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FDP Forum / Miscellaneous and Non-Fender Topics / WHY Would a Digital Head Need a Speaker Load to Use it?

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5Strats
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Edmond/OKC

GospelBilly!
Sep 4th, 2019 05:51 AM   Edit   Profile  

I bought a used Marshall Code 100 head recently, primarily for headphone practice without plugging the head into a speaker cab.

I "finally" read the manual yesterday and there's a warning towards the back stating to always connect the head to a speaker cab before using.

W-H-Y? This makes no sense to me whatsoever (NOTE: I KNOW this is the strict rule for tube amps).

Maybe Peegoo or another expert can weigh in on this issue. ME NOT GET!

Gaukdawg

Ohio

Say what one more time!
Sep 4th, 2019 06:22 AM   Edit   Profile  

I'm not an expert by any means but this is still an amplifier and it expects a load from a speaker even though it does not use tubes for the power section. I think there are some of the digital heads that do not require a speaker like the Yamaha heads.

Peegoo
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If irritation occurs

discontinue use.
Sep 4th, 2019 06:40 AM   Edit   Profile  

I looked at the Code 100/100H manual, and it contains contradictory language.

In the front panel description it states, "Use this mini jack socket to connect headphones for silent practice."

And later it states "Never use a Code 100H without a speaker cabinet connected."

This tells me both amp models (100 & 100H) have the headphone jack, but the H model has a different circuit that keeps the OT in the circuit when headphones are plugged in. But how does "silent practice" work with a speaker cab connected?

Perhaps the speaker cabinet warning is a simple oversight on Marshall's part that shouldn't be in the manual at all.

I'm gonna do some digging. As an attorney--you've probably seen contradictory language in contracts before...and it is always construed against the drafter :o)

(This message was last edited by Peegoo at 08:51 AM, Sep 4th, 2019)

reverendrob
FDP Data Goon
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She hath it all,

& hath no need of thee.
Sep 4th, 2019 06:42 AM   Edit   Profile  

My guess is that it's a "plug in a cab before turning on" - that doing so while it's on might cause issues if it's running no-load.

But I'd probably email Marshall on that one.

If you can't run it without a load, that's ...poor design on a SS amp IMO.

Peegoo
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If irritation occurs

discontinue use.
Sep 4th, 2019 06:48 AM   Edit   Profile  

Yeah, there's contradictory info on the Web in the discussion groups too.

Email Marshall and ask, here

contactus@marshall.com

And save that email in case the amp cooks itself after you've followed their instructions :o|

Leftee
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VA

Sep 4th, 2019 07:14 AM   Edit   Profile  

I think Rob has it right.

5Strats
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Edmond/OKC

GospelBilly!
Sep 4th, 2019 07:20 AM   Edit   Profile  

Thanks so much gang!

I'll go on the Marshall website and see if I can pose the question via email or otherwise.

ps - I also want to use this head for direct recording in my little home studio. Having have the head connected to cab would make things more cumbersome (unless I get a cab simulator unit).


5Strats
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Edmond/OKC

GospelBilly!
Sep 4th, 2019 07:23 AM   Edit   Profile  

Thanks for the email address Peegoo!

Leftee
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VA

Sep 4th, 2019 10:46 AM   Edit   Profile  

So... how does it sound?

5Strats
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Edmond/OKC

GospelBilly!
Sep 4th, 2019 01:56 PM   Edit   Profile  

It sounds good, as long as you tweak the presets or program your own. I've only used it with headphones so far.

I emailed Marshall this morning, but haven't heard back yet. Do you think they have other questions to answer before they get to mine? (:oD

SonicBlue

Sunbury-on-Thames

Sep 4th, 2019 02:57 PM   Edit   Profile  

^^^ Yep, along the lines of "I've bought a Marshall, so why don't I sound like Hendrix?"

Peegoo
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If irritation occurs

discontinue use.
Sep 4th, 2019 04:50 PM   Edit   Profile  

Marshall is sleeping right now.

He'll reply once he wakes up and has his tea and biscuits.

reverendrob
FDP Data Goon
Moderator

She hath it all,

& hath no need of thee.
Sep 5th, 2019 03:51 AM   Edit   Profile  

Keep in mind as an example, the DSL1 head manual is written similarly, with confusion.

You can run *both* the line out/cans and the speaker at the same time if you so desire, just...can't hotswap a speaker in/out without cycling power.

5Strats
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Edmond/OKC

GospelBilly!
Sep 5th, 2019 05:07 AM   Edit   Profile  

Here's the response I received from a Marshall customer support administrator:

"We recommend all our amp are run with a speaker connected as this could damage the power supply or power amp within the amplifier."

Any recommendations for load boxes or cab simulators that don't cost a heap-O-cash?

5Strats
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Edmond/OKC

GospelBilly!
Sep 5th, 2019 06:33 AM   Edit   Profile  

The Two Notes Torpedo Captor looks good, but it costs $250 which is what I paid for this amp used.

BUT I could also use this load box/cab sim for any of my tube heads (assuming the ohms are compatible).

Two Notes Torpedo Captor - 8 Ohm

(This message was last edited by 5Strats at 08:35 AM, Sep 5th, 2019)

Leftee
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VA

Sep 5th, 2019 07:31 AM   Edit   Profile  

That’s really a boilerplate answer. I’m not believing that is true with a SS amp.

Mike DeTorrice
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USA

Sep 5th, 2019 03:38 PM   Edit   Profile  

"That’s really a boilerplate answer. I’m not believing that is true with a SS amp."

I agree. That's my thoughts, also.

Many years back, Gallien-Kruger built a solid-state/transistorized guitar amp that incorporated an output transformer (something normally not needed for a solid-state power amp), but they did this because they felt it added a key "classic tube amp" feel to the amplifier. I don't know whether some set up like that would call for a load always being on the amp or not.

Mike

5Strats
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Edmond/OKC

GospelBilly!
Sep 6th, 2019 05:46 AM   Edit   Profile  

UPDATE - I exchanged the Marshall Code 100H for a Line 6 Spider V 240HC head. Considering my general dislike of Line 6 amps, this is a bit shocking.

The Spider V 240HC sounds as good (or better) than the Code 100H and it has speakers for low volume practice (the Boss Katana 100 heads also have speakers). It also has drum loops and a looper.

However, unlike the Code 100H, the Spider 240HC is a full size head so it takes up more space.

Leftee
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VA

Sep 6th, 2019 07:35 AM   Edit   Profile  

Cool!

That has always been a tempting (to me) thing with the Katana 100H. That internal speaker.

Peegoo
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If irritation occurs

discontinue use.
Sep 6th, 2019 12:42 PM   Edit   Profile  

A friend of mine gigged with one of the original 1x12 Spiders for five years. She always got killer tones out of it and it never went down for service.

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FDP Forum / Miscellaneous and Non-Fender Topics / WHY Would a Digital Head Need a Speaker Load to Use it?




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