| Author |
Message |
    
Wheelco505
Member
Username: Wheelco505
Post Number: 57
Registered: 12-2004
| | Posted on Tuesday, May 02, 2006 - 8:11 pm: | 
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i looked up the specs on the 455 trans.(input)it said 3 watts.i got a 2 pill driver.does that mean 3 watts a pill is that okay?? and how much can i expect rms and peak??(the max) 505 |
Audiophile73
Member
Username: Audiophile73
Post Number: 99
Registered: 5-2004
| | Posted on Tuesday, May 02, 2006 - 11:22 pm: |
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What is the amplifier you have? I am personally not a big fan of those transistors. Usually you will set up your system to key 1/4 of its output. So if your amplifiers says it will do 400 watts you key 100. I would start with two watts dead key and work up from there. |
Wheelco505
Member
Username: Wheelco505
Post Number: 58
Registered: 12-2004
| | Posted on Wednesday, May 03, 2006 - 11:19 am: |
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i'am not a large fan either but,but i needed a driver and a buddy of mine needed money. so it was a trade off.it has big transformers in it.i firgured it was a fair driver.(audio wise)what about them that you don't like??fess up. 505 |
Audiophile73
Intermediate Member
Username: Audiophile73
Post Number: 101
Registered: 5-2004
| | Posted on Thursday, May 04, 2006 - 2:27 pm: |
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I just don't like the gain. The less gain the less output. Usually in rf transistord gain is rated in decibels. I really like the toshiba 2sc2879, and 2290's. They offer the best gain, and they can be biased for class a, ab. or c. Where as the mrf455 and sd1446 are class C. There not bad by any means, if your just talking AM it should not be a problem. Good luck to ya. |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2812
Registered: 7-2004
| | Posted on Friday, May 05, 2006 - 4:27 pm: |
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wheelco, turn the radio dead key WAY down, then turn on amp, key up & adjust radio output til amp dead keys about 30 watts. give it some audio & if it swings around 100-120, you're good.  |
Hotwire
Senior Member
Username: Hotwire
Post Number: 1308
Registered: 1-2005
| | Posted on Saturday, May 06, 2006 - 10:37 am: |
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So 1446 pills are class C only? I always thought it was the way an amp is built. I used a 2 pill 1446 amp for a few years with SSB with no problems. Maybe that was why I sounded overdriven to some? It was an auto SSB amp. Now that I think about it......all the best SSB amps I know of contain the Toshiba pills. |
Bruce
Senior Member
Username: Bruce
Post Number: 3811
Registered: 9-2003
| | Posted on Sunday, May 07, 2006 - 5:18 am: |
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Hotwire ....
I run 4 1446's class C for 10 meter fm but ANY transistor can run ANY mode but you will not have the range of drive input on a class c that a linear device will have ..... |
Hotwire
Senior Member
Username: Hotwire
Post Number: 1318
Registered: 1-2005
| | Posted on Sunday, May 07, 2006 - 1:42 pm: |
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Ok, thanks Bruce. |
