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MB 115/H

The MB 115/H professional musician's speaker is a compact, excellent value for money vented cabinet. It is equipped with the BGS 40 - 8 Ohm woofer and the HTH 8.7 - 8 Ohm mid- to high-range horn. A 2-way combination has the invaluable advantage of simplicity. However, combining a 15" woofer with a tweeter is not completely without its problems, since the cone of the woofer must also produce resonance-free and distortion-free sound in the mid-range. The tweeter, for its part, has to be distortion-free at relatively low frequencies and, at the same time, have good power handling capabilities. We decided on a cut-off frequency of 3000 Hz - a level both speaker drivers can cope with effortlessly.

The rated power output of the speaker is 200 watts. This rating is determined in accordance with the DIN standards using a permanent noise signal. This value is, however, far removed from practice, since music consists of many different impulses and surges. The effective value, that also tells us something about the heating-up of the voice coil, is much lower with music. We have successfully tested the MB 115/H with a professional-quality amplifier up to the clipping limit, so we are safe in saying it has a music rating of 500 watts. At this level, peak outputs of 120 dB are achieved at a distance of one metre.

Technical Data
Additional Content
Rated power 200 W
Maximum power 500 W
Nominal impedance Z 8 Ohm
Übertragungsbereich (-10 dB) 50–20000 Hz
Mittlerer Schalldruckpegel 96 dB (1 W/1 m)
Trennfrequenz 3000 Hz
Gehäuseprinzip Bassreflex
Net volume 90 l
Außenmaß Höhe 600 mm
Außenmaß Breite 480 mm
Außenmaß Tiefe 420 mm

Frequency- and impedance response

Component parts list for 1 box

HTH 8.7 - 8 Ohm
1 pc.
BGS 40 - 8 Ohm
1 pc.
ST 77
1 pc.
Damping material
Polyester wool
2 bags
Crossover MB 115/H
1 pc.
Wood screws:
4 x 20 mm
8 pcs.
Countersunk screws
3,5 x 25 mm
4 pcs.
3,5 x 19 mm
4 pcs.
Special wood screws
5 x 30 mm
8 pcs.
2 x 1,5 mm²
2,5 m

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