Saturday, June 30, 2012

BigDWiz on The Tech Guy Radio Show!

Wow, today was my lucky day!! I was able to get on the caller list to talk to Leo Laporte on his nationally syndicated radio show "The Tech Guy". Leo runs, an Internet broadcast network delivering dozens of audio and video podcasts weekly.

My question was regarding YouTube and how to download a list of my subscribers so I can do a giveaway. Leo mentioned YouTube probably doesn't make this easy for a keep spam down. My reasons for wanting the list are totally legit; I just want a way to get a text listing of all the subscribers so I can put them in to choose a lucky winner for whatever Old School car audio item I plan on giving away.

See show 887 on TechGuyLabs for more info. See the embedded YouTube Video at the bottom of this article. My favorite quote from the chat room during the show by username Howard: 

"Leo 80ties & 90ties old school? I must be ancient school."

By the way, Leo got a kick out of my "Chinese mini Amp Invasion" videos! Thanks for the recommendation Leo, I'll try it out and let you know how it works.

Make sure to Subscribe to my YouTube Channel to stay updated of my latest videos. You can also follow me on Twitter @oldschoolstereo.

aka "BigDWiz"

See my segment embedded below or See it on YouTube

Old School Car Audio Tribute Video - Submitted

Here we have a great video put together by "MrRubenEsp" on YouTube. The video is a dedication to the old school car audio gear and installs. He mentions finding most of the pictures on the Internet, and I think he did a great job putting together the slideshow. Enjoy the video below!

I've asked before and will continue to remind fans...please submit your photos/videos/installs/etc! You can reach me at oldschoolstereo at gmail dot com or via message on YouTube via username BigDWiz

BigDWiz -

Tuesday, June 19, 2012

Old School Monster Car Audio Amplifiers

Some Old School Monster Amps from the OldSchoolStereo Class D here!

Anyone who was in the car audio scene during the 90's probably recognizes names like "The Beast" and "Power 1000c". Old school monster amps were unlike the big mono block amps of today...they were Class A/B, much less efficient and some would say, much better sounding than the amps of today. I'm not getting in a battle of what's better, just confirming there are two sides here. Since you are visiting, you are more than likely a fan of the older amps. Many of the amps you see in the picture above are almost legendary in the history of car audio. Let's talk a little about each amp and it's impact on car audio.

First off, you'll notice a trio of Orion amps, all bearing the same heatsink design. The "big red" Orion 2100 HCCA is well known to be a monster cheater amp. The "Digital Reference" model displayed above was rated to handle 2 ohm mono or 1 ohm stereo loads and put out in excess of 800 watts loaded down. Efficiency? Well, not so much. All of these big Orion's require a 2nd battery and an electrical upgrade on most vehicles. Why, might you ask? Well, these amps can pull over 100A of current and most stock electrical systems would not be able to handle this massive load. Speaking of massive, the XTR-2250 was so well known as "The Beast", Orion even engraved this saying on the amp. It is rated at 250 watts per channel at 4 ohms stereo, 500 watts per channel at 2 ohms stereo or 1000 watts bridged at 4 ohms. What you say? No one ohm bridged like a Sundown? No sir, this amp would and will fry if pushed too hard.

Orion Monster Amp Art by BigDWiz

Speaking of being pushed too hard, the Orion Concept 97.3 is an amp of almost legendary status. A quick search on the Internet will give you dozens upon dozens of different pages attempting to explain this amp. Orion introduced the amp in 1997 as a bold statement to IASCA and dBDrag for the wattage classes. The 97.3 was rated at 0.5 watts per channel at 4 ohms...yes, I said 1/2 watt per channel! What's up with that? Well, Orion was trying to show the "cheater amp" had gone too far when companies such as US Amps and their VLX-25 had ratings of 12.5 watts per channel at 4 ohms but put out over 1000 watts loaded down to 1/2 ohm. Orion, an originator of cheater amps with the 225 HCCA back in the 1980's, decided it was time for this to stop. What did they accomplish in their effort to change the rules? Well, they ticked off many competitors who attempted to use these amps at low ohm loads (and fried the amps) and even got the amp banned by IASCA in 1998 (source - Orion dealer). Why would the amp cause this much controversy? Check out these ridiculous ratings, it may help (ratings pulled from the Concept 97.3 manual):

