Pyramid Amp
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=35946
Printed Date: July 13, 2025 at 9:30 AM
Topic: Pyramid Amp
Posted By: shafted
Subject: Pyramid Amp
Date Posted: July 21, 2004 at 10:23 AM
I found thid Pyramid PB-290GB 300w Gold Series amp in a trash can.:D Anyways, i repaired the rca input jacks and all of that schwag and it worked fine. Can someone tell me the exact specs on this amp other than what it says on the amp itself. 300w max, .04THD, 2 ohm stable.----->it says this on the amp. Thanks
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2 12' Profile Subs
2 12' Sony Xplod P5 Subs
1 18' Peavey Black Widow
Pyramid Gold Series 300w amp
Profile 1000w mono amp
"An old school" Rockford Fosgate Punch 100
Replies:
Posted By: kgerry
Date Posted: July 21, 2004 at 10:40 AM
you should have left it where you found it... lol there is no way to accurately determine the output of this amp without actually metering the output stage during operation... but these " hung wow " brands tend to grossly exaggerate their ratings.. i'd say it 's probably 35-50 a side.... ------------- Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: DYohn
Date Posted: July 21, 2004 at 11:12 AM
kgerry wrote:
you should have left it where you found it...
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Posted By: shafted
Date Posted: July 21, 2004 at 12:11 PM
i was just wondering. I don't use it anymore, i use my old Punch 100 instead. When I did have it hooked up, I had it in bridged operation w/parallel wiring and it made my profiles bottom out. Who cares. One thing, if this amp was 35-50 a side, if you do the math, then how come I blew up a 20 amp power supply with it?
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2 12' Profile Subs
2 12' Sony Xplod P5 Subs
1 18' Peavey Black Widow
Pyramid Gold Series 300w amp
Profile 1000w mono amp
"An old school" Rockford Fosgate Punch 100
Posted By: Leif
Date Posted: July 21, 2004 at 4:47 PM
Maybe it short circuited :)
I concur about the pyramid brand (it's the lowest of the low) but if you do want to find out exactly how much power it's putting out, it's not that hard to do, as long as you have a good car battery (or other 12v supply with plenty of current), an oscilloscope, a 4 ohm high power resistor (150w perhaps), an AC voltage meter, a DC voltage meter, a tone generator (or cd player and a cd with test tones) and enough patience to wire it all up into a test rig :).
///Leif
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