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Bose Wave 1 - AWRC-1G - Treble & Bass Adjustments - Too Much Bass

cdubyah

Jan 11, 2024
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Hello,

I just bought a used Bose AWRC-1G. Is there any adjustment for the bass and treble for this radio? There are no visable adjustment buttons. Please don’t point me to the user manual because it is bereft of any information on bass or treble, let alone how to adjust it. Anyone have a link to a video on how to make this adjustment? Right now I am suffering from to much bottom end. #notallaboutthatbass

Thank you!
 

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kellys_eye

Jun 25, 2010
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That Bose unit was sold with the specific task of 'boosting the bass' due to the unique design of the speaker and horn arrangement.
 

crutschow

May 7, 2021
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Likely no adjustment anywhere.
The only thing I can think of is to put a large non-polarized capacitor (for example, two electrolytics back-to-back) in series with the speaker leads.
Start with about 500µF and go down from there to reduce the bass.
 

crutschow

May 7, 2021
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The capacitors can also be non-polarized speaker crossover capacitors such as these from Parts Express:
1705071523532.png
 

Audioguru

Sep 24, 2016
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The small speakers in the long "waveguide" enclosure make a resonant "one-note-bass" that some people like to hear.
I like to feel and hear all the low bass notes.
 

Delta Prime

Jul 29, 2020
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Right now I am suffering from to much bottom end. #notallaboutthatbass
It's a wave guide, kick it in the in the gluteus maximus. It's a mechanical tube if you put a dent in it it will no longer resonate at a particular frequency (attenuate) the bottom end... no more suffering.
And you're wrong!
It's all about that bass...
:cool:
 

crutschow

May 7, 2021
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Okay, DP's post gives me an alternate idea.
Instead of trying to change the tube, which I think is plastic, just put cotton balls in it to damp the bass.
Adjust number of cotton balls to taste.
 

Delta Prime

Jul 29, 2020
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Adjust number of cotton balls to taste
Taste kind of nutty?
That won't work .Damping Factor is the ratio of nominal loudspeaker impedance (the impedance the loudspeaker is rated at) to total output impedance of the system driving the loudspeaker, including the amplifier and cables.
One has to change the geometry of the resonant cavity. Changing the volume of air inside the cavity will not prohibit resonance.
You're out of luck until you've gone duck. What say you?
Audio guru 2.
 
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Audioguru

Sep 24, 2016
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Maybe Bose feeds the speaker with a series impedance causing it to resonate and sound "boomy".
Maybe their little speakers have a peak at a mid-high frequency so they reduce the treble which makes the bass resonance too loud.
 

crutschow

May 7, 2021
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Changing the volume of air inside the cavity will not prohibit resonance.
You're out of luck until you've gone duck. What say you?
The intent of the cotton is not to change the resonant frequency, which could eliminate desired bass frequencies, but to dampen (muffle, attenuate) the sound by the friction of the sound going through the cotton, just like cotton does in your ears.
You may have to pack it in there somewhat densely to get the bass reduced to the desired level.

What is going "duck"?
 

crutschow

May 7, 2021
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Maybe Bose feeds the speaker with a series impedance causing it to resonate and sound "boomy".
Maybe their little speakers have a peak at a mid-high frequency so they reduce the treble which makes the bass resonance too loud.
And how is that pertinent to solving the problem?
 

Audioguru

Sep 24, 2016
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I have never purchased a little Bose stereo radio/CD player because of its poor frequency response.
 

Delta Prime

Jul 29, 2020
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What is going "duck"?
That was my attempt to entice audioguru to make an encore appearance.
I'm going to frame this thread.
No one's going to believe me...if I just tell them that I was in the same thread with crutschow & audioguru.
I'm going to buy a lottery ticket now!
Today's my lucky day.
Screenshot_20240113_005944.jpg
 
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