sneared
New Head-Fier
- Joined
- Jul 16, 2001
- Posts
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Since all the "good" 5751s are gone or priced astronomically high, I decided to roll some current production tubes, and maybe sift through everyone else's NOS trash.
So to have a baseline for some of my testing, I measured the frequency response of the amp with the stock tubes: JJ ECC83 with unknown driver tubes. The driver tubes were in white boxes labeled 6P14 with no markings on the tubes themselves.
The frequency testing was done driving a pair of HD600s, with the switch on the "high" impedance setting.
Wanna see how the OBH-11/SE compares? Go Here
Surprisingly, the MG-Head has a very smooth frequency response even compared to a solid state amp. I believe Videoshielded had noted some significant frequency peaks, but I didn't observe them.
Note that the high frequency roll off is due to the roll off of the CD player which is down to -1.5 dB at 20 kHz.
I'm getting some new driver tubes so I'm not going to test any more until they come in.
So to have a baseline for some of my testing, I measured the frequency response of the amp with the stock tubes: JJ ECC83 with unknown driver tubes. The driver tubes were in white boxes labeled 6P14 with no markings on the tubes themselves.
The frequency testing was done driving a pair of HD600s, with the switch on the "high" impedance setting.
Wanna see how the OBH-11/SE compares? Go Here
Surprisingly, the MG-Head has a very smooth frequency response even compared to a solid state amp. I believe Videoshielded had noted some significant frequency peaks, but I didn't observe them.
Note that the high frequency roll off is due to the roll off of the CD player which is down to -1.5 dB at 20 kHz.
I'm getting some new driver tubes so I'm not going to test any more until they come in.