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ribbon phasing

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mbskeam

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SILVER-7t

Posts: 1984

Joined: Mon Jan 25, 2010 2:32 am

Location: Woodinville Wa

Post Thu Oct 07, 2010 3:30 pm

ribbon phasing

juat a ?????
so how do you tell what the phase is on a ribbon?

unlike a cone speaker these are not really marked with a plus/minus on the hook up points
or does it have to do with the magnets on the frame body?
not sure if this has been asked before.....
Mbskeam


#1 BLACK BEAUTY's made by the man, the myth, the legend Bob Carver
CARVER: TFM-75, TFM-45(3), SD/A-490T
SUNFIRE: Tube pre
2 sets of ALS'3, set of SILVERS, set of PLATS
AUDIOCONTROL: phase coupled activator
KENWOOD: BASIC M2a (2)

“Youth ages, immaturity is outgrown, ignorance can be educated, and drunkenness sobered, but stupid lasts forever.”
― Aristophanes

The only thing I'll feel......will be the RECOIL
Necronomicon Ex-Mortis....... Klaatu Barada Nikkto
"We should seek the greatest value of our action"
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Toy Maker

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Joined: Wed Oct 08, 2003 1:26 am

Post Thu Oct 07, 2010 3:40 pm

Re: ribbon phasing

Taken from the original Thiele - Small Parameters I have:
Electrical polarity: A positive voltage applied on the red terminal produces forward cone motion.

If you don't have the wires still soldered to the ribbon, let me know, I can post a picture of which is positive, and negative.
Whatever you do in life will be insignificant, but it's very important that you do it... because nobody else will.

‎~You think Einstein walked around thinkin' everyone was a bunch of dumb shits?~

SHUT UP AND ENJOY THE MUSIC!
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DaveS

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The OverLord of CarverAudio.com

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Joined: Wed Oct 08, 2003 1:47 am

Location: Sunshine-Empire State

Post Thu Oct 07, 2010 4:07 pm

Re: ribbon phasing

In all cases this is done with the ribbon standing up with the red and black wires at the BOTTOM just like they will be when put back on a panel.

Looking from the front of the ribbon the red lead goes on left side of the ribbon the black goes to the hole that is on the right side((((THE HOLE CLOSEST TO THE CENTER OF THE CIRCURTBOARD)))))).

This goes for ALL ribbons no matter 48" or 60" left side speaker or right ALL are wired the same.

30 " looking at the front the red wire goes on the left terminal black on the right ALL THE TIME for both left and right speakers.

Looking at the back of a ribbon the red wire will go to the right, JUST REMEMBER THE BLACK WIRE GOES TO THE CENTER OF THE BOARD.
The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government - lest it come to dominate our lives and interests”.
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mbskeam

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SILVER-7t

Posts: 1984

Joined: Mon Jan 25, 2010 2:32 am

Location: Woodinville Wa

Post Thu Oct 07, 2010 9:38 pm

Re: ribbon phasing

thanks I did not know that......

have a set of al3 that sound funny when I test with a cd that checks the in phase/out of phase....
the silvers sound good, but the 3's just sound funny.....
last week I tried moving the speaker hook ups around but it just did not sound right, got worse.
but did not show the same center that the silver do, when the in phase voice is played.....
will check when I get home.....


doing the the original ribbons and amazing subs this weekend.
going to use the CO from the plats for the subs and the CO from the originals for the ribbons.....
going to leave them in one piece and just mount them both on the back using the parts that I need.....
Mbskeam


#1 BLACK BEAUTY's made by the man, the myth, the legend Bob Carver
CARVER: TFM-75, TFM-45(3), SD/A-490T
SUNFIRE: Tube pre
2 sets of ALS'3, set of SILVERS, set of PLATS
AUDIOCONTROL: phase coupled activator
KENWOOD: BASIC M2a (2)

“Youth ages, immaturity is outgrown, ignorance can be educated, and drunkenness sobered, but stupid lasts forever.”
― Aristophanes

The only thing I'll feel......will be the RECOIL
Necronomicon Ex-Mortis....... Klaatu Barada Nikkto
"We should seek the greatest value of our action"
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angelod307

SILVER-7 TUBE AMP

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Joined: Sat Jun 06, 2009 10:56 pm

Location: manning, sc

Post Fri Oct 08, 2010 12:07 am

Re: ribbon phasing

yes they could be bad straight from carver. the last set i bought was backwards on one side. just like they said above, send me an email for photo's if you want angelod307 at msn dot com.
CarverFest: I just go for the arts and crafts

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