|
Model 317
|
Integrated Amplifier
|
-
2 x 80 Watts continuous power into 8 ohms
-
2 x 250 Watts dynamic power into 2 ohms
-
Remote control
-
Building Block Concept: power amp is NAD's Model 214
-
Pre-out / Main-in
-
All Discrete circuitry
-
Tone controls defeat switch
-
Bridgeable: 240 Watts into 8 ohms
-
Input switching through relays with Gold Plated contacts
-
Soft Clipping
Since its introduction, the NAD Model 214 Power Amplifier has enjoyed a
strong following and tremendous reputation throughout the world for its
performance and reliability. The latest addition to NAD's range of integrated
amplifiers is the Model 317 which is very closely related to the Model
214. In fact, the entire Power amplifier inside the Model 317 is identical
to that of the Model 214.
Flexibility
Flexibility is a traditional strong NAD point. The Model 317 has 6
line inputs (including 2 tape in/outputs with dubbing facility both ways).
By removing the links between the Pre-out and Main-in sockets the pre-amplifier
section can be separated from the power amplifier for easy upgrades (bi-amping,
for instance) or adding ancillary equipment.
As the built-in power amp of the Model 317 is identical to that of
the NAD Model 214 you can easily triple the output power to your speakers
by adding a Model 214 to your system. Bridge both power amplifiers and
you have increased the power of your system to 2 x 240 Watts continuous
into 8 ohms. Thanks to this "Building Block Concept" your Model 317 doesn't
need to be made redundant to upgrade.
Performance
Rather than using electronic switching between sources, the NAD engineers
have opted for using relays as these will give better performance at this
price level. To ensure long term reliability only relays with gold-plated
contacts have been used. The input selector relays are located as closely
as possible to the input sockets to minimise cross talk and interference.
As with the relays, all input and output sockets are gold plated to ensure
reliable signal transfer. A generous power supply (the same massive HolmgrenSYMBOL
212 \f "Symbol" Toroidal transformer as the Model 214 is used) and over-rated
output devices further lead to low noise and low distortion.
The overall high level of performance is achieved by using discrete
circuitry only and high quality close-tolerance components such as metal
film resistors and polypropylene capacitors. As one would expect from any
NAD amplifier, the Model 317 will drive loudspeakers with complex loads
(such as low impedances) with great ease.
The Model 317 also incorporates NAD's acclaimed switchable "Soft Clipping"
circuit which significantly reduces the risk of damage to loudspeakers
due to prolonged high power operation.
Apart from operating the Model 317, the remote control supplied with
the 116 will also operate many other NAD components. The NAD Link sockets
provide for communication between the other NAD components for complete
control.
Convenience, flexibility and, above all, performance, are the hallmarks
of the NAD Model 317. Consistent with NAD's reputation the Model 317 is
somewhat of a bargain when compared to amplifiers with similar performance.
NAD reserves the right to change specifications or design
at any time without notice. All specifications are those in effect at time
of printing.
| Power Amplifier Section |
| Continuous average power
output into 8 ohms |
75W |
| (Min power/channel, 20Hz-20kHz,
no more than rated distortion) |
|
|
| Rated distortion (THD 20Hz-20kHz) |
0.03% |
| Clipping power (maximum continuous
power per channel) |
105W |
| IHF dynamic headroom at 8
ohms |
+1.5dB |
| IHF dynamic power |
8 ohms |
110W (20.4dBW) |
| (maximum short term power per
channel) |
4 ohms |
180W (22.6 dBW) |
|
2 ohms |
250W (24dBW) |
| Slew rate |
>60 V/µsec |
| Damping factor (ref 8 ohms
50 Hz) |
>200 |
| THD + SMPTE + IHF I.M. (from
250mV to rated output) |
<0.03% |
| Input impendance |
60k ohms + 500pF |
| Input sensitivity (for rated
output into 8 ohms) |
0.9V |
| Input gain |
x 28.2 (29dB) |
| Signal/noise ratio, A weighted |
ref. 1W |
98dB |
|
ref. rated power |
115dB |
| Frequency response, 20Hz-20kHz |
2Hz/100kHz (-3dB) |
| Bridged (Monophonic) Mode |
| Continuous average power
output into 8 ohms |
240W (23.8 dBW) |
| (Min power/channel,
20Hz-20kHz, no more than rated distortion) |
|
| IHF dynamic headroom at 8
ohms |
+1.8 dB |
| IHF dynamic power |
8 ohms |
360W (25.6 dB) |
| (maximum short term power per
channel) |
4 ohms |
500W (27 dBW) |
| Line Level Inputs (CD,
Video, Tape, Aux) |
| Input sensitivity ref. rated
output |
150mV |
| Maximum input
signal |
>8V |
| Signal/Noise ratio, A weighted |
ref. 0.5V |
115dB |
|
ref. rated power |
360W (25.6 dB) |
| Frequency response,
20Hz-20kHz |
±0.3dB |
| Voltage gain |
16dB |
| THD + SMPTE +IHF
I.M |
0.098% |
| Line Level Outputs |
| Output impedance |
Pre Out |
2.2k ohms |
|
Tape Source |
Source Z + 2.2k ohms |
|
Video |
2.2k ohms |
| Maximum output level |
Pre Out |
Mono 800mV |
|
Tape out |
>10V into 600 ohms |
| Controls |
| Bass |
±10dB at 10kHz |
| Treble |
±7dB at 100Hz |
| Remote Control |
Yes |
| Physical Specifications |
| Dimensions in mm (WxHxD) |
435x145x330 |
| Net Weight |
12kg |
| Shipping Weight |
13.5kg |
Specifications are measured in accordance with EIA standard
RS-490 (IHF A-202) for amplifiers and ANSI-IEEE Standard 185 (1975), ie.
IHF T-200 for tuners. Tuner sensitivity is measured via 75 ohm coaxial
input. Sensitivity figures for 300 ohm input can be derived by multiplying
75 ohm figure by two. Amplifier measurements referenced to 8 ohm are taken
with the speaker Impedance Select at 8 ohm (high). Measurements for 4 ohm
and 2ohm are taken with the Impedance Select at 4 ohm (normal).