Hardwire Marshall Stanmore bluetooth speaker?

[jakg104]

Hi folks,
I'm a big fan of the Marshall Bluetooth speakers, both their looks as well as their signature sound and would love to hardwire a Stanmore to my 77 911.

Unfortunately the Stanmore runs on 110V, so I'd need to hardwire it directly to the battery.

Has anyone hardwired one to these to their 911's? I'm thinking in the rear seat area, since I have deleted the rear seats.

Thanks!
Jake

[MTN930]

Seems like you'd need to do more than wire into the battery. You'd need a car power inverter to convert DC to AC and to up the volts from 12vDC to 110vAC?

Done this in many cars over the years. Easy to do. Just make sure the power inverter has good ventilation as it can get warm.

Good luck.

[jakg104]

Originally Posted by MTN930

Seems like you'd need to do more than wire into the battery. You'd need a car power inverter to convert DC to AC and to up the volts from 12vDC to 110vAC?

Done this in many cars over the years. Easy to do. Just make sure the power inverter has good ventilation as it can get warm.

Good luck.

Thanks! What I would prefer is to see if i can get 12v to the Marshall unit directly; ie; splice into the cable past the factory power converter. I'll do some research on what its input voltage is...

[MTN930]

I really like these little Marshall amps/speakers. Perhaps you've already found this schematic in a DIY repair forum?

https://www.elektroda.com/rtvforum/topic3430940.html

No promises it'll have what you're after. If you get it figured out post the solution back here on the forum.

[jakg104]

Originally Posted by MTN930

I really like these little Marshall amps/speakers. Perhaps you've already found this schematic in a DIY repair forum?

https://www.elektroda.com/rtvforum/topic3430940.html

No promises it'll have what you're after. If you get it figured out post the solution back here on the forum.

Nice find! Let me understand the schematic a bit better. At first glance, looks like its a 110V input into the device, I had wrongly assumed there was an external AC-DC converter.. I'll come back on this one, thank you!

[darrin]

yep, unfortunately, it has a direct 120v 60w input -- I have a feeling you'll be chasing noise from the inverter if you chose to go 12v dc>120v ac in your car --

[johnjohnsongc]

This is such a good idea, I was actually thinking of using one of the smaller battery powered ones and mounting it on the dash like a stopwatch

[shoooo32]

There are Marshall Stanmore available on eBay for parts/not working that you could repower with a small 12v bluetooth amp.

Would likely be cheaper than buying new and using an inverter and should retain the same sound as the speakers and case design are unchanged.