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ampage archive
Vintage threads from the first ten years
7591 tubes...
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 9/5/1999 10:10 PM |
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David Manson |
7591 tubes... are there any 50/100 watt heads -- power amps that use these tubes? without mods.. |
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| 9/6/1999 3:35 AM |
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| Trace |
Umm...I think there are a couple Ampeg models that used these but I'm not 100% sure. I don't have a many of Ampeg schematics (wish I did) Anyone know for sure?? Trace |
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| 9/6/1999 4:29 AM |
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| Scott |
don't quote me, but i think 7591's were used in low power amps(20-40 watts). i have two ampeg gemini I's...both use 7591's. i have never come across another manufacturer that uses that tube. |
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| 9/15/1999 2:43 AM |
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| Uncle Ned |
are there any 50/100 watt heads -- power amps that use these tubes? without mods.. Biggest amp I ever saw with 7591 was a 35W/channel stereo amp. The book says 7591 can put out up to 45W/pair, but I've never seen an amp with them that claimed 45W. 7591's big brother 8417, OTOH, was frequently used for 100 to 150W power amps. |
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| 9/15/1999 1:14 PM |
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| Farrow |
I've got one... I have a "TITANO" accordian amp with (of all things) a QUARTET of 7591As. They are run in fixed bias (-22V on one pair and -25V on the other) in stereo with 460V on the plates. I measured 45W on the "Bass" amp (into an 8ohm load) and 38W on the "Treble." This amp is as loud as (but not as piercing) as my '72 Twin (conv. to blackface.) NOONE has ever seen an amp like this... Anybody ever heard of Audio Guild Corp.? Farrow http://surf.to/pharaohamps |
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| 9/15/1999 6:41 PM |
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| martin potucek |
Re: 7591 tubes... my mid 60's ampeg reverbrocket 2 has em. the ampeg jets have em too... also old fisher 500 stereos... these are, however 30-40 watt combos (except the fisher) mp |
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