Hello, newdy into the DIY class A world and am wanting to maybe go full active on my Carver Amazings using a class A amp(s) to power the ribbons. The bad thing is they are very power hungry and are only 1.5ohms. I want to do a pair of mono blocks and have been trying to research if or which Pass clone would be best. From my research the Aleph 2 seems like it way work. In the manual it state it’s 100 watts@8, 200 watts@4 with a maximum of 400 watts and can play into any load down to a dead short. How true is this and will they be able to play a 1.5ohm load? Any other suggestion's or advice would be greatly appreciated too!
While it is true they could play into a dead short it doesn’t mean the distortion curves would be any good.
The original Aleph would probably be better for this. Alternatively the Aleph 2 could be optimized for this but I would want some test equipment to do this. You would need to adjust two resistors around the constant current source feedback transistor.
The original Aleph would probably be better for this. Alternatively the Aleph 2 could be optimized for this but I would want some test equipment to do this. You would need to adjust two resistors around the constant current source feedback transistor.
I figured distortion would obviously go up but I wonder if would still be within some exceptable level and what the wattage would be?
I also read that you could make mods to curtain amps to drive lower impedance loads but honestly most sounds a little foreign to me at this point having never built one YET!
I also read that you could make mods to curtain amps to drive lower impedance loads but honestly most sounds a little foreign to me at this point having never built one YET!
You can get a few clean watts into 1.5, but with the low efficiency of the Carvers it may not be worth the effort.
Thank you for your response Papa. Do you have a good suggestion for one of your amps that might work?
Which amazing version do you have ? the platinum version shows no less than 3.76 ohms according to stereophile
I have the originals which are dual 30”
.75ohms. I even double check with a meter this morning, 1.5ohms🥺
.75ohms. I even double check with a meter this morning, 1.5ohms🥺
I seriously doubt the bass section dips that low. Measure the bass section alone as that’s where amps are pushed the most and might not survive but most high current amps can survive mid/twt frequency dips of 1.5 ohms
From here , It appears your measuring the mid/twt strip only
From here , It appears your measuring the mid/twt strip only
Yes, I’m just talk about the full range ribbons here. I already have a pair of self built class AB 1100 watts mono blocks that are currently running on the hole speaker but would move them to the bass section and wanted to see if a DIY Pass amp could power just the ribbons. As Mr Pass already stated, they are very inefficient so it might not be worth the effort, with some people running up to 1500 watts on the ribbons alone.