Marshall Jcm 800 Value?

[Revsynyster]

Hi everyone this is my first proper post, I hope it's in the right section? been around looking on here for a while now but I'm after some advice. I have a Marshall jcm 800 2204 50w in white leather I got this amp about 20 years ago now, complete with 2x. 2x12 cabinets. I just recently got it serviced but it never ever gets used it just sits looking sorry for it's self ha ha I'm sure I checked the serial number with Marshall years ago and it's from 1982. I'm just wondering if anybody knew the value? It's not in immaculate condition it's got a few bumps over the years. It just seems a shame sitting doing nothing. Any help would be appreciated. I can't seem to upload any pics or links to pictures at the moment but will sort that as soon as possible

 

[Mitchell Pearrow]

Hi everyone this is my first proper post, I hope it's in the right section? been around looking on here for a while now but I'm after some advice. I have a Marshall jcm 800 2204 50w in white leather I got this amp about 20 years ago now, complete with 2x. 2x12 cabinets. I just recently got it serviced but it never ever gets used it just sits looking sorry for it's self ha ha I'm sure I checked the serial number with Marshall years ago and it's from 1982. I'm just wondering if anybody knew the value? It's not in immaculate condition it's got a few bumps over the years. It just seems a shame sitting doing nothing. Any help would be appreciated. I can't seem to upload any pics or links to pictures at the moment but will sort that as soon as possible

Welcome to the forum, you need a certain amount of posts before you can upload photos, not sure what the value would be, but I do know that the GC by my house has a 2205 with matching 412 cab in white and they want 2,200$ for the half stack , there are more knowledgeable members here than I am to give a better assessment of it’s worth

 

[hpharley90]

I would suggest going to reverb.com and see what they are going for there as a start.

 

[Gunner64]

Give ya $50..it's old..lol..

 

[MarshallDog]

Welcome to the Forum...

I would say a 2204 in great condition of that year with no mods might bring 1400-1600.00. As the condition degrades so does the price obviously. Add great condition cabs and speakers, maybe another 400-600.00 per cab.

 

[Revsynyster]

Thanks for the welcome! I will add some pics when it allows then, ok cool price was sort of what I was thinking, decision if I should sell or not is the hard bit now!

 

[Mitchell Pearrow]

Thanks for the welcome! I will add some pics when it allows then, ok cool price was sort of what I was thinking, decision if I should sell or not is the hard bit now!

Myself I would keep it, I do love me some white marshalls

 

[Revsynyster]

I have just had a really good play on it and decided not to sell, it just sounds too good, just got to make sure I get some use out of from time to time, I have a quick question on the speaker impedance, the cabs are 8ohms each do I set the amp to 8ohm or 16ohms if I'm using both the cabs? I only really used to run it on 8 with one cab connected.

 

[K2JLX]

I have just had a really good play on it and decided not to sell, it just sounds too good, just got to make sure I get some use out of from time to time, I have a quick question on the speaker impedance, the cabs are 8ohms each do I set the amp to 8ohm or 16ohms if I'm using both the cabs? I only really used to run it on 8 with one cab connected.

Both 8 ohm cabs will be 4 ohms. One alone 8.

 

[Revsynyster]

Just had the back off the cabs and they are celestion g12-65 the impedance says 15ohms? I take it these won't be the original speakers? Should I run the amp at 16ohm with these?

 

[Gunner64]

ok cool price was sort of what I was thinking,

 

[Gunner64]

The $50?...cool. haha..

 

[Revsynyster]

The $50?...cool. haha..

Ha ha

 

[MarshallDog]

Just had the back off the cabs and they are celestion g12-65 the impedance says 15ohms? I take it these won't be the original speakers? Should I run the amp at 16ohm with these?

They are probably wired in parallel which means the impedance is 8 ohms. Run one cab at 8 ohms and you set the amp to 8 ohms. Run two 8 ohm cabs together and you set the amp to 4 ohms.

 

[Revsynyster]

They are probably wired in parallel which means the impedance is 8 ohms. Run one cab at 8 ohms and you set the amp to 8 ohms. Run two 8 ohm cabs together and you set the amp to 4 ohms.

Perfect thanks, just checked wiring diagram and it is parallel, will it cause and damage if they aren't run on the correct impedance? Say ran both cabs on 8ohms?

 

[Gunner64]

No. You have to match impedence. 2x 8 ohm cabs you need to run the amp at 4 ohms..you can overheat and damage the output transformer, smoke tubes..ect..not recommended.

 

[Revsynyster]

No. You have to match impedence. 2x 8 ohm cabs you need to run the amp at 4 ohms..you can overheat and damage the output transformer, smoke tubes..ect..not recommended.

I won't do that then ha ha thanks

 

[anitoli]

Best thing to do here is to measure the cabinets impedance, don't guess this is how you get into trouble.

 

[Revsynyster]

The cabinet says 8ohms on the back but I'm not sure if the speakers are the factory speakers?

 

[Gunner64]

The cabinet says 8ohms on the back but I'm not sure if the speakers are the factory speakers?

You need to check the cab with an ohm meter. Like anitoli mentioned.