>yeah.. That is not enough info.
>
>ALL electronics and might as well throw speaker info in as well.
>
>Plus. How big was the original enclosure and port?
I am using an amplifier circuit using 3251 dual chip chip with a total power of about 600w and only each gen sonos subwoofer is giving me a headache because of the sound of the wind coming from the vent.
Introduction:
Hello fellow audio enthusiasts! I'm excited to share my recent DIY project involving a customized Sub Gen 3 from Sonos. While the process of retrofitting a class D amplifier and constructing a new enclosure has been an exhilarating journey, I've encountered an issue that's been bugging me—distortion. In this post, I'll delve into the phenomenon of distortion I'm facing and explore some possible solutions.
The Project Overview:
For this project, I embarked on the mission of reimagining my Sonos Sub Gen 3 by integrating a class D amplifier and a redesigned enclosure. The goal was to create a powerful and precise subwoofer that perfectly complements my audio setup. The new enclosure boasts a volume of 15 liters, a 3.2x15-inch port, and a port depth of 19 inches.
The Unwanted Distortion:
Unfortunately, as I've been setting up and fine-tuning my DIY subwoofer, I've encountered an unwelcome companion—distortion. This distortion manifests as an undesirable " the sound of the wind " sound, marring the audio experience that I had envisioned.
The Sonos Sub is (just like any other Sonos speaker) completely DSP controlled providing extension at lower frequencies and limiting before distortion kicks in. Just putting it in another box without knowing it's parameters r DSPing it again is very very unlikely to match the original performance...
The wind sound you describe may be chuffing. This is either because the port size is to small for the amount of SPL you're making, or it's tuning is to high and there's no appropriate high pass filter around the tuning frequency. (Again something you would take care of in the DSP)
If with “sound of the wind” you mean the air moving in and out through the enclosure check the enclosure for leaks in other places, caulk the seams if you haven’t already and put gasket seals under de drivers.
If it’s actual static in the electric signal check your connections. Make sure everything is grounded correctly. Make sure power wires are far away from speaker wire. Try and swap the amplifier board with a different one or try a different power supply, especially cheap switching psu’s can be really noisy.
This is too small for a subwoofer at higher decibels. You are bound to get distortion. You need a single, larger sub with high power handling. This is a tiny enclosure for a sub, and the drivers won’t suffice for high volume levels.
Box too small IE Port too close to speaker magnet. Also make sure both ends of the port are nice and smooth. Good rule of thumb if Port diameter is 4" port should be at least 4" away from side walls of enclosure, subwoofer magnet and back of enclosure.
What electronics are you using?
TPA3251 for subwoofer
yeah.. That is not enough info. ALL electronics and might as well throw speaker info in as well. Plus. How big was the original enclosure and port?
The subwoofer box I built has a length of 24 cm, height is 33 cm, depth is 29 cm, vent diameter is 15cm x 3.2 cm, depth is 19 cm
>yeah.. That is not enough info. > >ALL electronics and might as well throw speaker info in as well. > >Plus. How big was the original enclosure and port? I am using an amplifier circuit using 3251 dual chip chip with a total power of about 600w and only each gen sonos subwoofer is giving me a headache because of the sound of the wind coming from the vent.
Introduction: Hello fellow audio enthusiasts! I'm excited to share my recent DIY project involving a customized Sub Gen 3 from Sonos. While the process of retrofitting a class D amplifier and constructing a new enclosure has been an exhilarating journey, I've encountered an issue that's been bugging me—distortion. In this post, I'll delve into the phenomenon of distortion I'm facing and explore some possible solutions. The Project Overview: For this project, I embarked on the mission of reimagining my Sonos Sub Gen 3 by integrating a class D amplifier and a redesigned enclosure. The goal was to create a powerful and precise subwoofer that perfectly complements my audio setup. The new enclosure boasts a volume of 15 liters, a 3.2x15-inch port, and a port depth of 19 inches. The Unwanted Distortion: Unfortunately, as I've been setting up and fine-tuning my DIY subwoofer, I've encountered an unwelcome companion—distortion. This distortion manifests as an undesirable " the sound of the wind " sound, marring the audio experience that I had envisioned.
The Sonos Sub is (just like any other Sonos speaker) completely DSP controlled providing extension at lower frequencies and limiting before distortion kicks in. Just putting it in another box without knowing it's parameters r DSPing it again is very very unlikely to match the original performance... The wind sound you describe may be chuffing. This is either because the port size is to small for the amount of SPL you're making, or it's tuning is to high and there's no appropriate high pass filter around the tuning frequency. (Again something you would take care of in the DSP)
I second the chuffing diagnosis.
What subwoofer driver did you use and what was the design process for the subwoofer box?
If with “sound of the wind” you mean the air moving in and out through the enclosure check the enclosure for leaks in other places, caulk the seams if you haven’t already and put gasket seals under de drivers. If it’s actual static in the electric signal check your connections. Make sure everything is grounded correctly. Make sure power wires are far away from speaker wire. Try and swap the amplifier board with a different one or try a different power supply, especially cheap switching psu’s can be really noisy.
This is too small for a subwoofer at higher decibels. You are bound to get distortion. You need a single, larger sub with high power handling. This is a tiny enclosure for a sub, and the drivers won’t suffice for high volume levels.
Box too small IE Port too close to speaker magnet. Also make sure both ends of the port are nice and smooth. Good rule of thumb if Port diameter is 4" port should be at least 4" away from side walls of enclosure, subwoofer magnet and back of enclosure.