Speaker roloff correction

[beamnet]

Hi there.

I am still developing my audio set, which yet consists out of a 70w PP tube amp, a cd304 MK2 and some really nasty second hand, ultra eighties monitor speakers by philips.

I am unashamed to admit i listen to a lot of mp3's too

I use winamp.

Looking at the equalizer, i just have to admit that about 4 dB @60hz up sounds great.

I can kinda sooth my conciousness, knowing that in my small room and with these ugly speakers, bass reponse will be about that much lower at 60hZ.

I what extend can you lower your systems response by boosting the lows before the power amp?

If you sense the output watts, you could probably make it dependant on volume settings...

Bas

[mike.e]

I what extend can you lower your systems response by boosting the lows before the power amp?

Yes,while increasing distortion greatly.

If you sense the output watts, you could probably make it dependant on volume settings...

Some commercial manufacturers do this,but then at high levels the circuit causes your frequency response to be NON LINEAR.

see linkwitzlab.com

[lndm]

If you want to go higher than 4dB, you could always shelve the mids and highs. Using the EQ though, with all those narrowband filters, may give you a lumpy response. You might want a simple passive shelving filter just before your amp.

[beamnet]

That was what i meant.

Why would i increase distortion? Only if i boost the lows too much wouldn't i?

Bas

[lndm]

You could try cranking the bass till you notice distortion then back it off at least 6dB. IMO this should be satisfactory. More would be better but if it sounds good, leave it. Try with different music.

The more you shelve, the higher your noise but for what you want to do (how much you want to shelve), I wouldn't even worry about that.

[beamnet]

I might not do this, but it was just hypothetically. because lots of people make huge speaker enclosures to get deep bass. This might save some room...