identify this amp/board please...

AKHeathen · 23rd September 2012, 12:02 PM

Found this in a shoebox wit a dew others from over a decade ago. well, possibly '02-03 at the least, but doubt it. No heatsink yet, but ill keep looking. The terminal attachments look like old school usamps, but doesn't match my 99 200x. components mount vertical,too

brandes.cm · 23rd September 2012, 12:21 PM

How about a pic?

AKHeathen · 2nd October 2012, 06:48 AM

lol, i tried, and couldn't get it to post pics from my phone. anyways, lets see if i can get them this time. just been real busy with the new baby and fall-catch-up.

seankane · 2nd October 2012, 05:40 PM

Jensen?

amc32 · 2nd October 2012, 06:38 PM

Looking at the transformer coupled hi-level inputs, single layer board and self modulating power supply, I would guess this is also a JENSEN from 89'-94'.

TexasEdition · 4th October 2012, 08:21 AM

Does it tell you what size fuse is to be inserted since the fuse is missing?

AKHeathen · 10:58 PM

no, it does not. i was not able to find a pic of a jenson internals in that era that uses the transformers and has vertical mounted components.. the original parts are mospec bd907/bd908outputs, and i have no idea on the power fets. i'm guessing something allong the lines of irfz42's. possibly i could use some spare "good used" ones i have laying around and see what happens. i also have 44n's and 48v's..

edit: only have one 42, so that's out..

MatthewS · 06:19 AM

Sorry to kick this horse, but I found this searching for something else and I can identify it.

It's an OEM'd amplifier that was used in 'Frontier 70w x 2' which was a brand Sears sold. The Sears model had a 3 pin power PLUG for power. It was also used in a white pyramid amplifier but I forget the model #. That model had the power terminal system on this particular PCB. It was a simple design but was pretty clean. Fuse is 15a and those are NOT the stock parts in the PS.. LOL!

Ok, back to finding what I was searching for.

*EDIT* Found it. Pyramids Legacy division. The LA220 - Legacy LA220

*EDIT 2* Since you're wondering why the end cap is grey, but the frontier was black and the legacy was white: Optimus Amplifier & HERE & HERE - Pyramid also OEM'd radio shacks amplifiers. So while they're all the same, this one you have is probably an optimus.

#

23rd September 2012, 12:02 PM	#1
AKHeathen diyAudio Member Join Date: Apr 2011 Location: Anchorage AK	identify this amp/board please... Found this in a shoebox wit a dew others from over a decade ago. well, possibly '02-03 at the least, but doubt it. No heatsink yet, but ill keep looking. The terminal attachments look like old school usamps, but doesn't match my 99 200x. components mount vertical,too

23rd September 2012, 12:21 PM	#2
brandes.cm diyAudio Member Join Date: Sep 2009 Location: Wisconsin	How about a pic? __________________ BK 1544 40Mhz scope.....Pyramid PS-26KX supply.....Tenma 72-380 Func. Generator

2nd October 2012, 05:40 PM	#4
seankane diyAudio Member Join Date: May 2010 Location: Washington State	Jensen? __________________ Pyramid 52 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch

2nd October 2012, 06:38 PM	#5
amc32 diyAudio Member Join Date: Mar 2008	Looking at the transformer coupled hi-level inputs, single layer board and self modulating power supply, I would guess this is also a JENSEN from 89'-94'. __________________ ...............I Hear in color.................

5th October 2012, 10:45 PM	#7
AKHeathen diyAudio Member Join Date: Apr 2011 Location: Anchorage AK	no, it does not. i was not able to find a pic of a jenson internals in that era that uses the transformers and has vertical mounted components.. the original parts are mospec bd907/bd908outputs, and i have no idea on the power fets. i'm guessing something allong the lines of irfz42's. possibly i could use some spare "good used" ones i have laying around and see what happens. i also have 44n's and 48v's.. edit: only have one 42, so that's out.. Last edited by AKHeathen; 5th October 2012 at 10:58 PM.


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2nd October 2012, 06:48 AM	#3
AKHeathen diyAudio Member Join Date: Apr 2011 Location: Anchorage AK	lol, i tried, and couldn't get it to post pics from my phone. anyways, lets see if i can get them this time. just been real busy with the new baby and fall-catch-up.

4th October 2012, 08:21 AM	#6
TexasEdition diyAudio Member Join Date: Oct 2012	Does it tell you what size fuse is to be inserted since the fuse is missing?

10th March 2013, 05:53 AM	#8
MatthewS diyAudio Member Join Date: Feb 2008	Sorry to kick this horse, but I found this searching for something else and I can identify it. It's an OEM'd amplifier that was used in 'Frontier 70w x 2' which was a brand Sears sold. The Sears model had a 3 pin power PLUG for power. It was also used in a white pyramid amplifier but I forget the model #. That model had the power terminal system on this particular PCB. It was a simple design but was pretty clean. Fuse is 15a and those are NOT the stock parts in the PS.. LOL! Ok, back to finding what I was searching for. EDIT Found it. Pyramids Legacy division. The LA220 - Legacy LA220 EDIT 2 Since you're wondering why the end cap is grey, but the frontier was black and the legacy was white: Optimus Amplifier & HERE & HERE - Pyramid also OEM'd radio shacks amplifiers. So while they're all the same, this one you have is probably an optimus. # Last edited by MatthewS; 10th March 2013 at 06:19 AM.

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