anthony wrote:

Both UB Horn roll off circa 130Hz in room.  There are a couple of rough MDF boxes here that I knocked up from spare sheet a while back.  Have not tested them specifically at the intended spot behind me but running around with a microphone shows those problem frequencies high at that location.  Probably need to get no lower than 40-50Hz with the midbass so was planning on using the Injection Channel from Melquiades and the Lundahl transformer, at least to start.  We will see.  The guy that wound my bass channel transformer is no longer doing it so if I go custom it will be with someone new (to me).

Romy the Cat wrote:

1)    Since you use the injection channel, stop using it. The injection channel was a ridiculous idea with exceptionally beneficial results, but now I have found it better. You have two Tannoy Red 10 drivers. Use the HF section of them as tweeters. You will be very surprised how beautifully they work as twitters in the context of S2 drivers as a mid-range. You can drive it from your Milq’s injection channel or change the transformer on your Milq’s HF channel.  It still will be an injection as I recommend crossing it with the second order between 1800 and 3000 cycles. So, the S2 driver and the Tannoy tweeter will work together.  All unpleasantness off Tannoy Twitter that we know from the sound of complete Tannoy red drivers will not manifest itself. The Red will not need an enclosure. I however built a small box because it just looks ugly when they hang along. When I have time, I will ask my mechanic to cut off the low-frequency basket for Tannoy. It will undoubtedly demagnetize the magnet, so it will be a ceremony to put it all the way back together. I will also need my Macondo frame modification to accommodate the driver. For the time being, a small box was a quick and convenient solution. Also, I do not know if the Tannoy Twitter will change its own sonic signature without this large woofer cone acting as a small rate horn.

Romy the Cat wrote:

2)    Do introduce educated direct radiator mid base channel. If you convert your high frequency channel to drive Tannoy Twitter, then you have the injection channel of your amplifier free to drive your new midbass. You will need a lot of power and a lot inductance in your transformer for midbass. I feel that Milq’s bass is a perfect candidate. After you introduce midbass you will certainly change how you use your woofer towers. I can only assure you that if you cross them at let's 20-30 Hz put them on a transitional slope, and let your mid base to cover down to 40-50 cycles, then you will have a completely new sound from the Scanspeaks

anthony wrote:

....but....sometimes I do wish for a less "white" sound up top.  More colour, or perhaps contrast, not that anybody could ever accuse my sound as lacking any of those things.

anthony wrote:

I am sure that correcting my midbass will change how I interpret the HF channel, but I am not certain exactly whether it will be perceived as more or less "white".  In the past, with other speakers, when resolution of the bass has been improved I have generally appreciated the high frequencies more but I am not so sure this time.  Melquiades/Macondo is different, and my instinct here is that as I improve the quality and quantity of bass in my room that I may appreciate my HF less, and it has almost been an excuse to follow interests other than audio for a while.  The energy and will to experiment and create in this endeavour has returned and it is time to once and for all finalise my bass in this room.

Romy the Cat wrote:

large Wilsons driven by first generation of Lamm ML2. It is important to know that it should be large Wilson, starting from Grand Slams, the small Wilsons are not interesting. I did not hear newest large Wilsons but I heard Alexandria with ML2, supposedly properly installed by Wilsons own people. If we discard lower base which is absolutely not appropriate for this price range they did superbly interesting job in mid base. It was super high contrast, surprisingly dynamic for low 90's dB sensitivity. However even then, without knowing what I know now, I detected that this spectacular mid base was always spectacular. It sounded like each orchestra get converted  into Chicago under Sir Georg Solti and each piece of music was flooded with overly errected brass. It was very impressive but in the end of the day it was still on algorithmic signature ever present in music.

Romy the Cat wrote:

Yes, sure. I wrote about it quite a lot at my website. In fact most of the large Wilsons that I heard where driven by ML2s...

Yes, the ide do not let large Wilson's to go down let's say 40 cycles is probably what I would do if I own those speakers.. I would probably plug the port, and if necessary change the base driver. My point is that you need to be absolutely insane if you go for Wilson's expense and to do to experiment how to get the sounds that you want outside of what Wilson offers. Did you see any person out there whoever tried to work with a large Wilson base? I didn't. Also, do not discard Wilson and they are not stupid and they know what they do. They do not sell sound they sell products. Pay attention how they position their subwoofers. None of them are sealed, instead they are ported and tune to use at the bottom of full range large Wilson speakers. Soon a or later or ported designs sounds the same producing absolutely identical port noise. I was listening yesterday a guy demonstrate please play back at YouTube and he was playing third movement of Tchaikovsky six. She use vintage large JBL and all double bass play literally the same note. In my book it is extremely annoying. 

Now, if you have large Wilson's and drive it with old ml2, and you are willing to discard anything that come from Wilson's under 40 cycles then you are in very good shape. Now you need to find a solution and it might be only infinite Buffle or sealed topology, that will do lower base. Then you need to find amplification and crossivering solution for this. If I were in those shoes and need it ready to go product then I will look for Dunlavy TWS-6 product or something similar. Obviously to drive those monsters would be a problem and if you insist to stay in Lamm wold then M1.1 might be a good choice to start. Nowadays nobody produce those solutions out of box and there's a reason for this as the people who do it seriously understands that it is very specific to the any given room and there is no way to abstract it to are ready to go product. Again you can use anything of the shelf to compliment Wilson's at the bottom but whatever I seen so far would not be and the level of large Wilson/ML2 midrange combination.

Unfortunately anything good person that I've seen who have large Wilsons so devoted to the products and never pursue any personal objectives, or even have any.