Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: astronomicum on January 21, 2025, 04:31:03 pm

Title: Capacitor Manufacturer Identification
Post by: astronomicum on January 21, 2025, 04:31:03 pm
Can anyone tell me who the manufacturer of these capacitors are? No luck finding any info on these. The amp they are in is an Excelsior C-10, made in Japan, early 60s. Thanks.
Title: Re: Capacitor Manufacturer Identification
Post by: shooter on January 21, 2025, 05:28:04 pm
curiosity kills cats  :icon_biggrin:


Japan of the 60-70's was a self contained power house in everything "consumer electronics" so they made the pieces parts, designed the boxes, sold to the masses.
so ask all-knowing glass; "images of Japanese capacitor factories of the 1960s"
Title: Re: Capacitor Manufacturer Identification
Post by: astronomicum on January 21, 2025, 05:55:52 pm
Spent quite a bit of time and over a dozen searches before posting. I will keep at it. Hoping someone would recognize the logo. Thanks anyway.
Title: Re: Capacitor Manufacturer Identification
Post by: Willabe on January 21, 2025, 06:08:14 pm
Why do you want to know who made those e caps?
Title: Re: Capacitor Manufacturer Identification
Post by: astronomicum on January 22, 2025, 12:24:10 pm
The manufacturer in question also made the oil caps used in this amp. Unlike the Atlas caps with rubber seals used by Univox (this amp being an earlier model of the Univox 102) which are nearly always bad, I have found that these of this construction are not. These are made with ceramic cylinders with soldered end caps and I have yet to find a bad one. I have come across these in pioneer equipment as well made by Suzuki. This is not a Suzuki logo however. So it would be nice to put a name these caps so they can be differentiated from Atlas.
Title: Re: Capacitor Manufacturer Identification
Post by: Willabe on January 22, 2025, 03:09:07 pm
So it would be nice to put a name these caps so they can be differentiated from Atlas.

Why?

Their 65 year old caps, that weren't very common.

You already know they are differentiated from Atlas by their construction.
Title: Re: Capacitor Manufacturer Identification
Post by: Calboy on January 22, 2025, 03:10:55 pm
Matsushita?
Title: Re: Capacitor Manufacturer Identification
Post by: astronomicum on January 22, 2025, 03:20:34 pm
Matsushita?
Thanks for constructive input. Not the same logo however. The Matsushita logo is a triangular shape. The best I can derive from the logo print is "FLTIR".