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FDP Forum / Fender Amps: Vintage (before 1985) / '64 Blackface Champ/Flabby Lows/Dull Highs

jillfen

cuyahoga falls, OH

Aug 24th, 2018 08:31 PM   Edit   Profile  

Hi folks, my problem is as described in the topic. Have a '64 BF Champ. Just changed tired old Oxford speaker to a new Weber Sig 8 ceramic and still have (to my ears) low volume, flabby lows and dull highs. So where do I go from here?

pcalu

usa Thumb area Mi

Aug 25th, 2018 07:53 AM   Edit   Profile  

Not Webers...

I'd gone with the SICA/Jensen RI C8R. The Bass response is very tight with this speaker, mids are that classic American aggressive tone and the top end is bright.

IMHO What really sets the Sica/Jensen Ris apart from Webers or WGS or Jupiters... etc Are the vintage low-efficiency ratings of the speakers.

The low efficiency and sensitivity of a SICA/Jensen RI C8R are 93dbs which allows you to crank that Champ up to saturation level without it being over the top loud.

IMO... All T Weber did was take a vintage Jensen design and power it up. Putting a bigger magnet on it and then telling people his speakers were the more authentic and better made than Sica/Jensen.

IMO from my experience.. a lot of Webers IMO don't break up when they should.. compared to a vintage Jensen or Oxford and are much stiffer and brighter than Sica/Jensen Ri or vintage Jensen and Oxfords. And most of the WGS/Jupiter (made by the same people) often are too dark for me. (as IMO what you are experiencing...

Finally.. what are you doing with this Champ? Are you playing Metal or Hard Rock with it? If so... an American voiced speaker might not be what your ears want to hear..

BbendFender
Contributing Member
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American Patriot

About as ordinary as you can get.
Aug 25th, 2018 08:51 AM   Edit   Profile  

Have you replaced the old caps? That might be your problem.

Peegoo
Contributing Member
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The man

in the shed
Aug 25th, 2018 08:02 PM   Edit   Profile  

Yep.

Start with the tubes: swap in some known good tubes.

Next it's power section caps and coupling caps.

The number one reason for tired and lifeless-sounding amps is drifted caps.

Speaker comes last.

pcalu

usa Thumb area Mi

Aug 26th, 2018 09:09 AM   Edit   Profile  

Isn't re-capping and replacing tubes first a NO Brainer...

oh wait this is the internet.. my bad

(This message was last edited by pcalu at 11:09 AM, Aug 26th, 2018)

Leftee
Contributing Member
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VA

Aug 26th, 2018 10:18 AM   Edit   Profile  

It's not a no-brainer if someone isn't versed in the technical aspects of amplification.

That's in part, why this place exists. To help such folks out.

pcalu

usa Thumb area Mi

Aug 26th, 2018 03:02 PM   Edit   Profile  

guy plunks down a wad of cash.. for a ...um what was is?

Oh, a 55+ yr old Blackface Champ.. buys a Weber speaker (shows he surfs the internet.. due to the current trends in speakers...) and you think he might not know that the amp might need a re-cap?

ok.. sure



Peegoo
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Head down, ears back

Headed for the bar
Sep 4th, 2018 05:32 AM   Edit   Profile  

Whoa there, Hoss. We're not judging anyone here.

We're just starting with the simple/most common issues and working toward the complex/less common issues.

If you don't understand that, you're in the wrong place.

BbendFender
Contributing Member
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American Patriot

About as ordinary as you can get.
Sep 4th, 2018 11:19 AM   Edit   Profile  

I agree Peegoo. We are all still learning.

Silverface

Lawndale CA

No Chops but Great Tone ©
Sep 7th, 2018 09:40 PM   Edit   Profile  

With the number of vintage Fender amps I have serviced over the years I can tell you very few owners have any idea tube amps need regular service every 15 years or so. Most players don't hang out on forums or read tech articles in guitar magazines, and manufacturers don't mention it in any literature.

FDP Forum / Fender Amps: Vintage (before 1985) / '64 Blackface Champ/Flabby Lows/Dull Highs




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