Heathkit A-9 C User Manual
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Clearing out more of my projects. I'm listing these here before I put them up on Ebay. I have one Heathkit A-9 and one Heathkit A-9C amplifiers for sale. I had originally planned on rebuilding these, but work related stuff is going to prevent me from spending any serious time on DIY for at least the next 6-12 months.
AFAIK, these are 20 watt push-pull amplifiers based around a pair of 6L6 tubes. The gain stages/tone controls/phase splitters use 12AU7's, and I believe the phono input uses a 12AX7. Rectification is provided by a 5V4(C?).
I do not know the working condition of either of these amplifiers. I don't have a variac, so I haven't fired them up.
They each include a full tube compliment and are physically in pretty good condition. There are some paint chips on the transformers and some small rust spots on the chassis, but overall they look nice. The A-9C has knobs, but the A-9 does not.
Physically, they appear to be identical to each other, except that the A-9C has a pilot light on the front. Finally, I also have the original assembly manual + schematic for the A-9C, and I believe I have a printed version of the manual for the A-9 around here somewhere.
More details can be found at:
http://www.heathkit-museum.com/hifi/a-9c.shtml
Online schematic:
http://www.heathkit-museum.com/hifi/images/a-9cs.gif
These are heavy, please take that into consideration if you would like them shipped. I'm based out of Seattle, and these are available for local pickup.
I hope someone is willing to try and give these beasts the TLC they need to make them sing again!
I'll try to post pictures of them later today if I have time.
I can be e-mailed at:
m ik e a t m o th e r o n e d a wt c o m
AFAIK, these are 20 watt push-pull amplifiers based around a pair of 6L6 tubes. The gain stages/tone controls/phase splitters use 12AU7's, and I believe the phono input uses a 12AX7. Rectification is provided by a 5V4(C?).
I do not know the working condition of either of these amplifiers. I don't have a variac, so I haven't fired them up.
They each include a full tube compliment and are physically in pretty good condition. There are some paint chips on the transformers and some small rust spots on the chassis, but overall they look nice. The A-9C has knobs, but the A-9 does not.
Physically, they appear to be identical to each other, except that the A-9C has a pilot light on the front. Finally, I also have the original assembly manual + schematic for the A-9C, and I believe I have a printed version of the manual for the A-9 around here somewhere.
More details can be found at:
http://www.heathkit-museum.com/hifi/a-9c.shtml
Online schematic:
http://www.heathkit-museum.com/hifi/images/a-9cs.gif
These are heavy, please take that into consideration if you would like them shipped. I'm based out of Seattle, and these are available for local pickup.
I hope someone is willing to try and give these beasts the TLC they need to make them sing again!
I'll try to post pictures of them later today if I have time.
I can be e-mailed at:
m ik e a t m o th e r o n e d a wt c o m
I am looking for a Heathkit model A-9 assembly instructions manual. If anyone has one please let me know thanks very much, Jim. In 300 series user manual. QTH.com Free Ham Radio Classified Ads from QTH.COM. The biggest and best ham radio classifieds on the web! Buy, sell, trade HF and VHF equipment, towers, antennas, rotators and more!
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