Tip & How-To about Denon Audio Players & Recorders

Denon VPROT Problem.

I posted a question regarding a Denon RCD-M37 DAB, which after a repair to the sub power supply transformer, came up with VPROT after a few mins use. After very careful measurements I found that the -12Volt line coming from the power regulator board situated behind the mains transformer was measured at 10.5Volts. It is necessary to replace the LM7912 regulator. Whilst with this board out check soldering and all other components. Normal operation has now been restored. I hope this will help regards Paul R.

Posted by on

Audio Players & Recorders Logo

Related Topics:

Related Questions:

1 Answer

Can any one advise me DENON AVR 1906 stanby power supply voltage check points values & sub transformer in/out voltage values..?

If you wish to get some details; check the site linked here. Pull up older posts.
Circuit diagrams of SMPS section of many popular brand devices are given. Search the site by type in the "brand name" of your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Jun 25, 2016 | Denon AVR-1906 Receiver

1 Answer

Hi can you tell me that impedence on JBL TLx4 speakers- i need to know if they are compatible with my denon RCD M37 dab player thanks

Is it JBL TLX 420 then its impedance is 4OHMS. You cant connect these speakers to denon rcd m 37, because its output impedence is 6 to 16 ohms.

Jul 04, 2011 | JBL PSW-D110 Speaker

1 Answer

what type of sub-woofer can i add to my denon rcd-m37 system? (passive or powered). Is this information free or not.

Free or you can tempt us with $$. Your choice.

Register and download the manual for free at audio.manualsonline.com


Self-powered would work but it would have to run on full-range amplifier (from the speaker posts) or Line Level signal (from the OUT RCA jacks) because this unit has no Sub-specific output. It's no bigge as the sub would naturally discard the higher frequencies via its own amp's and speaker

Feb 22, 2011 | Audio Players & Recorders

Not finding what you are looking for?

2,675 people viewed this tip

Ask a Question

Usually answered in minutes!

Top Denon Audio Players & Recorders Experts


Level 3 Expert

5700 Answers

The Knight
The Knight

Level 3 Expert

76466 Answers


Level 3 Expert

85239 Answers

Are you a Denon Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions