MARSHALL CHOONG AUDIO audiophile loudspeakers

25 -17kHz
99dB sensitivity
LOWTHER main driver
STEREO 380mm subwoofers
Active Equaliser crossover

TARREGA is a high sensitivity 2 way dipole loudspeaker.

We took another approach to achieve a performance as close as possible to our Segovia system. One
trade-off is frequency
response, another
high SPL.

Tarrega, however,
can be partnered by
low power valve SET
and pure Class A solid
state amplifiers.

The ideal loudspeaker
would use a single
high sensitivity driver
as a point source to
cover the full audio
frequency range.
To date such a driver
has proved elusive.

A Lowther driver is used
as a dipole within its
optimum range. Our stereo
dipole Trueno subwoofers
augment the bass
response via an active
crossover from 130Hz.

The Lowther is then not stressed by attempting
an extended response with sufficient sound levels. At best bass would be compromised and uneven, along with added colouration and distortion.

Francisco Tarrega has been quoted as being the "awakener of the modern (classical) guitar".

In the 19th century, the guitar had fallen out of favour as a serious concert instrument despite the efforts of virtuoso guitarist / composers like Sor in the previous 100 years. It was regarded only as an instrument for accompanying singing.

Tarrega again popularised the instrument through concerts and composition and developed much of the modern technique used today, with the exception of playing without nails.

A number of his pieces are well known even today ("Recuerdos de la Alhambra") and are often heard transcribed to other instruments.


	The graphs speak for themselves. When comparing with other speakers, note whether response shown is room or anechoic. One compromise is the treble roll-off inherent to the Lowther. To add a supertweeter would negate the benefits of a point-source speaker.
	Frequency response Sensitivity Nominal impedance Power (based on individual driver rating) Power handling (driver excursion limited)		20 - 17kHz (-6dB) 99db, 2.82v / 1m 8 ohms 100W 100 - 20kHz 500W 20 - 130Hz (Trueno38)
	Drive Units Crossovers		200mm paper full range neodynium magnet 380mm woofer ±16.4mm throw (Trueno38) Electronic equaliser / crossover between bass and main drivers. Balanced output version available requiring cables using miniature XLR connectors at crossover end (Lemo) - available from MCAudio.
	Dimensions in mm- TARREGA		Height 1245H (exc spikes) X 400W X 400D Weight 20Kg
	Dimensions - TRUENO 38		560H (exc spikes) X 504W X 360D Weight 27Kg
	PRICES Tarrega pair+Trueno38 pair+ C101 Equaliser crossover		Metallic Silver, Pearl white, Graphite Satin lacquer £6000 Polished lacquer £6800 Wood veneer and solid lipping - cherry or black walnut with satin black plinth. Satin lacquer £6800 Polished lacquer £7500 Black piano lacquer - black walnut plinth. £7000 Other colours, veneers and finishes to order.

The Lowther is decoupled from the baffle to reduce panel vibrations.

Aficianados of single driver speakers will appreciate the absence of a passive crossover, negating concerns about phase shift and time delays.

Dipole loading the Lowther results in a baffle which minimises stored energy. Box speakers are prone to some or all of these effects -reflections, colouration, standing waves and phase shift depending on whether they are closed, reflex, transmission line or horn loaded.

A stereo amplifier of 3- 20W RMS is recommended, with an additional 100 - 300W RMS stereo amplifier for the twin Truenos.

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