Ashly pema 4125 Data Sheet

Powered Matrix Processors

pêma protea êquipped media amplifier

pêma 4125 | 4250 | 8125 | 8250

Ashly Audio’s promise to “Simplify Integration” continues with pêma (Protea
Equipped Media Amplifier), a unique powered processor. Pêma sets a new
industry benchmark for value-engineered zone sound systems. By seamlessly
merging Ashly’s powerful, open-architecture DSP functionality with Ashly’s
renowned amplifier performance inside a two-rack space unit, pêma low­ers overall system cost, occupies less space, improves energy efficiency,
and both speeds and simplifies system installation and programming. Four
and eight amplifier channel versions are available at both 125 and 250
Watts per channel. Full 96kHz performance is available on 32-bit SHARC
processors for utterly transparent audio. Depending on the configuration,
pêma’s MSRP spans a modest $2,000 to $4,000, putting its benefits-to-costs
ratio through the roof.

Pêma changes the way consultants and integrators approach sound sys­tem design. With only the addition of input sources and output speakers,
pêma is capable of handling everything else for small- to mid-sized sound
systems. Pêma is a ‘house-of-worship-in-a-box’ or a ‘restaurant-in-a-box’
or a ‘bar-in-a-box’ or a ‘you-name-it-in-a-box.’ Pêma delivers an elegant
solution with less cabling, less rack space, and less installation time, using
proven DSP and amplifier technology that will awe clients with its simplicity,
sophistication, and reliability.

In addition to DSP algorithms such as ambient noise compensation, ad­vanced automatic feedback suppression, automatic mixer, and a full com­plement of filters, EQs, delays, and the like, pêma offers DSP control of the
amplifier functionality as well: selection of bridge-mode operation, HPF set­tings for constant voltage system networks, stereo-linking of channel pairs,
MIC/LINE/TEL-PAGE functions on channel 1, full control of ducking priorities,
and full-range remote-gain control capability.

Pêma’s I/O count and formats are ideal for small- to mid-sized installations.
Each variant has eight balanced input channels that are software select­able for mic or line levels. The first channel may also be set for a transformer
isolated, TEL-PBX level. Additionally there are eight pairs of summed-mono
RCA connectors optimized for consumer line level devices. Eight preamp
auxiliary outputs allow integrators to route signals from the matrix mixer to
anywhere the system requires. Both CobraNet and EtherSound digital I/Os
are fully supported.

As a member of the respected Protea DSP lineage, pêma is remarkably
easy to program and deploy. All set up is accomplished using standard
10/100 Ethernet protocol and Ashly’s Protea NE Software on a PC platform.
Hot-plug DSP placement allows users to insert any function into any channel
block, even when running live audio. Automatic DHCP network IP configu­ration reduces network set up time. Lockable front panel controls and multi­level software security with password access guarantee a tamperproof
audio system.

© 2010 | Ashly Audio, Inc. | 847 Holt Road | Webster | NY | 14580 | U.S.A. | www.ashly.com | [e-mail]

* All features, specifications and graphical representations are subject to change or improvement without notice.

pêma specifications

Features:
The World’s First Powered Processors

• 4 or 8-channel amplifier - 125 or 250
watts per channel

• 8-in x 8-out sophisticated
matrix mixing

• 8 built-in mic pre’s

• Gain sharing automatic microphone
mixing (Automixer)

• Automatic feedback suppression

• Ambient noise compensation

• Dedicated telephone/PBX input

• Dual RCA and balanced euroblock
inputs

• Post DSP AUX line level outputs

• Stereo summed to mono

• Event scheduling (RTC)

• Adjustable HP/LP filters

• Built-in pink/white noise & sine wave
generator

• Extensive signal processing

• Full suite of Ashly NE Series DSP

• Hot-plug DSP placement

• 96kHz or 48kHz sample rate

• 32 Bit SHARC DSP

• 24-bit A/D–D/A audio resolution

• 15V phantom power

• Full control using Ashly software over
10/100 baseT Ethernet

• Easy and intuitive user interface

• Automatic DHCP network IP configu
ration

• Euroblock connectors for preset
recall, DC remote level control and
data in/out

• External control via Ashly standard
wall remotes or Ashly Ethernet wall
remotes

• Level control via variable DC control
voltage.

