ampeg build
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ampeg build
I am planning a amp for my bass playing bro-law he says ampeg portaflex we wanna run 6550 not 7868 but first I need chassis size anyone have one of these that could measure it out for me? thanks mark
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Re: ampeg build
The cab and speaker are a big part of the sound, if your plan is to just build a head you may be disappointed. But you might get lucky and find something good to plug it into - or already know of something good.
You know about?
http://www.fliptops.net/
No experience and I've no idea how close to the real thing their parts actually get you.
You know about?
http://www.fliptops.net/
No experience and I've no idea how close to the real thing their parts actually get you.
Re: ampeg build
He has a earth cab he wants to try not real sure on that yet
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Stevem
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Re: ampeg build
I will dig out and measure up my B15NF for you tonight, I have not plugged her in for a while and the caps need that anyway!
You might want to scan the flip tops web site!
You might want to scan the flip tops web site!
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
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martin manning
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Re: ampeg build
Lots of good info here: http://ctgelectronics.weebly.com/custom ... -51-b.html
Re: ampeg build
Thanks Martin, that was fun. What are the strange copper plates the guy stuck on the diodes in this image?martin manning wrote:Lots of good info here: http://ctgelectronics.weebly.com/custom ... -51-b.html
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martin manning
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Re: ampeg build
Heat sinks I suppose. I wonder if any experimentation was done to determine that the best configuration is to put them on the cathode end only?
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dorrisant
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Re: ampeg build
Maybe just for a quick polarity check... I have heard of people doing this with pennies. Probably older, real copper pennies though. Seems like the idea would work great.
"Education is what you're left with after you have forgotten what you have learned" - Enzo
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Stevem
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- Joined: Fri Jan 24, 2014 3:01 pm
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Re: ampeg build
Also note the 6550s need twice the heater current that the 7868s use!
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
-
Stevem
- Posts: 5144
- Joined: Fri Jan 24, 2014 3:01 pm
- Location: 1/3rd the way out one of the arms of the Milkyway.
Re: ampeg build
Sorry I forgot, but here's the info!
The chassis is 17" wide and 8.5" deep on the bottom section.
The height is 4 1/8" on the rear,7 3/8 deep on top and the first verticle rise section on the front from the bottom is 5/8" and the verticle drop down on the top front is 5/8" also.
It interesting to note that Ampeg did what Gibson did in there early amps, that bring that they sheilded the OT primary wires in these amps.
Gibson did it with each primary wire being sheilded, and Ampeg ran all three Of them in one braded sheild.
The chassis is 17" wide and 8.5" deep on the bottom section.
The height is 4 1/8" on the rear,7 3/8 deep on top and the first verticle rise section on the front from the bottom is 5/8" and the verticle drop down on the top front is 5/8" also.
It interesting to note that Ampeg did what Gibson did in there early amps, that bring that they sheilded the OT primary wires in these amps.
Gibson did it with each primary wire being sheilded, and Ampeg ran all three Of them in one braded sheild.
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!