Phono Stage upgrade to complement Dohmann Helix One Mk 2

Dear @drbond : You already know that in the audio world always exist trade-offs when we want to make some room/system changes, nothing is perfect so don’t try to look for because just does not exist.

You need only a high pass because the low pass is made it by the sub’s. Now you can have that high pass with and active external crossover or you can do it at the input of your amps and for me this is the best high-pass trade-off because you add almost nothing: no added electronics, cables and input/output connectors.

The signal that goes to the amps from the CH goes directly or through the external high-pass filter and from your CH goes too directly to the subs. Btw, usually the high-pass filter setting up is in the 80hz-100 hz and you do not needs that the external/internal high-pass has additional gain because the high-pass gain is handled by the preamp. The gain of the low-pass by the sub's.

That’s it.

R.

@lewm : " I truly did wonder why you thought Raul’s quote was humorous. " . Easy, because he did not think in that way before. Seems to me that is his way of audio life kind of think because he posted twice something with no sense in reference to what I posted about sub’s, he said twice: " you was not the first person to said that " .

But where in hell posted I that " I was the first audiophile to said that " ?

Dear @drbond : lewm posted " You want a steep slope on the low pass filter going to the subwoof, because you don’t want the subwoof contributing to midrange ..."

Normaly subs comes with 12db/18db filter shape and the users always can change the low-pass frequency that at the end the sub internal dsp will tell us and through listening tests we can confirm is rigth or we can play with the sub crossover set-up characteristics till we are satisfied with. The Velodyne low-pass shape by default is 24db ( steep as lew posted. ) but selectable and its high-pass shape is 6db. My old Velodyne low-pass filter shape " initial 12db, 48db ultimate ", is what I read in its manufacturer specs.

In the other side, adding sub’s in any room/system means too that maybe we can need some kind of different room treatment maybe not or we can find out that we need to move a little the main speaker positions.

Subwoofers per se is not a " key on hand " solution to open the " door ", we always need some kind of work for the room/system good integration.

R.

@drbond, Are you dizzy yet? What you have here is a whole bunch of people making assumptions without a bit of first hand knowledge. The horse's mouth is right here. I have been using subwoofers with ESLs since 1979 and have been through every permutation you can imagine. I can promise you this, regardless of anything else you do you will never achieve state of the art performance out of your system without subwoofers. I can help you avoid all the mistakes I made over the years and get you set up. This is a thread about phono stages. If you want to talk about it message me. 

lewm : " I truly did wonder why you thought Raul’s quote was humorous. " . Easy, because he did not think in that way before. Seems to me that is his way of audio life kind of think because he posted twice something with no sense in reference to what I posted about sub’s, he said twice: " you was not the first person to said that " .

But where in hell posted I that " I was the first audiophile to said that " ?

You might be right… I agree that it seemed to you that it had no bearing on the topic,
Yet here we are talking about whether to use a capacitor and then how to hook the sub up, and it is a week later and you still claim that that post is not addressing some of the OP’s question on subs.

You choose to put in a capacitor, and others insert that HPF that I linked to… and then they use a powered subwoofer that is designed as a system.

At some point it is going to click as to it being a system and why I posted it.

Similarly that REL kind of clicked with me as being a bit incomplete in that is it not using the HPF between the preamp and the amp(s)… and the sub has no way to account for a dependable slope or crossover knee… so it is either too much bass or need a lot of TLC to make it blend.

Are you addressing me?