NAD 7240PE Vintage Home Receiver - Incredible Dynamic Power
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- Опубліковано 24 лип 2024
- #AmpDyno #AmpTest #NAD
The 7240PE receiver consists of the 3240PE integrated amplifier, with its vast reserves of clean, solid power for the the wide dynamic range of modern recordings, plus an exceptionally sensitive digital tuner.
Power Envelope design
While the 7240PE is rated at 40 watts/channel of steady-state power, its +6 dB of IHF dynamic headroom means that its dynamic power for musical transients exceeds 160 watts/channel at 8 ohms and 200 watts/channel at 4 or 2 ohms. Even with long 200-millisecond tone-bursts, representing the full duration of musical notes and chords, the 7240PE produces an impressive 100 watts per channel.
High-current output stage
The 7240PE de-livers up to 25 amperes per channel to ensure precise electromagnetic control of the speaker’s voice-coil, even with impedances as low as 2 ohms
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I've had a NAD 3240pe since 1989 and I always thought it had a little more power than the advertised numbers, thanks for confirming. It's still running good on a Cerwin Vega 12" subwoofer and the combination makes for some very powerful bass tones.
That´s the beauty of vintage receivers! More vintage receiver dynos please!!!
+gsac12 I'm gonna mix it up. Thanks for da feedback 👍
great video Big D. what's even more crazy is your timing. I am considering buying an NAD 275bee power amplifier for my home and I think you just helped me make up my mind.
I've used an NAD 3240 PE for over 30 years now and It's never been in the shop. The volume control's a bit scratchy now, so I probably should have it cleaned and serviced for anything that may be at risk. Liked it so much I got a 7240 as well.
The power on this thing was always crazy, but what made it great was the quality of the music. Just very impressive all the way around.
Yeow, just got one of these from an old friend, that is really nice to see. I should have it fired up tomorrow. Thanks for the review Mr. BIGDWIZ
👈😎👍
I recently dug out my 30 year old 7240 to pair with a mid- 80s turntable. It was the only amp in my collection that had phono inputs. The 7240 was hooked up to a pair of B&W 803D and to my amazement, it had no trouble driving those supposedly power hungry speakers. Much respect to the NAD designers who put functional integrity above bells-and-whistles specifications.
Wow.... that actual dynamic power is impressive. Cool stuff.
...and yes, it'd be cool to see more of these, if possible.
+MyCatInABox Proton D1200 home Amp video coming up in a few weeks
Dug one of these out of a trash can by someones driveway, brought it home, cleaned it up, checked the offset, Works flawlessly and has for about 4 years, running it into a pair of the smaller advents I dug out of bulk trash pickup, put a set of foam replacements on the speakers and recapped the crossovers, They look great and sound great, found a matching CD player on Craigslist for $35.00, that's my Rig,I think I'm all in around $75.00, Sounds Friggin Great, everyone who comes over wants to play with my "Old" Stereo rig..... There are deals out there fella's, just saw a complete NAD Componant rig with integrated amp and KLH speakers go for $300.00 on craigslist,
Yes! Would love to see more old school home receivers too.
would love to see one of the adcom amps
GFA565. I have 2 of those. Very strong amps. Can only imagine the results.
i use the 555 for woofers and a 545 for mids and highs.
they work great! but thinking another 555 would be nice to run them as mono blocks! lol
Adcom 545 series 1 is considered one of the best amps ever made by some techs in the recording industry.
NAD always made great products that performed well above their claims.
i had the same unit.used it from 1998 to 2008 i think. if i did not use it to drive my bass guitar and electric guitar...it would still be alive. sound is awesome even when playing cassette tapes.
That's pretty amazing.
So you could run two ohm speakers reliably at home. Awesome
I have a friend that has a NAD Amp I've never heard it but the way he go's on about it, thing must be really dang nice. Great job on your videos bro. Never a boring or dull moment 😎
+wade hicks thanks brother Wade ✌️
Bought one of these a couple of years ago, Im using an old set of Advents and sounds phenomenal! I'm not new to hi-fi, had many receivers, amps and preamps and this one is right up there with some of the best I have owned. Yes, I hear they are a nightmare to work on, I hope mine keeps on playing. I had another one with the amp section blown, but the pre section was sweet and I used it as my main preamp for years. I was lucky to find another one in pristine condition and working excellent.
These are jewels!
