About 3 years after Saul Marantz sold his company to Superscope Inc, he discovered another great talent who was obsessed with designing the perfect speaker. The man by trade was an engineer in the aerospace-industry and had played a key role in the development of the lunar landing module. His name was Jon Dahlquist and after a quick meeting Marantz sensed his greatness and immediately formed a partnership with him.

In 1972 the Dahlquist speaker corporation was born, although it wasn't until 1973 that they introduced their defining product, the DQ-10.

In the 1980s, Jon Dahlquist was severely injured in an automobile accident, and his company was sold. Carl Marchisotto and his wife Marilyn went on to start Acarian Systems, which manufactured Alon speakers, units still sought after in the used equipment market even though Acarian Systems is gone. They founded Accent Speaker Technology to build Nolas in 2004.

The DQ-10 was originally set up to use a CTS woofer. It was not meeting John Dahlquist's needs (I believe availability) so he opted for the Large Advent woofer. This is a long-excursion 10" woofer. Advent, under the helm of Henry Kloss, could not find a suitable 10" long-excursion driver, so built one using a 12" deep basket frame. The masonite ring was used to close the "gap" between a 10" cone and a frame initially designed for a 12" cone woofer.

The original DQ-10's had a 10" CTS woofer instead of the more widely known Large Advent woofer. (Factoid: CTS stands for Chicago Telephone Supply, and the likely reason they found their way into the DQ-10 was because Jon spent some time designing for Rectilinear Research, which used both 10 and 12 inch CTS woofers in some of their models). These were installed in units with serial numbers below 2000 and made primarily from 1973-74. Technically, those made after that number (with the Advent woofer) were called the DQ-10A. There was never any other model number for the 10's after the 10A. 10A's also had the yellow caps and mirror imaging standard, versus the earlier pairs which required the owner to replace/modify both the caps and the one speakers driver arrangement themselves via mailed instructions.

In total, 27,500 pairs of DQ-10's were manufactured. Every part of the crossover was assembled in-house as well.

At the start, the company consisted of roughly three people (including Jon) working out of a space in Freeport, NY about the size of "two garages." In looking for investors and knowledge on how to build the business, Jon came in contact with Saul Marantz, who subsequently bought in (at 49% ownership) after hearing the prototype DQ-10's. The number of employees fluctuated over the years, but it is said that during peak production years, there were about 15 people employed there.

According to Regnar, the DQ-10 was a very labor intensive speaker to build, most notably, the grills which were quite unique for their day, during a time when mass production technology wasn't available.