Hey avionixx has come out with a new line of amps saw a few of them on ebay... and there web site now has changed and has a "coming soon" on it... look like they could be some impresive amps with most the bugs worked out of them that the last line had... hopefully...
Chronos
Replies (5)
alanjlamore on 11/3/2004 18:23:19
Yea, I'd like to know what those bugs were. I have the 800.4 and one channel blew (so I can't use it bridged for 2 subs anymore).
Now I'm using 2 channels for my CDT 6.5" components and plan on getting the JBL BP600.1 amp for the subs.
I wouldn't mind replacing the Avionixx amp that I have now, with one that is only 2 channels (so it's smaller since I'm only using 2 right now).
I just tried their website avionixxusa.com, but got nothing. I'll look for that new site...
swez on 11/3/2004 19:31:35
Alan,
How old is that 800.4 amp you have now? Is it still under warrantee?
It's just one channel that has gone south right? Chances are good that only the output transistors or preamp drivers for that channel are toast. I would think it is worth fixing or sell to a techie that knows how to troubleshoot and repair amps. (if out of warrantee)
The parts are generally pretty cheap... maybe 20 bucks. It's the labor rate that costs so much. If you are in school, maybe an electronics major can have a look at it, bill you for parts and turn it into a school project paper? With the proper equipment, it would pretty easy to repair.
What say you?
Swez
alanjlamore on 11/3/2004 19:42:04
Hey Swez, it's still under warantee, but they need the recipt, or something proving that I bought it, and I don't have anything anymore.
I was thinking about fixing it myself as I've had to troubleshoot down to component level with military communications equipment, but I'd have to get a bunch of stuff like a soldering iron, solder, flux, esd mat, wrist band.... and frankly I'm too lazy GRIN .
The biggest thing holding me back from fixing it myself is that I'm affraid I won't know much about it, being that it's a class T amp. I wish I had a diagram with signal flow, then it would be easy (I think).
It's working fine now as a 2 ch. amp for my components, and even if I could fix it, I wouldn't trust to use it for my subs again. I just figgured that it'd be better to just have a 2 ch. amp if I'm only using 2, to save space.
Then again, I could try to fix it, and if successful, try to sell it THINK
Anyway, thanks for the suggestion. Whenever I see your "What say you?" comment it makes me think of The Lord of the Rings *LOL* I say it dramatically in my head whenever I read it GRIN .
Thanks again,
Alan
uochronos on 11/4/2004 02:45:17
its www,avionixx.com now are you sure they insist on reciet? many places well fix it even with out if you sweet talk them or tell them it was a gift or something similar.
Chronos
swez on 11/4/2004 09:20:06
Alan,
If you filled out the registration card, they have a record of your S/N, SKU code and who bought it etc. That's proof enough! Just because we do not have a receipt, is a poor excuse for shedding their opportunity to prove to their customers that they stand behind the product !!! This is worth some determined pressure to make things right.
FYI: I have on several occassions, taken matters right to top company Management if I get a lousy anwser from a clerk or Customer Service Rep. When we press the right buttons enough times, we usually get a just result.
On the other side of the coin, you have a background already on board level diagnostics right? The most likely components that have failed here, are usually output transistors mounted in the heat sinks. There is no soldering involved in removing, testing and repair of these basic devices. A decent VOM will do most of the testing as you can check the PNP/NPN junctions on channel 3 vs channel 4.
Class T amps use a special "Tripath Technology" chip to set timing on the PWM power supply. Everything beyond that chip controller section, is common to most newer MOSFET amp designs seen in communications (RF & AF amps) amps. I doubt it's the power supply system as that affect at least 2 channel pairs. Since these amps are relatively cheap in price, (not using 4 discrete power supplies) am pre-supposing your power supply is fine. It's the audio amplification circuits (down stream) that are most likely the culprit. Some simple voltage tests can determine that as well.
Tell ya what... get another amp when you can to replace, this Avionixx amp. After that, if you don't wish to dig into it on your own, ship it to me. I'll open it up, run some diagnostics and give you a detailed finding of what I see. All it will cost is shipping (both ways) and maybe a few parts. Labor costs... just a "tip" of your choosing if I am able to repair the unit. I have a little time this winter for such things and basic equipment to make the diagnosis and effect repairs. If I cannot get it back in shape, will advise and ship it back to you.
If you wish to pursue this option, my private e-mail is: swezdp@juno.com
We can discuss the whole thing via e-mail and phone, if you want to take me up on this offer. Besides, I really like doing stuff like this. It would be my pleasure to help ya out if possible.
Comments?