STEREO (watts @ ohm load)

0.5x2 @4
1x2 @2
2x2 @1
4x2 @0.5
8x2 @0.25
16x2 @0.125
32x2 @0.0625
64x2 @0.03125
128x2 @0.015625
256x2 @0.0078125
512x2 @0.00390625

 MONO (watts @ ohm load)

2Wx1 @4
4wx1 @2
8WX1 @1
16WX1 @0.5
32WX1 @.25
64WX1 @.125
128WX1 @.0625
256WX1 @.03125
512WX1 @.015625
1024WX1 @.0078125

Next we'll talk about the monster Rockford Fosgate amps, the Power 1000c Mosfet "Terminator Edition" and Power 650 Mosfet. Back in the early 90's the 1000c sold for $2650, while the 650 was around $1800. Again, these amps were WAY out of the reach of most car audio fanatics including me. These Power Series amps all had model numbers based on their output at 2 ohms stereo or 4 ohms bridged. For example, the 1000c was rated at 150x4 at 4 ohms, 250x4 at 2 ohms or 500x2 at 4 ohms. Similarly, the Power 650 Mosfet was rated at 125x2 at 4 ohms, 167.5x2 at 2 ohms or 325x2 at 4 ohms bridged. Unlike the Punch series amps at the time, these Power series are not known to be underrated more than 10-15%. Both amps have a temperature controlled cooling fan and the 1000c includes an ultra cool LED meter for each channel.

1991-1993 Rockford Fosgate Power 1000c Mosfet Amplifier

Next up, we'll discuss the Precision Power ProMOS 450. This amp preceded PPI's "Power Class" line and the models in the ProMOS family were made from the late 80's until the mid 90's. The 450 was the most expensive ProMOS amp and incorporated two separate ProMOS 50's into one chassis. When the first ProMOS amp, the PPI ProMOS 2050 hit the market in 1989, it went for around $800. By the early/mid 90's, the four channel 450 could be picked up for around $900 US. All of the ProMOS amps were rated to handle 1 ohm stereo or 2 ohm bridged loads. The 450 had the following ratings; 50x4 at 4 ohms, 100x4 at 2 ohms, 200x4 at 1 ohm, 200x2 at 4 ohms or 400x2 at 2 ohms. The heat sink used by these older PPI amps are in my opinion, some of the most classy designs of all time. Very simple, yet elegant and powerful. Too bad PPI used the hateful proprietary Molex plug for speaker connections and straight 8ga wiring for the positive and ground connections. As you can see from the picture below, the ProMOS 450 is even longer than the Orion 2100 HCCA!

PPI ProMOS 450 "Art Series" vs. Orion 2100 HCCA "Digital Reference"

The Earthquake PA-2300 is another very powerful Class A/B amp from the 90's. It is rated at 380x2 at 4 ohms, 575x2 at 2 ohms or 1150x1 at 4 ohms. Based on ratings alone, this is the most powerful old school amp in the bunch. The newer Dragster DH-1804 edges out the PA-2300 in power ratings, but just slightly. The Dragster is another four channel amp rated at 180x4 at 4 ohms, 300x4 at 2 ohms or 600x2 bridged at 4 ohms. Although I haven't confirmed by testing, I believe the Earthquake PA-2300 may be the most powerful amp in this group. What do you think?

See my video overview of each amp below.

Make sure to Subscribe to my YouTube Channel to stay updated of my latest videos. You can also follow me on Twitter @oldschoolstereo.

