I have a old altec 7 channel amp that uses amp cards like a pc does for video cards
It’s a beast of a amp
I will take some pics
My question is this, could I use (or sell )the power transformer and use it for a tube amp? ? This amp is from the 70’ or 80’ and was used for the house system at the New Orleans Superdome up until about the time that the hurricane took out New Orleans and the replaced the sound systems in the dome
It’s a beast of a amp
I will take some pics
My question is this, could I use (or sell )the power transformer and use it for a tube amp? ? This amp is from the 70’ or 80’ and was used for the house system at the New Orleans Superdome up until about the time that the hurricane took out New Orleans and the replaced the sound systems in the dome
No, the voltage will be way too low, and no filament windings.
I'd just sell the whole thing as-is on ebay.
I'd just sell the whole thing as-is on ebay.
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> I will take some pics
Or a model number, easier.
I can't place an Altec 7-card power amp, though I don't have all the Commercial and Large Project offerings memorized.
But sight unseen I'm sure Rayma is right. +/-50V at 14 Amps is not at all right for "a tube amp".
Or a model number, easier.
I can't place an Altec 7-card power amp, though I don't have all the Commercial and Large Project offerings memorized.
But sight unseen I'm sure Rayma is right. +/-50V at 14 Amps is not at all right for "a tube amp".
Guys I’ll get some pics today. Been under the weather the last few days and have my sons down from Alabama for a week or so
I had to quickly pack my spare room / diy room for them to stay. So a lot of my audio stuff is stuffed into and under and empty place I could find. Lol
I had to quickly pack my spare room / diy room for them to stay. So a lot of my audio stuff is stuffed into and under and empty place I could find. Lol
Nice sandals.
Seriously: a model number would have been ample. Times are uncertain. Be with your family!!
"Altec Lansing 2280B Amp"
Images on eBay. Good details on HiFiEngine.
Altec Lansing 2280B - Manual - Multichannel Incremental Power System - HiFi Engine
+/-120V at 5 Amps. Each module drives 70.7V into 64 Ohms. Eight modules can be paralleled(!) to do 625 Watts in one 8 ohm load.
Trivial rejiggering would give single 240VDC supply. Good for a pair of 6V6 at 0.1A for about 8 Watts. Thinking modular you could power fifty such amps. You would need yet another transformer for heaters.
Some re-arrangement would give 480V at 2.5A, 2,500mA. Maybe ten pair EL34. Still need a heater transformer. (or maybe...nah...)
Crystal conducts a thousand times better than vacuum. The V/I ratio of a sand-state power amp is way-way off what a tube amp needs.
Seriously: a model number would have been ample. Times are uncertain. Be with your family!!
"Altec Lansing 2280B Amp"
Images on eBay. Good details on HiFiEngine.
Altec Lansing 2280B - Manual - Multichannel Incremental Power System - HiFi Engine
+/-120V at 5 Amps. Each module drives 70.7V into 64 Ohms. Eight modules can be paralleled(!) to do 625 Watts in one 8 ohm load.
Trivial rejiggering would give single 240VDC supply. Good for a pair of 6V6 at 0.1A for about 8 Watts. Thinking modular you could power fifty such amps. You would need yet another transformer for heaters.
Some re-arrangement would give 480V at 2.5A, 2,500mA. Maybe ten pair EL34. Still need a heater transformer. (or maybe...nah...)
Crystal conducts a thousand times better than vacuum. The V/I ratio of a sand-state power amp is way-way off what a tube amp needs.
Just looking at the size of the transformer I’d say it’s not good for more than 600 VA continuously. That would be about right for a 625 watt commercial power amplifier. Just voltage double to 480V, and build a nice EL34/6550/KT88 stereo amp. Or use sweep tubes. Nobody says you have to use the full VA rating, but it is large enough to get maybe 150 watts per channel. You will need output iron on the low-ish R a-a side - think 2k or less ohms. Or higher, if you don’t need/want that much power. For heaters you can always use a switchmode supply, putting pairs of heaters in series for 12 volts. Those low voltage high current switchers are often rated for continuous duty.