Alcone Loudspeaker Kit: Stra To

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ADM Stra To Review Lab Results

Stra To (Strassacker Tower) was developed by Udo Wohlgemuth, with the briefing to design a jack-of-all-trades, be it a shelf or a floorstanding speaker, and that grows with the increasing demands of the user.

Udo Wohlgemuth's goal was to "again design a great speaker with marvellous tops and with an extremely three-dimensional and tight bass."

This floorstanding speaker (pictured left) consists of a subwoofer and a satellite on top of it. The satellite (pictured right) may be used on its on, together with a subwoofer or with a special subwoofer stand as floorstanding speaker.

Technical data (floorstanding speaker = satellite + subwoofer + 1/2 amplifier module)
	Satellite	Subwoofers
Size (HxWxD) in cm	46.6 x 21.6 x 40.8	63.6 x 21.6 x 40.8
Frequency response (-8dB)	70-30 000 Hz	29-70 Hz
Crossover frequencies	2300 Hz	80 Hz
Impedance	4 Ohm	8 Ohm
rated SPL (2.83 V,1 m)	88 dB	n/a
Price per unit without cabinet	EUR 255,00	EUR 176,00
For 2 floorstanding speakers one subwoofer module is required: EUR 149,00
For one pair floorstanding speakers 2 satellites, 2 subwoofers and one amplifier is needed

The ADM Stra To Satellite kit contains:
Alcone Tweeter AC15, fabric dome 95 dB 2x Alcone 13 cm drivers AC5.25 HES, alu cone IT bass reflex tube HP70, 70x163mm, black 105 mm Terminal T105 with brass binding posts, gold plated 16 x Pan screws 4x20 black one universal PCB 220x155 mm the crossover components (see right) 2.5 m loudspeaker cable 2x2.5 mm2, red / black the building instruction	1.4 mm IT air core coil 0.27 mH/0.15 Ohm 1.4 mm IT air core coil 1.0 mH/0.28 Ohm 0.7 mm IT air core coil 0.39 mH/0.53 Ohm ELCO, non-etched 15uF / 50 Volt ELCO, non-etched 22uF / 50Volt MKP capacitor 5.6uF / 400V MKP capacitor 15uF / 400V MOX4 3.3 Ohm/4 Watt (orange-orange-gold) MOX4 4.7 Ohm/4 Watt (yellow-purple-gold) MOX4 10 Ohm/4 Watt (brown-black-black)

Price per satellite without cabinet EUR 255,00

or the high-end kit recommended by ADM (improved components in italic):
Alcone Tweeter AC15, fabric dome 95 dB 2x Alcone 13 cm drivers AC5.25 HES, alu cone IT bass reflex tube HP70, 70x163mm, black 105 mm Terminal T105 with brass binding posts, gold plated 16 x Pan screws 4x20 black one universal PCB 220x155 mm the crossover components (see right) 2.5 m loudspeaker cable 2x2.5 mm2, red / black the building instruction	Intertechnik Tritec coil 0.27 mH / 7x0.5mm Intertechnik Tritec coil 1.0 mH / 7x0.5mm 0.9 mm baked varnish coil 0.39 mH Ohm MKP capacitor 15uF / 400 Volt MKP capacitor 22 uF / 400 Volt MKP Audyn CAP 5.6uF / 400V MKP Audyn CAP 15uF / 400V MOX4 3.3 Ohm/4 Watt (orange-orange-gold) MOX4 4.7 Ohm/4 Watt (yellow-purple-gold) MOX4 10 Ohm/4 Watt (brown-black-black)

Price for satellite high-end without cabinet

- not available

Impedance correction for valve amps
If you want to drive the Stra To with a valve amp, then you need an impedance correction. The required components for the standard and high-end version of the satellite are listed on the right.	0.7 mm IT air core coil 0.47 mH/0.57 Ohm ELCO, non-etched 22uF / 50Volt MOX4 10 Ohm/4 Watt (brown-black-black) the building instruction

Price for impedance correction (for one satellite) EUR 7,15

in addition the subwoofer (per channel)
Alcone 25 cm driver AC10 SW-8, alu sandwich cone IT bass reflex tube HP70, 70x163mm, black 105 mm Terminal T105 with brass binding posts, gold plated the building instruction	4 x Pan screws 3.5x17 black 1 metre loudspeaker cable 2x2.5 mm2 8 Allen screws, black, 4x25 mm

Price per subwoofer without cabinet EUR 176,00

For one pair of subwoofer you also need one Detonation DT80 amplifier module
Price for Detonation DT 80 amplifier module EUR 149,00

ADM Stra To Home Cinema 5.1, an ideal combination

The ADM Home Cinema 5.1 consists of:

5 x satellites
2 x subwoofer, to be placed beneath the two front satellites (left/right)
1 x Detonation DT 80

ADM Stra To Home Cinema 7.1, and ideal combination

Die ADM Home Cinema 7.1 consists of:

7 x satellites
2 x subwoofer, to be placed beneath the two front satellites (left/right)
1 x Detonation DT 80

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