Memphis-ST1000D Amp Problem
07-26-2009, 03:16 PM
#1
Memphis-ST1000D Amp Problem
Mods, sorry if this is in the wrong place, it's been awhile since I've been on the site.
Anyways, my friend has a Memphis Audio 16-ST1000D Amp, seen here on ampguts:
http://ampguts.realmofexcursion.com/Memphis_16-ST1000D/
After loosing his old MTX Subs from playing them past there limit, he purchased another sub to take the 1ohm load. Anyways, while we were hooking the new sub up, we noticed the fuse light was illuminated. After checking the fuses on the underside, both 40A fuses were fried. So, we tried to find another 2 40A fuses in that style to try, only to find none. So we picked up 2 30A fuses, just to see if it would work, and try to source the problem. As soon as we got the 30A in (Gain was turned down to a minimum level, stereo was on standby) they popped, like as soon as the two terminals met the amp. Tried again, with the same result.
So, what could cause this? My reasoning was if the gain was at a minimum, and the stereo wasn't playing, you could use a lower fuse to just see if it works, as the amp wouldn't need to be fused at 40A x 2 if it wasn't playing at it's mid or maximum level. Am I wrong in this assumption, or is there something wrong internally with the amp (A friend said it could be a problem with the power supply thing in the amp)}
Thanks in advance for any responses, both myself and my friend appreciate it.
Hodder
Anyways, my friend has a Memphis Audio 16-ST1000D Amp, seen here on ampguts:
http://ampguts.realmofexcursion.com/Memphis_16-ST1000D/
After loosing his old MTX Subs from playing them past there limit, he purchased another sub to take the 1ohm load. Anyways, while we were hooking the new sub up, we noticed the fuse light was illuminated. After checking the fuses on the underside, both 40A fuses were fried. So, we tried to find another 2 40A fuses in that style to try, only to find none. So we picked up 2 30A fuses, just to see if it would work, and try to source the problem. As soon as we got the 30A in (Gain was turned down to a minimum level, stereo was on standby) they popped, like as soon as the two terminals met the amp. Tried again, with the same result.
So, what could cause this? My reasoning was if the gain was at a minimum, and the stereo wasn't playing, you could use a lower fuse to just see if it works, as the amp wouldn't need to be fused at 40A x 2 if it wasn't playing at it's mid or maximum level. Am I wrong in this assumption, or is there something wrong internally with the amp (A friend said it could be a problem with the power supply thing in the amp)}
Thanks in advance for any responses, both myself and my friend appreciate it.
Hodder
07-26-2009, 03:29 PM
#2
so you were hooking up the sub with the amp on? It sounds like the amp is seeing a short when you hook up the sub, I would check to make sure your voice coils are wired right and check to see the impedance with a DMM to make sure that the sub is not showing a short.
07-26-2009, 07:02 PM
#10
50 Watt CAFz'r
Join Date: Apr 2009
Posts: 132
Mods, sorry if this is in the wrong place, it's been awhile since I've been on the site.
Anyways, my friend has a Memphis Audio 16-ST1000D Amp, seen here on ampguts:
http://ampguts.realmofexcursion.com/Memphis_16-ST1000D/
After loosing his old MTX Subs from playing them past there limit, he purchased another sub to take the 1ohm load. Anyways, while we were hooking the new sub up, we noticed the fuse light was illuminated. After checking the fuses on the underside, both 40A fuses were fried. So, we tried to find another 2 40A fuses in that style to try, only to find none. So we picked up 2 30A fuses, just to see if it would work, and try to source the problem. As soon as we got the 30A in (Gain was turned down to a minimum level, stereo was on standby) they popped, like as soon as the two terminals met the amp. Tried again, with the same result.
So, what could cause this? My reasoning was if the gain was at a minimum, and the stereo wasn't playing, you could use a lower fuse to just see if it works, as the amp wouldn't need to be fused at 40A x 2 if it wasn't playing at it's mid or maximum level. Am I wrong in this assumption, or is there something wrong internally with the amp (A friend said it could be a problem with the power supply thing in the amp)}
Thanks in advance for any responses, both myself and my friend appreciate it.
Hodder
Anyways, my friend has a Memphis Audio 16-ST1000D Amp, seen here on ampguts:
http://ampguts.realmofexcursion.com/Memphis_16-ST1000D/
After loosing his old MTX Subs from playing them past there limit, he purchased another sub to take the 1ohm load. Anyways, while we were hooking the new sub up, we noticed the fuse light was illuminated. After checking the fuses on the underside, both 40A fuses were fried. So, we tried to find another 2 40A fuses in that style to try, only to find none. So we picked up 2 30A fuses, just to see if it would work, and try to source the problem. As soon as we got the 30A in (Gain was turned down to a minimum level, stereo was on standby) they popped, like as soon as the two terminals met the amp. Tried again, with the same result.
So, what could cause this? My reasoning was if the gain was at a minimum, and the stereo wasn't playing, you could use a lower fuse to just see if it works, as the amp wouldn't need to be fused at 40A x 2 if it wasn't playing at it's mid or maximum level. Am I wrong in this assumption, or is there something wrong internally with the amp (A friend said it could be a problem with the power supply thing in the amp)}
Thanks in advance for any responses, both myself and my friend appreciate it.
Hodder
You can have the amplifier repaired if it's under warranty?
Hope this helps.
