Tn-2220 handling

[wgtp]

I am considering purchasing a pair of Th-2220's. Will 520 watts aside into 8 ohms for a pair of th-2220's be safe from a Crown Mt-2400?.................thanx

[Lwang]

The MT-2400 are more like 495/685w into 8/4 ohm. The 520/800w are into 1khz, which does not apply in this situation.

The 1220 can handle 500w into 4 ohms with no problem. Their short term power are pretty high, as has been tested by Don Keele in 1998 on a much older version of the 1220 with his Crown Macro Reference amp:

"I plotted the TN1220HO's short-term peak power input and sound output (Fig. 4) from 12.5 Hz up instead of from the 20 Hz I've used for other subwoofers. The Hsu's peak power input capability starts at a fairly high 150 watts at 12.5 Hz, then rises through 660 Watts at 16 Hz to a high of 1.35 kW at 20 Hz, then stays at about 1 to 1.2 kW from 25 to 75 Hz. At higher frequencies, the input power rises rapidly, reaching 6,550 watts at 200 Hz."

[Sasha_G]

Since the Crown can handle 4 ohms, the Crown amp will be fine as long as you don't turn up the volume too much.

Since the drivers try to faithfully reproduce the 12 Hz bass, the $100 bass optimizer is required since it has subsonic filtering which reduces the risk of overdriving. The bass optimizer's EQ is also needed.

The bass optmizer can be bought here:
http://www.hsustore.com/bassoptimizer.html