Anything as " fast" as SPECTRAL gear?

Map, I know this is way off the subject, but yes, JJ's is pretty darn fast for delivery, they only deliver if their typical drive time from store to your house is 5 minutes or less(barring non-standard events such as car accidents, weather etc.)Anyway, back to the good stuff....

Fraz,

Inquiring minds want to know...

Next time a need a really fast sub...

Give it a shot! By the way, it doesn't mean you will get your order within 5 minutes, it is just the way they map out their delivery to make sure you do get it within a very reasonable time. The only way I know this is 2 of my sons work for them in management and training. FWIW

JJ's doesn't have any locations in my area. But before playing a recording that might call for a sub (which doesn't happen too frequently with my speakers), I can always drive over to a Subway location if need be. :-)

Best regards,
-- Al

I note, btw, that the ARC Ref 150 has a specified 3 db bandwidth of 120 kHz (at 1 watt, with an 80 kHz "power bandwidth" also being specified), and JA's measurements indicate a bandwidth of approximately 100 kHz (for an 8 ohm load connected to the 8 ohm tap), with excellent reproduction of a 10 kHz square wave (under small signal conditions, as noted under the graph).

Hi Almarg, thanks for the feedback.
I did also note the very same specs as you wrote above & also noted that these were mostly under small-signal conditions while slew-rate is a large-signal parameter (as you already noted in an earlier post). When the amp is outputting a lot more power then i believe that the distortion will be much higher & the various BWs cited in JA's measurements will constrict & that 10KHz sq wave won't look so pretty anymore . That's why a 66KHz BW at max rated power under the stated 13V/us slew rate did not seem unreasonable to me. The effect of the excess phase shift would thus be more discernible (vs. lower power outputs).