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1995 Linear Power 2502iq Amp Dyno Test AD-1

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Williston Audio Labs

Williston Audio Labs

Күн бұрын

We were so impressed with the last Linear Power amp we tested (the 8002SW), we decided to give another LP a test run on the Dyno. This time it's the 2502iQ from 1995. It's rated to deliver 125x2 at 4 ohms, 250x2 at 4 ohms or 500W bridged at 4 ohms. Let's see how it does...
BIG thanks to Gary K. for letting me borrow the amp to test!
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Пікірлер: 106
@blech71
@blech71 7 жыл бұрын
I still come back and look at these dyno runs. Great job
@wal
@wal 7 жыл бұрын
+blech71 me too because I can't recall all of the results. Tested over 100 amps this far 😬
@LuxorVan
@LuxorVan 8 жыл бұрын
I think these are beautiful amps, you can tell they were designed from high tech 1970's-80's proven technology, Chris Underwood passed away, he was an important person to Linear Power and Kicker, he should be thanked for bring back Linear Power Amplifiers! Components from High End home audio were used in the construction of these amps, making them long lasting and durable! How many To-3 amplifiers have you ever seen that would do a two ohm mono-load? I believe it is the one draw back of the To-3 transistor amp, it's incapability to handle ultra low impedance's , but it is also the same reason another Linear Power Mono-Block you dyno'd could hit 800 watts at 8 ohms and the same at 4 ohms! I still get people that argue there was no amp in the early 1990's that could hit that power at 8 ohms mono! But there was, they are as much today as they were brand new! I do believe Zed makes his claim about his first home Amplifier being ultra high power and how much he likes the To-3's used in amplifier designs at his site!
@lazzer408
@lazzer408 6 жыл бұрын
Load impedance doesn't matter as long as the rating of the device is not exceeded.
@PeterMilanovski
@PeterMilanovski 5 жыл бұрын
@@lazzer408 very true, those T03's are very rugged and there's something about the sound that they produce... I was trying to see which T03 transistors they used, I know that the 2N3055's were good for 15A each and I think that they used four of them per side... 30A for the positive rail and 30A for the negative, that's 60A peak to peak per channel assuming that they used the 22N3055's and a power supply to be able to drive them... Awesome amplifier...
@bigdogbrodavepresents6178
@bigdogbrodavepresents6178 3 жыл бұрын
@@lazzer408 well it was Car Audio...... OF COURSE impedance loads were exceeded...LOL..... Wheres my HORNS said the Mad Scientist..... BOOM!!!!!! BDBD/2021
@bigdogbrodavepresents6178
@bigdogbrodavepresents6178 3 жыл бұрын
thats right.... Theres a noticeable drop in output on these at say 1 ohm.... and a severe rise in heat... They were happiest at 4 ohms... They could do 2 ohms.... but less....hmmmmmmmmmm....... Keep that Fire Extinguisher nearby...... LOL.....BDBD.2021
@Van1018s
@Van1018s 3 жыл бұрын
Just when I thought I had seen all of your videos this one pops up today. Old-school linear power 😁👍🏼rated power at 12.5. Very nice.
@BARBELLS-AND-BUDS
@BARBELLS-AND-BUDS 7 жыл бұрын
Thanks Big D! I remember running a single one of these to a pair of Kicker comp 12's in like 97 and being so surprised how clean and articulate the bass was. Just 1.75ft^3 sealed boxes and middle range subs but wow the sound! I originally bought a pair of these in Crazy Plum and a pair of 15" Petras Hyperthrows and installing them in my 91 Prelude in the trunk, (no easy feat) It was great. 1 got stolen and other burned out during the theft, but recently repaired and modded, and back on the shelf.
@jeremybrannon7077
@jeremybrannon7077 8 жыл бұрын
Very beast. transistors are T-03 btw. not T-05. Great video
@wal
@wal 8 жыл бұрын
+Jeremy Brannon Thanks bro, total flub. I updated with a annotation, may not see it on mobile :-(
@jeremybrannon7077
@jeremybrannon7077 8 жыл бұрын
+Dereck BigDWiz lol. Just wanted to make sure people werent going to go crazy asking what that is.
@wal
@wal 8 жыл бұрын
+Jeremy Brannon I had just watched Terminator Genesis, so lucky I didn't call those T-1000's, lol
@marvinwilliams4223
@marvinwilliams4223 8 жыл бұрын
I want a linear power amp now
@wal
@wal 8 жыл бұрын
+Marvin Williams You and me both!
@audiogman5865
@audiogman5865 3 жыл бұрын
Old school rules.
