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Old 7th March 2010, 08:47 PM   #411
Makk is offline Makk  Finland
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Quote:
Originally Posted by planet10 View Post
The cross-section can be changed as long as area remains the same. One has to be careful if made too narrow. This brings the sidewalls close to the driver and can cause a "cupped" or "chesty" midrange colouration. Port can be moved from the bottom, to the front, back, or side. Just keep it as close to the bottom as practical. You can mount it on a wall, or lift it up as required.

dave
Still something about halfTower. I've done some thinking and came up with inner W160 and D108. H784,2 as in halfTower. I'd like to do front facing rectangular vent but I have no idea how to calculate it. In halfTower round vent is done with D2" and L5".

Any ideas? W would be (maybe) that 160mm. Should I do it "under the H784,2 or "in" it (kind of minus to height..)

Is this even possible
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Old 8th March 2010, 05:24 AM   #412
Nanook is offline Nanook  Canada
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Default listening comments, w/Nuforce Icon digital amp...

Had a chance to listen to the speakers again today. Listened mainly to Seal's "Soul" cd ( a great cd if you like soul with a slightly modern take).

equipment chain:
cdp--->Microline Drive--->Icon--->speakers

my basic comments:
WAy more bass (as expected due to the T-amp---ok, "D-amp", not based on the Tripath chip), due to decreased dampening factor of the amp. Depth is flattened, width remains about the same. Did I mention WAY more BASS!

So far the Icon DAC/headphone amp/amp is very enjoyable. If I could only get the great soundstage of the Nakamichi, and the tonality of the Icon, I could be set for a long, long while.

Next up, the McCormack DNA without resistors, then with. Then a Sanken based 20 watt SS , then some tubes...
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Last edited by Nanook; 8th March 2010 at 05:27 AM. Reason: typos
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Old 8th March 2010, 07:25 PM   #413
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Quote:
Originally Posted by Makk View Post
Still something about halfTower. I've done some thinking and came up with inner W160 and D108. H784,2 as in halfTower. I'd like to do front facing rectangular vent but I have no idea how to calculate it. In halfTower round vent is done with D2" and L5".

Any ideas? W would be (maybe) that 160mm. Should I do it "under the H784,2 or "in" it (kind of minus to height..)
You can convert the round port to a rectangular one bt keeping the same cross-section area and the same length. As the aspect ratio of the rectangle increases you will be adding "damping" to the port.

dave
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Old 8th March 2010, 09:30 PM   #414
chrisb is offline chrisb  Canada
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Quote:
Originally Posted by Nanook View Post
Had a chance to listen to the speakers again today. Listened mainly to Seal's "Soul" cd ( a great cd if you like soul with a slightly modern take).

equipment chain:
cdp--->Microline Drive--->Icon--->speakers

my basic comments:
WAy more bass (as expected due to the T-amp---ok, "D-amp", not based on the Tripath chip), due to decreased dampening factor of the amp. Depth is flattened, width remains about the same. Did I mention WAY more BASS!

So far the Icon DAC/headphone amp/amp is very enjoyable. If I could only get the great soundstage of the Nakamichi, and the tonality of the Icon, I could be set for a long, long while.

Next up, the McCormack DNA without resistors, then with. Then a Sanken based 20 watt SS , then some tubes ...

dude, what took ya so long?

try something like 6P15P-EB (SV83) in P/P with the Hazen suppressor grid mods - (this will not work on EL84/6BQ5 types with G3 internally strapped to cathode)

my lil' Scotti (ElCheapo variant) is quite delightful configured as such - an aggressive rebuild to a decrepit SCA35 should easily achieve similar results.

If as some speculation might have it, this could cause some intended consequences or reduce component life, it's too soon to tell, since I only listened to it for a couple of months before becoming consumed with a home reno project. But if it's good enough for someone like Eddie Vaughn in incorporate in a custom amp that he had to ship from Arkansas to Vancouver Island, I'll assume he's not worried about smokin' er up.
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Old 8th March 2010, 11:32 PM   #415
Nanook is offline Nanook  Canada
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Default what took so long?

They were "finished" middle of last week, I finally got em from Mike on Friday, had a listen to an A-88, and wasn't really that impressed. But as soon as I got em home into familiar surroundings, I was blown away. At this stage of the build, they are pretty fugly.

Mike's gonna wrap them in Birch veneer, then I'll decide on a proper finish.

