After installing a Sony XAV-AX6000 head unit and getting everything setup I decided I want to go the next step and add a subwoofer. Not because the Sony ruined the sound by any means, it just gave me the itch to get even better bass. I don’t really want to give up trunk space so I decide to try the JBL BassPro Hub since it fits in the spare tire but still offers a very respectable 11″ woofer. Unfortunately, I didn’t measure everything before I ordered it and I found that it doesn’t not fit properly in the space where my spare tire is on my 2015 Mazda 6 Touring. Hopefully owners of this car looking into this option don’t make the same mistake I did.

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Photo of the stock Mazda radio

I have driven a 2015 Mazda 6 Sport with the non-Bose stereo since it was new and the number one complaint I have had is the stock radio. Mazda only offered this style of deck in the 2014 and 2015 model year 6 and then replaced it with a better, more capable unit in 2016. To say this deck is bad is an understatement. The only redeeming quality of this deck is that it is a double din sized unit that can be replaced at all. Even at the time of release this deck was a bit behind on technology including support for Pandora, iPod and USB sticks with music. Everything other than the CD player and FM/AM radio was very poorly implemented. iPods were already almost entirely replaced by smart phones at time of release yet it could rarely actually load music from an iPod or an iPhone running Music.app. Reading music from a USB took ages and browsing the music cumbersome, not to mention who wants to manage music on a USB stick? Pandora? I don’t know anyone who uses it. The CD player did work but showed the bare minimum information on the screen. Contrast this to my wife’s Toyota van which could often show cover art and just looked much more slick overall.

It would have been ok if the bluetooth implementation wasn’t riddled with bugs and annoyances. Starting the car and waiting for bluetooth to connect to your phone took minutes, sometimes several. Once it did connect, it would often fail to play music properly by either refusing to do anything or acting like it was playing but lacking any audio. If you were on a call when you started the car you would be presented with a crash/boot loop where the car would take over the call, crash sending the call back to your phone only to steal it away again when it started. This would loop forever until you ended the call. Once it was playing music it couldn’t tell you what track number you were on or the amount of time spent playing. The track number was something random and the timer always sat at 0:00. Moving between tracks was glacial with at least a second spent waiting for the song to change, including the title shown on the display. Overall the experience was subpar in every way.

All that said, I felt trapped into keeping the deck because it was responsible for controlling some configuration settings of the car including daytime running lights, door locking behavior and more. I had basically given up all hope of replacing it because I didn’t want to create new issues or lose steering wheel controls.

It wasn’t until 2024 that I learned there are devices that allow you to better integrate aftermarket decks with modern cars allowing you to keep your steering wheel controls and continue to access vehicle settings. I decided it was time to finally replace the stock deck. In this post I will detail what products I used to replace the stock radio in my 2015 Mazda 6 and what I learned throughout the installation process.

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Many audio formats have come and gone over the years with some of them being better than others. Music on physical formats, particularly vinyl, have been increasing in popularity year over year. In addition to vinyl records, I personally have been adding to my CD collection. In order to actually play CDs I had to buy a CD player (or two) because I have either gotten rid of the players I had or they failed. To date, I have a total of three CD players. Two Sony 5 disc changes and a Sharp DX-200 single disc player. These units all needed some amount of effort in order to get them back into shape.

Not content with just CD and vinyl, I decided it was time to get into one of the few formats I had never owned or even used before. Minidisc. As described by Wikipedia, Minidisc is an erasable magneto-optical disc format that allows users to record sound either in real time or, using specific equipment, transfer data using a USB connection. The discs can be reused like a cassette but unlike a cassette they are digital and provide near CD quality. Minidisc uses a proprietary, lossy compression system that allows it to fix 60-80 minutes of audio onto a single disc. Unlike CD+/-R, Minidiscs can be modified, on the player, after the fact with text info, track arrangement and even editing of where tracks are split. All in, the Minidisc format feels incredibly ahead of its time even today. There is no other format that is remotely close to what Minidisc can do outside of sitting at a computer and fiddling in software. While it is true that Minidisc’s features are superseded by music software like Apple’s Music or Spotify there is a real and undeniable charm to the format that makes it fun to use even today. Later iterations of the Minidisc format provided additional capabilities which you can read about at https://www.minidisc.wiki//technology/start.

Minidisc recorders and players come in a number of form factors including portal players that are barely larger than the discs themselves (aside from thickness) to full HiFi component sized units. While the HiFi component size is my preference there are few that support NetMD, or a USB connection for interfacing with a computer. Many portal players, even earlier models, support NetMD for quick transfer for music from a computer to the Minidisc.

The player I picked up is a Sony MDS-JE500. This model, from 1997, has issues with its loading mechanism that causes it to continuously attempt to eject the disc even after ejecting the disc. A known and common problem, this unit will need to have some microswitches replaced in the near future. I picked this model because it comes an era when Sony was producing devices with my favorite design language. This device is able to record both analog and digital directly to Minidisc and allows for manually setting analog recording levels. Overall a really nice and functional device.

Minidisc, despite being so feature rich, ultimately failed for numerous reasons including high initial cost and the rise in digital formats and players like the iPod. In addition to this, commercially licensed music outside of Sony properties was far and few between. Even today you will not find many Minidiscs and those that you do find fetch a high price.

If you are interested in learning more or getting into the format I highly recommend taking a peek at https://www.minidisc.wiki/. This community run wiki provides a growing collection of articles related to the Minidisc format including where to buy devices and minidiscs, device features and even repair information.

Minidisc is not a format I expect to find a lot of prerecorded music for but I am enjoying transferring my vinyl records to minidisc or creating custom mixes. It’s true there are more modern ways to do the same thing, including just skipping the process entirely and creating playlists in Spotify, it is still an interesting departure from the norm and, most of all, is fun.

