Tone Control or Bass Boost?

[StodgyWaif]

Hello Everyone.

I'm new to the forum and new to diy audio in general.

This year I decided to build a portable stereo "boom box".

This is the amp and speakers I used:
Wondom AA-AC11162 2x50W 4-8 Ohm Class D Audio Amplifier Board BT4.0
Dayton Audio DC160S-4 6-1/2" Classic Shielded Woofer 4 Ohm
Dayton Audio ND20FB-4 Rear-Mount 3/4" Soft Dome Neodymium Tweeter

The crossover is a 2nd Order Linkwitz-Riley at 3600Hz:
Dayton Audio DMPC-5.6 5.6uF 250V Polypropylene Capacitor
Dayton Audio 0.35mH 20 AWG Air Core Inductor Crossover Coil


The speaker has plenty of output and I'm really pleased with it overall.

However, I really want to boost the bass.

I used WinAmp to cut all frequencies above 70Hz as much as the EQ will allow and it sounds how I want it to.

I would like to make the speaker/amp combo replicate this result.


So my question is do I need to rebuild my crossovers differently?

Also, I read somewhere that someone had cut the treble at the volume pot to create bass boost.

I really have no idea where to even begin to correct this.

Thanks for any advice.

 

[Charles Darwin]

May be a QUAD-like tilt control would suit your purpose.

This might or might not help:Implement an audio-frequency tilt-equalizer filter | EDN

 

[adason]

or simple variable loudness pot

 

[Keruskerfuerst]

You can make the tweeter more quieter.

 

[StodgyWaif]

Thanks for the quick replies.

The tweeter is not actually that loud in this setup. Really, I'm just lacking significant bass from the woofer. As stated in the original post, a low pass shelf EQ corrects the issue.

After some searching based on variable loudness pot, I think this might be what I'm looking for:
http://www.diyaudio.com/forums/analog-line-level/202413-loudness-stage.html#post3118059

Of course the idea creates more questions. The schematic shows 4 connections to the circuit right? I understand the ground but not the rest.
So this could be implemented inline with my current volume pot? On the output side?
Also, I would need 2 of these for stereo?

I apologize for my ignorance in this field. I've not had much experience with schematics, and building circuitry.

EDIT:
I see further in the post I linked they are answering the additional questions I posted.
I will likely try to integrate this circuit in my design and get back to you all with the results.


Also, any additional ideas or advice is certainly welcome.

 

[Charles Darwin]

A typical loudness circuit boosts bass and treble so from your first post I gathered that you want to keep treble low which made me think of the tilt control instead.

 

[StodgyWaif]

A typical loudness circuit boosts bass and treble so from your first post I gathered that you want to keep treble low which made me think of the tilt control instead.

Thanks for replying.

At first I had evenly cut all the frequencies above 70Hz using WinAmp's 10 band EQ and achieved good results.

However, after finding the post on the variable loudness pot, I recreated the EQ curve shown and it improved the overall sound even more.

Also, I did take a brief look at the link you provided. I'll give it a read when I have some more time.

 

[scottjoplin]

Hi, you could use this to give low frequency boost Sub-Woofer Controller also look into baffle step correction

 

[StodgyWaif]

Hi, you could use this to give low frequency boost Sub-Woofer Controller also look into baffle step correction

Interesting piece of equipment. Thanks for the input.