@wal
@wal 3 жыл бұрын
More old school coming!
@freshkryp69
@freshkryp69 8 жыл бұрын
Nice amp! Really looking forward to testing the new LP amps out.. that 400 x 2 is gonna have big power!
@wal
@wal 8 жыл бұрын
+Freshkryp69 Maybe we'll get one in some day...
@ReginalBronson
@ReginalBronson 8 жыл бұрын
The LP2502IQ is amazing!
@nathanpitman4547
@nathanpitman4547 7 жыл бұрын
I would LOVE to see some of the older smaller LP amps like the 452 and 952s....
@wal
@wal 7 жыл бұрын
+Nathan Pitman I seem to recall testing a 952, did right at rated. There are many times when I test an amp I don't make a vid, mainly if there's nothing too interesting or exciting about the results 😊
@033Fritz
@033Fritz 7 жыл бұрын
BigDWiz the 952iq can be modded to perform like a 1502, which is impressive. Ray did a black 952iq I have & it's unreal sounding. Hands down the biggest upgrade I've seen out of my linear amps. Besides my 4.1hv.
@stevenking2980
@stevenking2980 8 жыл бұрын
Almost the quality of some of that good old "Tenna phase |||" stuff. :) Nice video. Steven
@urosb82
@urosb82 4 жыл бұрын
Are you familiar with tenna phase iii pb-300 amplifier? There is one selling cheap for some time, I always thought it was some cheap china amp from early 90s...
@godzillasballs
@godzillasballs 8 жыл бұрын
Nice test. Thanks for the upload.
@wbower74
@wbower74 8 жыл бұрын
Awesome review as always
@wal
@wal 8 жыл бұрын
+wbower74 thanks for the comment and for watching
@hi-friaudioman
@hi-friaudioman 7 жыл бұрын
that's a beautiful amp, probably worth a pretty penny too.
@pgmurray76
@pgmurray76 5 жыл бұрын
This same exact amp was on eBay 10months ago. How do I know? I always troll eBay for this exact model and saw it. Then I complimented the seller and he told me. Plus all the numbers and markings are the same! I think it was $570.
@nunyabizznizz7326
@nunyabizznizz7326 4 жыл бұрын
Ear Candy, i remember the ads.....
@rasec3377
@rasec3377 8 жыл бұрын
Nice! I know you get a lot of request but I have an old school autotek mx5000 would love to know what these amps can do hopefully you can have one in the future and have it tested.Keep up the good work
@russsmith9042
@russsmith9042 3 жыл бұрын
Nice I got a LP 5002 in mint shape didn’t know if you want to throw it on the bench and see what she will do?
@caseytbss
@caseytbss 8 жыл бұрын
Hey Dereck, that amp is stamped with May 7th 1995? Is that production date? Is this one part of your collection? That is the day I turned 16!!!!! Let me know! -Casey
@redcancustoms1239
@redcancustoms1239 5 жыл бұрын
from what I heard, that is the day it went out of warranty. subtract 2 years for production date. I could be wrong, but I think I heard Ray say this.
@caseytbss
@caseytbss 5 жыл бұрын
RedCan Customs I just brought this up in conversation..... regardless I wants it! It’s my 16th birthday stamped on it and it’s my color!
@charlesrogers6463
@charlesrogers6463 8 жыл бұрын
would like to see a la sound hermosa on the dyno
@bigdogbrodavepresents6178
@bigdogbrodavepresents6178 3 жыл бұрын
LA SOUND!!!..... I remember...
@davidlarue5713
@davidlarue5713 7 жыл бұрын
Another great video of a beautiful amp. I wonder how the new LPs perform.
@wal
@wal 7 жыл бұрын
+David LaRue new LP2250 tested here kzfaq.info/get/bejne/hNJ5m9Cbx6fQdHk.html
@JohnNolteAudio
@JohnNolteAudio 8 жыл бұрын
I wonder if my initials are inside that amplifier, that's around the time I was working there.
@wal
@wal 8 жыл бұрын
+John Nolte Very cool!
@toneitdown2
@toneitdown2 8 жыл бұрын
+John Nolte I have that amp . where at about would the initials be at ?
@JohnNolteAudio
@JohnNolteAudio 8 жыл бұрын
+toneitdown2 on the two main caps and on the aluminum rail plates. It would be a JN if I built it and tested it.
@MrCoontastic
@MrCoontastic 8 жыл бұрын
I did the same with ever box I built.
@toneitdown2
@toneitdown2 8 жыл бұрын
+John Nolte well do you know who built the amp that was in the video ? I cant tell if the initials are SW on the caps and maybe a ML on the rail ? that LP in the video is actually my amp .
