Hooking up the boom bonnet to the VU7A speakers

Post Reply
User avatar
mad_ady
Posts: 6681
Joined: Wed Jul 15, 2015 5:00 pm
languages_spoken: english
ODROIDs: XU4, C1+, C2, N1, H2, N2
Location: Bucharest, Romania
Has thanked: 194 times
Been thanked: 148 times
Contact:

Hooking up the boom bonnet to the VU7A speakers

Unread post by mad_ady » Tue Jun 04, 2019 7:11 pm

I'd like to use the VU7A speakers with the boom bonnet, but the boom bonnet speakers have two 2pin connectors while the vu7a speakers have a larger 4 pin connector. I could use jumper wires to make an adapter - question is - is it ok electrically?
Should I hook up the 4 wires to a 3.5" audio jack instead? That would be more versatile... Would I get less power if I went the 3.5" way?
Thanks!

User avatar
odroid
Site Admin
Posts: 32368
Joined: Fri Feb 22, 2013 11:14 pm
languages_spoken: English
ODROIDs: ODROID
Has thanked: 147 times
Been thanked: 325 times
Contact:

Re: Hooking up the boom bonnet to the VU7A speakers

Unread post by odroid » Wed Jun 05, 2019 9:29 am

It should be fine electrically.

Look at the rear side of the VU7A. The speaker connector shows R-,R+.L+,L-.
Image
These users thanked the author odroid for the post:
mad_ady (Wed Jun 05, 2019 1:14 pm)

User avatar
mad_ady
Posts: 6681
Joined: Wed Jul 15, 2015 5:00 pm
languages_spoken: english
ODROIDs: XU4, C1+, C2, N1, H2, N2
Location: Bucharest, Romania
Has thanked: 194 times
Been thanked: 148 times
Contact:

Re: Hooking up the boom bonnet to the VU7A speakers

Unread post by mad_ady » Wed Jun 05, 2019 1:35 pm

Thanks! What if I do something like here: https://forum.allaboutcircuits.com/thre ... io.109590/ and connect L- and R- to a headphone jack ground (and the + to the other connectors) - they would work as a regular 3.5" stereo device, right? In terms of power output - would they be quieter on the vu7's audio jack and the boom bonnet's compared to the dedicated audio pins? Meaning the audio jack is designed only for headphones and has an attenuator built-in?

The advantage of going the headphone jack way is I could use them on my H2 too (it uses HDMI to DVI so no audio).

I guess @phaseshifter might know more about this.

Thanks!

User avatar
odroid
Site Admin
Posts: 32368
Joined: Fri Feb 22, 2013 11:14 pm
languages_spoken: English
ODROIDs: ODROID
Has thanked: 147 times
Been thanked: 325 times
Contact:

Re: Hooking up the boom bonnet to the VU7A speakers

Unread post by odroid » Wed Jun 05, 2019 1:50 pm

Relatively higher powered D-Class PWM speaker driving circuit might break your headphone actuators or other audio amplifiers.
Line-out driving circuit in the N2 is very different from a generic D-class speaker amplifier.

Post Reply

Return to “I2S Devices (HiFi Shield DAC and Stereo Boom Bonnet Kit)”

Who is online

Users browsing this forum: No registered users and 1 guest