I need a capacitor....or something

Ron-P

I have my surrounds (RT25i's) set to small. I want to set them to large, but do not want them to see the full frequency range. So, is there a capacitor or somethig I can put inline, at the binding post of the speaker that will cut out anything below 80Hz or so?

I prefer the sound with everything set to large, yet I do not want to blow the 25i's up.

Peace Out~:D

Steve@3dai

You can get what is called a "bass-blocker", most car audio shops carry them.

- Steve

izafar

why do you wanna set them large and still not want the whole frequency response?

Imran

Steve@3dai

Might have a slight bit of distortion if he drove them too hard at the lower frequencies. The internal crossovers don't filter out signals, just route them.

- Steve

izafar

Now I am all confused. I also has RT25is as surrounds. If I set them to small then the bass information will be filtered from them and will be routed to Sub (or mains). If I set them large and put a high pass filter on them to block the low end frequencuies wouldnt I be missing that sound from my system.


Imran

CHRIS

Ron-Parts Express has them cheap. They just snape on the cable.

Ron-P

Chris, are they the bass blockers?

Why? Because my SR5000 lets me set everything to "large" and the sub to "yes". This is the way it sounds best. I get a real nice blend with everything.

If I set everything to small, the bass is overkill and the mains sound weak. So, I like everything set large with the sub on, sounds excellent. But, because the 25s only go to 50Hz, at loud levels I can pick up a bit of distortion. A bass blocker set at 50Hz or even 60Hz would work great.


Peace Out~:D

ncstatesman

wouldn't the use of a cap sharply cut-off the bass freq's below that freq, ie, there would be no gradual attenuation/slope of the signal below that freq?

ncstatesman

wouldn't the use of a cap sharply cut-off the bass freq's below that freq, ie, there would be no gradual attenuation/slope of the signal below that freq?

gidrah

If these speakers were hooked up to a stereo receiver back in the days of old, they would be getting the full frequency spectrum. They would only reproduce what they are capable of and roll-off. And it would also be 2 more connections. But that's just my opinion.

Good luck!

MIKLSAN

Steve,
What kind of receiver are you using? Do you know for sure that the crossover freq for the small speaker setting is 80Hz? Some receiver vary. Some higher end receivers actually have variable or even defeatable crossovers to help tune your system.
nc,
All crossovers have a "slope" that dictates how rapidly they roll off. In the case of a simple capacitor or "bass-blocker", that slope is 6 dB per octave. Assuming you used a cap that began to roll off at around 80Hz, you would be 6 dB down at 40Hz, 12 dB down at 20Hz, etc.

Good listening!

CHRIS

Ron-They are bass blockers. If I find the part # I will post it.

madmax

Ron,
Assuming these are 6 ohm speakers you can put a 320 mF cap in series with the woofer to get a gradual rolloff below 80Hz. The problem is that if you put this at the enclosure input you also affect the tweeter crossover. You would have to put it on the wires inside after the crossover at the woofer. Just remove the (+) lead from the woofer and put it in series. Also make sure you use a bipolar electrolytic 100V cap. (they are in a can like a normal eletrolytic but have no polarity marked) RS or Parts Express should have them.

The Parts Express part# is 027-372
www.partsexpress.com
madmax

CHRIS

Ron-part #s from P.E. for bass stoppers. They go inbetween the crossover and the driver.
266-200
----205
----210
----215
----220
----225