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Old 21st June 2014, 01:18 PM   #1
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Default minidsp - linkwitz transform

afternoon,

ignoring driver xmax and amplifier power, how many DB's 'boost' can the Linkwitz transform on a minidsp produce before distortion or clipping start to take place?

thanks for your help.
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Old 21st June 2014, 03:24 PM   #2
TBTL is offline TBTL  Netherlands
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0 dB if you the signal level at the input is maximal. Before you can boost, you have to attenuate the signal (tab 'input gain').

Last edited by TBTL; 21st June 2014 at 03:46 PM.
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Old 21st June 2014, 04:37 PM   #3
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Quote:
Originally Posted by TBTL View Post
0 dB if you the signal level at the input is maximal. Before you can boost, you have to attenuate the signal (tab 'input gain').
so i need to reduce the input signal by say -10db in order to get the +10db linkwitz slope?
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Old 21st June 2014, 04:48 PM   #4
Davey is offline Davey  United States
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Quote:
Originally Posted by gafhenderson View Post
so i need to reduce the input signal by say -10db in order to get the +10db linkwitz slope?
You'd have to verify your input wouldn't exceed -10db relative to the miniDSP maximum input.

However, a Linkwitz Transform can easily be programmed to cut (the upper range) vice boosting in the lower range with a miniDSP.

There is no defined answer to you original query. It all depends upon your input signal level and how the gain structure in the rest of your system looks. It's more complicated than it might seem.

Cheers,

Dave.
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Old 21st June 2014, 07:10 PM   #5
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Which MiniDSP do you have? 2x4 or 2x8?
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Old 21st June 2014, 11:35 PM   #6
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Originally Posted by rich31td View Post
Which MiniDSP do you have? 2x4 or 2x8?
2x4
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Old 22nd June 2014, 12:06 PM   #7
OllBoll is offline OllBoll  Sweden
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As the others are saying, with a MiniDSP you linkwitz transform won't you don't boost the signal in the bass but rather attenuate it outside of the bass. In practice you can think of it that you trade overall dynamic range for better low frequency extension.

In most systems as long as your gain structure is good then this price is "free" as the maximum headroom of the MiniDSP + amp is above what the speaker actually can handle so it isn't really a problem, just something to be aware of.
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