Chris, thanks for the excellent instrux on veneering.

my listening comments are being posted as I hear them. These speakers deserve to have the best possible amplifier in front of them. Whether that be class D or tubes or Nelson Pass design, or, or,

The little Icon really is something with these, but as I stated, flattened the image somewhat. Although perfect for a desktop, not perfect in a main system (the Icon). Mike is planning on using them as (large) desktop speakers. We will also remove the OBs from the Spirits, and replace them with the dMar-Kens. This could very well be a very interesting experiment. Personally, I could live happily with either the Jordans or the CHR-70s. But the high value of the CHR-70eNs make it a no brainer. hmmm 2 pairs of CHR-eNs for less than the cost of one pair of Jordans?

I was thinking that a sca-35 re-make or similar would be a great "Nanook Audio" product and could be a complete solution for many. or a Moose preamp/Mos-Fet Sure style phono pre with MC
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Old 9th March 2010, 06:47 AM   #416
chrisb is offline chrisb  Canada
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Quote:
Originally Posted by Nanook View Post
They were "finished" middle of last week, I finally got em from Mike on Friday, had a listen to an A-88, and wasn't really that impressed. But as soon as I got em home into familiar surroundings, I was blown away. At this stage of the build, they are pretty fugly.

Mike's gonna wrap them in Birch veneer, then I'll decide on a proper finish.

Chris, thanks for the excellent instrux on veneering.

my listening comments are being posted as I hear them. These speakers deserve to have the best possible amplifier in front of them. Whether that be class D or tubes or Nelson Pass design, or, or,

The little Icon really is something with these, but as I stated, flattened the image somewhat. Although perfect for a desktop, not perfect in a main system (the Icon). Mike is planning on using them as (large) desktop speakers. We will also remove the OBs from the Spirits, and replace them with the dMar-Kens. This could very well be a very interesting experiment. Personally, I could live happily with either the Jordans or the CHR-70s. But the high value of the CHR-70eNs make it a no brainer. hmmm 2 pairs of CHR-eNs for less than the cost of one pair of Jordans?

I was thinking that a sca-35 re-make or similar would be a great "Nanook Audio" product and could be a complete solution for many. or a Moose preamp/Mos-Fet Sure style phono pre with MC

Stew - I really meant - what took you so long to consider trying "some tubes" with the Mark Audio drivers.

enjoy
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Old 9th March 2010, 07:28 PM   #417
Nanook is offline Nanook  Canada
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Default tubes...

all I have here now is my old Phillips console w/external speaker hook up.

My brother has an old Sears Silvertone console he's killing off. He's gonna salvage the receiver and speakers for me. I'd also thought of the SCA35. What I might really like is a HK, Scott, or better yet a Pilot integrated revamped...I just love the cosmetics. Ideally a Leben would be nice (ah, but I'm so poor).

Mike only has the A88, and I have the defunct 300B (still). I guess we should have just left that completely alone, hind sight is 20/20.
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Old 9th March 2010, 07:44 PM   #418
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...or better yet a Pilot integrated revamped...I just love the cosmetics.
Might have one of those waiting to be a project... it's ECL86 PP, but could easily be simplified into EL84s.

dave
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Old 9th March 2010, 09:04 PM   #419
chrisb is offline chrisb  Canada
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Quote:
Originally Posted by Nanook View Post
all I have here now is my old Phillips console w/external speaker hook up.

My brother has an old Sears Silvertone console he's killing off. He's gonna salvage the receiver and speakers for me. I'd also thought of the SCA35. What I might really like is a HK, Scott, or better yet a Pilot integrated revamped...I just love the cosmetics.
The thing about the Dynacos, is that many examples are sufficiently rotted out that a full rebuild is necessary, and if you don't mind eliminating much of the redundant switching, etc., there's room to do some interesting stuff.

Quote:

Ideally a Leben would be nice (ah, but I'm so poor).
Now that's just too funny - I'd thought about posting a link to the 6moons review of that or the Luxman SQ N100


LUXMAN | PRODUCTS | VACUUM TUBE INTEGRATED AMPLIFIER SQ-N100


Click the image to open in full size.





Quote:

Mike only has the A88, and I have the defunct 300B (still). I guess we should have just left that completely alone, hind sight is 20/20.
if only we did learn to see these things coming
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Old 9th March 2010, 10:26 PM   #420
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...and I have the defunct 300B (still)
Bring it with when you come. Mr FixerMan can likey make it sing again

dave
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