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Vintage GE Tube Amp
Vintage GE Tube Amp
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Old 24th June 2012, 07:20 PM   #11
geraldfryjr is offline geraldfryjr  United States
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You might get about 96db at 5 watts.

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Old 2nd July 2012, 11:48 PM   #12
CowboyNeal is offline CowboyNeal  United States
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So I haven't seen any output connectors like these. What kind of cables do I need for them?
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Old 3rd July 2012, 12:21 AM   #13
FullRangeMan is offline FullRangeMan  Brazil
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The speaker connector are for bare wire, you had to press and insert the wire in the hole in the post.
For 5 to 10W the output tube will be happy with a 100dB sensitivity, as Klipsch RF83, RF63(99dB) or CF-4(102dB) all these 3 amigos speakers are out of the line tought.

A better option is a sole fullrange driver, also with hi sensitivity and direct(no crossover) as any crossover consume energy/power.
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Old 3rd July 2012, 12:38 AM   #14
kevinkr is offline kevinkr  United States
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Vintage GE Tube Amp
Originally Posted by geraldfryjr View Post
You might get about 96db at 5 watts.

Jer has a point, and I suspect that it will not be a very clean sounding 96dB either..

A much more efficient speaker is warranted, and something in the higher 90s at least. Something around 100dB as pointed out would be near ideal, but speaker systems offering this sort of efficiency are going to be large. (I have a pair of Onkens which are over 100dB and have combined cabinet and vent volumes of ~11 cu ft each.) Something like the original Klipsch Heresy might be a decent match - then expect to have to upgrade the output transformers.

Might be quite decent for background level music with the current speakers depending on how benign a load they reflect to the amplifier.. Try it and see.
"To argue with a person who has renounced the use of reason is like administering medicine to the dead." - Thomas Paine
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Old 3rd July 2012, 04:49 PM   #15
CowboyNeal is offline CowboyNeal  United States
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Yea I'm not gonna need super high volumes as this system will be used in a relatively small dorm room. I also got some Mission 717s for free which i think are supposed to be around 91 db sensitivity so I'll try those too. Anyone have experience with these? Also planning on getting either the Musical Fidelity V-LPS or the Cambridge 540p for a preamp. Any suggestions?
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Old 20th March 2013, 01:54 PM   #16
tomekskrzypce is offline tomekskrzypce
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im pay Ge I 721 is mexican amp 1963. made in mexico
im need diangram schematic 2xel84 1x 12ax7 and rectifier 5Y3
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