• Stand-By mode activation via con
tact closure.

• Multi-level Security

• Five year worry-free warranty

Audio Connections:

•1 Euro connector balanced input,
software selectable for Mic, Line or
TEL-PBX

• 7 Euro connector balanced inputs,
software selectable for Mic or Line

• 8 pairs of unbalanced, summed­ mono RCA connectors optimized for
consumer line level (-10dBV) devices

• 8 Euro connector Preamp Aux out
puts

• 8 Euro connector amplifier outputs

Digital I/O Options:

• CobraNet

• Ethersound

pêma protea êquipped media amplifier

pêma 4125 | 4250 | 8125 | 8250

SRA Series specifications

pêma specifications

Amplifier Specifications

Continuous Average Power Output Per Channel

Low Z models, Stereo Mode, all channels driven

8Ω 20Hz-20kHz 1%THD 75W 75W 150W

4Ω 20Hz-20kHz 1%THD 125W 250W

Low Z models, Bridge Mode, all channels driven

8Ω 20Hz-20kHz 1%THD 250W 500W

70V, 100V distributed output models

20Hz-20kHz 1%THD, per channel 125W 250W

Line Current Draw (120V, all channels driven)

Line Current, Standby mode 190ma/290ma 190ma/290ma

Line Current, Idle (no signal) 540ma/565ma 540ma/565ma

Line Current, Typical (1/8 power pink noise) 1.70A/2.78A 2.85A/5.00A

Line Current, Maximum (1/3 power sine wave) 3.72A/5.78A 3.00A/5.50A

Thermal Dissipation (all channels driven)

BTU/hr, Standby mode 46.7/63.8 46.7/63.8

BTU/hr, Idle (no signal) 123/187 123/187

BTU/hr, Typ (1/8 power pink noise 232/444 341/700

BTU/hr, Max (1/3 power sine wave) 251/481 378/775

General Specifications

Input Sensitivity (low Z models 4..) 3.2Bbu 6.2dBu

Input Sensitivity (70V and 100V models) 7.2dBu 7.2dBu

Voltage Gain (low Z models) 26dB 26dB

Voltage Gain (70V models) 32dB 32dB

Voltage Gain (100V models) 35dB 35dB

Damping Factor (8 ohm load, <1kHz) >250 >250

Distortion (SMPTE, typical) <0.5% <0.5%

Distortion (THD-N, typical) 8Ω 10dB below
rated power, 20Hz-20kHz

Channel Separation (dB from full output, 1kHz) -80dB -80dB

Signal to Noise (20Hz-20KHz, unweighted) >102dB >105dB

Frequency Response 20Hz-20kHz, +/-1dB

Mic/Line Input Impedance 4.8K 4.8K

Mic/Line Maximum Input Level +21dBu +21dBu

Mic/Line Preamp Gain 0, +20dB, +40dB, +60dB

Mic/Line Phantom Power +15V, channel +15V, channel

Summed Mono Input Impedance 3.16K 3.16K

Summed Mono Maximum Input Level +11dBu +11dBu

TEL-PBX Input Impedance 3.9K 3.9K

TEL-PBX Maximum Input Level +21dBu +21dBu

Preamp Output Maximum Level +8dBu +8dBu

AUX Output Maximum Level +20dBu +20dBu

Balanced Mic/Line Input Connector Euroblock 3.5mm

Unbalanced Summed Mono Input Connector Dual RCA

Channel 1 TEL-PBX Input Connector Euroblock 3.5mm

Preamp/AUX Output Connector Euroblock 3.5mm

Speaker Output Connector Euroblock 7.62mm

Processors

Input A/D: 24 bit

Output D/A: 24 bit

DSP Processors: 32-bit fl oating point

Sample Rates: 48kHz, 96kHz

Propagation Delay @ 48kHz: 1.42 ms

Propagation Delay @ 96kHz: 0.71 ms

Notes:
0dBu = 0.775 VRMS

1) Measured 20 Hz – 20 kHz unweighted using AES17 LPF at 48 kHz sample rate.

