A Look Inside the NEW Marshall JCM 800 Studio
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- Опубликовано: 12 сен 2024
- Come and take a look inside the all new Marshall Studio JCM 800 Series.
I LIKE these amps and this is no bashing on the new Marshall Series! So please don´t get me wrong! If you are like me and want to see what you get from the inside. This is for you.
Times, Technics and Rules have changed in this century and this is how it looks like today.
Also used: Fender American Vintage 62 Stratocaster, Ibanez Tube Screamer 1985, Marshall Guvner Pedal Clone.
Funny, when Bugera makes amps like this everyone shakes their heads, but with marshall there are lots of starry-eyed fans.
These videos are worth it, I wish I could give you 1 million likes
Thanks man!!
It is very similar in manufacture to my DSL20HR, the same 3 12AX7 tubes and 2 EL34 JJ.
Indeed it is! It is even more similar to the Origin Series Amps. Thanks for your commen!
It does not have a bias pot because it has cathode bias. Also, the tube sockets are mounted on the chassis and wires are run from the tube sockets to the circuit board.
Thank you for watching! I fear your not right... It´s Fixed Bias so say´s Marshall at Namm. Haven´t seen a schematic until now nor traced out the circuit. So by now I have to believe what they say.
The tube sockets ARE circuitboard mountet no wires sorry...
It's definitely cathode biased no doubts about it. 150 Ohms cathode resistors per tube.
Probably low voltage on output tubes lowers the power from pair of EL34s from 50 watts to 20.
I played one of these (but the combo) recently, and am now seriously considering getting the head as it seems like a good fit for what I need, so thanks for the video Mr. Lobster. ☺
as with a lot of videos on these Studio amps, it's always a pleasure to see these dullard amp-experts come out of the woodwork to malign these amps as 'cheap Chinese junk', and to get a used 'real' amp instead. interestingly, the 'real' amps they point to are things like used 100W heads, which are exactly the opposite end of the market these amps are catering to! 😩
these amps are designed to give the JCM800 (or Plexi, or Silver Jubilee) FEEL for ordinary players who DO NOT play to massive crowds (which, putting your dreams aside is most of us), in a manageable package...they're not supposed to be exact replicas. what sort of fun can someone who plays small bars or even Blues Jams have with a 100W head and 4x12 anyway? aside from getting sideways looks from everyone as soon as you wheel your gear in, you'll almost certainly be asked to turn down if you're even halfway close to getting those types of amps in 'the zone'.
yes the Studio amps are pricey, and I would also argue that they could be more competitive in this area, but they also have some handy modern features built in to help alleviate the steep price of admission. I haven't tried the SV20 yet (didn't like the Jubilee when I tried it), so I'm actually going to compare the two today.
Thanks for chiming in supreflea72! I´m from 1967. and had a LOT of original Marshalls from that era on until the end of 89. I had several of them on the bench long before much commenters are born or anyway near around. Sold one of my last ones in 2018. I know these amps. These days I do custom handwiring amps for selected customers.
The studio series sound closer to the originals than any and better than some of them. Its like you said - these are made to not breaking your shelf or back lugging around in your studio.
The construction is correspondending to this requirement and it will withstand a lot more. If it breaks - I don´t mind I can fix it. Have fun!
This is so perfectly worded! Have you tried sv20? I'm really curious.
@@MrJLobster @Angry Empath cheers man...bit of an update, I ended up going with the SV20 head and I love it! it has a definite character, and plenty of balls/punch as well. I run a JHS Little Amp Box into the effects loop to tame the volume at home, it works well.
actually, since my last post I also come across a Marshall Astoria Custom combo that I picked up for a great price, and those amps...wow, just wow is all I have to say! ☺
@@superflea72 Congrats man! Enjoy.... And yes those Astorias are still a bit of a secret.
@@monkeymonkerson Thanks for your kind words! I haven´t tried the SV20 yet but I will.
Thanks for sharing, looks like the owners have something to mod!
