Adam Audio a3x Active Studio Monitor [nearfields], 2010, Designed & Engineered in Germany | made in China

Link: adam-audio | Owner's Manual

TECHNICAL DATA

WOOFER
Number 1
Basket Ø 4.5" (120 mm)
Voice Coil Ø 1" (25 mm)
Cone Material Carbon Fiber

TWEETER
Number 1
Type X-ART
Diaphragm Area 4 inch² (2420 mm²)
Equiv. Diaphragm Ø 2" (56 mm)
Velocity Transform Ratio 4:1
Diaphragm Weight 0.17 g

BUILT-IN AMPLIFIERS
Woofer 1
Type A/B
Amp. Power RMS / Music 25 W / 40 W
Tweeter 1
Type A/B
Amp. Power RMS / Music 25 W / 40 W

Alesis DM10 High Definition Drum Module w/Dynamic Articulation, 2010, made in China

Link: alesis | Firmware Updates [posted 8/5/2014] | Trigger Compatibility Guide | Operator's Manual [RevC] | QuickStart Guide [RevB]

Features
12 trigger inputs
Top-panel mixer for balancing drums, cymbals, and accompaniment levels
Compatible with most electronic drum pads, cymbals, triggers, and controllers
Works with iPad via Apple USB Adaptor (sold separately)
Premium instrument library multi-sampled from real drums and cymbals
Dynamic Articulation™ changes sounds' character along with dynamics for realism
Load sound sets and control software drum modules via USB
Play along with tracks and record yourself with the sequencer
Mix input for practicing with CD and MP3 players
Mountable on stands or racks with E-Percussion Module Mount, sold separately
This product is class compliant; it does not require drivers

Specification

PLAYBACK

Polyphony: 64 voices
Memory: 128 MB, linear

AUDIO AND TRIGGE

Goodmans Midax 100 (Long-throw horn with Midax 100 driver) [VOX cab, Super Beatle Amp], 1968, made in England

Link: voxac100

Roland GP-16 Digital Guitar Effects Processor, 1989, made in Japan

 

Link: roland Owner's Manual | soundprogramming Service Manual

Specifications:

Patch Memories: 128

A/D Convertor: 16-bit Linear (64 times over-sampling, MASH process)

D/A Convertor: 16-bit Linear (4 times over-sampling) 

Sampling Frequency: 2.048 MHz (MASH process)

Frequency Response: 10Hz-16 kHz

[PARAMETERS]

<A-1> Compressor 

<A-2a> Distortion

<A-2b> Overdrive

<A-3> Picking Filter 

<A-4> Step Phaser

<A-5> Parametric Equalizer

<A-6>Noise Suppressor

<B-1 > Short Delay 

<B-2a> Chorus

<B-2b> Flanger

<B-2c> Pitch Shifter

<B-2d> Space-D 

<B-3> Auto Panpot

<B-4> Tap Delay

<B-5> Reverb

<B-6> Lineout Filter

[FRONT PANEL]

Input Jack

Input Level Control

Function Buttons: 2

EDIT Button

WRITE Button

SYSTEM Button

ESCAPE Button

GROUP Button

BANK Button

NUMBER Buttons: 8

α-Dial

Power Switch

Moog Minitaur Monophonic Bass Synthesizer, 2012, made in ...

Link: moogmusic Owner's Manual

Monophonic Bass Synthesizer

Each function has its own control element
Two VCOs with sawtooth waves (exactly the original Taurus respectively) and additional square waves
Mixer for VCO signals
Moog Ladder Filter delivers authentic Taurus1 and Taurus 3 sounds
Two ADSR envelope generators in the Minimoog-Style
LFO controls VCO and VCF - MIDI clock sync
Minitaur's sound generator can be fully controlled via MIDI
USB port and a MIDI-DIN plug
Analogue control inputs for pitch
Filter volume and gate - allow control through pedals and control voltages (everything from Moogerfooger to modular synthesizer)
Audio input for processing external audio signals through filter and mixer section
Headphone output
High-quality sheet steel housing
Rev2
Audio output: 6.3 mm mono jack, unbalanced

DH Labs Silver Sonic t-14, made in USA

Link: silversonic

KRK Rokit Powered RP10S, made in China

 

Link: prosound.ixbt | Owner's Manual

The new Rokit Powered series of close-field monitors wouldn’t be complete without a compatible low-end companion. The RP 10S sub-woofer was designed to deliver an articulate linear bass extension specifically tailored to fit the Rokit Powered monitor’s spectral balance. The RP10S features a level control, phase switch and variable filter control as well as the full compliment of input options offered on the Rokit Powered Monitors. We’ve even added a removable grill.

