Denon 3805 OSD and channel db


New member
Username: Fishcca

Post Number: 10
Registered: Nov-04
hello all-
I am very happy with my new 3805, but am wondering if anyone knows how to calibrate the db level per channel on the OSD. I can go anywhere from +6 to -6 per channel. Now, I left it at 0 (default) for each channel, but I am disappointed by how loud it will play. Would setting their db levels to - 6 db get more loudness potential from my speakers? Thanks!

Bronze Member
Username: Fishcca

Post Number: 12
Registered: Nov-04
Anybody Worked with this receiver before?

Bronze Member
Username: Riches1

Atlanta, GA US

Post Number: 66
Registered: Apr-04
I have the 3805. The easiest way to do this is to get the calibration microphone ($60 at crutchfield) and let the 3805 calibrate itself in the auto setup mode.

If you want to do it manually, measure your listening distance from each speaker, put that into your setup mode, then use an SPL meter ($30 at radio shack) and measure the actual sound level using the 3805's built in test tones is the same for each channel. You may want your center channel set about -2dB from your Left and Right Front. And you would want to set you dB level to +6, not -6 to increase your sound. I have mine L&r set at +2 for the left and +3 for the right because the right is about .5 ft farther away. Hope that helps.

BTW - what speakers do you have and what are you listening to that you can't get it loud enough?
What volume level are you at? My 3805 would blow the back wall of the house off if I'm not careful!

Bronze Member
Username: Fishcca

Post Number: 13
Registered: Nov-04
Thanks! I will get one of those mics eventually. I really wanted to learn how it works as well. I am probably playing them too low as I have seen the OSD speakers set to -4 db today. I was playing Twister the movie when I was disappointed about the volume leve. Whil I did not have the sound all the way up for more than a second for testeing.. ( so it needs to be set more at the +3 range to get more out of the speakers?)

below are the full stats of my 5.1 set up. Thanks for the advice and any more that you might have:

Velodyne CHT-10
Frequency Response:28Hz-120Hz
High Pass Crossover:Passive 85Hz
Low pass crossover: 40Hz-120Hz
Cabinet (H,W,D) 16.25" x 15" x 21"
Frequency Response 28Hz-120Hz (±3 dB)
High Pass Crossover Passive 85Hz
(6 dB/octave slope)
Low Pass Crossover 40Hz -120Hz (12 dB/octave, 24 dB ultimate)
Amplifier 375 watts
(Class A/B) 150 watts RMS
Woofer 10" forward firing
Magnet 40 oz.
Voice Coil 2" four-layer copper
Inputs Line-level and speaker-level
Outputs Line-level and speaker-level
Warranty Two years (parts and labor)
Weight 53 lbs. (approx.)
Center Channel
LCR60 S3

Description 2½-way vented-box system with magnetic shielding
Dimensions Height: 175mm (6.9in)
Width: 460mm (18.1in)
Depth: 305mm (12.2in)

Net Weight 9.0kg / 19.8lb
Freq. Response 70Hz - 22kHz ± 3dB on reference axis
Freq. Range -6dB at 55Hz and 42kHz
Sensitivity 88dB spl (2.83V 1m)
Normal Impedance 8 ohms (minimum 3.0 ohms)
Power Handling 25W - 120W into 8 ohms on unclipped programme
Drive Units Unit 1: 1x 25mm (1in) metal dome high-frequency
Unit 2: 1x 130mm (5½-in) woven Kevlar cone bass/midrange
Unit 3: 1x 130mm (5½-in) woven Kevlar cone bass

Finish Cabinet: Black Ash or Sorrento (light oak) vinyl
Grille: Black Cloth
Dispersion Description: Within 2dB of response on reference axis
Horizontal: over 20° arc
Vertical: over 40° arc (Units horizontally in line)

Harmonic Distortion 2nd & 3rd harmonics <1% 70Hz - 20kHz (90dB spl, 1m)
Crossover Frequency 400Hz, 4kHz
Max. Recommended Cable Impedance 0.1 ohms

FRT Floor Speakers

Frequency Response (±3dB): 48Hz - 22kHz
Recommended Power Amplifier Range: 15 - 150 watts
Sensitivity: 88dB
Impedance: 8 ohms
Crossover Frequency: 2800Hz; 24dB/octave
(H x W x D): 36" x 8-1/2" x 8-3/4"
(91.4cm x 21.6cm x 22.2cm)
Weight: 34 lb each, 15.5kg each

Surround Speakers
Overall Frequency Response 49Hz-27kHz
Lower -3dB Limit 59Hz
Upper -3dB Limit 26kHz
Nominal Impedance 8 ohms
Recommended Amplifier Power 20-125 w/channel
Efficiency 89 dB
Crossover 2.35kHz between mid-bass drivers and tweeter;
2nd order HP/LP complement. Mylar bypass capacitor in HP
Inputs 5-way binding posts

Bronze Member
Username: Riches1

Atlanta, GA US

Post Number: 68
Registered: Apr-04


You should be hearing some loud sound based on your speakers.

Yes, try setting you front Left and right at about +3.

The mike is easy. You plug it into the receiver, sit in your primary listening location, go to OSD and press Auto Setup and let the 3805 do its thing. Check out for a detailed review of the 3805.

Bronze Member
Username: Fishcca

Post Number: 14
Registered: Nov-04
Great! I appreciate it and I will look up the link. Just for the sake of relationships between db's and speakers,I have a question for you: How far away are your 2 surround speakers and what db levels have you set them?

Thanks again, I will go read now...

Bronze Member
Username: Riches1

Atlanta, GA US

Post Number: 69
Registered: Apr-04

The surrounds are about 4 feet an 10 feet from my primary listening position. The auto calibration wants them set at 0 and +4, but I have overriden that and set them both to 0.
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