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Cross over question

Hello everyone. Not being completely satisfied with how the system was sounding in 2 channel mode (our system does double duty with HT and music) we decided to have someone trained in the Sumiko method take a crack at it. We have a Marantz 8805 into a Mc 8207 amp. Speakers are Kanta 3s with Rel S510 subs.  He did an amazing job and the music now is much richer, fuller and less forward. My only concern is he turned off the crossover setting in the Marantz which has allowed the Kanta 3s to deliver deeper bass than I thought they could do. Are the woofers in danger of damage with the crossover off? Should I turn the setting back on? The setting was set at 80 htz. He adjusted the sub crossovers individually by ear. Thank you for your advice 
ronboco
9 responses Add your response
ronboco OP
840 posts
 
@erik_squires 

Thank you for the detailed response. It really helps me learn when I get a sincere answer to what is no doubt a freshman question. 
ronboco OP
840 posts
 
@ russ69,
if GTG means what I think it does yes I surely am and why I joined this great forum. 
@millercarbon,
I believe you are correct. One other thing I forgot to mention that no doubt proved beneficial is I had run the audyssey room correction that came with the Marantz and he turned it off as well. These are things I don’t have the foresight to think of trying yet. I’ll get there ! 😂
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millercarbon's avatar
millercarbon
12,531 posts
 
So it was not "the Sumiko method" but the crossover/EQ changes that made the difference.
russ69's avatar
russ69
3,505 posts
 
"...Do you mean the built in EQ in the Marantz? That is off..."

You are GTG! .
ronboco OP
840 posts
 
@russ69 

Thank you for the input. Do you mean the built in EQ in the Marantz? That is off. 
@oldhvymec,

Thank you as well. Everything sounds great so far. Bass seems tight and smooth 
erik_squires
16,057 posts
 
No, I am sure that they will be fine running full range. 

While some things will change a bit they may not matter in a home.  Your main amps will now work harder than before.  This can make the speakers sound shrill or short of breath, but if you don't hear it then it's not a problem. The other issue, and again only if audible, is that your main speakers going full range might suffer from Doppler distortion but this is very unlikely in a 3 way.  This is usually a problem for smaller 2 way systems when the crossover can add amazing clarity to the midrange.
oldhvymec
5,101 posts
 
NONE!! they use a built in BOOST at 20-40 hz, depends on the manufacture.. Yes it will sound better in some cases, depends on your Boom Boom tolerance. Which way do you like it best.. That's what you use..

Regards
russ69's avatar
russ69
3,505 posts
 
"...Are the woofers in danger of damage with the crossover off?..."

No they are not but depending on the equalizer settings you could drive the loudspeaker into clipping depending on how hard you play the system. 
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