@robland6118
@robland6118 5 жыл бұрын
What did it sound like on ur sub? I have always sworn by these amps after the first time I ever heard one back in the day. I think they were one of the most powerful amps for the size and had much better sound quality then any other amp I had ever had.
@masterpieceIII
@masterpieceIII 3 жыл бұрын
It would be interesting, to review the soundstream d 200 amplifier it is an amp designed by Nelson Pass and it is from the old school of car amplifiers
@wal
@wal 3 жыл бұрын
Yes they are great amps. I tested his MC500 a while back kzfaq.info/get/bejne/f7mimtWJvrm7pok.html
@iceman45ification1
@iceman45ification1 8 жыл бұрын
Holy crap! Can you say headroom? 😨 Wish I could get my hands on a few old school and new LP amps!
@wal
@wal 8 жыл бұрын
+Danny Caballero Yes, an excellent performer on the Dyno and equally well on subs and mids/highs
@iceman45ification1
@iceman45ification1 8 жыл бұрын
Great amp for the front-end or sub duty that's for sure!! :-D
@a1duzit
@a1duzit 8 жыл бұрын
The dude that use to do are systems use to talk about these all the time
@bulldogbradford8081
@bulldogbradford8081 2 жыл бұрын
First ran Linear back in '82...
@wal
@wal 2 жыл бұрын
Love some LP!
@bulldogbradford8081
@bulldogbradford8081 2 жыл бұрын
@@wal Yep!! Had a Concord HPL130 head unit also with EV woofers
@2nd_Gen_Shawn
@2nd_Gen_Shawn 6 жыл бұрын
I have a ultra linear UL600HC on eBay almost mint dad paid like 1200 for it in the 90s,thing puts out.
@don_key1
@don_key1 8 жыл бұрын
You should test the new (2015) Hifonics BRX series amps.
@Pkdimmock
@Pkdimmock 5 жыл бұрын
Looked for vids an reviews but not found anything on the In Phase IPA2001D. Got any info or opinions on this company and or amp please?
@wal
@wal 5 жыл бұрын
Not aware of that company or model
@61stbudlong
@61stbudlong 8 жыл бұрын
Hey I'm interested to see if you've ever did a dyno on a clarion dpx11500 mono block amp? I have one and it is a beast and I know it's very underrated.
@marko642003
@marko642003 6 жыл бұрын
Have you done a dyno video on the Linear Power 2002? I might be picking one up in the next couple of days and was wondering what it actually puts out.
@wal
@wal 6 жыл бұрын
No sir, this is the closest to your amp I’ve tested
@marko642003
@marko642003 6 жыл бұрын
Ok thank you, sir!
@ruikazane5123
@ruikazane5123 6 жыл бұрын
Linear Power. Linear Response. Linear Quality. Linear money out your Wallet.
@wal
@wal 6 жыл бұрын
And my Linear response... Thanks for watching and commenting! 👌
@WXSTANG
@WXSTANG 5 жыл бұрын
Not under rated, modern amps are over rated. Any amp should be able to output 20hz to 20khz at the same time.... not a single 1khz pulse which is not indicitive of what an amp outputs when playing music.
@wadehicks9270
@wadehicks9270 5 жыл бұрын
Love me sum Linear Power 😎
@roynelson7613
@roynelson7613 8 жыл бұрын
hey Big D you remember me I put that small Kenter ant in my grandson's Power Wheels I have a pioneer stereo in my rock z28 and I have two boss 700 watt a piece speakers that I'm running only for now woody amp do me any good or how about and booster equalizer could you help me out bro and do you have anything lying around to get rid of or just some good advice I'm going to get two tens subs for the back eventually and new 4 inch in the dash two of those and I'm not for sure if the doors have speakers it looks like maybe a set of 6 by nines I am doing a little bit at a time since I'm on disability and christmas is here any good advice man would be appreciated love your channel I watch your videos all the time man
@bigdogbrodavepresents6178
@bigdogbrodavepresents6178 3 жыл бұрын
do what makes you happy... You are on the right track. EXPERIMENT but try not to DESTROY.... Good advice... BE SAFE!!!! BDBD/2021
@bigdogbrodavepresents6178
@bigdogbrodavepresents6178 3 жыл бұрын
DESTROY happens sometimes when ya experiment.... Just be prepared for destroy.... Might mean FIRE!!!!!.... BDBD/2021
@whozaskin3639
@whozaskin3639 5 жыл бұрын
Is this class A or AB? Nice amp either way!
