Any aftermarkt speed sensitive volumn controllers?

[Z3M 10+ year member]

I have a 98 BMW M Roadster. The original HU, amp, and speakers have been replaced with an Alpine HU, PDX 4.150 and BA RC620 speakers. One thing I dearly miss from the original HU/amp was the speed sensitive volume. When I removed the BMW HU and amp I left the original speed sensitive wiring intact. Is their any aftermarket thingy that I can connect to my Alpine HU and PDX amp that will provide speed sensitive volume?

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[michaellane 5,000+ posts]

im guessing what it did was increase the volume the faster you go? to my knowledge no there is not. id join a bmw forum to see if any of them hoave found a way around your problem

 

[Z3M 10+ year member]

im guessing what it did was increase the volume the faster you go? to my knowledge no there is not. id join a bmw forum to see if any of them hoave found a way around your problem

Yes, the volume would decrease as you came to a stop and increase to your original setting when in sped up. I asked this in a couple of BMW forums. The HU was made by Alpine but the complete system HU, amp, and speakers were badged as a Harmon Kardon system. They said it was the amp that controlled the SSV as for an aftermarket option they suggested joining a car audio forum. Other than buying a HU with SSV built in I'm guess there is no after market add-on. That begs the question.....Is there any aftermarket HU that have speed sensitive volume control?

 

[infamous_e46 5,000+ posts]

Media - Adaptunes: Speed Based Volume Control - MP3Car.com

 

[infamous_e46 5,000+ posts]

Speed Sensitive Volume Control Kit