I bought a 100w per channel NAD recently and was incredibly impressed. I knew it had some dynamic reserve but I couldn’t play it loud enough to clip and still be okay with sitting so close to the speakers in my living room. And then I switched it from 4 ohms to 8 ohms and it was audibly even louder. I’d bet it was capable of over 600w per channel.
Well designed and well built!!
like the vintage home audio dyno's. Love to see more, good work Big D!
Thanks bud! I told you guys I was going to mix it up. I love car audio stuff, but also home, portable and more coming.
Can it really manage 2 ohm setup?
I've got a nice mint pair of those Optimus Pro LX-5's and a Optimus (Pioneer) receiver I bought brand new in 1999! Right now they are my garage tunes, going strong almost 20 years later.
I killed the surround on one of them at the end of the sound test. Nice to see they have replacements on eBay. I'll be getting some and refoaming all of mine. I love these speakers
I bought my NAD 3240PE brand new in 1988. I still own it and will never sell it.
I bought this model about 10-11 years ago for $50 fully working, i moved out of the house but now i got it again :) i loved this thing it's brutal
Have one of these rebuilt and with a 1155 pre, favorite amp to date, endless power and impedance capability and tonally great also, its a keeper amp, their absolute monsters and well built.
Awesome 👏
pretty sure these were around before 91. roommate had one around 89 and he got it used. elegantly simple, everything you need and nothing you don't. I have the proton table radio stereo system made by the same company.
After moving house and not using my 7240PE for many years, I was worried that it wouldn't work anymore. Hooked it up to a pair of ATC SCM19's today, works great albeit with an easily fixable scratchy volume knob. What a piece of kit!!
I just picked up a Realistic MPA 100 for free out of the recycle bin/trash at work. Its a very nice unit and works flawlessly.
I know this brand and have an NAD 208 power amp. More than ample for my speakers. It’s pristine in appearance and performance. I would send it to you for a dyno test, but the shipping would put me in the poor farm! I kid you not. The transformer weighs 37 pounds on it’s on. The wiring in it is point to point and nicely done. I have had it since it was new and I could not sell it on a bet. Treasured it is!
Because of this review,I got a 7250PE receiver just to play around...with Peavey IMPULSE 200 oooold school pro speakers!
More home audio please...NAD, Adcom, Anthem....thanks for the awesome videos!!
Great video D! You just made my day! I used to have this NAD without the receiver (3240). Yea I remember it had gobs of power, I could never really make it clip or distort. But the sound quality never impressed me very much. This amp makes sound when the speakers are turned off and volume turned up. Its fun, check it out!
+kurttug cool, I'll check that out. Easter Egg!
great job man realy like your videos
Thank you for watching and commenting 🤙
I just picked up one of these with some white van tower speakers for $50. This receiver sounds excellent!
These are crazy good units!
my friend has the nad 2600. That thing is a beast.
I have a 7155 and I'm impressed, and also wondering if you could do a review on it if possible. I've had several amplifiers and NAD was a brand i always wanted to buy, now i can say I'm not dissapointed, in fact , I'm amazed, nice clear sound, powerful enough , and has a nice phono preamp as well. A lot for a small receiver.
nice!!! power is crazy on it
Really nice seeing that. i worked at NAD one summer in the warehouse where they had the warrantee repair shop, i did QC inspections of the repaired equipment. I have an old NAD 3080 still in service (140Wpc).
I also have a set of those Optimus LX5II with additionally an old Morel 3" dome midrange filling in 800-8K and 8" Urban Audio (sherwood) sub (for one of my computer/room setup's) powered by an Optimus STAV-3770 receiver (5x100W@8ohms .9%).
(the comment about the lx5's being midrange shy would love these old 90's era morel midranges. i put them in boston acoustics A40 boxes where they sit at ear level reclined, the lx5's are at ear level when i'm upright. the 8" subs are no slouches at home in 1cu' boxes on the floor, they play well below 38Hz [i rewired/built all the passive crossovers])
but my chevy pickup is mostly all a/d/s/ !
+Dave Jo sweet 😎👍
I have a NAD 356BEE amp. I'd love to see you run a dyno on one if you can, as I've been really impressed with the sound quality from it.
when i was young and dumb my grandfather gave me a tube amp with an impedance switch. it went from 4 to 16 ohm. i had a 4 ohm driver hooked up, switch the amp to 16 ohm. it was loud for about 5 minutes.