It may be that Marshall has used a DC heater supply for the pre-amp tubes. Or at least V2 and V3. That could be why only V1 has a shield. They have been using DC filament supplies since the JCM2000. If it were mine I would replace those pots with good quality ones as soon as the warranty expired.
It's a 5yr warranty,so I wouldn't worry about it.
Are people serious about not liking everything board mounted onto pcb’s? News flash, this is common construction for 40+ years now! Many of the classics built in the 80s onwards follow this construction method. My Carvin X-100B is built like this and still works fine
I have built some in my life....
Would I buy a pcb based amp?
Of course I would! - anytime.
PCB based amps are for the fearless. For those who can distinguish a good sound from a mediocre only using our HEARING..
Regardless the construction - I can fix it!
@@MrJLobster the only real difference I have seen repairing circuit board amps vs turret board construction is you have to remove the circuit board to repair, whereas turret boards you can solder in place
I do like the construction of these for a mass produced amp vs some of the other junk out there. Nice touch with keeping high temp resistors high. I like the boards being separated as wiring pots to the main board and then bolting it to the chassis is a complete pain and a failure risk. If worst came to worst it looks like most of the small boards with jacks or pots could be replicated by hand-wiring. The only downer for me is mounting the tube sockets directly on the board. Never been a fan of that. Cracking amp though. :)
Mark - you got it in my opinion!
The tube sockets are not directly mounted to the board. They used very long contact pins (1,5 -2cm) so that the board isn´t heated up too much and the air can flow easily through the contacts underneath the sockets.
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@@MrJLobster the amps are solid had my SV almost 2 years and the SC 6 months I never read not one going down on the Marshall forums
Nice Vid/ All in all are you happy with the amp? Does it deliver?
Hi Yohai Shelef! I had it on my working bench and I had the possibility to play it at all volumes. It does deliver no question! I would be very lucky with it. If you love the JCM Sound look no further. I´s not a boutiqe amp but it doesn´t have to be. There are some drawbacks -but the originals had drawbacks too.
MrJLobster Thx for the honest and helpful reply!
Well, seeing some gut shots has turned me off. Yeah, made in England, but everything is board mounted and quick connected... and those transformers are tiny.
This new series includes some combos doesn't it? Those things will shake themselves to bits
Best combo I ever owned they rock and sound pretty big.
No bias pot could mean that it’s cathode biased. I have the SV20, and it’s of similar construction. Coming off a 1987x clone, I’m not dissatisfied with the tone of the SV20 in any way.
I agree the fact it's missing real POTS is a downer, especially since they are pushing the whole "made in the UK" thing. While it sounds decent the build looks kinda cheap vs the price. I bet it's assembled in UK but made in Vietnam. Better off with an Astoria Custom used for $1400-$1700, handwired old school. 30 watts. Unbeatable. That said given the Studio is cathode biased I don't see why you can't drop kt66s in there for a different flavor. Just like the astoria.
Thanks for watching! As I Mention to T Newton It may be possible cathode biased but Marshall says at Namm that they are Fixed Bias.
looks like a good amp ! the only difference with a hardwired amp is the printed board. Good components and simple circuitry (unlike new Fender amps) looks pretty repairable to me.
Thanks for your comment Cozmovox!
Don´t see any difficulty in repairing the board if it were ever necessary.
Honestly I wouldn’t mind seeing more 20w single channel PCB amps like the 800. While I love hand wired if it’s true what you say about being cost effective to replace I wouldn’t mind. Only if the tubes are chassis mounted and the transformers are larger!
Edit: or maybe a combination of hand wired and PCB
Btw. The JCM 800 Series Amps where always been PCB based amps….
MrJLobster yes I’m well aware of that. I’m just saying I see nothing wrong with such a thing so long as the circuit is kept simple like an 800.
At the price they sell it, they must have a huge margin!
How does the LOW/HIGH power switch works? is ther a biult in attenuator (with true hi wattage resisotrs) or is it operation/voltage changing?!
thanks for watching Pedro! It works very well in my opinion. The EL34s are working in Triode mode in the 5W Setting. It is certainly not possible to crank the Amp gain and master volume in your home studio like some may hope to. It´s ferocious loud and you will fiddling the master between 0,5 and 1 as it would be on a 100W mastervolume amp.
