Zicdave

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  • Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10758

    Most importantly the electronic bits… :
    The AER is left alone. just it is padded down to 95 db with high quality ceramic resistors… (Monacor)
    As I have done measurements and simulation on the AER on this baffle, I already knew the bass response in OB is very weak. The Dipole 15 is paralleled to 4 ohm, so the sensitivity is already up. Also it will have to work again a 16 Ohm driver (14 if measured). So the differences between sensitivity are balancing out. The Dipole 15 is currently just filtered passively with a 4,5 mH coil (laminate copper coil) (bloody 200 USD a pair).

    So the rule of the Dipole is to support the AER, as much as possible and perfectly fits to the loss curve of the AER. It looks like it had been filtered 6db/oct from 250 Hz… so the Calculations were easy…

    I will do the measurements soon to see the scientific bit as well….
    The AER driver first was mounted from the back, looked better but I had a phase difference… didn’t sound right… mounted from the front… perfect immediately. Obviously could had been avoided with DSP and active bi amp from the first time, but I was really curious of a passive system first.
    Now the most difficult bit… how does it sound??? Well impossible to describe. I will try to make a YouTube video. Which still doesn’t give back the feeling of it… it nailed me to the sofa for three days continuously. I was amazed by the details, the quickness of this speaker. And it is all emphasized by the AE Dipole…
    The simulations were done with the standard EDGE before. Both drivers are off set. The layout is a bit circular, but it isn’t at the end and by offsetting them really avoids any resonance…

    Tested with all sorts of music.

    On solo classical/jazz instruments. It is amazing. Phenomenal. You could see the player. You hear the noise from the instrument itself, as clicking of the piano, or the rattling of double bass or cello.
    Bach, Cello sonatas, starker.

    Chamber music. All players place is heard precisely… all instruments in detail, the sum is perfect. I have never heard chamber music before like this.
    Jordi Savall. Anything. La folia recommended

    Singer. Opera. God. God and my God. And again. They are in my living room… F****.
    Villazon, Pavarotti, archive Gigli and Di Stephano and Callas…

    Jazz singers. I am in a jazz pub. Oh no it is my living room… where is the smoke coming from?
    Krall, Morgana King, Norah Jones, Stacey kent…

    Opera. I think a good opera record is a cutting edge for the speakers. At least one of… I am an opera fun. I have been sitting in the first row of the Scala. Or the MET. No compromise. Only pleasure. The Dipoles are the base, no doubt. They support the fullranges and you feel like you really saw the stage. The choruses, the orchestral groups… the solists… and I have come to the limit, where I can understand why different CD companies are criticized for their recording qualities… there is a huge difference between EMI and DG, Decca and RCA… I never heard this difference. and it really matters… God. I am destroyed. I become a fussy idiot.

    The further plan for these is to change the amplification to active + DSP for the bass units… a project for next year. I know it will take me further now and I know I want to make this step because I hear the baffle roll off loss. But even so it is the most phenomenal piece of kit I ever had.

    I will update you with the final version next year.

    The messages: (to me at least..)

    The AE Speakers company runs a very honest, very nice service, congratulation to it. After this their products are extremely good quality. Not mass produced, nearly custom built.

    It well worth to try other speakers for this project before, as at least now I know these are the BEST. Stopped looking for other…


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10757

    [attachment=1:4id792md]PHOT0527.jpg[/attachment:4id792md]

    And the final result is:


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10756

    as I wasn’t happy with the result… i had to step further.. and this is where i met John, from AE Speakers…

    I have been waiting 5-6 weeks to put my hand on these drivers…

    The wait well worth it. They are amazing. Never heard anything better… compared to Oleg’s drivers, they play effortless bass, right down to the 30 hz. Uncolored, detailed… The high bass is uncolored compared to Rullit’s driver, that one had a warmer, more human tone… but this driver in overall is the best woofer i ever heard in open baffle installation….

    The build quality is nothing but superb. massive frame, the membrane is specially rigid, the magnet is huge, the suspension is firm, but still under hung… the electronic part is I think in preference to PA systems, but still very easy to use. The mounting of the driver is easy, user friendly. Couldn’t be better.

    The price/ quality ratio is the best best best ever I got so far….

    The wires are 99,999% silver OFC 2,5mm specially for audio. practically zero distorsion.


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10762

    The drivers..

    The fullrange was undebateble AER MK1.

    The bass unit was first time Oleg Rullit’s wooden cone driver, especially designed for open baffle and free air applications… I have never heard such high bass details before. The reason why i had to swap it, it had no TS dataat all apart from the impedance which made the use of it difficult and I think I was getting cancellation from my installation… It went right down to 30 Hz on free air, but never went below 60 Hz on baffle… Disaster. The unit was returned to Oleg, who was a perfect gentleman and returned the money for it.

    I really felt bad about it as this speaker is a gem… but it didnt work in my hand. (or in my baffle…)


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10761

    Luckily the vardnish were sitting very very nicely on the top of the textured paint. The result was really really good. Uneven surface on the back and smooth surface on the front.

    Three layers of satin clear varnish was applied to the front panel for a further gloss…

    And finally i was indoor…


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10760

    The first layer of varnish


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10759

    Luckily when it has dried completely become pale and witheish. So it was ready to take any colour on the top of it. It has attached to the primer coat very well, so I have gained a kind of textured intermediate layer from it, even if it was aimed to be the final layer.

    The varnish was a quick drying one, so I was able to finish the front varnihs in two days. The varnihs layers were sanded with 300 sanding paper between tha layers. very smooth result.


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10768

    The first idea was applying a special paint, which was a structured, stone like paint… The science behind it is the structured paint is not reflecting the resonances as much the smooth surface. The result was good, but I didn’t really like it as a colour… I wanted something else

    It was good, but I wanted something better colour match… basically i was wrong, i have to admit…


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10767

    And here are the proper pictures….

    three layers were applied and the layers were sanded with 120, than 180 and with 240 sanding paper…


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10766

    After drying it for a week (my wife mercifully let us indoor) I have applied the primer coat of paint.


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10765

    Finally the front panel was glued. For this layer i have to admit I had to use clips….


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10764

    The next step took three days again. Sanding, and sanding… and a bit more sanding….


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10763

    I know the woodwork bit will leave a bit of room to criticize, but anyhow. It was a long procedure to assemble all the layers together. As the CNC did a good job, I had less than a millimeter discrepancies on the edges and I ended up with a very reasonable and smooth surface…


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10755

    The assemble was made in the garden, which in UK is a strongly weather limited thing.. 🙂

    The layers were glued and screwed together. The screws after drying were removed. I didn’t believe in clipping, as I tried it before and I found the screw in multiple locations provides stronger pressure.

    It took two weeks to get all the layers together.


    Participant
    Zicdave on · in reply to: Open Ballfle with fullrange and Dipole 15 #10754

    The front panel was covered with a protective layer later to save from injury

Viewing 15 posts - 1 through 15 (of 15 total)