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Hi,

Until recently I thought there is no way that I can find something for
a decent price (not costing 1000s), but (hurray hurray) I found two
contenders, and I would really appreciate your thoughs on those
pieces, it's Onkyo and Yamaha integrated amps, which don't need pre-
amps. My biggest concern is that Yamaha states it's a 8ohm-6 ohm
amplifier, though they rate the dynamic power at 8/6/4/2 ohms, and DIN
power at 250W (4ohms) 1 KHz. their specification goes like this (BTW,
yamaha is an old amplifier, from 90's, so any info on it would be
greately appreciated, because I cannot find anything, including the
differences between AX-1050, AX-1070 and AX-1090 amps, the specs of
which look absolutely identical):

Yamaha AX-1090

Minimum RMS power per channel
8 ohms, 20hz to 20 khz 0.01 THD - 145W
6 ohms, 20hz to 20 khz 0.02 THD - 185W

Dynamic power per channel
8/6/4/2 ohms - 220 / 290 / 360 / 460W

DIN standart output power per channel
(europe model only)
4 ohms, 1khz 0.7 thd - 250W

Dynamic headroom
8/6 ohms - 1.81 db / 1.95 db
IEC power (8 ohms, 1 khz 0.01 THD
(europe model only) 170W

Power band width
8 ohms, 72.5W 0.03 THD

Damping factor
8 ohms 20 hz to 20 khz 350 or more


The other contender is an Onkyo A-9755, which is a bit on the pricey
side for me. Note the low damping factor, which might be a bit of a
problem, is it not? Plus it doesn't have a pre-out, which is weird.
Does this mean I would not be able to connect a subwoofer to it?

Power output: 150 W + 150 W (8 Ù, 1 kHz, DIN)
300 W + 300 W (4 Ù, 1 kHz, JEITA)
Dynamic power: 330 W + 330 W (3 Ù, Front)
270 W + 270 W (4 Ù, Front)
170 W + 170W (8 Ù, Front)
THD (total harmonic distortion): 0.08 % (1 kHz, 1 W)
Damping factor: 25 (Front, 1 kHz, 8 Ù)
Input sensitivity and impedance: 200 mV, 50 kÙ (CD)
2.5 mV, 50 kÙ (PHONO MM)
Output level and impedance: 200 mV, 2.2 kÙ (REC OUT)
Phono overload: 70 mV (MM, 1 kHz, 0.5 %)
Frequency response: 10 Hz-60 kHz, +1 dB-3 dB (CD)
Tone control: +10 dB, -10 dB, 100 Hz (BASS)
+10 dB, -10 dB, 20 kHz (TREBLE)
+10 dB, 50 Hz (LOUDNESS)
+2 dB, 10 kHz (LOUDNESS)
SN ratio: 100 dB (CD, IHF-A)
70 dB (PHONO, IHF-A)
Speaker impedance: 4-16 Ù

These are my speakers: Dynaudio BM15 passives:
Frequency Response
(+/- 3 dB) 43 Hz - 20 kHz
Peak SPL 1m, pair
(IEC Long Term) 127 dB Peak
Peak SPL 2m, 5.1
(IEC Long Term) 128,5 dB Peak
Max SPL 1m
SPL @ 1m (+4/-10) 109 dB RMS
Amplifier Minimum 50 W ( 94 dB SPL @ 2m)
IEC Long term powerhandling 250W
IEC Short term powerhandling 1000W
Sensitivity 88 dB
Impedance Nominal 4 ohm
Impedance HF (200 kHz) 5,9 ohm
Resonance Frequency 43 Hz
Internal Cabinet Volume 25,8 liters
Bass Principle Bass reflex
Crossover Frequencies 2700 Hz
Crossover Slope Woofer 6 dB/oct; Tweeter 12 dB/oct

I know that Onkyo is rated at 4 ohms, so it's more fitting to my
speakers, but as I said it's a bit on the pricey side, plus it
wouldn't hurt to understand (for me) is there any difference in those
specs (except for
the obvious power difference in wattage). Which one of these would fit
my speakers better?

Thanks so much in advance!

Ray