Features:

Frequency Response: 36Hz -50kHz +/- 1.5dB

Low Frequency Driver: 10" (254mm) High Excursion Glass Aramid Composite Woofer

Dimensions (HxWxD): 15" x 14 x 15 11/16" 38.2 cm x 35.5 cm x 39.8 cm

Weight: 42 lbs (19.1kg)

AMPLIFIER

Power Rating (HF/LF): 150 watts RMS

Signal to Noise (HF/LF): 98 dB

Input Impedance:

• Balanced: 10K Ohm
• Unbalanced: 10K Ohm

CROSSOVER

Filter/crossover: Fixed 80Hz High Pass Filter | Variable Low Pass Filter + Phase

Subsonic Filter: 

FUSE 5mm x 20mm:

100V - 120V 3.15A

220V - 240V 1.6A

FEATURES

XLR & 1/4" TRS

Connectors

RCA Connector

IEC Mains Connector

System Volume Control

LED Power Indicator

Spirit of St. Louis Radio Art. no.: 543.700, 1994, made in China

 

Link: radiomuseum

Country: Worldwide

Manufacturer / Brand: Spirit of St. Louis, S.O.S.L. (brand of Polyconcept

Year: 1994 ??

Category: Broadcast Receiver - or past WW2 Tuner
Number of Transistors: Semiconductors present.

Semiconductors
Main principle: Superheterodyne (common)

Wave bands: Broadcast, Long Wave and FM or UHF.

Power type and voltage: Batteries / addl. power jack / 3 x 1,5 / 4,5 Volt

Loudspeaker: Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 cm = 2.4 inch Material: Plastics (no bakelite or catalin)
Model: Field Transistor 543.700 - Spirit of St. Louis, S.O.S.L.

Shape: Design Radio or Novelty / Gadget - fancy or unusual shape.

Dimensions (WHD): 160 x 180 x 80 mm / 6.3 x 7.1 x 3.1 inch

Notes

- LW: 150-270 kHz

- MW: 525-1730 kHz

- FM: 87,5-108,5 MHz.
- Made in China.
- SOSL Field Transistor with leather carrying strap, all cabinet sides covered by metal plates, LED indicators power and FM
- Compare with Model No. 543.701 AM/FM only

Net weight (2.2 lb = 1 kg): 0.660 kg / 1 lb 7.3 oz (1.454 lb)

RAKK DAC mk1 D/A Converter | К&К Audio PCM1794 24bit/192kHz, made in USA

Link: kandkaudio

DAC на основе заводских плат К&К Audio на PCM1794 с I/U преобразованием на трансформаторах с аморфными сердечниками Lundahl LL1674. Вход spdif, входной трансоформатор Lundahl 1572.

Rane AC 22 Active Crossover, made in USA

Link: ranecommercial Data Sheet, PDF

General Description

The Rane AC 22 and AC 22B Active Crossovers are Stereo 2-Way with mono subwoofer option, or can be used as a Mono 3-Way. They employ state-variable 4th-order Linkwitz-Riley filter alignments to minimize phase difficulties in the critical crossover region. The model AC 22 utilizes 1⁄4" TRS connectors with balanced/unbalanced inputs and unbalanced outputs. The new AC 22B uses XLR connectors with active balanced inputs and outputs.

Simply put, a Linkwitz-Riley alignment is two cascaded 2nd-order Butterworth filters exhibiting identical phase characteristics on their Low pass and High pass Outputs. This characteristic guarantees in-phase outputs at all frequencies. In-phase outputs are mandatory for proper acoustic summing of common signals from adjacent drivers in the crossover region. An added benefit of this topology is steep 24 dB per octave rolloff slopes. A slope of this magnitude guarantees drivers designed to produce a specific range of frequencies, and no more, will not be driven past their limits, thereby minimizing distortion and driver fatigue.

To further guarantee the transparent operation of the
AC 22 and AC 22B, adjustable Delay circuits appear on the Low (& Mid when used in 3-Way mode) Outputs of each Channel to compensate for any physical misalignment of the drivers. Time correction ensures the mechanical phase alignment of adjacent drivers will be acoustically correct, thus maintaining the integrity of the electrical phase alignment of the crossover’s filters. The Low Delay circuit may be inter- nally transplanted to the High Output when neccessary. CD horn equalization is also possible with an internal modifica- tion.

See RaneNote 107 for more information regarding Linkwitz-Riley designs.