dmhenley
100+ Head-Fier
- Joined
- Jun 11, 2014
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I've got a stepped attenuator on the way - last mod for the SEX amp. Have an Alps in there now. I'm curious.
I've got a stepped attenuator on the way - last mod for the SEX amp. Have an Alps in there now. I'm curious.
It means that whoever designed the amp either did not design it to leave the signal as unaffected as possible, or they didn't use good engineering practices when designing it. That's abundantly clear from the fact that it's OTL though, since that's a very poor design for high fidelity reproduction, so it was obviously chosen because the designer liked the imperfections it caused.
That sounds like someone who's misinformed. OTL designs are popular because of their simplicity which gives excellent performance for the price. The zero feedback design actually does leave the signal unaltered as far as I understand it, but obviously the week influence the overall tonality of the sound.
The Crack has a well earned reputation as one of the best amps around for the price and with high impedance cans
Stepped attenuator installed in the SEX amp today. $50 part from Ebay.
Driving 'phones: Higher resolution and wider listenable volume range are initially apparent, and in comparison to the Alps blue I had in prior. Sounds fantastic. I feel the low end is tighter too - maybe just more texture across the entire spectrum.
One note: I definitely have to turn the volume up higher - even with the Nighthawks. It's not subtle. And, when I first tried driving my Lore (98db speaker), the difference was more dramatic. Example: with the Alps blue, and depending on source material - 10 o'clock on the dial was loud. I've a small listening space. With this new part, I'm going to 12 o'clock plus.
Is this expected, or might I have created a problem during the install?
I can head over to the BH forums if this gets technical, but thought I'd throw it out there. I should add there is no distortion and I'm finally using the full power of the amp. No complaints.
What were your experiences going from the standard or an Alps pot to a stepped attenuator?
Did you experience any kind of break in with this type?
Alright, so....I was enjoying the new attenuator, and a couple days later the right channel went out. Being new to building, I assumed it was error on my part, and checked, re-checked and then re-wired one section in an attempt to correct the issue. after a couple three hours of total work over two days, I pulled the tubes and swapped them right for left. Right channel is back. Should've checked the tubes first.
Now, this is what Grandpa Rudy would've called goin' round your elbow to get to your thumb.
LOL. Done that myself!