Selling 4 very rare, new-in-box Chicago BOH-10 OPTs. These are the mil-spec version of the BO-10, which is a 20K:600/150 push-pull tube output transformer rated at +15 dBm. The only difference between the BOH and BO models is that the mil-spec H version has more hum shielding. They are marked as 30-15k frequency response, but that's only because the US military had strict requirements that manufacturers had to adhere to. As stated in the catalog, they are "electrically identical" to the BO versions, which are rated at 30-20k. They have M6 steel cores.
These are perfect for a PP 12AU7, 6C4, 6C5 or similar output stage. Plenty of designs out there.
Chicago BO series transformers are excellent vintage iron and the common models are getting rare as hen's teeth. The BO-10 is even less common than the BO-1 and BO-2 are, so I doubt you'll see these anywhere again. Especially new and in multiples.
I'd like to sell the whole lot or in pairs, but will sell singles if it comes to that.
$180 each.
These are perfect for a PP 12AU7, 6C4, 6C5 or similar output stage. Plenty of designs out there.
Chicago BO series transformers are excellent vintage iron and the common models are getting rare as hen's teeth. The BO-10 is even less common than the BO-1 and BO-2 are, so I doubt you'll see these anywhere again. Especially new and in multiples.
I'd like to sell the whole lot or in pairs, but will sell singles if it comes to that.
$180 each.