Watch the video on YouTube in 1080P or embedded below:

Saturday, June 2, 2012

Rare Old School Rockford Fosgate Power 1000 Mosfet Terminator Edition Amplifier

est. 1990 Rockford Fosgate Power 1000 Mosfet "Terminator Edition" Amplifier designed by Wayne Harris

Let us take a journey back to the year 1989...Car audio had been around for a while, but with amplifiers such as the HiFonics Colossus, Linear Power 8002 and Rockford Fosgate Power 1000, things were really getting serious. Wayne Harris, one of the pioneers of modern car stereos, was hired by Rockford Corporation and was given the task of swapping out his amps in the "Terminator Hearse" with the Power 1000 Mosfets. Wayne was kind enough to send an email describing the beginnings of the 1000C:

"If I recall correctly, I went to work for Rockford in July of 1989. One of my first tasks was to upgrade the equipment I was using in the Terminator. Rockford gave me 6 each Power 1000 amplifiers. Unfortunately, they were too long to fit in my car. I took the sheet metal for each amp to a machine shop and had them cut off the “caboose”. This made the amp about 6 inches shorter. (Now the amps would fit in my amp rack.) I then designed an LED bargraph meter display and installed these displays within the MAIN housing of the amplifiers. The final step was to chrome plate the amp shroud and then apply custom silkscreen.

The VP of marketing (Jerry Cave) saw the amps in my car prior to the 1990 CES show in Las Vegas. He like the amps in my car so much that he decided to make all Power 1000 amps look the same."

As many of you old schooler's know, Wayne Harris' Terminator Hearse is a legend in car audio. If you haven't seen it, take the time to view the video of this beast from 1985 from dBDragUSA's YouTube channel...can you say 30" subwoofer?

Sorry for the side track, I'll try to stay on subject here. The Rockford Fosgate Power 1000 Mosfet "Terminator Edition" (from now on we'll refer to as the 1000C) was a step forward in design from the original Power 1000 Mosfet, which was introduced around 1987. The internals were identical except for the LED meter and removal of the "caboose". The 1000C's chrome appearance and $2650 US MSRP meant this amp was not for your average 16 year old getting a new was for serious competitors and those who got had the means to buy such an expensive amplifier. Many Rockford dealers had one or more of these amps in their demo vehicles and most of us could only dream of owning such an amp.

RF T1000 vs. Orion Concept 97.3

The 1000C is a four-channel, class A/B amplifier with no internal crossovers. See detailed specs below:

  • Power Ratings 2 Channels (Bridged): 500 watts x 2 channels from 20-20,000Hz with less than 0.1% THD
  • Power Ratings 4 Channels4 Ohms: 150 watts x 4 channels from 20-20,000Hz with less than 0.05% THD; 2 Ohms: 250 watts x 4 channels from 20-20,000Hz with less than 0.1% THD
  • Frequency Response: 20-100,000Hz +0.5dB, -3.0dB
  • Damping Factor: At circuit board: Over 200 (referred to 4 ohms); At speaker fuse: Over 50 (referred to 4 ohms)
  • Signal to Noise Ratio: Over 80dB Unweighted
  • Instantaneous Peak Output Current: Over 100 Amperers 
  • Protection: The Power 1000 is protected by analog computer output protection circuitry and a 100A fuse. A thermal sensor shuts down the amplifier in case of overheating
  • Dimensions: 22.75" L x 7.4" W x 3.75" H
  • Weight: 21lbs
  • MSRP: $2650 US (1991)

Here is an informational email I received directly from Rockford Fosgate when I inquired about the 1000c Terminator Edition amp:

“The T1000’s went from the black painted and silkscreened ones with the caboose (that covered the 6ga B+ & Gnd terminal block), then to the black painted and silkscreened ones that no longer had the caboose and just had the one B+ and two GND cables hanging out of it.  Then it migrated into a chrome fan shroud.  That’s about the time that Wayne Harris came on board with designing the LED output meter for the T1000’s.  Then probably in ’92-’93* is when the Terminator Edition hit the market with the special screening and LED display.  It was a very limited run….I think maybe only 100pcs or so.  I think Wayne had 10 of them for himself.”

(* I think the year range was '90-91 - BigDWiz)

See the unboxing and overview video below. More information coming as soon as I get the amp repaired and fully functional...

Make sure to Subscribe to my YouTube Channel to stay updated of my latest videos. You can also follow me on Twitter @oldschoolstereo.

Watch the video on YouTube in 1080P or embedded below: