Introduction, Configuration, Shape Control

Introduction

The LS800P is a premium quality integrated subwoofer and power amplifier. Created as an easy-to-setup addition to any P.A., the LS800P will extend the bass of a typical sound system with the least amount of complication. The LS800P has been intended to operate primarily with line level signals (with the option to accept Speaker Level signals).

Configuration

The LS800P may be used in several different configurations. The basic system is a single LS800P used for each full range enclosure or multiple LS800Ps along with individual full range enclosures. The LS800P accepts, and combines, the signals from separate line level (e.g. Left and Right) sources. Using the Mono Blend XLR input combines the second line level signal properly to drive the internal speakers and does not affect the stereo separation of the full range enclosures. When used in a setup where only one signal is provided to a speaker, such as a mono system or stereo with more than one LS800P, you can use any of the Link jacks.

1. Input Level Switch

The Input Level switch is provided to switch the Input Level between line level and speaker level. This switch should be set to speaker level when the LS800P is fed from the output of an amplifier or ‘powered’ mixer. Do not plug in two Speaker Level sources to one LS800P. The line level position is for use when the LS800P is fed a signal directly from a processor, electronic crossover or the output of an ‘unpowered’ mixer. When using the line level mode, the use of balanced (Tip, Ring, Sleeve) and/or XLR cables will reduce the unit’s sensitivity to hum and buzz.

2. LS800P Level Control

The LS800P Level control adjusts the amount of bass added to the sound system by the LS800P. This adjusts for the relative sensitivity of the companion full range speakers and the desired system frequency response.

This control should be set by listening while operating at a medium level and then not changed. It is not possible to set this control properly at high levels since the limiter is determining the output level.

A setting of 0 dB on the LS800P Level control is the correct starting point when setting up a sound system. From there, adjustments can be made for the best sound. The 0 dB mark refers to the setting that will give full power when the line input is used and the input signal is at a level of +4 dBV.

3. Shape Control

The Shape control enables tweaking of the most effective sub frequency, 50 Hz. You can boost or cut the equalization of the enclosure (50Hz) by a range of 6 dB (+ 3dB / -3dB).

Note: In High SPL situations a louder volume can be achieved by not using the Shape control in its full clockwise position.

4. HF Rolloff Frequency Control

The HF Rolloff Frequency control varies the frequency at which the LS800P rolls off the high frequencies. This provides part of a crossover function. This crossover function also combines with the natural low frequency rolloff inherent of the full range enclosure (when the LS800P is not used with an élite processor). An elite processor may be used to provide the LF rolloff of the full range loudspeaker. Ideally the LS800p would then be wired ahead of this processor. In this case the LS800P HF rolloff should match the LF crossover point of the elite processor. The elite processor should be set in the mode intended for use with a subwoofer. An elite processor may be used ahead of the LS800P in which case the LS800P HF rolloff should be set to maximum.

5. LINK Jacks

The Link jacks are set up to make it easy to hook up your LS800P to any audio system with a minimum of hassles. SInce all of the Link

LS800P specifications

The Yorkville Sound LS800P is a powerful and versatile subwoofer that combines advanced technology with outstanding performance. Designed for both portable and installed applications, the LS800P is an ideal choice for live sound, DJ performances, and fixed installations requiring deep, powerful bass reproduction.

One of the main features of the LS800P is its robust 800-watt Class D power amplifier. This efficient amplification system provides ample power to deliver punchy low-end frequencies without the risk of distortion, even at high volumes. With a frequency response extending down to 35 Hz, the subwoofer is capable of producing thunderous bass that can fill venues ranging from small clubs to large auditoriums.

The LS800P is equipped with an 18-inch low-frequency driver, designed to handle high sound pressure levels while maintaining clarity and precision. This driver utilizes a specially designed cone and a reinforced frame, ensuring that it can withstand the rigors of aggressive use while delivering rich, dynamic performance. This subwoofer is also designed with a rear bass reflex port, allowing for improved airflow and enhanced low-frequency output, adding to the overall efficiency.

In terms of connectivity, the LS800P features a versatile input section, including both XLR and 1/4-inch TRS inputs. This flexibility allows easy integration with a variety of audio sources, including mixers, processors, and audio interfaces. Additionally, the XLR loop-through outputs enable the subwoofer to be daisy-chained with other speakers, making it a practical solution for larger sound systems.

The enclosure of the LS800P is constructed from durable plywood, coated with a rugged textured finish that withstands the wear and tear of transportation. The design also incorporates built-in handles, which facilitate easy transport and setup, while its compact form factor allows it to fit into tight spaces.

Another key characteristic of the LS800P is its user-friendly controls. The integrated DSP (Digital Signal Processing) allows for tunable parameters, enabling users to adjust the crossover frequency and EQ settings to suit any environment. This adaptability is crucial for optimizing sound quality based on room acoustics and specific performance requirements.

In summary, the Yorkville Sound LS800P is a well-rounded subwoofer that delivers exceptional power, clarity, and versatility. Its combination of robust amplification, high-quality driver technology, and thoughtful design elements make it a reliable choice for audio professionals and enthusiasts alike, ensuring that low-frequency performance meets the demands of any sound reinforcement situation.