Dubuque, IA Free Moderated Classifieds Site > OLD ADS FROM PREVIOUS YEARS
> 2009
> April
> 1 pair hammond line level transformer for tube amp
1 pair hammond line level transformer for tube amp
- Quantity : 1 pair(Two transformers)
- Origin : Hammond mfg, Canada
- Condition : Used Old Stock(Used for Royal Canadian Airforce Electronic equipment), some scratches on the case, the paint is slightly taken off, tape stain is stuck on some part of the case
- Wire configuration : 3 primary wires(including CT), 2 and 2 secondary wires
- Structure : Enclosed in molded case, Black
- Impedance and Inductance : Not specified on the case. We tested impedance with digital impedance meter(test condition : primary center tap is not used, 4 secondary wires are configured to CT tap)
* 5k : 5k @ 120Hz, 1.5H(no load to secondary side)
* 52k : 52 k @1kHz, 1.06H(no load to secondary side)
* 4.47k : 4.47k @1kHz, 318mH(4.7k OHM Load to secondary side)
- Frequency response : Tested with professional audio analyzer Panasonic VP-7723A @ 0dB = 1kHz, source impedance = 600 ohm
with 1k ohm load to secondary side : 30Hz(-2.8dB), 50Hz(-1.5dB), 10kHz(-1 dB), 20kHz(-3.2dB)
with 4.7k ohm load to secondary side : 30Hz(-3.4dB), 50Hz(-1.5dB), 10kHz(-0.1 dB), 20kHz(-0.15dB), 100kHz(-0.25dB)
- Application : input/output matching, small signal isolation, digital noise filtering, balance from/to unbalance converting, drive to power stage matching(No current information)
- size / weight : 51.25*58.1*78.05mm / 800g
