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SPL when designing

I am in the process of designing some speaker cabinets with Vituix Cad.  Got a question.  The main speakers will be driven by a flea watt 6 watt amp.  The sub by a Hypex 250 watt amp.  Should I try to match the efficiency of the drivers even though the subwoofer and mains will be driven by separate amps.  If I want the preamp to be the main volume control (I hate setting the sub all the time), would it help at all?

128x128jgoldrick

Showing 2 responses by erik_squires

erik_squires
15,801 posts
 

OP:

Two more bits of advice.  Consider using a miniDSP digital crossover to set your levels and crossovers, at least to start with.  It will be inexpensive and highly flexible.

Next, take your speaker design questions over to DIYaudio were the speaker makers hang out.

erik_squires
15,801 posts
 

There are multiple problems possible here. Driver as well as amplifier gain mismatches, not to mention the difficulty in finding drivers you really like which happen to match in output, as well as equalization.  Plus, whatever you do on paper you'll probably want to alter somewhat. 

Amplifiers do not all have the same gain. There’s a convention for 23 dBV but it’s not a legal requirement and experimental boutique 6W amps may not follow that at all.

In your case, you may be best served by a very efficient tweeter, which maximizes the output from the 6W amp, and appropriate level controls before the amps.

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