Question about SAE-1200D

[ingramk03 1]

This might be a dumb question but I'll go ahead and ask. I was tuning my 1200d for the first itme this morning and before I could reach the 35v suggested voltage with the DMM, the amp started making a faint popping, buzzing sound. My target volume is 21/35 and the noise appeared at about 13/35. The noise went away as I turned it down. I'm running 1/0 gauge from front to db block and a run of 4 ga for 5' to the amp. BTW, no db gain was used and the remote gain was at 1/2 with susbsonic set a 28hz a x-over set at 1/2 as stated in manual. Anyone experience this before?

[sundownz 197]

Where was the noise coming from ? The amp itself ?

[ingramk03 1]

It sounds like it.

[sundownz 197]

Try unhooking the speaker to make sure it is from the amp (if the speaker is hooked up).

[ingramk03 1]

No speaker has ever been hooked up to it, just DMM. My Fi's won't be in until later today. I'm trying to get it tuned before they arrive.

[sundownz 197]

If it is a high frequency squeal that may actually quit once a load is connected. If it does not let me know.

[ingramk03 1]

It's not a squeal, it's more of a cracking or popping sound, sort of like a bad connection popping, but real faint sounding. I'll go look everything over again but I'm confident everything is right. BTW, I'm using a 50Hz tone and the DMM is connected to the outside terminals.

[ingramk03 1]

Ok, after turning it on again without the DMM the noise is a constant buzz (very very faint) as I turn volume up the buzz or hum starts to crackle, but it does not go away even at no volume (the crackle goes away as volume is decreased) .

[sundownz 197]

In that case the amplifier may have experienced damage in transit - you should return it for exchange.

[ingramk03 1]

I think the problem was solved....I was tuning with engine off and my Optima got drained, amp wasn't getting enough voltage obviously. This amp sure is power hungry.

[Sir-Lancelot 216]

probably real power hungry without a way to recharge.

[lt1jerome 0]

Where did you get the test tone from? Also you said you were setting up the amp with no sub connected, how do you know were to set the gain. I obviously have not done this before. I just purchased the same amp so I wanna do this right the first time.

[sundownz 197]

Your amp should have came with an instruction sheet if you got it from the e-bay auctions.

[ingramk03 1]

Use your tuning tutorial like Jacab said if you bought off eBay.

I use the following site for my test tones.

http://www.ronelmm.com/tones/

[ingramk03 1]

Hey Jacob since I'm using a Navone N774 and my input is close to 10V, with the amp gain all the way down I was still above the recommended 35V. I had to turn the remote gain down about half to raise the gain on the amp any. Now that it's set with the amp gain at 1/8 and the remote gain at 1/2, I can still turn the remote gain up as long as I don't exceed the orignal volume I tuned at with, correct?

[sundownz 197]

Not sure if I follow you - but it sounds like you would be okay.

[ingramk03 1]

The remote gain is a "gain reducer" right, since you can't exceed the gain you set on the amp with the remote gain even at max. When I first set eveything up, the amp gain was at 0, the remote gain was at max and my volume was at 21/35, I was getting a voltage of somewhere around 45V on my DMM. I decided to set the remote gain to 1/2 as use that as a benchmark and do my adjustments on the amp, which I got to 1/8 of a turn for 35V. Now, since I never exceed or get close to 21/35 for volume, if I wanted to turn the remote gain up to max at a volume of, let's say 10/35 to wake the neighbors, it should be ok, right?

[sundownz 197]

Sounds okay to me