Like a “what’s on my computer” post, I thought it would be fun to go through a list of what is in the audio system in my home office. Back in 2020 I started down a journey of upgrading my audio equipment. This post details what I’m currently using and a little bit about why.

Amplification

Late in 2021 I upgraded the heart of the system from my Sony STR-DE425 to a Denon PMA-600ne. During the last half of 2021 the Sony started to show some signs of old age where it would randomly half enable surround sound mode or start the test tone but in just one channel. To fix it I’d have to unplug the receiver for a bit and then plug it in again. For this reason, I decided it was finally time to step up the amp I use in my audio chain. I decided on the Denon PMA-600ne integrated amp because it provided a number of analog and digital inputs, a phono pre-amp while providing basic tone controls. It has more than enough power for my room and reviews very well. What I immediately noticed about this amp was how much brighter it sounded than the Sony. I’ve always thought the Sony receiver had what I could only describe as a sterile sound but what I didn’t realize was how rolled off it was on the top end. With the Denon in place there is a lot more detail on the top end.

Sources

Despite having a nearly limitless selection of music available to me through Spotify I sometimes like to engage in the experience a bit differently depending on my mood. For this reason, feeding the Denon is a mix of devices that I can select from.

About mid 2021 I picked up a Sony CDP-C245 so that I could have a CD player again. This 5 disc changer was a cheap find on Craigslist that got me listening to my CD collection again, even though most of it is ripped to the computer anyway. What I like about the CD player is that it is dedicated to the task of playing CDs, has its own unique sound signature and has a nice display. Using the CD player is a bit like picking out a skin for WinAmp years ago or selecting what software you want to manage your music collection in today. Like software, the interface on each device is different and unique. It has physical buttons for all of the functions that the device offers. I like the classic Sony CD player display with the calendar grid, the symbols for which disc is selected along with the track and timer display. All told, using the CD player adds a bit of nuance to the experience that is just satisfying. The player, being old and used, has its issues. The tray sometimes freaks out and needs to reset itself by opening and closing. It also lacks digital output. I may replace it with a slightly newer model that has digital output but I’ll definitely stick with the classic Sony design.

Since the Denon is not a receiver it doesn’t have a built in radio tuner…but I do listen to the radio sometimes. To solve this I am using the tuner in the Sony and simply outputting it to the Denon. I wasn’t really expecting this to sound as good as it does but the Denon does a great job here.

My computer, which I run Spotify and Plexamp on, is connected to the Denon using a Schiit Modi 3+. Prior to the Modi 3+, I connected my computer to the Sony STR-DE425 using plain a 3.5mm to RCA cable. Oddly this resulted in a bit of hum some of the inputs on the receiver. To resolve this I picked up the Modi 3+ so that I can could add an excellent DAC with digital inputs to the Sony, remove the hum and just improve the overall sound quality. The Denon does have digital inputs but unlike the Modi 3+ it doesn’t have a USB input. Rather than adding optical out from the computer I opted to just stick with the Modi 3+ and feed it into an analog input on the Denon. Also connected to the Schiit is my Xbox One X’s optical output.

I have a few other gaming systems in my office in addition to the Xbox One X. These systems are all HDMI based and for these devices I use an HDMI switch that includes digital outputs. The HDMI switch allows me to output all of the systems to a single HDMI input on my monitor and then route digital audio from the switch into a digital input on the Denon.

The last item connected to the Denon is my Audio Technica LP120x turntable. This is a well known and excellent turntable that also reviews very well. Since the Denon has a built in phono preamp I opted to use that instead of the one built into the LP120x. I can’t really say if one sounds better than the other but both are more than acceptable and any remaining differences would certainly fall within the realm of personal preference.

Speakers

The Denon is currently connected to a set of Polk T-15 bookshelf speakers. These speakers are a bit unique in that they aren’t really designed for direct, on axis listening like other speakers. Instead, they were engineered from the point of view that a lot of users aren’t able to create a dedicated listening space and would instead position the speakers in a less than ideal arrangement. For this reason, the speakers offer the best sound when you are about 20 degrees above or below the tweeter. “Luckily for me”, my desk design doesn’t really allow for ideal speaker placement and the T-15s, while inexpensive, sound great to me in this room. I may upgrade in 2022 but before I do I plan to put some acoustic treatments in the room.

To round out the sound, and give it a lot more heft, I also have an old subwoofer connected to the subwoofer output on the Denon. This Yamaha subwoofer is from a home theater kit that I bought to give me a little something while living in an apartment. It is…not great but provides some much needed bass extension that the T-15s lack. This is arguably the weakest link in the audio chain today and is the first thing I am looking to upgrade in 2022.

Software

As I said, my computer (a Mac mini) is one of the sources connected to the Denon using the Schiit Modi 3+’s USB interface. Using this connection, the Modi 3+ appears as an output audio device on my computer providing a direct path from my music software to the DAC which is then converted and fed into the Denon as an analog signal. The software I am using includes:

  • Spotify (with subscription) provides streaming audio
  • Plexamp (requires Plex Pass) allows me to play my ripped CDs from my Mac but also on my iPhone
  • Plex for some of the items in my collection that work better on Plex, like OCRemix tracks and some game sound tracks.

To help route audio on my computer I use Rogue Amoeba’s SoundSource. This app allows me to route audio from the above apps directly to the Modi 3+ while keeping other apps like system audio or Zoom routed elsewhere.

Conclusion

Thank you for joining me today as I go through my audio system as it currently stands. Putting this together has been a lot of fun and listening to it even more so! When it comes to audio, what do you use? What is your favorite piece or what are you looking to improve first? Leave a comment!