Love the home audio testing D.🥃
Haven’t done much lately
that is incredible
Sounds Great! Nice Review!
Thanks for watching and commenting!
That amp has got some big NADs!
+Aaron Heitzman lives up to its name then 😝
HES TESTING HIS NADS!!! sorry big D i had to do it! beavis and butthead made me! lol seriously tho awesome home receiver! wish they still made em this good. :) i will say this tho. when you did dynamic on the 2 ohm test i guessed 500 watts. lol almost spot on! unbelievable tho
i had one of those, in 1999, the 7400. got it from a pawn shop for $50
Have a proton integrated amp and separate am/fm radio. Almost identical inside and out to your amp. Must have the same build house. Very happy with mode too. Glad you did a dyno on a product I almost own
+indopleaser I believe they are identical. Proton had "Dynamic Power on Demand" and NAD called it "Power Envelope"
one more thing, did you have the anti clip circuit turned on or off when you did the dyno test
NAD gear was very intelligently designed and performed like much higher end equipment. Having a small receiver or integrated that could handle 2 ohms was unheard of generally. I just set up a 3240PE integrated for a friend while his regular amp gets fixed. It's the same amplifier stage as this receive. Powering a pair of Klipsch RF7 speakers is effortless and has tremendous headroom.
👌😬👍
I still have my 1983 Nad 60W x 2 power amp with a Onkyo preamp sitting in my closet , still using my Cerwin Vega D7`s that I drove with the Nad , The Nad pounded the Cerwins hard never a problem ,, bought the speakers new in 1984 :)
NAD is great gear 👍
Had another look lol , it is a Nad 2155 , started searching my area to get the RCA inputs replaced ...
Correct me if I'm wrong but wouldn't that 2 ohm power output make the rating only a 3db output? Or is that 6db rating for the input?
The 7240 was actually the higher end of two models from its original production year (the smaller being the 7225pe). The 7400 and 7100 models were in fact later models. It's possible that NAD clung onto this as its lowest end offering along with the new offerings in order to give customers more purchase options.
Yessir 👍
Saw one of these at a Goodwill once for $19. I didn't buy it because I was not familiar with it at the time. It did grab my attention, and I studied it for about 15 minutes before setting it down. Wish I would have bought it.
+sylkelster wow, serious deal there!
Hello Williston Audio labs. When the amp delivered ~500W@2Ω what was the time duration of the test pulse?
Had One of these in the late 80s that gave up the ghost in the early 2000s. Just ordered one on eBay today. But I hook up my Boston acoustics to it
Excelente 👏👏 buenas pruebas
Very impressive, I wish I could run a dynamic text on my Onkyo tx-sr604. My plate amplifier gave out on me a while back so I'm using the two front channels of it to run my Polk psw10(plate amplifier no longer works and speaker is unhooked from it and ran directly to the front left channel) and a sundown LCS 12. The Onkyo website claims 225w @ 3ohms, the Polk is running at 4ohms I'm guessing and the sundown is dual 4 wired down to 2ohms. The receiver has the ability to tune the separate channels to play certain frequencies, so the front channels are playing at 40hz with no vocals coming through. it's pretty impressive and at volume 70 out of 100 the sundown looks to be near it's mechanical xmax
This receiver seems to be using discrete output transistors, not those STK packs or any other "amp on a chip or ic" shortcut, which is why it has such good dynamic range, along with a robust power supply.
Bought one last week. Works great and no damage. No idea about the value but I paid only €35,00
Great Vid!
A bud of mine has an old Kenwood (iirc) and it too is only rated at 40 watts, but its a beast!
I just bought a 7240PE a couple days ago, it’s a great little amp! I also have an FP14000 (Lab Gruppen) clone pro audio amp that’s rated at 7000x2 into 2 ohms, I use it to drive a pair of 15 subwoofers in my home…I would love to see an amp dyno video on one of these amps if you can get your hands on one. I run mine at 4 ohms stereo and it has tons of power!
😬👍
Just take the rms voltage.... then calculate the Watts
Had that Receiver paired with Mordau t Short speakers, needless to say I had to keep the volume level in check (meaning between 7 an 9 o'clock) otherwise I would have some nice clacking on that little 5 inch dri er :P But on the headphones this baby has the sweetest sound paired with Grado's. Pure hi fi goodness from the turn of the 80's to 90's period. Now I'm really interested if you guys could bench the 7175PE monster 😀
Interesting that I'm listening to this video over my NAD 3220PE amp.
