Question about BeePre2 300B Preamplifier

tube747 · 232

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Offline tube747

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on: January 14, 2025, 07:15:42 PM
What is the output impedance of BeePre2 300B Preamplifier?

As I want to use in my own system that has active subwoofer with input impedance of 12K ohm.

Whether the BeePre2 able to handle load impedance of 10K?

Thanks!
« Last Edit: January 14, 2025, 08:39:53 PM by tube747 »


Offline Doc B.

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Reply #1 on: January 15, 2025, 05:08:00 AM
It's about 3K ohms in the basic form and about 400 ohms at the RCA  output with the output upgrade added. Either version should be fine with a 12K ohm load.
« Last Edit: January 15, 2025, 05:45:07 AM by Doc B. »

Dan "Doc B." Schmalle
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Bottlehead Corp.

Offline tube747

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Reply #2 on: January 15, 2025, 08:11:25 PM
Hi!
I have swarm subwoofer system setup in my system, and interested in your 300B preamp/power amp and speaker system.

As long as your 300B Preamp able to drive the load, which is around 10K rather than 12K after doing the math (65x12/(65+12))

You have mentioned the output impedance is 400 ohm with the upgraded. Can you explain what is it about?

Many thanks!
« Last Edit: January 15, 2025, 08:28:57 PM by tube747 »


Online Paul Birkeland

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Reply #3 on: January 16, 2025, 01:03:54 PM
Here is the product page for that particular upgrade:
https://bottlehead.com/product/beepre2-output-upgrade/
We are certainly available here to answer any specific questions you have about it. 

-PB

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

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