Is there any way to boost the Vout to 4V?

DJNUBZ · 1st October 2010, 04:31 PM

I am considering using this piece in a car audio environment. My problem is that the car audio environment is very noisy so any peice I use has to be able to put out a decent amount of voltage. Is there any way to mod the miniDSP to increase it's Vout of .9V to 4V? I would possibly even be happy with 2V output but the .9V is simply way to low.

minidsp · 2nd October 2010, 05:12 AM

Hello,

Using miniDSP balanced (2Vrms output) or miniDSP kit + balanced driver would be I guess the way to go.

In a car environment, pseudo balanced (forward referencing) would actually work better for noise rejection at the input. miniDSP balanced might be a better choice for that reason.

Hoping this makes sense.

DJNUBZ · 2nd October 2010, 06:51 AM

I am not as worried about noise on the input. I am worried about the low Vout allowing noise to become a factor before the amplifier.

Can the balanced version be used in an unbalanced setup and still put out 2V?

DJNUBZ · 2nd October 2010, 08:04 PM

I should also add that most car audio amplifiers are designed to accept 2-8V at the input to make full power.

DJNUBZ · 7th October 2010, 02:38 PM

There is discussion on these piece going on here.

miniDSP -who has used it. how did it work for you

jaistanley · 20th November 2010, 09:13 PM

In the balanced minidsp board's documentation there is a mention of running single ended connections. I beleive it shows a diagram of bridging two of the posts with a piece of wire...

I've been looking at using a balanced version of the board as it will allow me to just run passive potentiometers to power amps, no need for pre amp after the board.

Have a look at that.

Jai

stratus46 · 21st November 2010, 12:59 AM

Quote:

Originally Posted by DJNUBZ

I am considering using this piece in a car audio environment. My problem is that the car audio environment is very noisy so any peice I use has to be able to put out a decent amount of voltage. Is there any way to mod the miniDSP to increase it's Vout of .9V to 4V? I would possibly even be happy with 2V output but the .9V is simply way to low.

Is that .9V rms or p-p? 0.9 V rms (2.5Vp-p) should be workable.

G²

1st October 2010, 04:31 PM	#1
DJNUBZ diyAudio Member Join Date: May 2003 Location: Chicago	Is there any way to boost the Vout to 4V? I am considering using this piece in a car audio environment. My problem is that the car audio environment is very noisy so any peice I use has to be able to put out a decent amount of voltage. Is there any way to mod the miniDSP to increase it's Vout of .9V to 4V? I would possibly even be happy with 2V output but the .9V is simply way to low.

2nd October 2010, 05:12 AM	#2
minidsp diyAudio Member Join Date: Dec 2009	Hello, Using miniDSP balanced (2Vrms output) or miniDSP kit + balanced driver would be I guess the way to go. In a car environment, pseudo balanced (forward referencing) would actually work better for noise rejection at the input. miniDSP balanced might be a better choice for that reason. Hoping this makes sense. __________________ www.minidsp.com - Low cost & modular audio DSP kits for DIYers - Follow our tweets @ minidsp

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2nd October 2010, 06:51 AM	#3
DJNUBZ diyAudio Member Join Date: May 2003 Location: Chicago	I am not as worried about noise on the input. I am worried about the low Vout allowing noise to become a factor before the amplifier. Can the balanced version be used in an unbalanced setup and still put out 2V?

2nd October 2010, 08:04 PM	#4
DJNUBZ diyAudio Member Join Date: May 2003 Location: Chicago	I should also add that most car audio amplifiers are designed to accept 2-8V at the input to make full power.

7th October 2010, 02:38 PM	#5
DJNUBZ diyAudio Member Join Date: May 2003 Location: Chicago	There is discussion on these piece going on here. miniDSP -who has used it. how did it work for you

20th November 2010, 09:13 PM	#6
jaistanley diyAudio Member Join Date: Nov 2005 Location: Coventry	In the balanced minidsp board's documentation there is a mention of running single ended connections. I beleive it shows a diagram of bridging two of the posts with a piece of wire... I've been looking at using a balanced version of the board as it will allow me to just run passive potentiometers to power amps, no need for pre amp after the board. Have a look at that. Jai