Bottlehead Forum

Bottlehead Kits => Moreplay => Topic started by: rockdrummer on November 05, 2020, 04:14:04 AM

Title: Upgrades?
Post by: rockdrummer on November 05, 2020, 04:14:04 AM: I know it's probably early to be asking for these yet, but I'm looking forward to planned upgrades for the Moreplay.

Still loving mine. Use it every day.
Ben
Title: Re: Upgrades?
Post by: Doc B. on November 05, 2020, 05:49:09 AM: They are in line after we get the BeePre 2 ready.
Title: Re: Upgrades?
Post by: rockdrummer on November 05, 2020, 06:01:00 AM: Good to hear!
Thanks.
Ben
Title: Re: Upgrades?
Post by: faskenite on November 05, 2020, 11:47:42 AM: Quote from: rockdrummer on November 05, 2020, 04:14:04 AM
I know it's probably early to be asking for these yet, but I'm looking forward to planned upgrades for the Moreplay.

What is the rating of the capacitors in the signal path?
Title: Re: Upgrades?
Post by: Paul Birkeland on November 05, 2020, 12:41:23 PM: The stock coupling caps are 2.2uF/250V.

I could rationalize recommending 4.7uF/250V caps in their place.
Title: Re: Upgrades?
Post by: oldtriode on November 05, 2020, 12:50:05 PM: Interesting...could you elaborate on that?
Title: Re: Upgrades?
Post by: Paul Birkeland on November 05, 2020, 02:33:28 PM: Quote from: oldtriode on November 05, 2020, 12:50:05 PM
Interesting...could you elaborate on that?
The recommendation stems from unannounced product upgrades.
Title: Re: Upgrades?
Post by: oldtriode on November 05, 2020, 04:15:48 PM: Ah...okay! Keep us informed....
Thanks for all the good work!
Title: Re: Upgrades?
Post by: patrick620 on December 23, 2020, 04:38:34 PM: Quote from: Paul Birkeland on November 05, 2020, 12:41:23 PM
The stock coupling caps are 2.2uF/250V.

I could rationalize recommending 4.7uF/250V caps in their place.

How would this affect the tone? Doubling the value seems significant.
Title: Re: Upgrades?
Post by: Paul Joppa on December 23, 2020, 07:28:51 PM: Technically, it won't have a large effect - just dropping the -3dB corner from ~5Hz to ~2Hz. A subtle improvement in the deep bass, perhaps. Based on experience with the BeePre and the Mainline, there does seem to be something there - but two out of two is still not statistically meaningful. We'll probably assess it in the Moreplay when the upgrades are prototyped.

Moreplay and BeePre II are our first preamps with a low-impedance level control at the output instead of the usual high impedance control at the input, so we're still exploring what works best. Incidentally, this change was PB's idea, and it seems to be working out quite well.
Title: Re: Upgrades?
Post by: Paul Birkeland on December 24, 2020, 04:32:08 AM: The upgrade path would involve increasing the plate loading impedance by using a C4S board, which will allow for a lower impedance attenuator at the output. The bigger coupling cap could be helpful there.
Title: Re: Upgrades?
Post by: oldtriode on December 28, 2020, 12:32:49 PM: Quote from: Paul Birkeland on December 24, 2020, 04:32:08 AM
The upgrade path would involve increasing the plate loading impedance by using a C4S board, which will allow for a lower impedance attenuator at the output. The bigger coupling cap could be helpful there.

Ah yes...will be watching for the C4S upgrade. Thanks guys!