Monday, August 8, 2022

Williston Audio EXTRAS - Old School Goodies!

Wow, it's been a minute since I've posted an update here. I wanted to let you all know I'm still making videos weekly on YouTube and recently added a 2nd channel for more content. My main channel, Williston Audio Labs will always be accessible via http://www.willistonaudio.com, but the secondary channel called Williston Audio EXTRAS will be available via http://retrocaraudio.com. This EXTRAs channel includes videos I think may have less interest than those on the main channel. This includes a lot of old school car audio equipment.

Recently I've released some videos of LA Sound, Xtant, MTX and more amplifiers you may want to check out if you haven't already. I'll link them below. Please remember to subscribe if you haven't already as I'm releasing weekly videos there as well!

Thanks as always for watching, sharing and engaging!

1998 Xtant 1001dx


1994 MTX Black Gold BGA2125


Again, more videos are available here: https://www.youtube.com/c/WillistonAudioEXTRAS/videos

Wednesday, June 19, 2019

Old School SPL Challenge?



With the recent $150 SPL challenge ending, HifiVega and I have been discussing ways to create old school challenges and his idea for the first one is....


SPL challenge using old school IASCA power class rules. Four Classes total:


(1) Zero - 50 watts

(2) 51 - 100 watts

(3) 101 - 250 watts

(4) 251 - 500 watts* (walled included)


*(includes other classes walled. In other words if you go walled, you will automatically be placed in 251-500 walled class, even if you have a 50 watt amp. Walled is defined as box is 12” or closer to headliner. 12” ruler must fit between the box and the headliner across the entire box to be excluded from walled class)


Classes based on rated 4 ohm stereo power of old school amplifier (must be year 2005 or older amp). Subs can be old or new, no limit on size or quantity. SPL measurements only as we can't have SQ judges checking out everyone's car. SPL measurements accepted by TermLab, SSA APM-2 and SPL Labs meters. No mics, sorry (I know that's more old school, but too many variables). No subs allowed forward of B-Pillar


We will provide list of car audio shops who will donate meter time or list their metering fee. There will be a Facebook group all are welcomed to join. We will also keep results on OldSchoolStereo.com, however it wil be much easier to keep up with the challenge on Facebook.


Meter must be placed on windshield. No restriction for location. Doors closed and windows sealed up. Challenge ends on October 21, 2019.


Now, I know people will complain about the US Amps VLX and Orion Concept amps, but this is just for fun, right? Will be cool to see what people can do with Orion 225 HCCA's and Punch 45's


Goals? Have fun, bring out OS equipment to use and show off. Prizes for winners.More details coming!


Examples of cheater amps? US Amps VLX Series (25, 50, 200, 400), Orion HCCA (225, 250, 2100), Concept 97-3, Lanzar 50C, Crossfire CFA15/30HC, HiFonics Ulysses/Isis, Rockford Power 50x2, PPI ProMos 25/50, ProArt 50/100, Phoenix Gold MPS2220/2240/2500, Soundstream Class A 3.0/6.0/10.0/10.2, Audio Art 50/100HC, Earthquake 40UHC, Planet Audio P225HC (20x2), Crunch 50SHC, Memphis HC50, MTX MTA225, MTA250, 225HO, MMATS D100HC (200W @4 ohms), and more!


Old School SPL Leaderboard

(updated 8/10/19)

0-50 Watts

1. 143.6db Matthew Starke Soundstream Ref 200s
2. 132.8db Jud Stansell RF Punch 45 25tolife
3.
4.
5.


51-100 Watts

1. 143.8db Matthew Starke RF 200s
2. 139.1db Nick Winner US Amps 100
3.
4.
5.

101-250 Watts

1. 150.00db Matthew Starke RF punch 150 25tolife
2. 144.7db Brad Newsome Hollywood RVH-1000m
2. 140.3db Shanon Arrowood Kicker ZR 360
3. 137.4db Brad Schulke Crutchfield 50x4
4. 133.9db Clint Faist Lanzar Optidrive 200
5.

