Car audio modification is a trap, be careful...
I just bought the car in July 2017
The car was bought in July 2017 At that time, I was hesitating between Milan and 280 Deluxe. I considered Milan’s audio and sports seats, but there was almost no discount in Milan. The 280 Deluxe had a discount of 30,000, so the price difference was about 50,000. Finally, I gave myself a reason to convince myself that 280 Deluxe is the best choice. It’s red, so I ordered luxury! ?But after driving it for a few months, I always felt that it was a pity that there was no 900-watt Harman Kardon, so I decided to start changing the speakers. At that time, I spent nearly 5,000 to buy eight original Harman speakers, because I was afraid that other stores would not get them. I had this model and went to a 4S store to replace it. The labor cost was 1,500. After the replacement, I didn't feel a significant improvement. Especially when the sound was not loud, it felt that the sound effect was not as good as the original 280. I later went to several audio modification shops. You know, modifying the audio is not as simple as directly replacing the speakers.
Original 280 luxury door panel mid-bass 20w
Harman is 50w
The speaker has been changed, but the original car host has not been changed, Harman 50w, original 20w, so the original host cannot push the Harman speakers, and the sound is not powerful enough, so I started looking for audio modification cases on the Internet. After searching for a long time, I found that the Ma Yun family said that they had modified this model and used their DSP amplifier. I didn’t understand it at first, so I ordered it directly. The seller said that this DSP amplifier also has the output of a subwoofer, so I also ordered a subwoofer because I found that there was a place for installing speakers on the rear platform, but it was blocked with a plastic plate. , it should be no problem to install the subwoofer here
The eight-inch subwoofer
There was only a little difference before it could be installed. Later, I used pliers to break it off a few times and it was done.
I dug a hole and got a 6*9 speaker cover, the position was just right
After installing it, I found that there was a sound fault light
Go to the 4S store I tried to eliminate the fault code, but the result was that it could not be eliminated. Moreover, this fault would affect the reversing radar. The sound would not automatically become smaller when the radar was started, so I had to find a way to eliminate it. Finally, I used a very simple method to solve it, which is to install the original car host computer. When taking the audio signal at the output end, just connect the four speakers directly. Because it is recognized by the computer, it only needs to make the host feel that there are speakers running, so it is done.
In order not to affect the sound quality in the car, the four tweeters were wrapped with sound insulation cotton
After everything was installed, it really felt improved a lot, so I immersed myself in the car and enjoyed it. Playing wonderful music. ?But slowly I discovered a problem, that is, the door panels and trunk buzzed when the sound was turned up. The owner of the modification shop said that sound insulation was needed, and the cabinet with sound insulation door panels would become better and the bass would be fuller. The subwoofer on the rear platform can also slow down the vibration. Well, it was done for the sake of sound quality.
After doing it, the sound insulation effect is indeed much better, but people are always dissatisfied. The boss said that the DSP amplifier does not have a separate DSP and amplifier. The matching effect is good, and the bass effect of Harman is not as good as that of Dynaudio. Okay, let's change it together. So I installed a Dynaudio 272 active two-way frequency, two Genesis G4 amplifiers, and a Musway DSP.
Dynaudio 272 door panel mid-bass
Sure enough, the effect has improved to a big level? But after listening to it for a while, I felt that the subwoofer was not good, so I started to study the subwoofer again. The Hertz eight-inch gun was used at the beginning, and now it is replaced with Jinlang's P20F. It has indeed improved a lot, but the rear platform is too thin to control it, so I made two layers of shock absorbers and sound-absorbing cotton, and finally got it done.
Only a little bit on both sides, just enough to place the eight-inch subwoofer
Upper and lower double-layer Russian STP shock absorbers
Use the trunk as a bass box , so the large holes on both sides were sealed with soundproof cotton
Replaced lithium battery
The battery is very important for the car audio system. The rated voltage of lithium battery is higher than that of lead-acid battery. The battery is 0.8v high, and the charging and discharging speed of lithium batteries is faster and more stable. For the sound system, the sound is cleaner and the bass dive is better (if you like car audio, you can search on Baidu about the importance of lithium batteries for the sound system) and lithium batteries It is 17 kilograms lighter than the original lead-acid battery, which is enough to offset the added weight of sound insulation and amplifier.
The current 280 luxury
The total cost of modifying the audio is less than 40,000, but the back door is still Harman, the front door has not yet been equipped with active three-way, and the best wires are still used. Ordinary, car audio is a pit, there is really no end...
QV purchased at the end of June 2019
Bought when the country was changed from National Five to National Six in 2019 The four-leaf clover. Nowadays, the four-leaf clover is used for running on the track and attending car enthusiast gatherings. The pace is still 280 because the four-leaf clover is still a little lower. ?Since there are both modified and original products, I personally simply compared the effects of the modified speakers and the original Harman speakers. The gap is still quite big. Although Harman has 900 watts, it does not have a real subwoofer. The sound without a subwoofer is It's incomplete, and it feels like it doesn't have enough power. Of course, Harman's option costs about 10,000, and my modified speaker also cost about 40,000, so there is a slight difference. ?Occasionally turning the music volume up while driving will bring about a strong bass pushing back feeling. This feeling is different from the acceleration feeling of a car. Of course, I will occasionally travel, listen to wonderful music, and drive my beloved Giulia. If you like car audio, you will fall in love with this feeling. ? (By the way, compare the height of the site)
17 Four-leaf Clover
F1 Limited Edition
Alfa Romeo Tianjin Brand Day
Maybe The manufacturer found a chassis permeability problem, so the 19th Giulia is 2cm taller than the 17th model, and both the 2.0T and 2.9T are 2cm taller. In other words, the 17th model has more pure track genes, and the 19th model is more suitable for China's national conditions. ?Two identical cars, both Alfa Romeo Giulia. Will anyone say that I am an Alfa fan? Well, I am indeed an Alfa Romeo fan. I really like this brand and this car. I also hope that Alfa can Develop better in China. Finally, I would like to advise all car enthusiasts to avoid comparison when pursuing car audio. The one that suits you is the best!
I hope the moderators can help refine it so that more Alpha fans who like car audio like me can find a suitable audio modification solution for them [Baoquan][Baoquan][Baoquan]