If you bring in the efffectloop (even without an effect) it dampens the amp down quiet a bit so it works for me with Overdrive Pedals in front oft it.
That's no JCM. I have no problem with PCBs if they're well-designed. I'm not even opposed to high voltage mosfets used if they aren't being overdriven (cathode follower, fx loop), but opamps have no place in a tube amp.
The op-amps are used to switch the hard Bypass Relais to switch the effects loop in and out and to Buffer the in and output signal of the effect loop. -As far as I recognize.
verified that this head has poor quality polyester capacitors and cheap output transformer. Do you think it is worth replacing them and what benefits would there be?
I think the Studio 800 sounds as good as it get´s.
No I would not recommend replacing the capacitors in a perfectly good sounding amplifier.
Changing the OT to a better one would make the amp louder, stiffer with more headroom and as a result it could be that a choke become necessary also. I don´t know if that is something we assoiciate with a small amp.
It may or may not be as roadworthy as it´s predecessors from the times in the past -but the word "studio" should imply the use it is intended for.
@@MrJLobster thank you my friend
ruclips.net/video/UOuUsrDabeg/видео.html Here is the inside look of the older 2525h mini jubilee...
For the same price I can buy an old JCM 800..
Yes you can but maybe you can´t carry it.....ouuhh!
And maybe those 35 year old capacitors will not be at their best...
@@hydorah Those caps are simple to replace IF they are truly bad unlike this crappy head.
@@kirkdecker6228 I don't just mean the big filter caps. I mean throughout - And PCB amps can be serviced to component level. My home amp is a PCB amp a 20 watt JCM2000 head from 1998. Still going strong. I have a JCM800, JCM900, 6100 even a JMP (on original mustard caps), I love old amps and new amps if they've got the tone. Why are you labelling this as crappy?
@@hydorah I think he's referring to the increased focus on using cheaper components over the years in order to turn a profit. For example, soldering pots onto a pcb definitely does not scream quality to me.
cool bro. what camera did you use to shoot ( from 0.05 to 0.58 ) !!
Canon EOS 1200D borowed from my wife (but don´t tell her!)
@@MrJLobster HHH No worries bro. i wont. thanks
Great 👊
Printed circuit boards and composite wood and hand wired cost... who does Marshall think they are, Fender????
KULT 🎶🎙
Thank you for the Video. Does anyone know who makes a 20 watt Marshall JCM 800 clone with effects loop, 5 watt option, DI out with higher quality components ?.
KLD JCM 25 LESS THAN 300 BUT YOU WIL NEED HEAD CAB I HAVE TWO THEY ARE QUITE GOOD
Ceriatone
Those transformers looks so cheap. Now I am seriously considering Ceriatone.
Wrong, you shoud have considered Ceriatone WAY before seeing this
Big transformers doesn't necessarily mean better. This is only a 20W head after all and isn't a heavy channel switching amp
Still Ceriatone is a better choice
CERIATONE ALL THE WAY over this !
Ceriatone 2203 over Marshall JCM800!
I want a bias pot.
Is it cathode biased ? Cuz no bias pot
Hi thanks for watching! Haven´t got the specific schematic yet but it seems to be... the manual says nothing about it.
The amp isn´t in my workshop anymore..
jeez the transformer looks like a toy
This is so sad. Tube sockets soldered directly to the pcb and the cheap pots. Same quality as my dsl40c. My dsl40c lasted 5 months . So glad I didn't buy one of these new heads. The $1300 price is overkill. I paid less than a grand for my original jcm800 2203 from 1983 8 years ago. Anymore though I've decided its handwired amps for me or nothing for the simple fact of serviceability alone
My DSL 40c has the power tubes mounted to the chassis. I can't believe they mounted them on the board in this amp. Didn't they learn their lesson with the JCM 2000's. I'll just buy a vintage JCM 800 and save myself the headache.