+mauritsvw isn’t that ironic, don’t Cha think 😬
I got for kefs 104/02 rated at 200w at 4ohms or 100w at 8ohms, would you recommend to put the switch back at 4ohm?
I have NAD 712 sounds amazing I bought it for 10 bucks
My dear friend admitted whe has grown tired of her audio[phile "phase" and traded me one of these beauties for an $18 3116-based amp with bluetooth. Such a marvellous sounding steward of the Wharfedales while the Hafler is awaiting repair.
Wow, great deal for you!!
And for her actually! She just wanted something easy and good enough, and needed space in her garage. ::)
I used to sell these back in the day. Great stuff. You should try to get your hands on some of the bigger PE power amps like the 2200PE or the Monitor Series 2600.
I got my hands on a 2200, and it will be in an upcoming video
More vintage stereos please.
I have one but the volume control, bass, treble, and other buttons do not work. Anyone have any reasons why its not working.
i would love to see some modern receivers / amplifiers, sooooo many woud fail the test i think. and would love to see if marantz claim of 70% guaranteed power when all channels are driven is true. (but you would need 3 dynos for that?)
Very nice review thanks
C U like stinger too
That's pretty amazing. Can that amp be used as a monoblock into 4ohm speakers?
Any chance you'll be testing the NAD Power Envelope 2100?
+mlach2003 I have the 2200, but it may need some TLC prior to the test
This is my primary amplifier. I have it driving a set of Alesis Monitor One studio monitors, and a set of 80's Accusound 3 ways with 12" woofers and Neo magnets. I have never found a better system for what i do. I also have a 7175PE. That thing is dangerous.
I see those all the time at goodwill I'm going to get one
+John Work you see NADs at Goodwill 😱??
Impressive!
+Trix Kemuel not too bad for "40 watts"
Buddy I love your vids, thanks.
Wanna check out another sleeper that knows how to hit take a look at the Sansui AU-7500. Rated ~40wpc, but it'll knock your socks off.
I have one in my desktop system, c.1973. I love it (paired with DALI Zensor 3s).
Cheers from Japan.
I would love to see a Pioneer VSX-D1S on the amp dyno. I've heard those are criminally under rated.
Blown away by this NAD. Might have to start looking for one.
Thanks for watching and commenting!
hey BIGDWIZ what's up with that Boss Phantom 5000 watt amp,lol
1kw dynamic? That's extremely impressive for a 40 watts amp!
+Drakkar Calethiel just a little headroom. Better than a Miata
BigDWiz more headroom than a Miata, love it what a great line. lol
Miata is always the answer
Hello dears, any test for NAD 7140?
I used to own a NAD 2400 THX. Very nice amp indeed. As usual I don't know why the hek I got rid of it.
It stands head and shoulders above any amp at price performance ratio.
The highs dont have harsh definition like amps like Pioneer, Kenwood. The bass is quick like an Audiolab or Kardon amps. I would classify it as neutral sounding. The PE design is the killer indeed, especially with listening to classical music when the contrasts from soft to loud passages can trick most to turn any amp louder.
+roylikesitlikethat I agree. The Proton D1200 is even more impressive. Incredibly powerful!!
I remember the Pioneer home stereo and vehicle cd changers used the same cartridge.
Yessir, very convenient!
🤘 can you test a new nad poweramp ?
I'd like to see what it does with the "Soft Clipping" disengaged?
I was pretty sure I tested it both ways?
Hey have you ever bought a receiver that has scuff marks and cracks on the front panel
i would love to see my 7175pe tested
I guess you could say, that amp has NADs.
tried to see if it can handle 1 ohm?
I request that you do a 70s Technics sa-500.
just curious if you've ever tested the sansui g-33000 from 1979 my father had one but I was to young to appreciate it and now it just sits in a storage room . I've heard they are like the holy grail of the vintage stuff
You do realize what they go for, don't you?
I do believe they are not cheap bottom of the barrel pieces lol. I recall my father telling me there were a limited number made and he said when he bought it in 1979 he had a choice,, buy the stereo or a new car . still has the system to this day lol
It looks like one sold about a year ago for over $7k.
I have a NAD 7400 receiver, what do I need to connect it to my iphone?
