Crossover Adiustmen ts

ANGINA CROSSOVER

The ANGINA is designed as a mono subwoofer amplifier. This means the amplifier will direct 200 watts of pure hard-core bass to your subwoofers. It handles these low frequencies with a Butterworth, 12dB/octave low pass filter.

These low pass frequencies are directed by the three position switch which sits on top of the amplifier as shown in the shaded area below. The switch selects from the following three frequencies; 60, 80 or 1 OOHz.

Top View of the ANGINA

A4 CROSSOVER

The A4 uses a S.I.P. (Series !n-line Package resistor network) for high pass crossover functions (factory set at 150Hz). However, the low pass is adjusted using a 12dB/oct variable crossover that has a range of 50 to 220Hz as seen in the shaded area below.

Front View of the A4

/’	IMPORTANT NOTE:	7

On the A4 amplifier, a full range signal can he achieved by removing
\	the SIX entirely.	/

Hawkins Bass Control

	Subwoofer drivers in general
	have excellent power han-
j	dling	characteristics over
	their	operational bandwidth.	dB
	This bandwidth is deter-
	mined by many factors, in-
	cluding driver design, and
	enclosure type. It is possible
	to overdrive any subwoofer		Frequency (Hz)	50
	driver by sending powerful		Figure	1

signals outside of its operational bandwidth. These potentially damaging sig- nals can be removed by adding a subsonic filter. Figure 1 shows the effective- ness of the Hawkins Bass Control on woofer excursion in a vented enclo- sure. The woofer travels 7.5mm at 10Hz. With Hawkins Bass Control prop- erly adjusted, this excursion can be reduced to less than 1 mm. This is oi great benefit to lowering woofer distortion and increasing output.

With Soundstream’s Hawkins Bass Control, the boost and frequency con- trol can provide the “tailoring” needed for any type of “assisted” design an any woofer in any type of installation.

The Angina and A4 amplifiers share the same fixed Hawkins Bass Control technology. A two position switch on the top of the amplifiers control the ‘Hawkins Bass Control’or ‘Sub Sonic’ filters as seen in the shaded area below. When the ‘Hawkins Bass Control is engaged a 6dB boost is applied at 45Hz. The ‘Sub Sonic’setting will engage the 13Hz subsonic filter with nc boost.

Top View of the ANGINA

Top View of the A4

Angina A4 specifications

Soundstream Technologies has made significant strides in the audio technology space with their latest innovation, the Angina A4. This high-fidelity sound system is designed for audiophiles who seek unparalleled sound quality and features to enhance their listening experience.

One of the standout characteristics of the Angina A4 is its advanced digital signal processing (DSP) technology. This feature allows for real-time audio adjustments to ensure that the sound output is perfectly tailored to the user's preferences and the acoustics of the listening environment. The DSP optimizes the sound stage, providing a more immersive experience whether you’re enjoying music, movies, or gaming.

The Angina A4 is equipped with a state-of-the-art Bluetooth 5.0 module, ensuring a stable connection with minimal latency. This allows users to stream high-quality audio from their devices without compromising sound integrity. The inclusion of aptX HD codec support enhances this capability further, allowing for lossless audio streaming that preserves the nuances of the original recording.

In terms of design, the Angina A4 is sleek and modern, featuring premium materials that not only contribute to its aesthetic appeal but also enhance acoustic performance. The cabinet is crafted from dense wood, which minimizes resonance and provides a solid foundation for the speaker units. Coupled with specially designed bass ports, this feature ensures deep, powerful low frequencies without distortion.

The system also boasts multiple connectivity options, including traditional wired connections such as RCA and optical inputs. This versatility allows users to integrate the Angina A4 into a variety of audio setups, from home theaters to professional studios. Additionally, built-in Wi-Fi capability enables access to streaming services, making it a fully functional multimedia hub.

Another major advantage of the Angina A4 is its customizability. With adjustable EQ settings and various sound profiles, users can easily switch between different audio presets based on their preferences or the type of content they're consuming. This personalization aspect is increasingly important in today’s audio-centric world where user experience plays a crucial role.

In summary, Soundstream Technologies' Angina A4 is a remarkable combination of cutting-edge technology and thoughtful design. With features like advanced DSP, Bluetooth 5.0 connectivity, versatile input options, and customizable audio settings, it stands out as a premier choice for discerning listeners seeking both quality and flexibility in their audio experiences.