Gebrauchter Lautsprecher mit hellem Klang Empfehlung

Hallo. Können Sie mir bitte einen hellen Lautsprecher mit +100W RMS Belastbarkeit und gebraucht bis 500 Euro empfehlen. In Bezug auf die Klangsignatur ein Lautsprecher mit tieferen Bässen, nicht zu ausgeprägten Mittenbässen und Tiefmitteltöner, und helle hohe Mitten und hohe Frequenzen. Als Referenz würde ich auf die Soundsignatur von Grundig aus den 70er und frühen 80er Jahren verweisen. Vielen Dank.

Maximus.MKD (Beitrag #18) schrieb:

...I have measured the components, the capacitors and the resistors. ... The 6.8uF capacitor for the midrange driver and the 82uF capacitor for the bass driver seem to be a bit out of spec. The other components seem to be fine.

Thanks for the unmistakable measurements.

Anyway, Electrolytic capacitors generally have properties that make the results from simple MMs questionable
(DC or AC ?, which frequency ?).
So, after 40 yrs. without any re-freshing with +/-DC, regardless of MM-measurements, as costs and work is low,
please renew all 3:
82, 10 and 6.8 µF with bipolar 100 V-, for example from here:
https://www.lautspre...lytkondensatoren.htm
(82 = 68+15 or 47+33 µF parallel)

... I don't know if changing the capacitors with same value ones would result in improvement in sound on the AX 150. Previously i have recapped a pair of Canton CT 100 loudspeakers i owned, i didn't liked the sound, too much mid-bass, not enough detail and brightness in sound either before nor after the recap. I recapped all of the electrolytics with Mundorf film capacitors.

Without acoustic measurements of the speakers in question, neither now or from reports long ago,
it is difficult to see what your real problem is.
I know that larger speakers from Germany as Axiom AX 150 or Canton CT 100 are surely designed for free standing within the room (distances say >= 0.7 m from all walls, except floor; Axiom on small stands/podest).
If your conditions are different the chance is high that they all have too much mid bass and a search for bright sounding speakers of this origin is not easy, as everybody critized especially german speakers from 70s - 90s for sounding too cold /bright ("Taunus sound").

Possibly speakers from France are more your direction: Cabasse, Triangle, ...

But here is the circuit:

(the important polarity +/- of the drivers is still missing, please give info )

The tweeter high pass is 4th order with some additions.
In oder to increase the tweeter level two changes are quite easy to do:
-- short circuit or re-place the parallel resistors 2 x 1.5 Ohm in series with 3.9 µF with a short wire
(this should give "broadband" up to +1.5 dB from ~6 kHz upwards)

-- cut completely the circuit of 33 Ohm + 0.68 µF parallel to the tweeter (one of both is sufficient)
(this will give another +1 to +2 dB (?) above ~10 kHz; these 2 components fine tune /damp the uppermost
-- for many listeners: supersonic -- frequencies)

-- increasing the first tweeter-C from original 3.9 µF to 4.7 µF (same as the second one) will increase lower treble (ca. 3 - 8 kHz) up to 2 dB (in addition to the changes above).
Film caps >=100V- are the choice here:
https://www.lautsprechershop.de/hifi/audaphon_mkt_kondensator.htm
but you can use the "free" yellow 0.68 µF from above and put it in parallel with the 3.9 µF (= 4.58) so no new components are necessary for checking the direction of change

Another source for strong midbass /lower mids (and possibly low impedance there) seems to be the 82 µF parallel to the woofer.
I would replace it by something between 68 or even 47 µF, and reduce the series resistors (1.5 + 1.2 = 2.7 ohms) slightly by reducing 1.2 to 0.68 Ohm or even leaving /shorting this one completely so the result is 2.2 to 1.5 Ohm.
Simple ceramic wirewound Resistors of 5 Watt are near perfect for the purpose.
https://www.lautsprechershop.de/hifi/widerstand.htm#keramik

... About the replacement midrange, yes, the driver is from Acron loudspeakers not Arcus. I would like to ask about the placement of the 1 Ohm resistor you have suggested. Should i connect the resistor directly on the + and - terminals of the midrange on the crossover? ...

Either way, it does not matter (series connection).