3) Analog in to analog out measured using internal master clock.

4) Zero noise or signal amplitude variation introducted in digital domain.

5) Latency of network audio link is additional to latency of digital audio processor.

6) All features, specifications and graphical representations are subject to change or improvement without notice.

4125/8125 4250/8250

<0.5% <0.5%

DSP Specifications

Brick Wall Limiter 2, 4, 6, or 10 Band Parametric Equalizers

Threshold: -20dBu to +20dBu Parametric:

Ratio: infinite Frequency: 20-20kHz

Attack: Level: -30dB to +15dB

Release: 5ms/dB to 1000ms/dB Q: 0.016oct to 4oct

Compressor Hi/Low Shelf 6/12 dB

Threshold: -20dBu to +20dBu Frequency: 20Hz-20kHz

Ratio: 1.2:1 to infi nite Level: -15dB to +15dB

Attack: 0.2 to 50ms

Release: 5ms/dB to 1000ms/dB Frequency: 20Hz-20kHz

Detector: Peak/Average Variable Q HP/LP

Autoleveler

Target Level: -40dBu to +20dBu Q: 3.047 to 0.267

Action: gentle, normal, aggressive,

Maximum Gain: 0dB to +22dB Frequency: 20Hz-20kHz

Advanced Autoleveler Controls Q: 92.436 to 0.267

Ratio: 1.2:1 to 10:1 Feedback Suppressor

Threshold Below Target: -30dB to 0dB Filters: 12

Gain Increase Rate: 5ms/dB to 1000ms/dB Modes: Float, Restricted, Manual

Gain Decrease Rate: 5ms/dB to 1000ms/dB

Hold Time: 0-6 sec Frequency Range: 20Hz to 20kHz

Ambient Noise Compensation Notch Filter: - infinity

Max Gain: -20dB to +20dB Parametric Filter: +15dB to -30dB

Min/Base Gain: -40dB to +20dB Filter Bandwidth: 0.016 to 3.995 Octave

Gain Change Rate: 0.2s/dB to 20s/dB Detector Sensitivity: five levels

Noise Threshold: -40dBu to +20dBu Float Time:5 minutes to 24 hours

Program/Ambient Gain Ratio: 0.3:1 to 3:1

Ducker

Trigger Threshold: -80dBu to +20 dBu Filter Types:

Release: 5ms/dB to 1000ms/dB Bessel: 12/18/24/48 dB/oct

Depth: 0dB to -30dB, -‡ Butterworth: 12/18/24/48 dB/oct

Gate

Threshold: -80dBu to +20dBu Frequency: off, 20Hz-20KHz

Range: off, 100dB to 0dB

Attack: 0.2ms/dB to 50 ms/dB @ 48kHz Sampling Rate

Release: 5ms/dB to 1000ms/dB Speaker Delay: 0-21ms

Advanced Gate

Key Engage Enable: Yes @ 96kHz Sampling Rate

Key Frequency: 20Hz to 20kHz Speaker Delay: 0-10.6ms

Key Bandwidth: 0.016 to 3.995 Octave Delay: 0-341 ms

31 Band Graphic Signal Generator

Filter Type: constant Q or proportional pink noise, white noise, sine wave

Bandwidth: 0.499/oct to 0.25/oct

All Pass

Frequency: 20Hz-20kHz

Notch/Bandpass

Type: Notch, Parametric

Crossover

2 Way, 3 Way, 4 Way Crossover

Linkwitz-Riley: 12/24/48 dB/oct

Delay

Delay: 0-682 ms

Ashly Audio, Inc.
847 Holt Road
Webster, New York USA 14580-9103
P: 800-828-6308, [phone]
F: [phone]
www.ashly.com [e-mail]

Specifications subject to change without prior notice.
Latest information available at www.ashly.com.
© 2010 Ashly Audio, Inc.
Printed in U.S.A. 05/10