@wal
@wal 5 жыл бұрын
AB
@mexicanrocker1845
@mexicanrocker1845 8 жыл бұрын
I know nothing to do with this video but do you know how much I could sell a pair of rockford fosgate sp-64 punch power 6.5 midbass speakers single voice coil 4ohm thank you
@lazzer408
@lazzer408 3 жыл бұрын
*TO3
@camutodragon1
@camutodragon1 7 жыл бұрын
I know this is an old post but I have some linear power amp that have been sitting . What happened to their big comeback
@wal
@wal 7 жыл бұрын
+Casey Camuto they are making amps that will make you drool...just gotta have the $$...the LP2250 goes for $2250 😱
@camutodragon1
@camutodragon1 7 жыл бұрын
BigDWiz 😢😭😪😰 damn
@HondaATCcom
@HondaATCcom 6 жыл бұрын
Casey Camuto Hey guy’s, I have all 3 new LP amps I’m my vehicle , 2250, 2150, 2075, outstanding amplifiers! Best system I’ve ever had and I’m a 27 year car audio shop veteran and 37 year enthusiast.
@jackklages4617
@jackklages4617 8 жыл бұрын
Also I believe those are to3, not to5, not to doubt you but that's what they look to be. Track down a audio art 100hc, used to3 and had lots of capitannce in it on the power supply and rail side, only touched one but seemed pretty stout.
@wal
@wal 8 жыл бұрын
+Jack Maurice Yessir, I updated with a annotation, but if you are watching mobile you may not see it. They are indeed T-O3's. I blame the flub on recently watching Terminator Genesis...too many T names, lol
@jackklages4617
@jackklages4617 8 жыл бұрын
+Dereck BigDWiz no problem, but strong over built amps, I still want to see a new lp2250 pulled on the dyno, . 250x2 bet it puts out near 2000. Yes I'm on a mobile, I live in the woods and at the moment that's my only choice, how about a old power 1000, I got two.
@wal
@wal 8 жыл бұрын
+Jack Maurice Old RF Power 1000 Mosfet is a beast. I'm going to do the full test soon. My new ultra cap bank will be capable of testing virtually any car audio amplifier up to around 10kW at and ending voltage of 13V or more. I'm working on getting an LP2250 now!
@envisionelectronics
@envisionelectronics 8 жыл бұрын
+Jack Maurice Audio Art H100C doesn't use TO-3 and doesn't use an unusual amount of filtering... to what might you be referring?
@jackklages4617
@jackklages4617 8 жыл бұрын
+Aaron Hammett I know one of them might did, might beboff on the model but one had to3s in it, strong beast. No dealers close to me but one did have them.
@rodneygrant5739
@rodneygrant5739 8 жыл бұрын
how about testing the H K ca260 great amp
@wal
@wal 8 жыл бұрын
Maybe in the future, lots on standby to test now
@johnalenwork53
@johnalenwork53 8 жыл бұрын
that amplifier is efficient
@johnalenwork53
@johnalenwork53 8 жыл бұрын
Agreed
@pgmurray76
@pgmurray76 5 жыл бұрын
I am 3 years too late, but no it is not. For Class AB it is efficient. As for a high power car amplifier it is 10-30% off versus quality Class D, BUUTTT that Class D may not be full range, definitely sounds like crap compared to this and will break long before this amp assuming all are attached to properly matched loads.
@nunyabizznizz7326
@nunyabizznizz7326 3 жыл бұрын
ear candy........i remember the ads
@jackklages4617
@jackklages4617 8 жыл бұрын
Way over built, Ray Raymond knows what he is doing. Can tour synopsis measure output voltage? I'd like to see that. I've been bit by a few amps. The 2502iq is the one who got me the hardest, I wouldn't want to even try the "big" ones, I bet the new could say outdo them only thing close is the pure re us amps
@wal
@wal 8 жыл бұрын
+Jack Maurice I think autocorrect may have affected your comment ;-) . It's Ray Rayfield and I'm not sure what tour synopsis is?? lol
@jackklages4617
@jackklages4617 8 жыл бұрын
+Dereck BigDWiz yep, note5 can't turn it off. Sorry about that. Still want to see one of the new ones
@jackklages4617
@jackklages4617 8 жыл бұрын
+Dereck BigDWiz synopsis = dyno
@jackklages4617
@jackklages4617 8 жыл бұрын
+Dereck BigDWiz sorry, it thinks before me mostly. I try to re-read and correct but a lp got me hyped and I straight posted.
@wal
@wal 8 жыл бұрын
+Jack Maurice It doesn't specifically measure output voltage, but it could be determined by using the Ohm's Law equation
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