RSD 65cs questons

billyrohm · Post by **billyrohm** » Thu Dec 13, 2007 10:56 pm

I was installing my Rsd65cs today and found that the woofer out on one of the crossovers does not work, I have a few questions:

How much does the crossover actually do for the woofer?

If I connected the tweeter to the crossover and the woofer to the input would the woofer be okay?

They will be run off of the front half of my ZX475Ti

Post by **fuzzysnuggleduck** » Thu Dec 13, 2007 11:02 pm

Sans crossover your woofer will be trying to play frequencies far higher than it was ever meant to play and will as such, likely suffer in the frequency range it is supposed to play.

Besides that, it would leave your left/right sounding unbalanced.

dedlyjedly · Post by **dedlyjedly** » Thu Dec 13, 2007 11:26 pm

your zx475ti has the crossover potential to replace the crossovers that came with your component set. each tweeter and each mid would have its own channel of amplification. of course that accounts for all the channels on the amp, but rear fill is for suckas.

billyrohm · Post by **billyrohm** » Thu Dec 13, 2007 11:27 pm

fuzzysnuggleduck wrote:Sans crossover your woofer will be trying to play frequencies far higher than it was ever meant to play and will as such, likely suffer in the frequency range it is supposed to play.

Besides that, it would leave your left/right sounding unbalanced.

The ZX475Ti has a crossover, although it will be set to high pass.

Does the included passive supply a band pass to the woofer??

billyrohm · Post by **billyrohm** » Thu Dec 13, 2007 11:29 pm

dedlyjedly wrote:your zx475ti has the crossover potential to replace the crossovers that came with your component set. each tweeter and each mid would have its own channel of amplification. of course that accounts for all the channels on the amp, but rear fill is for suckas.

Yeah, I know that would work but I'm using the rear channels to power an Xmax 12.

If I set the crossover to the proper frequency will the woofer hooked directly sound pretty similar???

Post by **fuzzysnuggleduck** » Thu Dec 13, 2007 11:29 pm

billyrohm wrote:
fuzzysnuggleduck wrote:Sans crossover your woofer will be trying to play frequencies far higher than it was ever meant to play and will as such, likely suffer in the frequency range it is supposed to play.

Besides that, it would leave your left/right sounding unbalanced.
The ZX475Ti has a crossover, although it will be set to high pass.

Does the included passive supply a band pass to the woofer??

That was my understanding... I could very well be off my rocker though.

dedlyjedly · Post by **dedlyjedly** » Thu Dec 13, 2007 11:37 pm

I'm almost certain that the rsd crossover does not provide a lp on the upper frequency limit for the midrange. Most mids experience a natural roll off on the upper frequencies that make that type of filter unnecessary.

So...you could parallel the mids and the inputs to the rsd crossovers to the front channels of your zxti, letting the passives handle only the hp for the tweeters.

billyrohm · Post by **billyrohm** » Thu Dec 13, 2007 11:48 pm

dedlyjedly wrote:I'm almost certain that the rsd crossover does not provide a lp on the upper frequency limit for the midrange. Most mids experience a natural roll off on the upper frequencies that make that type of filter unnecessary.

So...you could parallel the mids and the inputs to the rsd crossovers to the front channels of your zxti, letting the passives handle only the hp for the tweeters.

Thats what I thought, thanks, I didn't find this out until I put the first door back together, so I might have to live with the sides sounding a little different for a while.

How different do you think they might sound?

Post by **fuzzysnuggleduck** » Fri Dec 14, 2007 9:06 am

Well, you learn something new every day.

Post by **Bfowler** » Fri Dec 14, 2007 9:10 am

even though i have no reason to doubt jedly because he is smart and kick ass and does this for a living...I'm totally sceptical about the crossover not providing LP for the mid.

at any rate, it wont hurt your components so its worth a shot.

on a similar note. there are only like 6 things in the crossover....its got to be a simple loose solder or something....maybe take it apart and post some pics?

*edit*....errin just reminded me...if it didn't have a LP, it would just have a capacitor in place....

billyrohm · Post by **billyrohm** » Fri Dec 14, 2007 10:00 am

I took it apart, let me tell you, it was a beaoch, and everything looks good. I think that it should be alright. The coaxials dont have anything for the woofer right....

Either way, its what I'm going to do.

Thanks

dedlyjedly · Post by **dedlyjedly** » Fri Dec 14, 2007 11:20 am

Yeah, the more I think about it, I'm not very sure. My rationale was that the coaxial versions of the RSD are the same drivers as the components so it obviously doesn't cause damage to run the mid without the crossover. But, it may very well still have a LP which could help reduce a bit of break-up on the higher frequencies.

What about you guys that run active setups? Do you typically utilize a bandpass for the midrange or not worry about it?

**your zx475ti could provide the mid a bandpass!

**

Post by **bdubs767** » Fri Dec 14, 2007 11:25 am

dedlyjedly wrote: What about you guys that run active setups? Do you typically utilize a bandpass for the midrange or not worry about it?

Try sounds like shit if you dont.

billyrohm · Post by **billyrohm** » Fri Dec 14, 2007 12:37 pm

I'll know soon enough. My car is coming along slow, I dont have much time to work on it. We'll see.....

Post by **VW337** » Fri Dec 14, 2007 3:57 pm

The XO supplies an HP filter for the tweets an LP filter for the MIds and a notch filter.

Yes the Mids do have a natural roll off, but they just won't sound as good without an LP on them.

billyrohm · Post by **billyrohm** » Sat Dec 15, 2007 6:11 pm

dedlyjedly wrote:I've got some tantrumx crossovers, but I don't know how the crossover points would compare to the rsd.

What do you guys think about this??

Post by **VW337** » Sat Dec 15, 2007 7:47 pm

Get your XO's warrantied

billyrohm · Post by **billyrohm** » Sat Dec 15, 2007 9:34 pm

If you saw what I had to do to the crossover the get the board out you would know why I cannot get it warrantied. There was a large amount of glue in there.

HoseHead · Post by **HoseHead** » Sun Dec 16, 2007 2:15 am

It's epoxy and is used to secure the circuit board components against vibration. It's an art to get in to repair and you should have specialized circuit board repair system like a Pace Kit. It has specifically designed tips and controls for multi layer and military spec board repair.

Pace Inc Site

A Dremel tool, a variable current soldering iron and piles of patience will also work in your case. A lot of time, so hiring a pro would be out of the question cost wise. Throw away devices. Chances you take when you buy used electronics, we've all been there. You could just go active.

I have several passive XO units here - Boston Acoustics, KEF, PG - that I'll probably never use. I usually run active XO as it provides me superior tuning control. But as mentioned several times above, CS sets have engineered roll off points so they should stay together if running passive.

I can't break up a BNIB RSd CS 6.5 set though. Sorry.