Mini DSP output voltage

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   After some frustrating testing with my new portable speaker project I'm coming to the conclusion that I need to find a way to boost the output voltage of my mini DSP before the signal reaches my sure amp board. Has anybody got any suggestions for this? 
At the moment I have a 36v ebike battery powering the amp and a buck converter stepping down to 5v to power the mini DSP and Bluetooth board so something that's happy at either of those voltages would be excellent! Also the smaller the form factor the better, cheers!

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Teadub Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 13 April 2019 Location: Highlamds Status: Offline Points: 29	Post Options Post Reply Quote Teadub Report Post Thanks(0) Quote Reply Topic: Mini DSP output voltage Posted: 01 July 2022 at 1:42am
	After some frustrating testing with my new portable speaker project I'm coming to the conclusion that I need to find a way to boost the output voltage of my mini DSP before the signal reaches my sure amp board. Has anybody got any suggestions for this? At the moment I have a 36v ebike battery powering the amp and a buck converter stepping down to 5v to power the mini DSP and Bluetooth board so something that's happy at either of those voltages would be excellent! Also the smaller the form factor the better, cheers!

Conanski Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 26 January 2006 Location: Ottawa, Canada Status: Offline Points: 2545	Post Options Post Reply Quote Conanski Report Post Thanks(0) Quote Reply Posted: 01 July 2022 at 3:13am
	What is the input sensitivity of the amp board? If it's consumer line level the DSP should drive it just fine.

Teadub Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 13 April 2019 Location: Highlamds Status: Offline Points: 29	Post Options Post Reply Quote Teadub Report Post Thanks(0) Quote Reply Posted: 01 July 2022 at 4:06am
	2.4v apparently

fatfreddiescat Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 15 October 2010 Location: N.E.Wales Status: Offline Points: 1083	Post Options Post Reply Quote fatfreddiescat Report Post Thanks(0) Quote Reply Posted: 01 July 2022 at 7:30am
	Gain on the amp board may be adjustable, 2.4V is a very high input for a low output amp. Often there is a resistor in the feedback loop that can be changed to adjust the gain.

bitSmasher Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 23 June 2012 Location: Melbourne Status: Offline Points: 2295	Post Options Post Reply Quote bitSmasher Report Post Thanks(0) Quote Reply Posted: 01 July 2022 at 7:59am
	Which Sure amp is it? I recall some had jumpers to change sensitivity - or as above you might be able to switch out a resistor if you're brave and capable.
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