Yorkville PowerMAX22-2 - Manuel (Page 4)

2
Input Channel Features
1. Channel Overload Protection
Mono input channels 1 to
6 in the PowerMAX 16 (1
to 12 in the PowerMAX
22) feature Channel
Overload Protection - a
sonically transparent lim-
iting function suitable for
percussive sources such as
bass guitar (either direct,
mic'ed or a direct line
from the amplifier), pop-
prone and feedback prone
microphones. (e.g. kick-
drum, flat top guitar, and
other troublesome sources).
Each channel features a Protect LED to indicate when the overload protection is working.
A single Defeat switch activates this feature on a group of six channels simultaneously.
2. Insert Jacks
The mono channels with-
out Channel Overload
Protection feature Insert
jacks. These are 1/4-inch
Tip-Ring-Sleeve (TRS) con-
nectors, which combine
send and return functions
for patching outboard sig-
nal processing directly into
a channel. A suitable patch
cable for this function (e.g.
Yorkville model PC-6iSPH)
would consist of a single
TRS (stereo) 1/4-inch plug and two lengths of shielded cable with a common ground
branching to two regular (mono) 1/4-inch plugs. The TRS wiring is tip/send, ring/return
and sleeve/ground. Since the PC-6iSPH comes with the leads marked Tip and Ring, con-
nect the Tip plug to the input of the signal processor (EQ, compressor, echo, etc.); con-
nect the Ring plug to the processor’s output. The TRS plug would go into the Insert jack.
The send function is post-Gain and post-HPF (high-pass-filter).
Alternately, the Insert jack may be used to send an audio signal from that channel to
a powered monitor (some people want to hear only themselves). Simply use an unbal-
anced shielded patch cable – in this one case, a balanced cable will not work. Be sure
to Insert the plug only to the first “click” when using the Insert as a channel send, oth-
erwise the signal will be interrupted and the channel will not work. If this happens, you
have Inserted the plug too far. Simply pull the plug out gently to the first stop.
3. Mic Inputs
The PowerMAX active input circuitry will accept microphones with impedances ranging
from 50 ohms through 10,000* ohms. All low impedance microphones are compatible.
Phantom power (covered in the section 4, Phantom Power Switch and LED, below) is
available on all Mic inputs when activated. This feature is meant for condenser micro-
phones but dynamic microphones may also be connected with no ill effects.
* Although it would be customary to plug high impedance microphones into the Bal
Line jacks, most of them will also work in the Mic inputs, provided the microphone’s
built-in XLR connections are pin 1 and pin 2 and pin 3 is connected to pin 1.
1 2 3 4 5 6
Bal Bal Bal Bal Bal Bal
Line
Mic
Line
Mic
Line
Mic
Line
Mic
Line
Mic
Line
Mic
Channel 1 - 6 Overload Protection Defeat
Protect Protect Protect Protect Protect Protect
7 8 9 10 11 12
Bal Bal Bal Bal Bal Bal
Line
Mic
Line
Mic
Line
Mic
Line
Mic
Line
Mic
Line
Mic
Insert Insert Insert Insert Insert
Tip: SEND
Ring: RETURN
Insert
Tip: SEND
Ring: RETURN
Tip: SEND
Ring: RETURN
Tip: SEND
Ring: RETURN
Tip: SEND
Ring: RETURN
Tip: SEND
Ring: RETURN