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High Pass Filter for Mains

My problem is too much bass and no acoustic way to control it. I've managed to reduce the 10db bump at 63hz to 5 db, but I want to try a sub to better control it. So my plan was to high pass my mains and use the sub for control below 90hz. I've found several active crossovers but they're both expensive and overkill for what I need. I'm looking at an SVS 1000pro sub. 

I found what I need at Marchand Elec. for a reasonable price.

XM46SB-AA   Passive crossover 24dB/oct in small box,RCA, two channel  $ 325.00

But there is a 4 week lead time and I'm not so confident in the company after a brief conversation. So one question is about whether this company is solid and worth waiting for the product. 

Meanwhile, I thought I'd ask the group about alternatives or other suggestions. Are there other high quality passive HP filters out there under $500? I also looked at the HSU High End crossover but it's active and I don't really want additional electronics in the way. I don't care much about the packaging as long as the parts quality is good. Maybe there are other companies like Marchand who make such a product?

 

mashif
erik_squires
16,088 posts
 

Op: A single cap is 6 db/octave.

Keep in mind that total rolloff is additive

  A sealed speaker is 12 db/octave so adding 12 = 24 total

mashif OP
244 posts
 

Thanks for the inputs.

I think I'm going with the Marchand balanced passive filters with a 80hz cross. It's $200 more but fits my connectivity better. What I meant about "a single cap" is its a single connection for me. Inside it's full of components. He offers 30 day returns so I'll order the sub when it arrives and have 30 days to evaluate. 

I'm just surprised with all the niche audiophile products out there, only one guy makes these. It makes me wonder whether this is an unusual endeavor in audiophileland. I've seen some previous discussions but no real conclusions. I'll report back when I complete the experiment. 

daledeee1's avatar
daledeee1
565 posts
 

I've had a Marchand for over 20 yrs.  I've had Phil Marchand check it.  He has always been accommodating for me.  He uses good attenuators which make a difference and put new op amps for mine.

The new company Sublime looks to be comparable.

jheppe815
65 posts
 

I bought a 2-way electronic crossover from Phil Marchand last year.  It's built like a tank and sounds fantastic.  A very good friend is running the same Marchand crossover in his system, and it's been rock solid.

dougthebiker
210 posts
 

I’m pretty sure GR Research, you can google their website, makes passive hi-pass filters.  They design crossovers for speaker manufacturers.

They will use much higher components than anything discussed above and they are very reasonably priced.

A cheap hi-pass filter will seriously degrade your sound.

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