FAQ  •  Register   •  Gallery •  Login

It is currently Fri Oct 31, 2014 7:08 am

Ribbon buzzing

<<

ecc6c2

Newbie

Posts: 7

Joined: Sat Sep 18, 2010 4:03 pm

Post Thu Oct 21, 2010 1:45 pm

Re: Ribbon buzzing

Another member cut me a deal on a rebuilt ribbon and am I finally able to enjoy the carver amazings without the annoyance of the buzzing. Everything sounds great with the new ribbon but I did notice that according to my radioshack SPL meter, the speaker with the new ribbon (left speaker) is 2db less sensitive than speaker with the 2 original ribbons (right speaker). I am using my onkyo receiver as a preamp and have bumped up the output to the left speaker 2db to match the SPL of each of the speakers. I could potentially see this being a problem if I drive the speakers to hard as the left channel will have to work nearly twice as hard as the right. Are differences in sensitivity common with new ribbons? Thanks for the help.
<<

mbskeam

User avatar

SILVER-7t

Posts: 1984

Joined: Mon Jan 25, 2010 2:32 am

Location: Woodinville Wa

Post Thu Oct 21, 2010 2:36 pm

Re: Ribbon buzzing

give it a burn in....
run the one speaker with pink noise or music with lots of dynamics....break it in when you are at work.....

new ribbons sound bright.....
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"
<<

Toy Maker

User avatar

Puppet Master

Posts: 6497

Joined: Wed Oct 08, 2003 1:26 am

Post Thu Oct 21, 2010 7:30 pm

Re: Ribbon buzzing

2db LESS sensitive ?? That does not sound like a newly rebuilt ribbon.
How long ago was it rebuilt, and by who ?
Please post a photo of the rebuilt ribbon
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!
╭∩╮(︶︿︶)╭∩╮
<<

TNRabbit

User avatar

(pair of) SILVER-7 TUBE AMPs

Posts: 13338

Joined: Sun Jan 14, 2007 11:53 am

Location: TN Native Languishing in VA

Post Thu Oct 21, 2010 7:50 pm

Re: Ribbon buzzing

Perhaps the crossover on the low side is partially damaged....also check all your connections, inside the speaker as well.
TNRabbit
Image

From FrankieD's lips to your ears: Sunfire - a quiet box of endless power.

Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
Sony SACD/DVD-A
Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
Main: HotRodded AL-IIIs
Sub: Klipsch RT-12d
Center: Sunfire CRS-3c
Surround: Sunfire CRS-3 (x 2)

OconeeOrange wrote:"Gary likes to play it 'loud' as do I. His system begs you turn it up until you die"

RIP WIlliam B. Dibble, 1948-2012. I'll miss you my friend.
<<

Scarabeo

User avatar

SILVER-7 TUBE AMP

Posts: 2648

Joined: Tue Nov 18, 2008 6:05 pm

Post Fri Oct 22, 2010 2:37 am

Re: Ribbon buzzing

Toy Maker wrote:2db LESS sensitive ?? That does not sound like a newly rebuilt ribbon.
How long ago was it rebuilt, and by who ?
Please post a photo of the rebuilt ribbon


The person I got it from said James S did it and I said "You mean Dave?" and he said - Well those Guys but I could tell (it was redone) :-k I sold him the Ribbon and I can tell you it was 100% redone! not sure how long ago but it was not used and just sat!!! I tested it my self and it was goooooooood!!!

Image
Image
Image
BillD, You will be forever with us! RIP until we meet again on the other side...
<<

ecc6c2

Newbie

Posts: 7

Joined: Sat Sep 18, 2010 4:03 pm

Post Sat Oct 23, 2010 6:50 pm

Re: Ribbon buzzing

Well just when I thought I had all the problems worked out and could finally enjoy the Amazings, I found another buzzing problem with the same speaker when running REW this morning. This time the buzzing is originating from the second woofer from the top and occurs between ~ 200-400 Hz. The foam surround is intact, no loose connections were found on the back of the woofer and there is no scraping between the cone and basket if I gently push in the woofer. The buzzing has more of an electronic sound to it, but I don't know what the source of the buzzing is. Any thoughts on this issues. Thanks for all the help.
<<

Toy Maker

User avatar

Puppet Master

Posts: 6497

Joined: Wed Oct 08, 2003 1:26 am

Post Sat Oct 23, 2010 7:05 pm

Re: Ribbon buzzing

I wanted to see the Kapton...

Image

That ribbon has ALLOT of ripples in the Kapton. Not something you usually see.
That is nor normal, especially for a 30" ribbon. 48" and 60" can sometimes have small ripples or waves in them.
But the 30" ribbons are usually perfectly smooth.
I am curious where he stored the ribbon ?? That looks to me, as it were kept in a VERY humid place.

In a day or 2, I'll post a photo of a 30" ribbon I an rebuilding now, and you can see what they look like when they are freshly rebuilt.

James S.

PS. can you please post a better photo of the kapton, one more in focus.
I want to see the kapton a little better.... it almost looks like someone tried to crinkle the kapton like some of the 48" ribbons came new.
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!
╭∩╮(︶︿︶)╭∩╮
<<

Scarabeo

User avatar

SILVER-7 TUBE AMP

Posts: 2648

Joined: Tue Nov 18, 2008 6:05 pm

Post Sat Oct 23, 2010 8:19 pm

Re: Ribbon buzzing

So by this you are finding other issues in the woofers? (This time the buzzing is originating from the second woofer from the top and occurs between ~ 200-400 Hz)

Here are a few I got before I shipped it. I would be shocked to think someone did this good of a job replacing ribbons other then you :D or even finding the Ribbon film! I have a cheap camera and bad focus but look at these..
Image
Image
Image
BillD, You will be forever with us! RIP until we meet again on the other side...
<<

Toy Maker

User avatar

Puppet Master

Posts: 6497

Joined: Wed Oct 08, 2003 1:26 am

Post Sat Oct 23, 2010 10:41 pm

Re: Ribbon buzzing

It's just weird there are so many waves in the ribbon... That is not normal.

No clue about the woofers.
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!
╭∩╮(︶︿︶)╭∩╮
<<

TNRabbit

User avatar

(pair of) SILVER-7 TUBE AMPs

Posts: 13338

Joined: Sun Jan 14, 2007 11:53 am

Location: TN Native Languishing in VA

Post Sun Oct 24, 2010 8:37 pm

Re: Ribbon buzzing

The woofers crossover to the ribbon @ 150 hz, so I can't imagine why you would be getting a buzz at 200-400 hz....
TNRabbit
Image

From FrankieD's lips to your ears: Sunfire - a quiet box of endless power.

Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
Sony SACD/DVD-A
Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
Main: HotRodded AL-IIIs
Sub: Klipsch RT-12d
Center: Sunfire CRS-3c
Surround: Sunfire CRS-3 (x 2)

OconeeOrange wrote:"Gary likes to play it 'loud' as do I. His system begs you turn it up until you die"

RIP WIlliam B. Dibble, 1948-2012. I'll miss you my friend.
Previous

Return to Carver Speakers

Who is online

Users browsing this forum: No registered users and 2 guests

Powered by phpBB © 2011 phpBB Group.