251-500 Watts *walled class*

1. 149.6db Mitchell Mbooma Bulmer MTX 81000d
2. 148.48db Matthew Starke US Amps 1000
3. 148.18db Ronnie Smith Apline MRV-1507
4. 146.2db Clint Faist Elemental Designs nine.1
5.




Monday, April 23, 2018

OSS Swag Now Avaiable! T-Shirts and More


Finally!! Get your Old School Stereo "I am Old School" design T-shirts exclusively on the TeeSpring site here: http://teespring.com/oldschoolstereo

Depending on feedback, I may post new designs occasionally. The design show above is our most popular design, choose between 4 colors and several sizes. Each shirt purchase helps support OSS / Williston Audio Labs and allows us to continue offering unbiased reviews.

Also, just in time for summer, check out this Old School Stereo "OSS Parking Only" Beach Towel. The towel is 62" x 30" and shows the beautiful internals of the Audio Art 100HC amplifier. Get yours while they are available! https://teespring.com/stores/bigdwiz



Thanks as always for supporting OSS. Don't forget to subscribe to our YouTube.com/BigDWiz channel so you can keep up to date on our latest audio test!

-BigD

Wednesday, February 14, 2018

BigDWiz Shout Out Series Episode 2

Here we have episode 2 of the BigDWiz Shout Out Series. Today we look at the following Channels:
Old School Car Audio
datatech2000
Ryan Blankenship
Barevids

Please check out each of these channels and make sure you subscribe and tell them BigD sent ya!

Old School Car Audio is a relatively new channel by my mate Craig down in Australia. Although he just started a few months ago, the videos are superb quality and this channel deserves WAY more views and subscribers. See information below:
YouTube Channel:  https://goo.gl/Gx2AtH
Welcome To Old School Car Audio: https://youtu.be/srRAze-9jqw
Jeep JK Wrangler Project: https://youtu.be/kk_DaE6f4Vo

Datatech2000 is a channel displaying mostly car audio head units. Dan runs the channel and shows off everything from early 80's Pioneer head units, to highly desirable Nakamichi tape decks and early 90's Alpine CD tuners. Dan also repaired my Sony CDX-R77 that would not play CD's. Great technician as well!

YouTube channel: https://www.youtube.com/user/datatech2000
Alpine 7902 CD Tuner: https://youtu.be/QUrZLx9HFbQ
Nakamichi TD700: https://youtu.be/fdV90-L0Gl0
Vintage Pioneer KP 500: https://youtu.be/I4P6HlfpSa0
Contact Dan for repairs: dantheman209@gmail.com

Ryan Blankenship's channel focuses on car audio amplifier tests and what he calls "Budget Gem or Budget Bust". He unboxes the amps, then tests, then talks about the results.

Ryan's YouTube Channel: https://www.youtube.com/user/bigblank69
Precision Power Black Ice 7000: https://youtu.be/Q3bgecZvlAA
Rockville DB16: https://youtu.be/OAGjWcfFZqY

Barevids is a UK based channel displaying mostly videos about amplifier repairs. I find the videos fascinating and think you will enjoy them as well!

Barevids YouTube Channel: https://www.youtube.com/barevids
Banda Amplifier Repair: https://youtu.be/P5fGVMVgGtg
How Do Car Amplifiers Work? https://youtu.be/T507jHLQFnQ

Send me a few bucks if you want to support: https://paypal.me/BigDWiz

My Favorite Screwdriver Kit: http://amzn.to/2x0VzcE

Test Your Own Amps! SMD / D'Amore Engineering AMM-1:
Amazon - http://amzn.to/2u2EgKV
WCCarAudio - https://goo.gl/CVCgU3

Make sure you are subscribed to my channel so you'll receive notifications when I upload the next exciting video! Thanks for your support and remember to keep it Old School!

Support OSS - Williston Audio Labs and get extras!
http://www.patreon.com/OldSchoolStereo

Subscribe to my channel: http://www.youtube.com/BigDWiz
Visit My Website: http://www.oldschoolstereo.com
Follow me on Twitter: http://www.twitter.com/oldschoolstereo
See cool pics on Instagram: http://www.instagram.com/OldSchoolStereo

MUSIC BY: YouTube Artist free for use on YouTube video



Sunday, December 17, 2017

OSS and Williston Audio Video Updates!

