I am looking at a used Johr and would like to try tubes. My preamp only has RCA unbalanced inputs. This would be my first tube amp with a speaker known to be hard to drive at 4ohms
Doshi Jhor 90W monoblocks
Has anyone had experience with a Dohsi John 90W amp? I am looking to use them with my SonUs Faber Olympia IIIs. Not much information on the web.
Basic Specs
EL34 Pentode output tubes – 90 watts per channel
Input Impedance: 75k ohms
Sensitivity: .775v rms for full power
Feedback: 22db
Output Impedance: 4 ohms
Output Power: 90 w
Here are the specs for my speakers
FREQUENCY RESPONSE
35 Hz – 30.000 Hz, tuning port included.
SENSITIVITY
90 dB SPL (2.83 V/1m). NOMINAL
IMPEDANCE
4 ohm.
SUGGESTED AMPLIFIER POWER OUTPUT
50W – 300W, without clipping.
LONG-TERM MAXIMUM INPUT VOLTAGE (IEC-268-5)
22V rms.
Room 13 X 15 feet 195 sq feet
ceiling 7 feet
Total volume = 1365 feet
Source: MiniMac 2014 3.0GHZ I7 16 GB 4TB SSD as NAS
Software: Roon, Tidal
DAC: PS Audio Directstream
PreAmp: As phono stage Moving Coil Anthem Pre 1
PreAmp: Doge Clarity preamp used as line stage and MM phono stage
Turntable: VPI Aries Limited Edition
Speakers: SonUs Faber Olympia III
Sub: SVS SB13-Ultra
Power: Furman Elite-15 PFi
Cart: Denon MC DL-103R
SUT: Bob’s Devices SKY
I am a newbie. Any advice would be appreciated. Thanks!
Basic Specs
EL34 Pentode output tubes – 90 watts per channel
Input Impedance: 75k ohms
Sensitivity: .775v rms for full power
Feedback: 22db
Output Impedance: 4 ohms
Output Power: 90 w
Here are the specs for my speakers
FREQUENCY RESPONSE
35 Hz – 30.000 Hz, tuning port included.
SENSITIVITY
90 dB SPL (2.83 V/1m). NOMINAL
IMPEDANCE
4 ohm.
SUGGESTED AMPLIFIER POWER OUTPUT
50W – 300W, without clipping.
LONG-TERM MAXIMUM INPUT VOLTAGE (IEC-268-5)
22V rms.
Room 13 X 15 feet 195 sq feet
ceiling 7 feet
Total volume = 1365 feet
Source: MiniMac 2014 3.0GHZ I7 16 GB 4TB SSD as NAS
Software: Roon, Tidal
DAC: PS Audio Directstream
PreAmp: As phono stage Moving Coil Anthem Pre 1
PreAmp: Doge Clarity preamp used as line stage and MM phono stage
Turntable: VPI Aries Limited Edition
Speakers: SonUs Faber Olympia III
Sub: SVS SB13-Ultra
Power: Furman Elite-15 PFi
Cart: Denon MC DL-103R
SUT: Bob’s Devices SKY
I am a newbie. Any advice would be appreciated. Thanks!
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- 11 posts total
- 11 posts total