6922/6DJ8 tubes for tube rolling

Tube Rolling The Tortuga Tube Buffer

Designed around the excellent current production 6H30 tube, we’ve concluded that the TPB.V1 Tube Buffer is also compatible with the entire family of 9-pin 6DJ8 / ECC88 / 6922 / 7308 tubes which opens up a big wide world of tube rolling possibilities. And while the 6H30 is a great sounding tube for the Tortuga buffer, I’m already convinced that some of these alternative tubes will yield sonic improvements. …

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active dsp crossover

The Case for Active DSP Crossovers

Active DSP Crossovers Are The Future! Nearly all speakers require crossovers.  Historically crossovers have been passive. From the lowliest 2-way budget box to those 10 foot tall high-end monster cabinets you see in shows and magazines that cost as much as an average house – passive crossovers. Despite the ubiquitous nature of passive crossovers, active crossovers are in fact better than passive crossovers in almost every way except for …

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simplied schematic of Tortuga Audio's tube preamp buffer

Is A Preamp Buffer Right For You?

What Is A Preamp Buffer? To answer the question “What is a preamp buffer?” let’s start with a preamp that has no buffer,  i.e. a passive preamp. At a minimum, a passive preamp provides volume control (attenuation). Optionally, a passive preamp can also provide input switching between multiple connected sources. Passive preamps control volume by using either a potentiometer (i.e. “pot”), a stepped attenuator (series of switched resistors)  or, …

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Custom Boathull Speakers

Boathull Speakers We recently contracted with a customer to build a set of small bookshelf boathull speakers utilizing a unique type of nonlinear wood construction that results in not only an acoustically superior enclosure but also a very aesthetically pleasing design. As you can see from the pictures above and below, the results are quite stunning. Tortuga Audio intends to further pursue this type of speaker construction focusing on …

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McIntosh Mac 4100 integrated amplifier

Discovering A Mac 4100 Vintage Vinylizer

Bob’s Beach House On an coastal barrier island near where I live there’s a narrow winding side road off the single main road that leads to an even narrower long twisty driveway surrounded by a riot of subtropical flora at the end of which sits a nondescript single story white house on a top of a $3.5 million patch of land that includes a beach looking west out into …

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