I have a cabinet setup in a hifi sort of way. 8ohm woofer in series with an 8ohm celestion driver. There is a nonpolarized 100uF cap between to high pass the celestion driver @200Hz roughly.
Using my 16ohm tap on my tube amp.....am I going to have a load mismatch?
The cap should be a DC block and for AC anything below 200Hz will "see" a high resistance...
Bad idea or acceptable?
Thanks for any help!!!!
Loading.....DC resistance?
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Stevem
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Use the 8 ohm tap on your amp.
The bad idea part is the big 12 Db dip in frequency responce you will have around that 200 hz point, flat your responce will not be to speak like Yoda!
The bad idea part is the big 12 Db dip in frequency responce you will have around that 200 hz point, flat your responce will not be to speak like Yoda!
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
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Malcolm Irving
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Re: Loading.....DC resistance?
Maybe I have misunderstood, but if your two 8 ohm speakers are in series, then the cap must be in series too. That would block low frequencies for both speakers.
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Malcolm Irving
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Re: Loading.....DC resistance?
I think the speaker circuits should be wired in parallel, like this:
Tip of jack socket to +ve terminal of 8 ohm woofer,
+ve terminal of woofer via series cap to +ve of tweeter,
-ve terminal of tweeter to –ve terminal of woofer,
-ve terminal of woofer to sleeve of jack socket.
At low frequencies you have the 8 ohm woofer more or less working alone.
At high frequencies you have the tweeter in parallel, but the speaker impedances are higher at high frequencies, so it’s still good to use the 8 ohm tap.
Tip of jack socket to +ve terminal of 8 ohm woofer,
+ve terminal of woofer via series cap to +ve of tweeter,
-ve terminal of tweeter to –ve terminal of woofer,
-ve terminal of woofer to sleeve of jack socket.
At low frequencies you have the 8 ohm woofer more or less working alone.
At high frequencies you have the tweeter in parallel, but the speaker impedances are higher at high frequencies, so it’s still good to use the 8 ohm tap.
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David Root
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Re: Loading.....DC resistance?
A simple 2-way crossover might work better.
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Xander8280
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Re: Loading.....DC resistance?
thanks guys.
Going to remove the capacitor all together. I may just add an L Pad or two with bleed caps. The main goal was to have a full range cabinet that can handle a lot of low end. Celestion g12's bark with the volume I may drive them in...I have tested my cabinets without highpassing and it has scared me. I hope they haven't creased, won't abuse them as much.
Once again, guitarist/bassist abusing drivers. lol
Cheers,
2016 will be great!
Going to remove the capacitor all together. I may just add an L Pad or two with bleed caps. The main goal was to have a full range cabinet that can handle a lot of low end. Celestion g12's bark with the volume I may drive them in...I have tested my cabinets without highpassing and it has scared me. I hope they haven't creased, won't abuse them as much.
Once again, guitarist/bassist abusing drivers. lol
Cheers,
2016 will be great!