Swez
PS I have not seen Lord Of the Rings yet.... the "What say you" phrase, comes from my desire to be unique. A few Talk radio guys use that phrase and I liked it. So, I have borrowed it. If it's good enough for Rush Limbaugh... it's good enough for me. 8-)
Chronos
Replies (5)
alanjlamore on 11/3/2004 18:23:19
Yea, I'd like to know what those bugs were. I have the 800.4 and one channel blew (so I can't use it bridged for 2 subs anymore).
Now I'm using 2 channels for my CDT 6.5" components and plan on getting the JBL BP600.1 amp for the subs.
I wouldn't mind replacing the Avionixx amp that I have now, with one that is only 2 channels (so it's smaller since I'm only using 2 right now).
I just tried their website avionixxusa.com, but got nothing. I'll look for that new site...
swez on 11/3/2004 19:31:35
Alan,
How old is that 800.4 amp you have now? Is it still under warrantee?
It's just one channel that has gone south right? Chances are good that only the output transistors or preamp drivers for that channel are toast. I would think it is worth fixing or sell to a techie that knows how to troubleshoot and repair amps. (if out of warrantee)
The parts are generally pretty cheap... maybe 20 bucks. It's the labor rate that costs so much. If you are in school, maybe an electronics major can have a look at it, bill you for parts and turn it into a school project paper? With the proper equipment, it would pretty easy to repair.
What say you?
Swez
alanjlamore on 11/3/2004 19:42:04
Hey Swez, it's still under warantee, but they need the recipt, or something proving that I bought it, and I don't have anything anymore.
I was thinking about fixing it myself as I've had to troubleshoot down to component level with military communications equipment, but I'd have to get a bunch of stuff like a soldering iron, solder, flux, esd mat, wrist band.... and frankly I'm too lazy GRIN .
The biggest thing holding me back from fixing it myself is that I'm affraid I won't know much about it, being that it's a class T amp. I wish I had a diagram with signal flow, then it would be easy (I think).
It's working fine now as a 2 ch. amp for my components, and even if I could fix it, I wouldn't trust to use it for my subs again. I just figgured that it'd be better to just have a 2 ch. amp if I'm only using 2, to save space.
Then again, I could try to fix it, and if successful, try to sell it THINK
Anyway, thanks for the suggestion. Whenever I see your "What say you?" comment it makes me think of The Lord of the Rings *LOL* I say it dramatically in my head whenever I read it GRIN .
Thanks again,
Alan
uochronos on 11/4/2004 02:45:17
its www,avionixx.com now are you sure they insist on reciet? many places well fix it even with out if you sweet talk them or tell them it was a gift or something similar.
Chronos
swez on 11/4/2004 09:20:06
Alan,
If you filled out the registration card, they have a record of your S/N, SKU code and who bought it etc. That's proof enough! Just because we do not have a receipt, is a poor excuse for shedding their opportunity to prove to their customers that they stand behind the product !!! This is worth some determined pressure to make things right.
FYI: I have on several occassions, taken matters right to top company Management if I get a lousy anwser from a clerk or Customer Service Rep. When we press the right buttons enough times, we usually get a just result.
On the other side of the coin, you have a background already on board level diagnostics right? The most likely components that have failed here, are usually output transistors mounted in the heat sinks. There is no soldering involved in removing, testing and repair of these basic devices. A decent VOM will do most of the testing as you can check the PNP/NPN junctions on channel 3 vs channel 4.
Class T amps use a special "Tripath Technology" chip to set timing on the PWM power supply. Everything beyond that chip controller section, is common to most newer MOSFET amp designs seen in communications (RF & AF amps) amps. I doubt it's the power supply system as that affect at least 2 channel pairs. Since these amps are relatively cheap in price, (not using 4 discrete power supplies) am pre-supposing your power supply is fine. It's the audio amplification circuits (down stream) that are most likely the culprit. Some simple voltage tests can determine that as well.
Tell ya what... get another amp when you can to replace, this Avionixx amp. After that, if you don't wish to dig into it on your own, ship it to me. I'll open it up, run some diagnostics and give you a detailed finding of what I see. All it will cost is shipping (both ways) and maybe a few parts. Labor costs... just a "tip" of your choosing if I am able to repair the unit. I have a little time this winter for such things and basic equipment to make the diagnosis and effect repairs. If I cannot get it back in shape, will advise and ship it back to you.
If you wish to pursue this option, my private e-mail is: swezdp@juno.com
We can discuss the whole thing via e-mail and phone, if you want to take me up on this offer. Besides, I really like doing stuff like this. It would be my pleasure to help ya out if possible.
Comments?
Swez
PS I have not seen Lord Of the Rings yet.... the "What say you" phrase, comes from my desire to be unique. A few Talk radio guys use that phrase and I liked it. So, I have borrowed it. If it's good enough for Rush Limbaugh... it's good enough for me. 8-)
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