Recent Posts

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Headphones / Re: Open Backed Headphones - Hifiman HE400I
« Last post by canman1971 on Today at 12:12:33 AM »
HiFiman dropping HE400I and HE560. HE400I going to Massdrop to with different headband to phase out. Hifiman intend to focus only on high end:

HE400S (for now)
Sundara
Edition X V2
HE1000V2
Susvara
Shangri-la jr
Shangri-la

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DAPs and Portable Devices / Re: Digital Audio Players ... anyone?
« Last post by canman1971 on Yesterday at 11:47:03 PM »
I have experience with both. FiiO X3MKIII bang for buck, Dual BB DAC chips, Dual Op-Amps, SE and Balanced. Can be used as USB DAC, accepts up to 256GB micro SD. Line out, Coax Out, BlueTooth 4.1, 2 x covers, screen protectors etc. I own one.
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AV Items: For sale / Re: Lexicon MC 4
« Last post by Richard on Yesterday at 11:27:22 PM »
On hold
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AV Items: For sale / Re: B&O plasma tv
« Last post by Richard on Yesterday at 11:26:19 PM »
The Premium 5ís must be awesome, judging by the lower level Premium 3ís I have. Piega really makes the coolest speakers. Just curious, what do you drive them with?

Currently they are not connected to anything 😢 as I am trying to sort out my lounge area but the problem is that I have a square room. The speaker placement required to get the best out of the speakers and room is not practical and I want a functional lounge. I have tested them on various amps, Vincent, Parasound, Meridian and a Primare and they sounded excellent. Also tried a Adcom amp but did not make a good match.

Might have to find another room ;D
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AV Items: For sale / Power distribution unit
« Last post by Richard on Yesterday at 11:11:48 PM »
King Snake power distribution unit, very well constructed and solid. Speak to me if you need USA plugs.
Price R950
Somerset West

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AV Items: For sale / Re: B&O plasma tv
« Last post by Wolla on Yesterday at 11:08:41 PM »
Hi Wolla, well spotted, they are the premium 5's, superb speakers if I may say so myself.
The Premium 5ís must be awesome, judging by the lower level Premium 3ís I have. Piega really makes the coolest speakers. Just curious, what do you drive them with?
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Valves/Tubes / Valve circuit design books and datasheet books
« Last post by AudioRecycle on Yesterday at 11:03:46 PM »
Hello

I am not into valve amp designs but found these design and datasheet books. Are these books handy or do one get all the info one could ever want available on the net. See attached photos. There are more books in the series of books with blue covers.

This is the over all picture of the book series.
https://postimg.cc/image/i78l7ktsn/

Here are the first pages and some other valve databooks.
https://postimg.cc/gallery/13j2ob7l4/

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AV Items: For sale / Re: B&O plasma tv
« Last post by Richard on Yesterday at 11:03:06 PM »
Hi Wolla, well spotted, they are the premium 5's, superb speakers if I may say so myself.
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AV Items: For sale / Burmester power terminal
« Last post by Richard on Yesterday at 10:58:28 PM »
Price R3850
Somerset West

Shipping is a option.

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DIY Audio / Re: Daan Jacobs Reference 1 restore - Advice wanted please
« Last post by Michon on Yesterday at 10:44:20 PM »
Thank you for the clarification.
I noticed that the SPL spec isn't given for the tweeter. Why is that?


your comment re  the pitch of a note does not apply....  eg  in a completed speaker if the signal sent through from source,  is 400 Hz    this is what the driver executes, no more no less....

That makes sense to me when one is dealing with frequencies that are above the f(s), but I am still unsure what happens at or below the f(s).

Hypothetically, if, in a sealed enclose, two woofers have an f(s) of 36.71Hz (D1) and 38.89Hz (D#1/Eb1) respectively and D1 is being played, will the fundamental frequency be softer (how much softer being dependent on the slope of the curve below the f(s)) on the speaker which contains the driver with an f(s) of 38.89Hz, because that speaker will have started to roll off one semi tone higher already?
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