Doc modding Marantz imperial 7

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Geoff.R.G
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Re: Doc modding Marantz imperial 7

Unread post by Geoff.R.G » Sun Nov 26, 2017 4:31 pm

Dr Bunsen Honeydew wrote:
Sun Nov 26, 2017 2:18 pm
Probably because "standing waves" is just another forum bullshit.
I suspect it has something to do with not understanding radio. In the days when almost everybody had a tuner one would occasionally see reference to VSWR (Voltage Standing Wave Ratio). Probably someone latched on to the Standing Wave bit and decided it would apply to any wave. Indeed standing waves are possible in sound and radio contexts as well as water but, unless you are in the habit of playing test tones through your speakers, it just isn't going to happen.

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karatestu
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Re: Doc modding Marantz imperial 7

Unread post by karatestu » Sun Nov 26, 2017 6:08 pm

Thanks Geoff. I sometimes obsess about things i shouldn't. I am an over engineering, belt and braces kind of guy. :roll:
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karatestu
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Re: Doc modding Marantz imperial 7

Unread post by karatestu » Tue Nov 28, 2017 3:31 pm

It's wet here this afternoon so I have decided to finish my second isobaric bass cube :dance: Beats working :guiness;

:epopc: :epopc: :epopc:
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Dr Bunsen Honeydew
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Re: Doc modding Marantz imperial 7

Unread post by Dr Bunsen Honeydew » Tue Nov 28, 2017 3:36 pm

:epopc:

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Dr Bunsen Honeydew
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Re: Doc modding Marantz imperial 7

Unread post by Dr Bunsen Honeydew » Tue Nov 28, 2017 3:40 pm

Watch out for the standing waves in that rain or more dangerously the big puddles :lol: :lol: :lol: :lol: :lol:

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karatestu
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Re: Doc modding Marantz imperial 7

Unread post by karatestu » Tue Nov 28, 2017 5:08 pm

Managed to avoid any standing waves in the puddles.

Well, it is done and I am currently listening to them.......1st track being played. :dance: :dance: :dance:

Only thing I am going to say at the moment is that having only one bass cube connected did not do this justice. In fact It sounded wrong compared to this - both big bastard isobaric bass cubes (BBIBC) playing at the same time. :guiness;

More in a while, I am too busy enjoying this. Oh my word...............
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karatestu
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Re: Doc modding Marantz imperial 7

Unread post by karatestu » Tue Nov 28, 2017 5:30 pm

Turned the wick up a bit. Playing one of my test CD's - Chemical Brothers - we are the night.

Well, the house is fecking moving :dance: Not a hint of bloat, boom or sogginess and these buggers go so deep I am at the centre of the earth. :guiness; What is more there is absolutely no over powering of the mid & high frequencies. They are as clear as a bell. All the detail is there, in fact there is more, probably because of the bass being tighter. I am hearing things I have not heard before - not in your face detail which is shoved down your throat but lovely sumptuous, harmonic detail that is every where in the room

Having both BBIBC's running has centralised the sound stage and tidied up the imaging a bit compared to having only one plugged in.

I am at ear splitting volumes in my small room and they are not fatiguing me at all. I just want to turn the volume up and up and up :shock:

I can't wait to get the runs of LS6 hooked up to these bass cubes and smaller cuboids. Then there is the TIS I have not plumbed in yet. It is Christmas every day with all things NVA. :guiness; :guiness; :guiness;

More later when I have managed to calm down and compose myself.
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Dr Bunsen Honeydew
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Re: Doc modding Marantz imperial 7

Unread post by Dr Bunsen Honeydew » Tue Nov 28, 2017 5:50 pm

:twisted: :twisted: :twisted: In the full on Cubix Pro there are 3 x 8 inchers in isobaric config - to go one better you have to have three 12 inchers :twisted: :twisted: :twisted:

(loads or evil laughter echoing off into the distance)

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karatestu
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Re: Doc modding Marantz imperial 7

Unread post by karatestu » Tue Nov 28, 2017 6:11 pm

Oh you evil man.... :naughty: :naughty:

As if I need any leading on. Don't encourage me. :shhh: Don't my two 12 inchers equal your three eight inchers ? :lol: :lol: :lol: they both add up to 24 :lol: :lol: :lol: :lol: :lol: :lol:

Can you imagine the size of the things with three 12 inchers inside ????????????????

I just can't believe what I am hearing with these speakers. They can go from a whisper to a growl in no time. I am listening to Weather Report - Domino theory at the moment. It is a very dynamic recording. Very quiet bits which go to loud in an instant. These speakers portray it effortlessly.

The composure of these things is astounding. (I have turned in to Marco again) Whilst I was expecting some improvements in the bass I did not expect this much. On the other hand, I was not expecting any improvements to the mid and high frequencies but I am clearly hearing lots of improvement here. The wealth of detail present is ridiculous. It is beautiful harmonics and very subtle qualities of a musicians playing that were clearly fogged over before.

It is all about the music of course. I am floating in beautiful music. Big thanks to you Doc, could not have done it without you :guiness; :guiness;
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SteveTheShadow
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Re: Doc modding Marantz imperial 7

Unread post by SteveTheShadow » Tue Nov 28, 2017 7:00 pm

Great work Stu!
Slowly but surely, the semi-omni is starting to make waves: big bassy waves in your case. Watch that wall plaster. :lol: :lol: :lol:
BTE Designs modified Lenco L75 idler turntable, Rega R200 Tonearm, Goldring E3 MM cartridge, NVA Phono1 phono stage.
Mac-Mini music server with iTunes, AppleTV4 media streamer, Musical Fidelity M1 DAC,
NVA A20/P20, 25WPC stereo power amplifier/passive control unit,
own design, semi-omnidirectional, transmission line speakers- "The Flatback Banned".

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