It's been a while since I've posted here, so I thought I'd add updates to the Video page showing a huge list of my videos, hopefully more easily categorized than on YouTube. Notable updates include:

1999 Rockford Fosgate Power 1100a2 Amp Dyno Testhttps://youtu.be/zADEl30A8_o

1987 a/d/s PQ20 Review and Amp Dyno Testhttps://youtu.be/KrLNDorSHKk
1996 Cambridge Soundworks Model Twelve Transportable System https://youtu.be/_OIsKjCs-D4

Again, there are MANY more new videos listed in alphabetical order on the Video Section of this website, don't forget to check that page and keep it bookmarked.

Make sure you are subscribed to my channel so you'll receive notifications when I upload the next exciting video! Thanks for your support and remember to keep it Old School!


Support OSS and get extras!

http://www.patreon.com/OldSchoolStereo

Subscribe to my channel: http://www.youtube.com/BigDWiz

Follow me on Twitter: http://www.twitter.com/oldschoolstereo
See cool pics on Instagram: http://www.instagram.com/OldSchoolStereo

See Recent Old School Installs Compilation Volume 2 on YouTube


or embedded below:




Sunday, January 29, 2017

Rockford Fosgate Power 1000c Amp Dyno Test

The Power 1000c or Power 1000 MOSFET was Rockford Fosgate's top of the line amplifier offering from approx. 1990-1994. Earlier models of the 1000 were available in black or custom colors via the Perfect Interface division. The 1000c is one beautiful amplifier! It's retail cost was $2699 USD and was rated to deliver 150x4 at 4 ohms or 500x2 at 4 ohms. See previous videos where we've discussed this amplifier more in detail.

RF Power 1000 Terminator - https://youtu.be/Ro1rra0bmGI

Old School Monster Amps: https://youtu.be/aBHqYCYtfMc
RF Power 1000 repaired - https://youtu.be/IRe-STOe1B0
RF Power 1000 2 ohms dynamic - https://youtu.be/Jyc_ZXr1G9Q
RF Power 1000 MOSFET Playlist - https://www.youtube.com/playlist?list=PLu98-M_EowHMhBMvLp8u-G2ZpoCBZJP7b

Make sure you are subscribed to my channel so you'll receive notifications when I upload the next exciting video! Thanks for your support and remember to keep it Old School!


Support OSS and get extras!

http://www.patreon.com/OldSchoolStereo

Subscribe to my channel: http://www.youtube.com/BigDWiz

Follow me on Twitter: http://www.twitter.com/oldschoolstereo
See cool pics on Instagram: http://www.instagram.com/OldSchoolStereo

See Amp Dyno Test in 1080P on YouTube


or embedded below:




Tuesday, January 24, 2017

Updates at OldSchoolStereo - January 2017

Sorry guys, it's been a minute since I've updated the OSS website. I spend most of my "free time" editing videos and sharing cool pics on Instagram. OSS has grown quite a bit in the last year and we are now over 22,000 YouTube subscribers, 12,500 Instagram followers, and 5000 plus likes on Facebook.

You may have noticed I have also tested more new amplifiers. I feel this is important and I will include as much historical information on the company as possible. My BigDWiz YouTube channel will continue to show OSS content as well as other audio, video, photography and technology related videos. Consider the Old School Stereo component will be a "show" on the BigDWiz channel. We put a lot of time and effort into our videos and feel adding newer technology as well to the channel will help us grow, and also introduce people to the vintage gear.

Thank you as always for supporting OSS, see the updated video list in the Video Section of our website. I've posted a few of the more popular recent videos below. More coming soon! Make sure you are subscribed on the BigDWiz YouTube channel for updates when new videos are released.




Sunday, December 28, 2014

Linear Power 8002SW Amplifier Amplifier Dyno Test Old School AD-1

Early 90's Linear Power 8002SW 800W Mono Amplifier
The Linear Power 8002 was an 800 Watt single channel amplifier optimized for 8 and 4 ohm loads. It was available from 1991-1997 and sold at a MSRP of $1599. Unlike most of the mono amplifiers of today, this 8002 is capable of reproducing the entire 20Hz - 20kHz frequency range. 

