What’s in this amplifier?

Katapum · 22nd January 2006, 10:01 AM

Hi all,

Six years ago I bought a PP amplifier (I think it’s a Chinese kit with local name something like A. Valve Company)). Not bad but my diy SE sounds much better.

Now I’d to upgrade my PP amp. I think I have two options: rebuild the entire amp or upgrade some parts (no schematic).

Some technical details I collected:
Intergraded dual mono amplifier
Push-Pull
Output power: 40W (8 Ohm)
4x EL34 (Ia=38mA; Ua=430V; Vg1=-36V; Vg=440V)
2x ECC83 ???
2X ECC82 ??? (7025 Chelmer Valve)
F.R.: 30Hz-60kHz
S/N: >90dB
Input impedance: 100k

Where can I find his schematic? What to do with this amp?

Any comments or suggestions are very welcome.

PS: at moment I don´t have the amp in my home.

Katapum

Katapum · 22nd January 2006, 10:07 AM

Photo 2

Katapum · 22nd January 2006, 10:19 AM

Photo 3

Tube_Dude · 22nd January 2006, 10:34 AM

Quote:

Originally posted by Katapum

Any comments or suggestions are very welcome.

Hi Katapum

What about a inside pic?...The outside don't tell much about the amplifier topology . ..

Katapum · 22nd January 2006, 11:58 AM

Hi,

Quote:

PS: at moment I don´t have the amp in my home.

Quote:

What about a inside pic?...

Look at Massama place.

Katapum

Katapum · 22nd January 2006, 12:07 PM

Hi,

I only found this in a web:

Katapum

Katapum · 22nd January 2006, 06:02 PM

Hi all,

Could it be a “Jolida 302”?

Katapum

jo-briggs · 22nd January 2006, 07:44 PM

The styling looks more like a Ming Da, Meixing or an Icon Audio version of the Ming Da. It's not a Yaqin, Shanling or Jolida 302.

Katapum · 22nd January 2006, 11:20 PM

Hi,

Quote:

The styling looks more like a Ming Da, Meixing or an Icon Audio version of the Ming Da. It's not a Yaqin, Shanling or Jolida 302.

or

http://cgi.ebay.co.uk/2-SILVER-MICA-...QQcmdZViewItem

or

http://cgi.ebay.co.uk/LATEST-2006-EL...QQcmdZViewItem

Katapum

Katapum · 23rd January 2006, 10:15 PM

Please!!!

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22nd January 2006, 06:02 PM	#7
Katapum diyAudio Member Join Date: Mar 2003 Location: Europe	Hi all, Could it be a “Jolida 302”? Katapum

22nd January 2006, 07:44 PM	#8
jo-briggs diyAudio Member Join Date: Oct 2004	The styling looks more like a Ming Da, Meixing or an Icon Audio version of the Ming Da. It's not a Yaqin, Shanling or Jolida 302.

23rd January 2006, 10:15 PM	#10
Katapum diyAudio Member Join Date: Mar 2003 Location: Europe	Please!!!

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