subwoofer also. I had a 2005 350 and the sound system had plenty of power. I think Nissan just should have put a built in EQ and that would have made a big difference with just tweaking the frequencies going to the subwoofer and all the channels

 

[socketz67]

I was wondering how much to the subwoofer also. I had a 2005 350 and the sound system had plenty of power. I think Nissan just should have put a built in EQ and that would have made a big difference with just tweaking the frequencies going to the subwoofer and all the channels

I'm sure the speakers are all crossed over to some degree as that optimizes the modest power from the factory amp. In the article I posted above, the audiophile that did the analysis of the Studio on Wheels actually explained where Nissan/Bose made tradeoffs and offered ways to improve the sound through simple RC filters.

I've been to this rodeo a couple of times, so I'm sure that I can figure out a means to vastly improve the OEM setup without tearing everything out and starting over from scratch.