Diamond amp help
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Joined: Oct 2015
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From: Monticello IN
Disconnect all the speakers from the amp
Turn the gains on the amp all the way down. Set xovers to Flat
Connect the DMM to one of the speaker outputs on the amp + & -
Set the DMM to VAC. If the DMM is not auto ranging set it to view four digits or more (00.00)
Play the 1000Hz test tone
Set the Rushmore HU to 15 or 16 volume with Bass, Treble and Fade to flat (Middle)
Slowly turn the gains up until the clipping light comes on and make note of the VAC on the DMM
Turn the gains on the amp all the way down. Set xovers to Flat
Connect the DMM to one of the speaker outputs on the amp + & -
Set the DMM to VAC. If the DMM is not auto ranging set it to view four digits or more (00.00)
Play the 1000Hz test tone
Set the Rushmore HU to 15 or 16 volume with Bass, Treble and Fade to flat (Middle)
Slowly turn the gains up until the clipping light comes on and make note of the VAC on the DMM
Now what.
Last edited by Tstreet15; Dec 24, 2016 at 02:32 AM.
Ultimate HDF Member
Joined: Mar 2008
Posts: 5,788
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From: SW Florida
The 800.4D is rated at 120watts @ 4ohm's. Some say it's under rated and can do ~160watts without clipping.
With 4ohm speakers at 120W you should see about 22.00 VAC. At 160w you would see about 25.30 VAC.
So what's important is what VAC reading you see at clipping, and why Haze asked. This will tell him roughly how may clean watts the amp is producing. It should be at least 22.00 VAC.
With 4ohm speakers at 120W you should see about 22.00 VAC. At 160w you would see about 25.30 VAC.
So what's important is what VAC reading you see at clipping, and why Haze asked. This will tell him roughly how may clean watts the amp is producing. It should be at least 22.00 VAC.
Thread Starter
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Advanced
Joined: Oct 2015
Posts: 98
Likes: 0
From: Monticello IN
The 800.4D is rated at 120watts @ 4ohm's. Some say it's under rated and can do ~160watts without clipping.
With 4ohm speakers at 120W you should see about 22.00 VAC. At 160w you would see about 25.30 VAC.
So what's important is what VAC reading you see at clipping, and why Haze asked. This will tell him roughly how may clean watts the amp is producing. It should be at least 22.00 VAC.
With 4ohm speakers at 120W you should see about 22.00 VAC. At 160w you would see about 25.30 VAC.
So what's important is what VAC reading you see at clipping, and why Haze asked. This will tell him roughly how may clean watts the amp is producing. It should be at least 22.00 VAC.
Ultimate HDF Member
Joined: Mar 2008
Posts: 5,788
Likes: 203
From: SW Florida
If your reading the VAC on the DMM correctly the amp is clipping at 51watts.
See what you get for a reading on four channels as tesnevo suggested?
Are there two LL connected to the amp?
Going to have to start troubleshooting back toward the source.
See what you get for a reading on four channels as tesnevo suggested?
Are there two LL connected to the amp?
Going to have to start troubleshooting back toward the source.
Ultimate HDF Member
Joined: Mar 2015
Posts: 6,446
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From: TEXAS
Originally Posted by Tstreet15
The installation kit i got for the amp from BAB had to had two resistors 47 ohm. When i had the biketronics amp i never had any resistors.
Shoot BAB a PM and maybe he can assist as well. Spoke to him today for a while on his day off about various audio topics as that boy is passionate about this stuff.
Take ur time and double or triple check ur install and settings. It will be a simple fix.
T.
Ultimate HDF Member
Joined: Mar 2008
Posts: 5,788
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From: SW Florida
Can you post a couple of pics of the amp and wiring?
Banned
Joined: Dec 2016
Posts: 1,177
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From: Miami, FL
It clipped as in solid red or blue? Keep raising it until solid red and mark it. Then put some music on and raised your gains like BAB said until it flashes red then turn it down a notch. Now see if the gain is close to where u marked.
Lastly when you have music on and it flashes red.....how does it sound? Does it sound distorted?
Lastly when you have music on and it flashes red.....how does it sound? Does it sound distorted?
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