The original type blower used in the Pride DXD300 was discontinued decades ago. Howard Industries exited the blower business, and nobody ever copied or licensed the plastic-body design as a second source.
The original-type blower I used to rebuild this amplifier sounded okay for about the first half hour, and would develop a rattle once warmed up. Some things just don't last 48 years. Decided that selling this thing with a noisy blower would become a headache. The replacement just fits.
Even if it still has the factory-original transformers it will fit with very little room to spare.
The original bayonet socket will need the rivets drilled out so it can be removed.
Somebody had already gouged the opening under the blower in this one. A hand nibbler would open it up enough without too much effort. You don't want to block too much of the blower's throat.
The fender washers should make the mounting rigid enough to survive being shipped. The rearmost washer had to be trimmed to clear the rear panel. We would remove the old plastic blower and lash it to the deck with fiberglass strapping tape. Leaving it in place would cause it to pop loose and thrash around in transit, breaking things. Learned that one the hard way. Fortunately it was someone else who had packed it to ship with the plastic blower installed in its socket. Nylon locking nuts are probably more than just a good idea. This blower seems to be well balanced, but making sure the blower's mounting screws don't come loose is a big deal.
The Dayton 1TDN1 is not the only source for this blower. Amazon has one made in Taiwan that's a bit cheaper.
It's no surprise that a blower made in 1977 or '78 has to be replaced. At least there's a way to do it without an act of congress.
73
The original-type blower I used to rebuild this amplifier sounded okay for about the first half hour, and would develop a rattle once warmed up. Some things just don't last 48 years. Decided that selling this thing with a noisy blower would become a headache. The replacement just fits.
Even if it still has the factory-original transformers it will fit with very little room to spare.
The original bayonet socket will need the rivets drilled out so it can be removed.
Somebody had already gouged the opening under the blower in this one. A hand nibbler would open it up enough without too much effort. You don't want to block too much of the blower's throat.
The fender washers should make the mounting rigid enough to survive being shipped. The rearmost washer had to be trimmed to clear the rear panel. We would remove the old plastic blower and lash it to the deck with fiberglass strapping tape. Leaving it in place would cause it to pop loose and thrash around in transit, breaking things. Learned that one the hard way. Fortunately it was someone else who had packed it to ship with the plastic blower installed in its socket. Nylon locking nuts are probably more than just a good idea. This blower seems to be well balanced, but making sure the blower's mounting screws don't come loose is a big deal.
The Dayton 1TDN1 is not the only source for this blower. Amazon has one made in Taiwan that's a bit cheaper.
It's no surprise that a blower made in 1977 or '78 has to be replaced. At least there's a way to do it without an act of congress.
73
