'bass blocker' to protect FR driver? - diyAudio
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Old 2nd May 2011, 03:30 PM   #1
60ndown is offline 60ndown  United States
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Default 'bass blocker' to protect FR driver?

if 'audiofools' might have access to the volume dial, is it 'sacrilegious' to instal something to protect a FR driver from too much low frequency signal/and or volume and risk coloring / affecting the whole sound ?

or can i solder something (cap/resistor/iductor?) on the +ve lead to protect the driver?

what value/s?

Last edited by 60ndown; 2nd May 2011 at 03:32 PM.
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Old 2nd May 2011, 03:55 PM   #2
Did it Himself
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You would put a capacitor in series, but it's not really an audiophile solution unless you run it a fair bit below resonance. Then it's not going to do a lot anyway, so swings and roundabouts...
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Old 2nd May 2011, 04:50 PM   #3
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How about an inductor in parallel?

:)ensen.
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Old 2nd May 2011, 06:20 PM   #4
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Quote:
Originally Posted by purplepeople View Post
How about an inductor in parallel?

ensen.
No!

A decent inductor will have a DC resistance of less than 1ohm.
Putting that across an amplifier will cook most. It'll be very quiet through the speaker so you'll turn it up and then the smoke comes out.
Not good.


Use a PLLXO.
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Old 2nd May 2011, 07:17 PM   #5
60ndown is offline 60ndown  United States
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i love the www, i learn so much and save so much time and equipment.

thank you
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Old 2nd May 2011, 08:05 PM   #6
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Oops. I traded brevity for clarity and made the suggestion to avoid issues with capacitors in series.

What I was thinking something like an inverse BSC circuit. Normally the driver in series with an inductor and resistor that are paralleled with each other. Instead the inductor and resistor in series then paralleled with the driver.

:)ensen.
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Old 2nd May 2011, 10:35 PM   #7
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Same effect as Chris said just not as severe. Makes little to no difference to sound coming from the speaker as it's just a parallel element.
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Old 3rd May 2011, 11:42 AM   #8
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How about a fuse?
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Old 3rd May 2011, 12:37 PM   #9
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put a line-level passive high pass in front of your amp, it'll cost you from $3
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Old 3rd May 2011, 01:35 PM   #10
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they still make f-mods?

I remember seeing that they roll at 6db even though they advertise 12db.

Norman
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