The tube sockets are not directly mounted to the board. They used very long
contact pins (1,5 -2cm) so that the board isn´t heated up too much and the air can flow easily through the contacts underneath the sockets. So - they have at least learned something.
@@MrJLobster Good to know. Now I just need to figure out which ones gonna sound better with a strat
@@firewalker6712 the 800 does the trick for me (clean and crunch) the plexi - not so much. But I´ ve played the JCM 800´s myself more than 30 years so I´m biased..
@@MrJLobster How does the 800 take a fuzzface?
@@firewalker6712 Think you´re fine with a fuzz into the "low Input" - master wide open...
When you look at the inside, and realize that everything is most likely mounted to the PCB:s somewhere else ( a cheap place ... ) the whole hype about "Made in England" kinda shrinks drastically, and you pay a hefty amount for midget transformers and prefab PCB:s "assembled" in England.
As someone said, a major margin for Marshall. Clever of course, since many takes the bait an open their wallets thinking it's awesome.....
And it is awesome, but it could have been awesome with these internals assembled in Vietnam as well for a little more than half the price...
Exactly my thought too , I have the Marshall origin 20 and its pcb board almost looks exactly like this " Assembled in England" Marshall !
Watch a good long Marshall factory tour. All made right there in England. PCBs are populated right there at Marshall UK.
I doubt it will last 30-40 years
Explain
@@Mwhbmnabjms because of those small components and frail pcb. Electrolyte capacitor need to be changed periodically lets say 10-20 years, those vertically mounted cap are harder to change than point to point construction or simpler construction in jcm 800 bigger brother
The small pcb mounted pots, and also pcb mounted tube socket will likely fail and need to be replaced
Even if the amp last that long, it is way harder to maintain than ptp or classic marshall reissue circuit style (jtm45 & 2204 reissue for example). Similar amp like boogie are nightmare to work with if they once have a problem, even though that amps are reliable
@@jannatinkarlen8702 frail pcb? I believe there’s lots of vintage solid state using pcb even Marshall and it last till today that wouldn’t be a problem as long as the heat sink is capable to handle/manage the heat this is the number 1 failure in Amp industries. Even todays some of the amp didn’t last few hr not to say years due to heat the solder melt itself/burn etc.., some even managed it very well they even compact it to micro amp. Orange is the best example. capacitor is normal but today’s cap is not like the old days much long lasting more than the oil/paper type. Especially the resistors almost bullet proof due to higher rating .But i agree when its time to change a bit harder.
Don't make em like they use to. 😞
You should see the inside of my Marshall 4140 Club and Country. Or my Hylight Hiwatt DR504. This toy is Chinese junk.
This is how I make my own amps. I´m shure you like These.
ruclips.net/video/vi_H0qtsqLg/видео.html
ruclips.net/video/CYN5pI1vgtw/видео.html
ruclips.net/video/bCDHlltVetA/видео.html
Thans but not thanks.
Pure junk this studio serie. Jcm800, sv20 and the new jtm.
Cheap labour, cheap part, twice the price of the dsl20, but no more quality.
I have build a ceriatone 2202hw (jcm800 clone, 20 watts), muuuuuuuccchhh more quality, and half the price.
Throwing away more and repairing less is not sustainable.
I´m with you Del Wright. All electronic components on boards will be separated and recycled where I live. It is possible and should be done at least everywhere on this planet. There is a reason to handwire things the old way but on the other hand many of those factory workers where exposed to all kinds of toxic fumes and substances all day all live long wich we know today was a crime and caused cancer and other diseases to many of them.
Sorry , but its just a cheap china toy . Made disposable like a bic lighter . They make HUGE profits on these . Barely 100 bucks of parts . Add 50 for shipping and labour ...... Then get over 1200.00 $ Most get rid of them after a week .
@@jboyce92 But then sometimes we have to overlook the construction vs if it sounds good all is well . It is still a Marshall .
Save your money, a DSL20 sounds just as good for a fraction...