We initially ran all of the tests using the 4 ohm power supply taps, which lowered rail voltage and increased current. Amp is less efficient in this mode and also produced less power. After a call with Linear Power, it was suggested I set the amp to the 8 ohm taps to run the 8 and 4 ohm Dyno tests. If you read the original Linear Power manual, they caution against running the amp in 8 ohm mode powering 4 ohm speakers. It is quite evident these amps are overbuilt and are more than capable of handling the additional load without breaking a sweat!

Linear Power 8002SW's Guts - TO-3 Transistors

Specifications according to the 1991 Car Stereo Review Directory (July/Aug 1991):

"1 channel. 800 W x 1. Features biwired output terminals for feedback loop, which keeps speaker wire DC resistance from reducing damping factor; defeatable subsonic filter; soft turn-on/off; fan cooling; metal shroud. FR 19-20,000 Hz. 17 x 3 x 9.5 in - $1,600" (CSR Jul/Aug 1991)

The Linear Power 8002 was also in a battle of "monster" amplifiers in the October 1991 Car Audio & Electronics magazine. Other challengers were the Rockford Fosgate Power 1000 Mosfet, Precision Power 2350DM, Orion GS500 and HiFonics Colossus VII...quite a group of large, powerful, Class AB amplifiers! Since the 8002SW is a mono amplifier, the tester used 2 of these amps in the comparison. It may or may not surprise you, but the Linear Power came out on top. Quite an impressive feat, considering the competition!

Watch the video and see the results obtained from this 20yr old car audio amplifier. Nothing short of spectacular!

Here are the results from my test with the SMD/D'Amore Engineering AD-1 Amp Dyno:

8 ohms mono8 ohms - Amp is rated at 800W at 12V
8 ohms - Certified 1% THD - 818W at 13.99V
8 ohms - Uncertified - 819W at 14.05V
8 ohms - Dynamic RMS - 1029W at 14.31V

4 ohms mono4 ohms - Amp is rated 800W at 12V
4 ohms - Certified 1% THD - 824W at 13.5V
4 ohms - Uncertified - 855W at 13.48V
4 ohms - Dynamic RMS - 1407W at 14.5V
4 ohms - Dynamic RMS - 1606W at 15.17V



All tests above were at 40Hz. As you can see by the results, this amp is well suited for subwoofers or mid-basses as it has a nice amount of dynamic headroom for those transient peaks. 

Watch the video in full 1080P HD Here >>

Or embedded below:


More Amp Dyno AD-1 tests coming!

Make sure you are subscribed to my channel so you'll receive notifications when I upload the next exciting video! Thanks for your support and remember to keep it Old School!


Subscribe to my channel: http://www.youtube.com/BigDWiz
Visit My Website: http://www.oldschoolstereo.com
Follow me on Twitter: http://www.twitter.com/oldschoolstereo
See us on Facebook: http://www.facebook.com/oldschoolstereo

Check out these other cool car audio channels:
http://www.youtube.com/CarAudioFabrication
http://www.youtube.com/meade916
http://www.youtube.com/SoundManCarAudio
http://www.youtube.com/DAmoreEngineering

Thursday, October 16, 2014

Rockford Fosgate Power 1000 Mosfet Amp Dyno Test 2 Ohms Bridged Dynamic IHF-202 Certified

Rockford Fosgate Power 1000 Mosfet


Those who know car audio from the 80's and 90's know the Rockford Fosgate Power 1000 Mosfet. A beast of a four-channel amp, costing close to $3000. The model shown above is a later generation "Terminator Edition". First gen models were 6" longer with a caboose to help hide the wiring and they also had no LED meter like the later "Terminator Edition" and 1000c models. Understand, not all chrome Power 1000's with LED's are Terminator Editions. Internally, they appear to be the same amp, yet Rockford Fosgate gave appreciation to Wayne Harris' design of the shortened 1000 with the LED meters and made a limited run of Terminator Editions. Read the earlier article about this amp here.


While working on the full Amp Dyno test of the Power 1000, I thought the results were interesting enough to post a short video showing the 2 ohm bridged output using the Dynamic RMS Power mode. This mode adheres to the IHF-202 standard for testing dynamic power



Watch the video in full 1080P HD Here >>

Or embedded below:


More Amp Dyno AD-1 tests coming!

