Let's See Your Great JVC Gear!
- Thread starter GD70
- Start date
I don't think they were using the same serial number scheme then..
06 = Jan
5 =1970???
Member ELzekio cracked the code and it seems corrct for every JVC component I own. None of mine are that old though.
The first 3 digits are the date code.
The first two numbers are the month :
10 = May
11 = Jun
12 = Jul
13 = Aug
14 = Sep
15 = Oct
16 = Nov
17 = Dec
06 = Jan
07 = Feb
08 = Mar
09 = Apr
The third number is the year:
0 = 5
1 = 6
2 = 7
3 = 8
4 = 9
5 = 0
6 = 1
7 = 2
8 = 3
9 = 4
06 = Jan
5 =1970???
Member ELzekio cracked the code and it seems corrct for every JVC component I own. None of mine are that old though.
The first 3 digits are the date code.
The first two numbers are the month :
10 = May
11 = Jun
12 = Jul
13 = Aug
14 = Sep
15 = Oct
16 = Nov
17 = Dec
06 = Jan
07 = Feb
08 = Mar
09 = Apr
The third number is the year:
0 = 5
1 = 6
2 = 7
3 = 8
4 = 9
5 = 0
6 = 1
7 = 2
8 = 3
9 = 4
Byron Boldt
Active Member
Thanks. I just finished restoring my KLH 23s. Will post some pics in your thread.
from a 1975 jvc catalog:
note it says : 20watts of power into 4 ohm. does not say per channel. the pic desc. says 11w/ch rms @1khz but does not list ohm.
i am making the call that my unit is fine.
prior to 75 there was a unit called the vr5505l that had a longwave tuner as well.
here are archived jvc catalogs:
Cola TV - Trực Tiếp Bóng đá World Cup 2026 - Xem TTBD HD
ColaTV phát trực tiếp bóng đá chất lượng cao, không giật lag. Xem bóng đá trực tuyến miễn phí tại Cola TV cùng đội ngũ BLV chuyên môn cao.
www.hifi-archiv.info
thanks for the motivation on getting a definitive date
now back to cleaning the shop.
Maybe the 5 is actually 1975 and they changed it later. My oldest JVC is from 1982 and that date system ELzekio came up with works for everything I have. You can verify on CD players because they have the date and month on the label with the serial number. That's a nice looking basic receiver. It probably won't fill a stadium with sound but would probably play loud enough to fill a room with efficient speakers.thanks for the motivation on getting a definitive date
yeah, maybe june 1975.
10 watts at 4 ohms would be about 5 maybe 6 watts RMS at 8 ohms, looks like some math is off the mark. Honestly I'd say its capable of 10 watts RMS into 8 ohms both channels driven with good caps on a 1 KHz sinewave.
Byron Boldt
Active Member
This comes from the 1975 Stereo Review Buyer's Guide that was probably released late 1974 or early 1975.from a 1975 jvc catalog:
View attachment 3211832
note it says : 20watts of power into 4 ohm. does not say per channel. the pic desc. says 11w/ch rms @1khz but does not list ohm.
i am making the call that my unit is fine.
prior to 75 there was a unit called the vr5505l that had a longwave tuner as well.
here are archived jvc catalogs:
Cola TV - Trực Tiếp Bóng đá World Cup 2026 - Xem TTBD HD
ColaTV phát trực tiếp bóng đá chất lượng cao, không giật lag. Xem bóng đá trực tuyến miễn phí tại Cola TV cùng đội ngũ BLV chuyên môn cao.www.hifi-archiv.info
thanks for the motivation on getting a definitive date
now back to cleaning the shop.
it is not
well i'll be! thanks.
yes it is and i'm down around .13%thd vs. 1%.
just finished recapping the unit and did a slight tweak to the tuner.
bulbs will be here this week.
i spent more time researching than repairing. i might have spent more time researching than i did on the actual unit itself.
thanks to all who played along at home.
Sure has a lot of iron up front for less than 10 watts/channel
Byron Boldt
Active Member
I finally have a dummy load so I decided to measure mine. I came up with about 9.8 W per channel at 1KHz. Not sure how accurate that is since this was my first time. I can't measure THD.
GD70
Lunatic Member
Holy crap!
GD70
Lunatic Member
Hell of a gift! Looks very clean!