RCA to Bluetooth adapter or get an adapter to take your phones output (USBC or Lightning) to 3.5mm them 3.5mm to RCA adapter.
Over 500! Holy moly.
You should try the Proton AA-1150 or D1200 50w and 100w per channel at 8ohm amplifiers with a dynamic head room of 7db!!
+Pedro Mededeiros you must be reading my mind 🤔
No School Like The Old School
Those lx5 lineaum tweeters were great. Have you still got them?
Yes. The mids need refoaming
@@wal I didn’t keep the mids, I transplanted the top tweeter plate onto a transmission line mid/bass cabinet. The original mid always sounded a bit muddy to my ears. 👍
Hello I own this unit. I cut the 4 ac wires to the extra AC outlets last year and did a poor job on marking them. Please be kind, I know it was my fault. My goal is to install an IEC socket and use a better power cord. I have done this before. Is there a way to contact you, offline, or could you reply to which of the 2 Blue wires from the bigger transformer near the back go, and there is a white and a blue wire from the smaller transformer. I Repairman want 75.00 to 100 just to look at this unit. Reaching out for your help. Thank you.
Damb. good power for a small receiver
I almost fell out of my chair!
I have a Kenwood KR 9600. and that Beast weighs at least 50 pounds and I think that's a 100 to 150 watts per Channel. the thing was built I think in the early seventies and it is still kicking out matter fact I'm using to JL Audio 12w6 wired at 6ohms in studio monitors just to keep the impedance close to the horns and mids
Ehren Krause i have owned a few receivers from the 70s, marantz and pioneers rightfully command the high dollars today and are my favorites. I got my hands on a Kenwood of the era and opened it up, something I saw really disappointed me. Jumper wires (3-4) soldered across the board at the factory, indicating a major mistake in the original circuit board architecture. A big no no in the industry. Otherwise most of it was ok.
WOWWW, I USED TO HAVE ONE
tThis is why I still own my 3240pe amp since 1989. A bargain at $430.
Awesome 👏
I have NAD C740 I looked at an online manual it says it can run 2, 4 & 8 ohm speakers but what about 6. I have a bunch of bookshelf speakers but they require 6 ohm. Would anyone know if it safe to use 6ohms?
Yes. Anything above the lowest number would be fine
BigDWiz I contacted the company a few days ago and you answered my question in few hours. Too bad there no clear sign on my unit on connecting a active subwoofer. I've got plenty of passive ones.
Looking at your tests, looks like the amp needs to be re-biased as one channel is slightly more powerful than the other. Both idle current and bias are adjustable on the 7240.
Maybe so, however I've tested a lot of 2 channel amps an always show some discrepancy between the channels. Some more than others for sure.
It would be interesting to see what your measurements are after a bias and idle current adjustment to factory specs.
Electone_Guy the difference is in the soft clipping circuits. these amp boards were built and/or sorted as matching pairs for left and right with very small tollerances.
whats the difference between idle current and bias ?
Just a thought here, Im not too knowledgeable about this stuff but would retro-fitting some bigger internal speaker wires increase this things output at all??
It would not hurt, but I doubt the difference would be noticeable. They are very short runs.
I see. After how good it did I just thought they were possibly bottle-necking the system, theyd HAVE to be the weakest link lol
HashCracker no difference except a thinner wallet.
HashCracker imo the bottleneck is the Power Envelope circuit itself. Just not a big fan of those units. Much prefer the earlier japan 7140 and 2155/3155/7155 non-PE models as the reliability was much higher. The PE models sound fine to a point, but once that secondary/high voltage power supply in the PE circuit is exhausted they can bring about nasty distortion. I point the finger at the Taiwan/Singapore origins, flaky heatsinks and less robust PE power supply to accommodate "+6db headroom."
Andrew Harvel I just got one for cheap today (my first piece of NAD gear) and I think I know what you mean. After preliminary tests I wanted to see what it could do when really pushed, ready to turn down the volume immediately once I heard distortion. Man when that distortion hit, it was probably the nastiest clipping sound I've ever heard (I did have the "soft clipping" off for the tests). Not sure what it's fate will be yet, but it sure doesn't come close to my Heathkit AA-1600 amp. Still, I had it cranking for well over an hour and it barely got warm, not bad at all and certainly no complaints for the price I got it for
Prova amplificatore Advance Acoustic XI 125. Grazie
Whoa!