Make sure you are subscribed to my channel so you'll receive notifications when I upload the next exciting video! Thanks for your support and remember to keep it Old School!


Subscribe to my channel: http://www.youtube.com/BigDWiz
Visit My Website: http://www.oldschoolstereo.com
Follow me on Twitter: http://www.twitter.com/oldschoolstereo
See us on Facebook: http://www.facebook.com/oldschoolstereo

Check out these other cool car audio channels:
http://www.youtube.com/CarAudioFabrication
http://www.youtube.com/meade916
http://www.youtube.com/SoundManCarAudio
http://www.youtube.com/DAmoreEngineering

For further information on Rockford Fosgate equipment, please visit:
http://www.rockfordfosgate.com

Monday, December 2, 2013

1993 Rockford Fosgate 200 DSM vs SMD AD-1 Amp Dyno - Impressive!

1993 Rockford Fosgate Punch 200 DSM Amplifier


The 1993 Rockford Fosgate Punch 200 DSM was one of the most well regarded amps of it's time. Here's a quote from a May/June 1993 Car Stereo Review test of the Punch 200 DSM, "In terms of design, construction, aesthetics, and sonic purity, Rockford's Punch 200 easily stands among the best power amplifiers on the market today...If you're driving your system with something else, chances are you're listening to something inferior." (Ken C. Pohlmann)

We knew based on the previous tests of the Punch 200 this amp was powerful and dynamic, however we were unaware of the hidden "dynamic power" within this amp. Back in 1993, this amplifier retailed for around $600 US and replaced a legend, the Punch 150HD. It was no small feat for Rockford engineers to create a superior amp to the tried and true Punch 150, but trust me...they were successful! 

Watch the video and see the results obtained from this 20yr old car audio amplifier. Nothing short of spectacular!

Here are the results from my test with the SMD/D'Amore Engineering AD-1 Amp Dyno:

8 ohms mono = 4 ohms stereo x 2
8 ohms - Amp is rated at 200W at 12V (or 100W x 2 at 4 ohms)
8 ohms - Certified 1% THD - 258W at 12.85V
8 ohms - Uncertified - 262W at 12.87V
8 ohms - Dynamic RMS - 262W at 12.83V

4 ohms mono = 2 ohms stereo x 2
4 ohms - Amp is rated 400W at 12V (or 200W x 2 at 2 ohms)
4 ohms - Certified 1% THD - 421W at 12.53V
4 ohms - Uncertified - 423W at 12.51V
4 ohms - Dynamic RMS - 459W at 12.93V

2 ohms mono = 1 ohm stereo x 2
2 ohms - Amp is not rated at 2 ohms mono or 1 ohm stereo
2 ohms - Certified 1% THD - 573W at 13.06V
2 ohms - Uncertified - 856W at 11.87V
2 ohms - Dynamic RMS - 890W at 12.97V

All tests above were at 40Hz. We re-ran the tests at 1kHz and the only notable differentiation in results was the 2 ohms Dynamic RMS test where we obtained 920W at 12.79V. We have determined the difference was related to voltage and believe provided the proper voltage (14.4V), the amp would have measured over 1000W Dynamic RMS at 40Hz also. Not bad from a 200W amp!

Watch the video in full 1080P HD Here >>

Or embedded below:


More Amp Dyno AD-1 tests coming!

Make sure you are subscribed to my channel so you'll receive notifications when I upload the next exciting video! Thanks for your support and remember to keep it Old School!


Subscribe to my channel: http://www.youtube.com/BigDWiz
Visit My Website: http://www.oldschoolstereo.com
Follow me on Twitter: http://www.twitter.com/oldschoolstereo
See us on Facebook: http://www.facebook.com/oldschoolstereo


Check out these other cool car audio channels:
http://www.youtube.com/CarAudioFabrication
http://www.youtube.com/meade916
http://www.youtube.com/SoundManCarAudio
http://www.youtube.com/DAmoreEngineering

For more information about Rockford Fosgate equipment, please visit:
http://www.rockfordfosgate.com