Use DSL40CR in standby mode (as a preamp) without speaker connected


Hi, I have DSL40CR and want to use it as a preamp only, without connecting to a speaker, since I want to use its speaker with some other power amp. Can I safely use the DSL in standby-only mode? 

asked 11 Jun 2024 at 01:07 PM

Igor Romanovsky
Answers: 1



Using the Marshall DSL40CR in standby mode as a preamp without a speaker connected is not recommended. Tube amplifiers like the DSL40CR are designed to have a load (speaker) connected when powered on, even in standby mode. Operating the amp without a speaker can cause damage to the output transformer and other components.

Here are some steps you can take to use it safely as a preamp:

Use a Load Box: Connect a load box that matches the amp’s impedance to the speaker output. This device will safely absorb the power from the amp, allowing you to use the preamp section without a speaker.

Speaker Emulator: Some load boxes come with a built-in speaker emulator, which can be useful if you want to send the signal directly to a mixing console or recording device.

Check the Manual: Always refer to the amplifier’s manual for specific instructions on operating modes. The manual for the DSL40CR will provide detailed information on the proper use of the amp.

I hope the information may help you. 





answered 14 Jun 2024 at 05:01 AM

Dennis Leon
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