Kit 6550 integrated instruction manual

[NeilMC]

Can anyone supply me with the build manual for the WAD Kit 6550 integrated amp? I have recently retrieved a partly built amp from the attic, but have not been able to find the original construction plans.

[Wieslaw Lipowski]

Here you are

I've also got the upgrading notes reg. WAD Kit6550, but can't upload them as the file is too large. I can send it at your email address, though.

[Richard]

Hi both and welcome Neil,

It's worth noting the 6550 cathode resistors R35/35/37/38 were increased from 500R on that original build sheet to 680R to lower plate dissipation as shown in the Jan 2002 upgrade article. You may find either in yours Neil depending on when it was supplied but may want to fit 680R to save the valves.

[NeilMC]

Thanks for your help guys. As soon as I know how, I will get my email address to you Wieslaw for a copy of the upgrading notes. Are these the build instructions?

[Wieslaw Lipowski]

Originally Posted by NeilMC

Thanks for your help guys. As soon as I know how, I will get my email address to you Wieslaw for a copy of the upgrading notes. Are these the build instructions?

I may have the instructions in print, I'll try to look them up soon and make scans.

Here are some of the notes reg. upgrading:

"KiT6550 basic version
This amplifier has fine control of bass, concentrating
on an infectious mixture of rhythm and
detail. 'Underdog' by Turin Brakes, with its
copious acoustic guitar strumming sounded
warm and lucid, with the male vocals clear.
Bass drum had a nice sharp 'thud' to it and
treble was open and detailed.
KiT6550 with Alps potentiometer
The Alps pot added more bass response to
the bottom-end and pushed the bass drum
further back, and vocals further to the front
of the sound stage. Imaging improved, too,
with the accompanying guitar strumming more
intricate on either side of the picture.
KiT 6550 with Alps potentiometer
and Black Gate capacitors
The Japanese Black Gates, with their innate
smoothness of sound, made the vocals richer
and warmed up the guitar timbre. The sound
was also slightly fuller bodied, creating a
'fatter' image through the 'speakers which
added more involvement to the music.
KiT6550 with Alps Potentiometer,
Black Gate and Jensen capacitors
The Full Monty upgrade resulted in a very
involving sound, with a high degree of detail
and a full and exact sound stage. Imaging was
greatly improved and the mix became wholly
cohesive and communicative. Upper band
detail was excellent and the bass very tuneful
and taut."

[Wieslaw Lipowski]

Yes, I have found it. October 2001, HiFi World DiY Supplement, pages 6 to 11. Part I

[bob orbell]

Hi Neal, Wiesiek, I have the complete build instructions on paper for the KAT 6550, that I could copy and post to Neal if you have any problems Wiesiek. BOB

[Wieslaw Lipowski]

Originally Posted by bob orbell

Hi Neal, Wiesiek, I have the complete build instructions on paper for the KAT 6550, that I could copy and post to Neal if you have any problems Wiesiek. BOB

I have only the October part I, scanned from the magazine, so please do. Regards

[bob orbell]

OK Wiesiek, I will sort that. BOB

[bob orbell]

Hi Neil, I have now printed the full build instructions for the KAT6550, the only difference is the KAT is single input with no volume control. If you PM me with your full address I will post to you, please do not post your address on this post as it is not private, the PM is. BOB