Connecting active KEF subwoofer to Marantz 6010OSE - AVS Forum
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post #1 of 12 Old 07-13-2014, 10:25 AM - Thread Starter
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Connecting active KEF subwoofer to Marantz 6010OSE

Hi there all,

I have searched the internet for hours and still dont quite understand what is required,....so I decided before blowing myself up I post this on the forum. I am a bit lost.

I have the MArantz 6010OSE amp (pictured) running to B&W speakers (pictured)

I have just acquired a KEF PSW2000 subwoofer which has its own built in amp (pictured)

My dilemma is how can I connect the line out from the MArantz to the line in on the KEF sub?

The marantz does not have its own dedicated sub port: all I can find is Tape out and CD-R/MD port (which I guess is another line out)

So can I use either of these as a line out to the Subs line in?

What I am doing at the moment is running 3.5mm jack to phono so the TV is running through the AMP to the B&W's can I then second this signal from the TV out the amp and into the Sub woofer to have the sub and speakers playing the same signal?

Sorry for the long first post however I am well and truly confused any help is greatly appreciated

I am sure this will get more complicated as I have read that you can run the speakers from the AMP to the speaker input on the sub which has confused me even more and to throw into the mix some KEF HTS2001 egg speakers (5 of them) this could get tricky

Thanks everyone and hope this is in the right part of the forum sorry if it isnt!
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post #2 of 12 Old 07-13-2014, 10:45 AM
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If your Marantz doesn't have RCA pre-outs, just connect the speaker outputs to your sub as well.

Or perhaps do it like a Bose system, amp into sub high level, then out high level into speakers. Or through low level high pass, so your amp won't amplify low frequencies, probably below 80hz. Read your subwoofer manual.

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post #3 of 12 Old 07-13-2014, 11:22 AM - Thread Starter
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Quote:
Originally Posted by fatbottom View Post
If your Marantz doesn't have RCA pre-outs, just connect the speaker outputs to your sub as well.

Or perhaps do it like a Bose system, amp into sub high level, then out high level into speakers. Or through low level high pass, so your amp won't amplify low frequencies, probably below 80hz. Read your subwoofer manual.
Please can you specify exactly where speaker inputs are on my sub?
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post #4 of 12 Old 07-13-2014, 11:25 AM
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The top four

Like this, this is one method.
http://wealthysoul.files.wordpress.c...ion1.gif?w=510

Krell Evolution 900e x 7

Bose Jewel speakers.

 

Jealous of my speakers?

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post #5 of 12 Old 07-13-2014, 11:33 AM - Thread Starter
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Quote:
Originally Posted by fatbottom View Post
The top four

Like this, this is one method.
http://wealthysoul.files.wordpress.c...ion1.gif?w=510
ah, great thanks for this it is really helpful. I was so puzzled!

so this sends the signal from the amp (Marantz) direct to the amp on the sub (KEF) does that make the signal amped twice ie passing from one amp to the next? Or does it make the Marantz amp redundant as the speaker signal being beamed straight out???
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post #6 of 12 Old 07-13-2014, 11:38 AM
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Depends on the sub, your Kef may have a high pass on the speaker connection, or it may not.

Another method is just to send left/right speaker cable from your amp to your speakers, leaving the speaker cable from the amp to the speakers as they are now. I'm pretty sure this is safe, but double check.

Another way is using the in/out RCA from your amp to sub and back again, but your amp needs pre-out and power amp inputs

Krell Evolution 900e x 7

Bose Jewel speakers.

 

Jealous of my speakers?

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post #7 of 12 Old 07-13-2014, 11:46 AM - Thread Starter
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Quote:
Originally Posted by fatbottom View Post
Depends on the sub, your Kef may have a high pass on the speaker connection, or it may not.

Another method is just to send left/right speaker cable from your amp to your speakers, leaving the speaker cable from the amp to the speakers as they are now. I'm pretty sure this is safe, but double check.

Another way is using the in/out RCA from your amp to sub and back again, but your amp needs pre-out and power amp inputs
Hi,

yes I would like to keep the speakers to the Marantz amp as they are already if possible, however I am willing to try the setup you suggested.
The speakers are 100watts and I am wondering if the KEF is powerful enough for two 100watt speakers.

On the back of the marantz there is:
TAPE OUT
and
CD-R/ MD.
can I use either of these and connect to Line in on the KEF
also will this if its possible play the sub in sync with the MArantz amp playing the speakers that are already wired in?

Thanks
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post #8 of 12 Old 07-13-2014, 12:01 PM
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Those are tape looks, I believe if you use those RCA output into sub then input back into amp, it bypasses the Marantzs pre-amp stage so it'll be at full power and blow your speakers.

I'd use use speaker level from amp to speakers. Speaker level amp to sub.
or
amp speaker level amp to sub speaker terminals, and sub speaker terminals output into speakers.

If your sub has high pass that could benefit your standmounts, but you are going through a passive crossover circuit would could degrade sound quality.

Krell Evolution 900e x 7

Bose Jewel speakers.

 

Jealous of my speakers?

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post #9 of 12 Old 07-13-2014, 12:07 PM - Thread Starter
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Quote:
Originally Posted by fatbottom View Post
Those are tape looks, I believe if you use those RCA output into sub then input back into amp, it bypasses the Marantzs pre-amp stage so it'll be at full power and blow your speakers.

I'd use use speaker level from amp to speakers. Speaker level amp to sub.
or
amp speaker level amp to sub speaker terminals, and sub speaker terminals output into speakers.

If your sub has high pass that could benefit your standmounts, but you are going through a passive crossover circuit would could degrade sound quality.
now I am really confused.

could you just point it out in the photos

I am going out on the marantz l/r speaker output
to
l/r speaker input on the sub KEF
then l/r speaker out KEF
to l/r speakers

thanks
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post #10 of 12 Old 07-13-2014, 12:20 PM
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http://www.kef.com/uploads/files/en/...ion_Manual.pdf

page 16

actually I wouldn't use the high pass feature of the sub, it's too high at 160hz.


So what I'd do is get another stereo run of speaker cable. Leave your amp to speakers alone. Wire up speaker cable like you're bi-wiring, but connect that stereo run into your sub high level inputs.

Krell Evolution 900e x 7

Bose Jewel speakers.

 

Jealous of my speakers?

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post #11 of 12 Old 07-23-2014, 01:24 AM - Thread Starter
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Hi there,

back again.

I have gone for the simple option and am running two speakers wired through the SPEAKER OUTPUT and using the 3.5mm on the line in PHONO ports on sub.

When Switching the sub on for the first time I am getting a buzzing sound and a very faint background noise of the input.

ANy ideas what is goin on here? PS the amp on the sub is NOT powering my speakers either.

Thanks
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post #12 of 12 Old 07-23-2014, 02:36 AM - Thread Starter
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also when I switch the sub off I get a pop!
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